Merge tag 'xfs-4.13-merge-5' of git://git.kernel.org/pub/scm/fs/xfs/xfs-linux

Pull XFS updates from Darrick Wong:
"Here are some changes for you for 4.13. For the most part it's fixes
for bugs and deadlock problems, and preparation for online fsck in
some future merge window.

- Avoid quotacheck deadlocks

- Fix transaction overflows when bunmapping fragmented files

- Refactor directory readahead

- Allow admin to configure if ASSERT is fatal

- Improve transaction usage detail logging during overflows

- Minor cleanups

- Don't leak log items when the log shuts down

- Remove double-underscore typedefs

- Various preparation for online scrubbing

- Introduce new error injection configuration sysfs knobs

- Refactor dq_get_next to use extent map directly

- Fix problems with iterating the page cache for unwritten data

- Implement SEEK_{HOLE,DATA} via iomap

- Refactor XFS to use iomap SEEK_HOLE and SEEK_DATA

- Don't use MAXPATHLEN to check on-disk symlink target lengths"

* tag 'xfs-4.13-merge-5' of git://git.kernel.org/pub/scm/fs/xfs/xfs-linux: (48 commits)
xfs: don't crash on unexpected holes in dir/attr btrees
xfs: rename MAXPATHLEN to XFS_SYMLINK_MAXLEN
xfs: fix contiguous dquot chunk iteration livelock
xfs: Switch to iomap for SEEK_HOLE / SEEK_DATA
vfs: Add iomap_seek_hole and iomap_seek_data helpers
vfs: Add page_cache_seek_hole_data helper
xfs: remove a whitespace-only line from xfs_fs_get_nextdqblk
xfs: rewrite xfs_dq_get_next_id using xfs_iext_lookup_extent
xfs: Check for m_errortag initialization in xfs_errortag_test
xfs: grab dquots without taking the ilock
xfs: fix semicolon.cocci warnings
xfs: Don't clear SGID when inheriting ACLs
xfs: free cowblocks and retry on buffered write ENOSPC
xfs: replace log_badcrc_factor knob with error injection tag
xfs: convert drop_writes to use the errortag mechanism
xfs: remove unneeded parameter from XFS_TEST_ERROR
xfs: expose errortag knobs via sysfs
xfs: make errortag a per-mountpoint structure
xfs: free uncommitted transactions during log recovery
xfs: don't allow bmap on rt files
...

fs/buffer.c

···
 }
 EXPORT_SYMBOL(bh_submit_read);
 
+/*
+ * Seek for SEEK_DATA / SEEK_HOLE within @page, starting at @lastoff.
+ *
+ * Returns the offset within the file on success, and -ENOENT otherwise.
+ */
+static loff_t
+page_seek_hole_data(struct page *page, loff_t lastoff, int whence)
+{
+	loff_t offset = page_offset(page);
+	struct buffer_head *bh, *head;
+	bool seek_data = whence == SEEK_DATA;
+
+	if (lastoff < offset)
+		lastoff = offset;
+
+	bh = head = page_buffers(page);
+	do {
+		offset += bh->b_size;
+		if (lastoff >= offset)
+			continue;
+
+		/*
+		 * Unwritten extents that have data in the page cache covering
+		 * them can be identified by the BH_Unwritten state flag.
+		 * Pages with multiple buffers might have a mix of holes, data
+		 * and unwritten extents - any buffer with valid data in it
+		 * should have BH_Uptodate flag set on it.
+		 */
+
+		if ((buffer_unwritten(bh) || buffer_uptodate(bh)) == seek_data)
+			return lastoff;
+
+		lastoff = offset;
+	} while ((bh = bh->b_this_page) != head);
+	return -ENOENT;
+}
+
+/*
+ * Seek for SEEK_DATA / SEEK_HOLE in the page cache.
+ *
+ * Within unwritten extents, the page cache determines which parts are holes
+ * and which are data: unwritten and uptodate buffer heads count as data;
+ * everything else counts as a hole.
+ *
+ * Returns the resulting offset on successs, and -ENOENT otherwise.
+ */
+loff_t
+page_cache_seek_hole_data(struct inode *inode, loff_t offset, loff_t length,
+			  int whence)
+{
+	pgoff_t index = offset >> PAGE_SHIFT;
+	pgoff_t end = DIV_ROUND_UP(offset + length, PAGE_SIZE);
+	loff_t lastoff = offset;
+	struct pagevec pvec;
+
+	if (length <= 0)
+		return -ENOENT;
+
+	pagevec_init(&pvec, 0);
+
+	do {
+		unsigned want, nr_pages, i;
+
+		want = min_t(unsigned, end - index, PAGEVEC_SIZE);
+		nr_pages = pagevec_lookup(&pvec, inode->i_mapping, index, want);
+		if (nr_pages == 0)
+			break;
+
+		for (i = 0; i < nr_pages; i++) {
+			struct page *page = pvec.pages[i];
+
+			/*
+			 * At this point, the page may be truncated or
+			 * invalidated (changing page->mapping to NULL), or
+			 * even swizzled back from swapper_space to tmpfs file
+			 * mapping.  However, page->index will not change
+			 * because we have a reference on the page.
+                         *
+			 * If current page offset is beyond where we've ended,
+			 * we've found a hole.
+                         */
+			if (whence == SEEK_HOLE &&
+			    lastoff < page_offset(page))
+				goto check_range;
+
+			/* Searching done if the page index is out of range. */
+			if (page->index >= end)
+				goto not_found;
+
+			lock_page(page);
+			if (likely(page->mapping == inode->i_mapping) &&
+			    page_has_buffers(page)) {
+				lastoff = page_seek_hole_data(page, lastoff, whence);
+				if (lastoff >= 0) {
+					unlock_page(page);
+					goto check_range;
+				}
+			}
+			unlock_page(page);
+			lastoff = page_offset(page) + PAGE_SIZE;
+		}
+
+		/* Searching done if fewer pages returned than wanted. */
+		if (nr_pages < want)
+			break;
+
+		index = pvec.pages[i - 1]->index + 1;
+		pagevec_release(&pvec);
+	} while (index < end);
+
+	/* When no page at lastoff and we are not done, we found a hole. */
+	if (whence != SEEK_HOLE)
+		goto not_found;
+
+check_range:
+	if (lastoff < offset + length)
+		goto out;
+not_found:
+	lastoff = -ENOENT;
+out:
+	pagevec_release(&pvec);
+	return lastoff;
+}
+
 void __init buffer_init(void)
 {
 	unsigned long nrpages;

fs/iomap.c

···
 }
 EXPORT_SYMBOL_GPL(iomap_fiemap);
 
+static loff_t
+iomap_seek_hole_actor(struct inode *inode, loff_t offset, loff_t length,
+		      void *data, struct iomap *iomap)
+{
+	switch (iomap->type) {
+	case IOMAP_UNWRITTEN:
+		offset = page_cache_seek_hole_data(inode, offset, length,
+						   SEEK_HOLE);
+		if (offset < 0)
+			return length;
+		/* fall through */
+	case IOMAP_HOLE:
+		*(loff_t *)data = offset;
+		return 0;
+	default:
+		return length;
+	}
+}
+
+loff_t
+iomap_seek_hole(struct inode *inode, loff_t offset, const struct iomap_ops *ops)
+{
+	loff_t size = i_size_read(inode);
+	loff_t length = size - offset;
+	loff_t ret;
+
+	/* Nothing to be found beyond the end of the file. */
+	if (offset >= size)
+		return -ENXIO;
+
+	while (length > 0) {
+		ret = iomap_apply(inode, offset, length, IOMAP_REPORT, ops,
+				  &offset, iomap_seek_hole_actor);
+		if (ret < 0)
+			return ret;
+		if (ret == 0)
+			break;
+
+		offset += ret;
+		length -= ret;
+	}
+
+	return offset;
+}
+EXPORT_SYMBOL_GPL(iomap_seek_hole);
+
+static loff_t
+iomap_seek_data_actor(struct inode *inode, loff_t offset, loff_t length,
+		      void *data, struct iomap *iomap)
+{
+	switch (iomap->type) {
+	case IOMAP_HOLE:
+		return length;
+	case IOMAP_UNWRITTEN:
+		offset = page_cache_seek_hole_data(inode, offset, length,
+						   SEEK_DATA);
+		if (offset < 0)
+			return length;
+		/*FALLTHRU*/
+	default:
+		*(loff_t *)data = offset;
+		return 0;
+	}
+}
+
+loff_t
+iomap_seek_data(struct inode *inode, loff_t offset, const struct iomap_ops *ops)
+{
+	loff_t size = i_size_read(inode);
+	loff_t length = size - offset;
+	loff_t ret;
+
+	/* Nothing to be found beyond the end of the file. */
+	if (offset >= size)
+		return -ENXIO;
+
+	while (length > 0) {
+		ret = iomap_apply(inode, offset, length, IOMAP_REPORT, ops,
+				  &offset, iomap_seek_data_actor);
+		if (ret < 0)
+			return ret;
+		if (ret == 0)
+			break;
+
+		offset += ret;
+		length -= ret;
+	}
+
+	if (length <= 0)
+		return -ENXIO;
+	return offset;
+}
+EXPORT_SYMBOL_GPL(iomap_seek_data);
+
 /*
  * Private flags for iomap_dio, must not overlap with the public ones in
  * iomap.h:

fs/xfs/Kconfig

···
 	  not useful unless you are debugging a particular problem.
 
 	  Say N unless you are an XFS developer, or you play one on TV.
+
+config XFS_ASSERT_FATAL
+	bool "XFS fatal asserts"
+	default y
+	depends on XFS_FS && XFS_DEBUG
+	help
+	  Set the default DEBUG mode ASSERT failure behavior.
+
+	  Say Y here to cause DEBUG mode ASSERT failures to result in fatal
+	  errors that BUG() the kernel by default. If you say N, ASSERT failures
+	  result in warnings.
+
+	  This behavior can be modified at runtime via sysfs.

fs/xfs/libxfs/xfs_ag_resv.c

···
 
 	/* Critically low if less than 10% or max btree height remains. */
 	return XFS_TEST_ERROR(avail < orig / 10 || avail < XFS_BTREE_MAXLEVELS,
-			pag->pag_mount, XFS_ERRTAG_AG_RESV_CRITICAL,
-			XFS_RANDOM_AG_RESV_CRITICAL);
+			pag->pag_mount, XFS_ERRTAG_AG_RESV_CRITICAL);
 }
 
 /*

fs/xfs/libxfs/xfs_alloc.c

···
 /*
  * Read in the allocation group free block array.
  */
-STATIC int				/* error */
+int					/* error */
 xfs_alloc_read_agfl(
 	xfs_mount_t	*mp,		/* mount point structure */
 	xfs_trans_t	*tp,		/* transaction pointer */
···
 	    !xfs_buf_verify_cksum(bp, XFS_AGF_CRC_OFF))
 		xfs_buf_ioerror(bp, -EFSBADCRC);
 	else if (XFS_TEST_ERROR(!xfs_agf_verify(mp, bp), mp,
-				XFS_ERRTAG_ALLOC_READ_AGF,
-				XFS_RANDOM_ALLOC_READ_AGF))
+				XFS_ERRTAG_ALLOC_READ_AGF))
 		xfs_buf_ioerror(bp, -EFSCORRUPTED);
 
 	if (bp->b_error)
···
 	ASSERT(type != XFS_AG_RESV_AGFL);
 
 	if (XFS_TEST_ERROR(false, mp,
-			XFS_ERRTAG_FREE_EXTENT,
-			XFS_RANDOM_FREE_EXTENT))
+			XFS_ERRTAG_FREE_EXTENT))
 		return -EIO;
 
 	error = xfs_free_extent_fix_freelist(tp, agno, &agbp);

fs/xfs/libxfs/xfs_alloc.h

···
 
 int xfs_read_agf(struct xfs_mount *mp, struct xfs_trans *tp,
 			xfs_agnumber_t agno, int flags, struct xfs_buf **bpp);
+int xfs_alloc_read_agfl(struct xfs_mount *mp, struct xfs_trans *tp,
+			xfs_agnumber_t agno, struct xfs_buf **bpp);
 int xfs_alloc_fix_freelist(struct xfs_alloc_arg *args, int flags);
 int xfs_free_extent_fix_freelist(struct xfs_trans *tp, xfs_agnumber_t agno,
 		struct xfs_buf **agbp);

fs/xfs/libxfs/xfs_alloc_btree.c

···
 	ptr->s = agf->agf_roots[cur->bc_btnum];
 }
 
-STATIC __int64_t
+STATIC int64_t
 xfs_bnobt_key_diff(
 	struct xfs_btree_cur	*cur,
 	union xfs_btree_key	*key)
···
 	xfs_alloc_rec_incore_t	*rec = &cur->bc_rec.a;
 	xfs_alloc_key_t		*kp = &key->alloc;
 
-	return (__int64_t)be32_to_cpu(kp->ar_startblock) - rec->ar_startblock;
+	return (int64_t)be32_to_cpu(kp->ar_startblock) - rec->ar_startblock;
 }
 
-STATIC __int64_t
+STATIC int64_t
 xfs_cntbt_key_diff(
 	struct xfs_btree_cur	*cur,
 	union xfs_btree_key	*key)
 {
 	xfs_alloc_rec_incore_t	*rec = &cur->bc_rec.a;
 	xfs_alloc_key_t		*kp = &key->alloc;
-	__int64_t		diff;
+	int64_t			diff;
 
-	diff = (__int64_t)be32_to_cpu(kp->ar_blockcount) - rec->ar_blockcount;
+	diff = (int64_t)be32_to_cpu(kp->ar_blockcount) - rec->ar_blockcount;
 	if (diff)
 		return diff;
 
-	return (__int64_t)be32_to_cpu(kp->ar_startblock) - rec->ar_startblock;
+	return (int64_t)be32_to_cpu(kp->ar_startblock) - rec->ar_startblock;
 }
 
-STATIC __int64_t
+STATIC int64_t
 xfs_bnobt_diff_two_keys(
 	struct xfs_btree_cur	*cur,
 	union xfs_btree_key	*k1,
 	union xfs_btree_key	*k2)
 {
-	return (__int64_t)be32_to_cpu(k1->alloc.ar_startblock) -
+	return (int64_t)be32_to_cpu(k1->alloc.ar_startblock) -
 			  be32_to_cpu(k2->alloc.ar_startblock);
 }
 
-STATIC __int64_t
+STATIC int64_t
 xfs_cntbt_diff_two_keys(
 	struct xfs_btree_cur	*cur,
 	union xfs_btree_key	*k1,
 	union xfs_btree_key	*k2)
 {
-	__int64_t		diff;
+	int64_t			diff;
 
 	diff =  be32_to_cpu(k1->alloc.ar_blockcount) -
 		be32_to_cpu(k2->alloc.ar_blockcount);
···
 };
 
 
-#if defined(DEBUG) || defined(XFS_WARN)
 STATIC int
 xfs_bnobt_keys_inorder(
 	struct xfs_btree_cur	*cur,
···
 		 be32_to_cpu(r1->alloc.ar_startblock) <
 		 be32_to_cpu(r2->alloc.ar_startblock));
 }
-#endif /* DEBUG */
 
 static const struct xfs_btree_ops xfs_bnobt_ops = {
 	.rec_len		= sizeof(xfs_alloc_rec_t),
···
 	.key_diff		= xfs_bnobt_key_diff,
 	.buf_ops		= &xfs_allocbt_buf_ops,
 	.diff_two_keys		= xfs_bnobt_diff_two_keys,
-#if defined(DEBUG) || defined(XFS_WARN)
 	.keys_inorder		= xfs_bnobt_keys_inorder,
 	.recs_inorder		= xfs_bnobt_recs_inorder,
-#endif
 };
 
 static const struct xfs_btree_ops xfs_cntbt_ops = {
···
 	.key_diff		= xfs_cntbt_key_diff,
 	.buf_ops		= &xfs_allocbt_buf_ops,
 	.diff_two_keys		= xfs_cntbt_diff_two_keys,
-#if defined(DEBUG) || defined(XFS_WARN)
 	.keys_inorder		= xfs_cntbt_keys_inorder,
 	.recs_inorder		= xfs_cntbt_recs_inorder,
-#endif
 };
 
 /*

fs/xfs/libxfs/xfs_attr.c

···
  * Overall external interface routines.
  *========================================================================*/
 
+/* Retrieve an extended attribute and its value.  Must have iolock. */
+int
+xfs_attr_get_ilocked(
+	struct xfs_inode	*ip,
+	struct xfs_da_args	*args)
+{
+	if (!xfs_inode_hasattr(ip))
+		return -ENOATTR;
+	else if (ip->i_d.di_aformat == XFS_DINODE_FMT_LOCAL)
+		return xfs_attr_shortform_getvalue(args);
+	else if (xfs_bmap_one_block(ip, XFS_ATTR_FORK))
+		return xfs_attr_leaf_get(args);
+	else
+		return xfs_attr_node_get(args);
+}
+
+/* Retrieve an extended attribute by name, and its value. */
 int
 xfs_attr_get(
 	struct xfs_inode	*ip,
···
 	args.op_flags = XFS_DA_OP_OKNOENT;
 
 	lock_mode = xfs_ilock_attr_map_shared(ip);
-	if (!xfs_inode_hasattr(ip))
-		error = -ENOATTR;
-	else if (ip->i_d.di_aformat == XFS_DINODE_FMT_LOCAL)
-		error = xfs_attr_shortform_getvalue(&args);
-	else if (xfs_bmap_one_block(ip, XFS_ATTR_FORK))
-		error = xfs_attr_leaf_get(&args);
-	else
-		error = xfs_attr_node_get(&args);
+	error = xfs_attr_get_ilocked(ip, &args);
 	xfs_iunlock(ip, lock_mode);
 
 	*valuelenp = args.valuelen;

fs/xfs/libxfs/xfs_attr_leaf.c

···
 
 	err = xfs_da_read_buf(tp, dp, bno, mappedbno, bpp,
 				XFS_ATTR_FORK, &xfs_attr3_leaf_buf_ops);
-	if (!err && tp)
+	if (!err && tp && *bpp)
 		xfs_trans_buf_set_type(tp, *bpp, XFS_BLFT_ATTR_LEAF_BUF);
 	return err;
 }

fs/xfs/libxfs/xfs_attr_remote.c

···
 	xfs_ino_t	ino,
 	int		*offset,
 	int		*valuelen,
-	__uint8_t	**dst)
+	uint8_t		**dst)
 {
 	char		*src = bp->b_addr;
 	xfs_daddr_t	bno = bp->b_bn;
···
 	xfs_ino_t	ino,
 	int		*offset,
 	int		*valuelen,
-	__uint8_t	**src)
+	uint8_t		**src)
 {
 	char		*dst = bp->b_addr;
 	xfs_daddr_t	bno = bp->b_bn;
···
 	struct xfs_mount	*mp = args->dp->i_mount;
 	struct xfs_buf		*bp;
 	xfs_dablk_t		lblkno = args->rmtblkno;
-	__uint8_t		*dst = args->value;
+	uint8_t			*dst = args->value;
 	int			valuelen;
 	int			nmap;
 	int			error;
···
 			       (map[i].br_startblock != HOLESTARTBLOCK));
 			dblkno = XFS_FSB_TO_DADDR(mp, map[i].br_startblock);
 			dblkcnt = XFS_FSB_TO_BB(mp, map[i].br_blockcount);
-			error = xfs_trans_read_buf(mp, NULL, mp->m_ddev_targp,
+			error = xfs_trans_read_buf(mp, args->trans,
+						   mp->m_ddev_targp,
 						   dblkno, dblkcnt, 0, &bp,
 						   &xfs_attr3_rmt_buf_ops);
 			if (error)
···
 			error = xfs_attr_rmtval_copyout(mp, bp, args->dp->i_ino,
 							&offset, &valuelen,
 							&dst);
-			xfs_buf_relse(bp);
+			xfs_trans_brelse(args->trans, bp);
 			if (error)
 				return error;
 
···
 	struct xfs_bmbt_irec	map;
 	xfs_dablk_t		lblkno;
 	xfs_fileoff_t		lfileoff = 0;
-	__uint8_t		*src = args->value;
+	uint8_t			*src = args->value;
 	int			blkcnt;
 	int			valuelen;
 	int			nmap;

fs/xfs/libxfs/xfs_attr_sf.h

···
  * We generate this then sort it, attr_list() must return things in hash-order.
  */
 typedef struct xfs_attr_sf_sort {
-	__uint8_t	entno;		/* entry number in original list */
-	__uint8_t	namelen;	/* length of name value (no null) */
-	__uint8_t	valuelen;	/* length of value */
-	__uint8_t	flags;		/* flags bits (see xfs_attr_leaf.h) */
+	uint8_t		entno;		/* entry number in original list */
+	uint8_t		namelen;	/* length of name value (no null) */
+	uint8_t		valuelen;	/* length of value */
+	uint8_t		flags;		/* flags bits (see xfs_attr_leaf.h) */
 	xfs_dahash_t	hash;		/* this entry's hash value */
 	unsigned char	*name;		/* name value, pointer into buffer */
 } xfs_attr_sf_sort_t;
···
 #define XFS_ATTR_SF_ENTSIZE_BYNAME(nlen,vlen)	/* space name/value uses */ \
 	(((int)sizeof(xfs_attr_sf_entry_t)-1 + (nlen)+(vlen)))
 #define XFS_ATTR_SF_ENTSIZE_MAX			/* max space for name&value */ \
-	((1 << (NBBY*(int)sizeof(__uint8_t))) - 1)
+	((1 << (NBBY*(int)sizeof(uint8_t))) - 1)
 #define XFS_ATTR_SF_ENTSIZE(sfep)		/* space an entry uses */ \
 	((int)sizeof(xfs_attr_sf_entry_t)-1 + (sfep)->namelen+(sfep)->valuelen)
 #define XFS_ATTR_SF_NEXTENTRY(sfep)		/* next entry in struct */ \

fs/xfs/libxfs/xfs_bit.h

···
 /*
  * masks with n high/low bits set, 64-bit values
  */
-static inline __uint64_t xfs_mask64hi(int n)
+static inline uint64_t xfs_mask64hi(int n)
 {
-	return (__uint64_t)-1 << (64 - (n));
+	return (uint64_t)-1 << (64 - (n));
 }
-static inline __uint32_t xfs_mask32lo(int n)
+static inline uint32_t xfs_mask32lo(int n)
 {
-	return ((__uint32_t)1 << (n)) - 1;
+	return ((uint32_t)1 << (n)) - 1;
 }
-static inline __uint64_t xfs_mask64lo(int n)
+static inline uint64_t xfs_mask64lo(int n)
 {
-	return ((__uint64_t)1 << (n)) - 1;
+	return ((uint64_t)1 << (n)) - 1;
 }
 
 /* Get high bit set out of 32-bit argument, -1 if none set */
-static inline int xfs_highbit32(__uint32_t v)
+static inline int xfs_highbit32(uint32_t v)
 {
 	return fls(v) - 1;
 }
 
 /* Get high bit set out of 64-bit argument, -1 if none set */
-static inline int xfs_highbit64(__uint64_t v)
+static inline int xfs_highbit64(uint64_t v)
 {
 	return fls64(v) - 1;
 }
 
 /* Get low bit set out of 32-bit argument, -1 if none set */
-static inline int xfs_lowbit32(__uint32_t v)
+static inline int xfs_lowbit32(uint32_t v)
 {
 	return ffs(v) - 1;
 }
 
 /* Get low bit set out of 64-bit argument, -1 if none set */
-static inline int xfs_lowbit64(__uint64_t v)
+static inline int xfs_lowbit64(uint64_t v)
 {
-	__uint32_t	w = (__uint32_t)v;
+	uint32_t	w = (uint32_t)v;
 	int		n = 0;
 
 	if (w) {	/* lower bits */
 		n = ffs(w);
 	} else {	/* upper bits */
-		w = (__uint32_t)(v >> 32);
+		w = (uint32_t)(v >> 32);
 		if (w) {
 			n = ffs(w);
 			if (n)

fs/xfs/libxfs/xfs_bmap.c

···
 	if (unlikely(XFS_TEST_ERROR(
 	    (XFS_IFORK_FORMAT(ip, whichfork) != XFS_DINODE_FMT_EXTENTS &&
 	     XFS_IFORK_FORMAT(ip, whichfork) != XFS_DINODE_FMT_BTREE),
-	     mp, XFS_ERRTAG_BMAPIFORMAT, XFS_RANDOM_BMAPIFORMAT))) {
+	     mp, XFS_ERRTAG_BMAPIFORMAT))) {
 		XFS_ERROR_REPORT("xfs_bmapi_read", XFS_ERRLEVEL_LOW, mp);
 		return -EFSCORRUPTED;
 	}
···
 	if (unlikely(XFS_TEST_ERROR(
 	    (XFS_IFORK_FORMAT(ip, whichfork) != XFS_DINODE_FMT_EXTENTS &&
 	     XFS_IFORK_FORMAT(ip, whichfork) != XFS_DINODE_FMT_BTREE),
-	     mp, XFS_ERRTAG_BMAPIFORMAT, XFS_RANDOM_BMAPIFORMAT))) {
+	     mp, XFS_ERRTAG_BMAPIFORMAT))) {
 		XFS_ERROR_REPORT("xfs_bmapi_write", XFS_ERRLEVEL_LOW, mp);
 		return -EFSCORRUPTED;
 	}
···
 	if (unlikely(XFS_TEST_ERROR(
 	    (XFS_IFORK_FORMAT(ip, XFS_DATA_FORK) != XFS_DINODE_FMT_EXTENTS &&
 	     XFS_IFORK_FORMAT(ip, XFS_DATA_FORK) != XFS_DINODE_FMT_BTREE),
-	     mp, XFS_ERRTAG_BMAPIFORMAT, XFS_RANDOM_BMAPIFORMAT))) {
+	     mp, XFS_ERRTAG_BMAPIFORMAT))) {
 		XFS_ERROR_REPORT("xfs_bmapi_remap", XFS_ERRLEVEL_LOW, mp);
 		return -EFSCORRUPTED;
 	}
···
 	int			whichfork;	/* data or attribute fork */
 	xfs_fsblock_t		sum;
 	xfs_filblks_t		len = *rlen;	/* length to unmap in file */
+	xfs_fileoff_t		max_len;
 
 	trace_xfs_bunmap(ip, bno, len, flags, _RET_IP_);
 
···
 	ASSERT(xfs_isilocked(ip, XFS_ILOCK_EXCL));
 	ASSERT(len > 0);
 	ASSERT(nexts >= 0);
+
+	/*
+	 * Guesstimate how many blocks we can unmap without running the risk of
+	 * blowing out the transaction with a mix of EFIs and reflink
+	 * adjustments.
+	 */
+	if (xfs_is_reflink_inode(ip) && whichfork == XFS_DATA_FORK)
+		max_len = min(len, xfs_refcount_max_unmap(tp->t_log_res));
+	else
+		max_len = len;
 
 	if (!(ifp->if_flags & XFS_IFEXTENTS) &&
 	    (error = xfs_iread_extents(tp, ip, whichfork)))
···
 
 	extno = 0;
 	while (bno != (xfs_fileoff_t)-1 && bno >= start && lastx >= 0 &&
-	       (nexts == 0 || extno < nexts)) {
+	       (nexts == 0 || extno < nexts) && max_len > 0) {
 		/*
 		 * Is the found extent after a hole in which bno lives?
 		 * Just back up to the previous extent, if so.
···
 		}
 		if (del.br_startoff + del.br_blockcount > bno + 1)
 			del.br_blockcount = bno + 1 - del.br_startoff;
+
+		/* How much can we safely unmap? */
+		if (max_len < del.br_blockcount) {
+			del.br_startoff += del.br_blockcount - max_len;
+			if (!wasdel)
+				del.br_startblock += del.br_blockcount - max_len;
+			del.br_blockcount = max_len;
+		}
+
 		sum = del.br_startblock + del.br_blockcount;
 		if (isrt &&
 		    (mod = do_mod(sum, mp->m_sb.sb_rextsize))) {
···
 		if (!isrt && wasdel)
 			xfs_mod_fdblocks(mp, (int64_t)del.br_blockcount, false);
 
+		max_len -= del.br_blockcount;
 		bno = del.br_startoff - 1;
 nodelete:
 		/*
···
 	if (unlikely(XFS_TEST_ERROR(
 	    (XFS_IFORK_FORMAT(ip, whichfork) != XFS_DINODE_FMT_EXTENTS &&
 	     XFS_IFORK_FORMAT(ip, whichfork) != XFS_DINODE_FMT_BTREE),
-	     mp, XFS_ERRTAG_BMAPIFORMAT, XFS_RANDOM_BMAPIFORMAT))) {
+	     mp, XFS_ERRTAG_BMAPIFORMAT))) {
 		XFS_ERROR_REPORT("xfs_bmap_shift_extents",
 				 XFS_ERRLEVEL_LOW, mp);
 		return -EFSCORRUPTED;
···
 	if (unlikely(XFS_TEST_ERROR(
 	    (XFS_IFORK_FORMAT(ip, whichfork) != XFS_DINODE_FMT_EXTENTS &&
 	     XFS_IFORK_FORMAT(ip, whichfork) != XFS_DINODE_FMT_BTREE),
-	     mp, XFS_ERRTAG_BMAPIFORMAT, XFS_RANDOM_BMAPIFORMAT))) {
+	     mp, XFS_ERRTAG_BMAPIFORMAT))) {
 		XFS_ERROR_REPORT("xfs_bmap_split_extent_at",
 				 XFS_ERRLEVEL_LOW, mp);
 		return -EFSCORRUPTED;
···
 	int				whichfork,
 	xfs_fileoff_t			startoff,
 	xfs_fsblock_t			startblock,
-	xfs_filblks_t			blockcount,
+	xfs_filblks_t			*blockcount,
 	xfs_exntst_t			state)
 {
-	int				error = 0, done;
+	xfs_fsblock_t			firstfsb;
+	int				error = 0;
 
 	trace_xfs_bmap_deferred(tp->t_mountp,
 			XFS_FSB_TO_AGNO(tp->t_mountp, startblock), type,
 			XFS_FSB_TO_AGBNO(tp->t_mountp, startblock),
-			ip->i_ino, whichfork, startoff, blockcount, state);
+			ip->i_ino, whichfork, startoff, *blockcount, state);
 
 	if (WARN_ON_ONCE(whichfork != XFS_DATA_FORK))
 		return -EFSCORRUPTED;
 
 	if (XFS_TEST_ERROR(false, tp->t_mountp,
-			XFS_ERRTAG_BMAP_FINISH_ONE,
-			XFS_RANDOM_BMAP_FINISH_ONE))
+			XFS_ERRTAG_BMAP_FINISH_ONE))
 		return -EIO;
 
 	switch (type) {
 	case XFS_BMAP_MAP:
-		error = xfs_bmapi_remap(tp, ip, startoff, blockcount,
+		error = xfs_bmapi_remap(tp, ip, startoff, *blockcount,
 				startblock, dfops);
+		*blockcount = 0;
 		break;
 	case XFS_BMAP_UNMAP:
-		error = xfs_bunmapi(tp, ip, startoff, blockcount,
-				XFS_BMAPI_REMAP, 1, &startblock, dfops, &done);
-		ASSERT(done);
+		error = __xfs_bunmapi(tp, ip, startoff, blockcount,
+				XFS_BMAPI_REMAP, 1, &firstfsb, dfops);
 		break;
 	default:
 		ASSERT(0);

fs/xfs/libxfs/xfs_bmap.h

···
 int	xfs_bmap_finish_one(struct xfs_trans *tp, struct xfs_defer_ops *dfops,
 		struct xfs_inode *ip, enum xfs_bmap_intent_type type,
 		int whichfork, xfs_fileoff_t startoff, xfs_fsblock_t startblock,
-		xfs_filblks_t blockcount, xfs_exntst_t state);
+		xfs_filblks_t *blockcount, xfs_exntst_t state);
 int	xfs_bmap_map_extent(struct xfs_mount *mp, struct xfs_defer_ops *dfops,
 		struct xfs_inode *ip, struct xfs_bmbt_irec *imap);
 int	xfs_bmap_unmap_extent(struct xfs_mount *mp, struct xfs_defer_ops *dfops,

fs/xfs/libxfs/xfs_bmap_btree.c

···
  */
 STATIC void
 __xfs_bmbt_get_all(
-		__uint64_t l0,
-		__uint64_t l1,
+		uint64_t l0,
+		uint64_t l1,
 		xfs_bmbt_irec_t *s)
 {
 	int	ext_flag;
···
 }
 
 STATIC void
+xfs_bmbt_init_high_key_from_rec(
+	union xfs_btree_key	*key,
+	union xfs_btree_rec	*rec)
+{
+	key->bmbt.br_startoff = cpu_to_be64(
+			xfs_bmbt_disk_get_startoff(&rec->bmbt) +
+			xfs_bmbt_disk_get_blockcount(&rec->bmbt) - 1);
+}
+
+STATIC void
 xfs_bmbt_init_rec_from_cur(
 	struct xfs_btree_cur	*cur,
 	union xfs_btree_rec	*rec)
···
 	ptr->l = 0;
 }
 
-STATIC __int64_t
+STATIC int64_t
 xfs_bmbt_key_diff(
 	struct xfs_btree_cur	*cur,
 	union xfs_btree_key	*key)
 {
-	return (__int64_t)be64_to_cpu(key->bmbt.br_startoff) -
+	return (int64_t)be64_to_cpu(key->bmbt.br_startoff) -
 				      cur->bc_rec.b.br_startoff;
+}
+
+STATIC int64_t
+xfs_bmbt_diff_two_keys(
+	struct xfs_btree_cur	*cur,
+	union xfs_btree_key	*k1,
+	union xfs_btree_key	*k2)
+{
+	return (int64_t)be64_to_cpu(k1->bmbt.br_startoff) -
+			  be64_to_cpu(k2->bmbt.br_startoff);
 }
 
 static bool
···
 };
 
 
-#if defined(DEBUG) || defined(XFS_WARN)
 STATIC int
 xfs_bmbt_keys_inorder(
 	struct xfs_btree_cur	*cur,
···
 		xfs_bmbt_disk_get_blockcount(&r1->bmbt) <=
 		xfs_bmbt_disk_get_startoff(&r2->bmbt);
 }
-#endif	/* DEBUG */
 
 static const struct xfs_btree_ops xfs_bmbt_ops = {
 	.rec_len		= sizeof(xfs_bmbt_rec_t),
···
 	.get_minrecs		= xfs_bmbt_get_minrecs,
 	.get_dmaxrecs		= xfs_bmbt_get_dmaxrecs,
 	.init_key_from_rec	= xfs_bmbt_init_key_from_rec,
+	.init_high_key_from_rec	= xfs_bmbt_init_high_key_from_rec,
 	.init_rec_from_cur	= xfs_bmbt_init_rec_from_cur,
 	.init_ptr_from_cur	= xfs_bmbt_init_ptr_from_cur,
 	.key_diff		= xfs_bmbt_key_diff,
+	.diff_two_keys		= xfs_bmbt_diff_two_keys,
 	.buf_ops		= &xfs_bmbt_buf_ops,
-#if defined(DEBUG) || defined(XFS_WARN)
 	.keys_inorder		= xfs_bmbt_keys_inorder,
 	.recs_inorder		= xfs_bmbt_recs_inorder,
-#endif
 };
 
 /*

fs/xfs/libxfs/xfs_btree.c

···
 /*
  * Btree magic numbers.
  */
-static const __uint32_t xfs_magics[2][XFS_BTNUM_MAX] = {
+static const uint32_t xfs_magics[2][XFS_BTNUM_MAX] = {
 	{ XFS_ABTB_MAGIC, XFS_ABTC_MAGIC, 0, XFS_BMAP_MAGIC, XFS_IBT_MAGIC,
 	  XFS_FIBT_MAGIC, 0 },
 	{ XFS_ABTB_CRC_MAGIC, XFS_ABTC_CRC_MAGIC, XFS_RMAP_CRC_MAGIC,
···
 	  XFS_REFC_CRC_MAGIC }
 };
 
-__uint32_t
+uint32_t
 xfs_btree_magic(
 	int			crc,
 	xfs_btnum_t		btnum)
 {
-	__uint32_t		magic = xfs_magics[crc][btnum];
+	uint32_t		magic = xfs_magics[crc][btnum];
 
 	/* Ensure we asked for crc for crc-only magics. */
 	ASSERT(magic != 0);
···
 			be64_to_cpu(block->bb_u.l.bb_rightsib)));
 
 	if (unlikely(XFS_TEST_ERROR(!lblock_ok, mp,
-			XFS_ERRTAG_BTREE_CHECK_LBLOCK,
-			XFS_RANDOM_BTREE_CHECK_LBLOCK))) {
+			XFS_ERRTAG_BTREE_CHECK_LBLOCK))) {
 		if (bp)
 			trace_xfs_btree_corrupt(bp, _RET_IP_);
 		XFS_ERROR_REPORT(__func__, XFS_ERRLEVEL_LOW, mp);
···
 		block->bb_u.s.bb_rightsib;
 
 	if (unlikely(XFS_TEST_ERROR(!sblock_ok, mp,
-			XFS_ERRTAG_BTREE_CHECK_SBLOCK,
-			XFS_RANDOM_BTREE_CHECK_SBLOCK))) {
+			XFS_ERRTAG_BTREE_CHECK_SBLOCK))) {
 		if (bp)
 			trace_xfs_btree_corrupt(bp, _RET_IP_);
 		XFS_ERROR_REPORT(__func__, XFS_ERRLEVEL_LOW, mp);
···
 /*
  * Return a pointer to the n-th record in the btree block.
  */
-STATIC union xfs_btree_rec *
+union xfs_btree_rec *
 xfs_btree_rec_addr(
 	struct xfs_btree_cur	*cur,
 	int			n,
···
 /*
  * Return a pointer to the n-th key in the btree block.
  */
-STATIC union xfs_btree_key *
+union xfs_btree_key *
 xfs_btree_key_addr(
 	struct xfs_btree_cur	*cur,
 	int			n,
···
 /*
  * Return a pointer to the n-th high key in the btree block.
  */
-STATIC union xfs_btree_key *
+union xfs_btree_key *
 xfs_btree_high_key_addr(
 	struct xfs_btree_cur	*cur,
 	int			n,
···
 /*
  * Return a pointer to the n-th block pointer in the btree block.
  */
-STATIC union xfs_btree_ptr *
+union xfs_btree_ptr *
 xfs_btree_ptr_addr(
 	struct xfs_btree_cur	*cur,
 	int			n,
···
  * Retrieve the block pointer from the cursor at the given level.
  * This may be an inode btree root or from a buffer.
  */
-STATIC struct xfs_btree_block *		/* generic btree block pointer */
+struct xfs_btree_block *		/* generic btree block pointer */
 xfs_btree_get_block(
 	struct xfs_btree_cur	*cur,	/* btree cursor */
 	int			level,	/* level in btree */
···
  */
 void
 xfs_btree_offsets(
-	__int64_t	fields,		/* bitmask of fields */
+	int64_t		fields,		/* bitmask of fields */
 	const short	*offsets,	/* table of field offsets */
 	int		nbits,		/* number of bits to inspect */
 	int		*first,		/* output: first byte offset */
 	int		*last)		/* output: last byte offset */
 {
 	int		i;		/* current bit number */
-	__int64_t	imask;		/* mask for current bit number */
+	int64_t		imask;		/* mask for current bit number */
 
 	ASSERT(fields != 0);
 	/*
···
 	return error;
 }
 
-STATIC int
+int
 xfs_btree_lookup_get_block(
 	struct xfs_btree_cur	*cur,	/* btree cursor */
 	int			level,	/* level in the btree */
···
 	int			*stat)	/* success/failure */
 {
 	struct xfs_btree_block	*block;	/* current btree block */
-	__int64_t		diff;	/* difference for the current key */
+	int64_t			diff;	/* difference for the current key */
 	int			error;	/* error return value */
 	int			keyno;	/* current key number */
 	int			level;	/* level in the btree */
···
  * recovery completion writes the changes to disk.
  */
 struct xfs_btree_block_change_owner_info {
-	__uint64_t		new_owner;
+	uint64_t		new_owner;
 	struct list_head	*buffer_list;
 };
 
···
 int
 xfs_btree_change_owner(
 	struct xfs_btree_cur	*cur,
-	__uint64_t		new_owner,
+	uint64_t		new_owner,
 	struct list_head	*buffer_list)
 {
 	struct xfs_btree_block_change_owner_info	bbcoi;
···
 {
 	union xfs_btree_rec		*recp;
 	union xfs_btree_key		rec_key;
-	__int64_t			diff;
+	int64_t				diff;
 	int				stat;
 	bool				firstrec = true;
 	int				error;
···
 	union xfs_btree_key		*hkp;
 	union xfs_btree_rec		*recp;
 	struct xfs_btree_block		*block;
-	__int64_t			ldiff;
-	__int64_t			hdiff;
+	int64_t				ldiff;
+	int64_t				hdiff;
 	int				level;
 	struct xfs_buf			*bp;
 	int				i;
···
 	xfs_btree_query_range_fn	fn,
 	void				*priv)
 {
-	union xfs_btree_irec		low_rec;
-	union xfs_btree_irec		high_rec;
+	union xfs_btree_key		low_key;
+	union xfs_btree_key		high_key;
 
-	memset(&low_rec, 0, sizeof(low_rec));
-	memset(&high_rec, 0xFF, sizeof(high_rec));
-	return xfs_btree_query_range(cur, &low_rec, &high_rec, fn, priv);
+	memset(&cur->bc_rec, 0, sizeof(cur->bc_rec));
+	memset(&low_key, 0, sizeof(low_key));
+	memset(&high_key, 0xFF, sizeof(high_key));
+
+	return xfs_btree_simple_query_range(cur, &low_key, &high_key, fn, priv);
 }
 
 /*

fs/xfs/libxfs/xfs_btree.h

···
 #define	XFS_BTNUM_RMAP	((xfs_btnum_t)XFS_BTNUM_RMAPi)
 #define	XFS_BTNUM_REFC	((xfs_btnum_t)XFS_BTNUM_REFCi)
 
-__uint32_t xfs_btree_magic(int crc, xfs_btnum_t btnum);
+uint32_t xfs_btree_magic(int crc, xfs_btnum_t btnum);
 
 /*
  * For logging record fields.
···
 					  union xfs_btree_rec *rec);
 
 	/* difference between key value and cursor value */
-	__int64_t (*key_diff)(struct xfs_btree_cur *cur,
+	int64_t (*key_diff)(struct xfs_btree_cur *cur,
 			      union xfs_btree_key *key);
 
 	/*
 	 * Difference between key2 and key1 -- positive if key1 > key2,
 	 * negative if key1 < key2, and zero if equal.
 	 */
-	__int64_t (*diff_two_keys)(struct xfs_btree_cur *cur,
+	int64_t (*diff_two_keys)(struct xfs_btree_cur *cur,
 				   union xfs_btree_key *key1,
 				   union xfs_btree_key *key2);
 
 	const struct xfs_buf_ops	*buf_ops;
 
-#if defined(DEBUG) || defined(XFS_WARN)
 	/* check that k1 is lower than k2 */
 	int	(*keys_inorder)(struct xfs_btree_cur *cur,
 				union xfs_btree_key *k1,
···
 	int	(*recs_inorder)(struct xfs_btree_cur *cur,
 				union xfs_btree_rec *r1,
 				union xfs_btree_rec *r2);
-#endif
 };
 
 /*
···
 	union xfs_btree_irec	bc_rec;	/* current insert/search record value */
 	struct xfs_buf	*bc_bufs[XFS_BTREE_MAXLEVELS];	/* buf ptr per level */
 	int		bc_ptrs[XFS_BTREE_MAXLEVELS];	/* key/record # */
-	__uint8_t	bc_ra[XFS_BTREE_MAXLEVELS];	/* readahead bits */
+	uint8_t		bc_ra[XFS_BTREE_MAXLEVELS];	/* readahead bits */
 #define	XFS_BTCUR_LEFTRA	1	/* left sibling has been read-ahead */
 #define	XFS_BTCUR_RIGHTRA	2	/* right sibling has been read-ahead */
-	__uint8_t	bc_nlevels;	/* number of levels in the tree */
-	__uint8_t	bc_blocklog;	/* log2(blocksize) of btree blocks */
+	uint8_t		bc_nlevels;	/* number of levels in the tree */
+	uint8_t		bc_blocklog;	/* log2(blocksize) of btree blocks */
 	xfs_btnum_t	bc_btnum;	/* identifies which btree type */
 	int		bc_statoff;	/* offset of btre stats array */
 	union {
···
  */
 void
 xfs_btree_offsets(
-	__int64_t		fields,	/* bitmask of fields */
+	int64_t			fields,	/* bitmask of fields */
 	const short		*offsets,/* table of field offsets */
 	int			nbits,	/* number of bits to inspect */
 	int			*first,	/* output: first byte offset */
···
 int xfs_btree_insert(struct xfs_btree_cur *, int *);
 int xfs_btree_delete(struct xfs_btree_cur *, int *);
 int xfs_btree_get_rec(struct xfs_btree_cur *, union xfs_btree_rec **, int *);
-int xfs_btree_change_owner(struct xfs_btree_cur *cur, __uint64_t new_owner,
+int xfs_btree_change_owner(struct xfs_btree_cur *cur, uint64_t new_owner,
 			   struct list_head *buffer_list);
 
 /*
···
 }
 
 static inline void xfs_btree_set_numrecs(struct xfs_btree_block *block,
-		__uint16_t numrecs)
+		uint16_t numrecs)
 {
 	block->bb_numrecs = cpu_to_be16(numrecs);
 }
···
 		xfs_btree_visit_blocks_fn fn, void *data);
 
 int xfs_btree_count_blocks(struct xfs_btree_cur *cur, xfs_extlen_t *blocks);
+
+union xfs_btree_rec *xfs_btree_rec_addr(struct xfs_btree_cur *cur, int n,
+		struct xfs_btree_block *block);
+union xfs_btree_key *xfs_btree_key_addr(struct xfs_btree_cur *cur, int n,
+		struct xfs_btree_block *block);
+union xfs_btree_key *xfs_btree_high_key_addr(struct xfs_btree_cur *cur, int n,
+		struct xfs_btree_block *block);
+union xfs_btree_ptr *xfs_btree_ptr_addr(struct xfs_btree_cur *cur, int n,
+		struct xfs_btree_block *block);
+int xfs_btree_lookup_get_block(struct xfs_btree_cur *cur, int level,
+		union xfs_btree_ptr *pp, struct xfs_btree_block **blkp);
+struct xfs_btree_block *xfs_btree_get_block(struct xfs_btree_cur *cur,
+		int level, struct xfs_buf **bpp);
 
 #endif	/* __XFS_BTREE_H__ */

fs/xfs/libxfs/xfs_cksum.h

···
 #ifndef _XFS_CKSUM_H
 #define _XFS_CKSUM_H 1
 
-#define XFS_CRC_SEED	(~(__uint32_t)0)
+#define XFS_CRC_SEED	(~(uint32_t)0)
 
 /*
  * Calculate the intermediate checksum for a buffer that has the CRC field
···
  * cksum_offset parameter. We do not modify the buffer during verification,
  * hence we have to split the CRC calculation across the cksum_offset.
  */
-static inline __uint32_t
+static inline uint32_t
 xfs_start_cksum_safe(char *buffer, size_t length, unsigned long cksum_offset)
 {
-	__uint32_t zero = 0;
-	__uint32_t crc;
+	uint32_t zero = 0;
+	uint32_t crc;
 
 	/* Calculate CRC up to the checksum. */
 	crc = crc32c(XFS_CRC_SEED, buffer, cksum_offset);
···
  * Fast CRC method where the buffer is modified. Callers must have exclusive
  * access to the buffer while the calculation takes place.
  */
-static inline __uint32_t
+static inline uint32_t
 xfs_start_cksum_update(char *buffer, size_t length, unsigned long cksum_offset)
 {
 	/* zero the CRC field */
···
  * so that it is consistent on disk.
  */
 static inline __le32
-xfs_end_cksum(__uint32_t crc)
+xfs_end_cksum(uint32_t crc)
 {
 	return ~cpu_to_le32(crc);
 }
···
 static inline void
 xfs_update_cksum(char *buffer, size_t length, unsigned long cksum_offset)
 {
-	__uint32_t crc = xfs_start_cksum_update(buffer, length, cksum_offset);
+	uint32_t crc = xfs_start_cksum_update(buffer, length, cksum_offset);
 
 	*(__le32 *)(buffer + cksum_offset) = xfs_end_cksum(crc);
 }
···
 static inline int
 xfs_verify_cksum(char *buffer, size_t length, unsigned long cksum_offset)
 {
-	__uint32_t crc = xfs_start_cksum_safe(buffer, length, cksum_offset);
+	uint32_t crc = xfs_start_cksum_safe(buffer, length, cksum_offset);
 
 	return *(__le32 *)(buffer + cksum_offset) == xfs_end_cksum(crc);
 }

fs/xfs/libxfs/xfs_da_btree.c

···
 
 	err = xfs_da_read_buf(tp, dp, bno, mappedbno, bpp,
 					which_fork, &xfs_da3_node_buf_ops);
-	if (!err && tp) {
+	if (!err && tp && *bpp) {
 		struct xfs_da_blkinfo	*info = (*bpp)->b_addr;
 		int			type;
 
···
 			return;
 		break;
 	case XFS_DIR2_LEAFN_MAGIC:
-		lasthash = xfs_dir2_leafn_lasthash(dp, blk->bp, &count);
+		lasthash = xfs_dir2_leaf_lasthash(dp, blk->bp, &count);
 		if (count == 0)
 			return;
 		break;
···
 		if (blk->magic == XFS_DIR2_LEAFN_MAGIC ||
 		    blk->magic == XFS_DIR3_LEAFN_MAGIC) {
 			blk->magic = XFS_DIR2_LEAFN_MAGIC;
-			blk->hashval = xfs_dir2_leafn_lasthash(args->dp,
-							       blk->bp, NULL);
+			blk->hashval = xfs_dir2_leaf_lasthash(args->dp,
+							      blk->bp, NULL);
 			break;
 		}
 
···
 			blk->magic = XFS_DIR2_LEAFN_MAGIC;
 			ASSERT(level == path->active-1);
 			blk->index = 0;
-			blk->hashval = xfs_dir2_leafn_lasthash(args->dp,
-							       blk->bp, NULL);
+			blk->hashval = xfs_dir2_leaf_lasthash(args->dp,
+							      blk->bp, NULL);
 			break;
 		default:
 			ASSERT(0);
···
  * This is implemented with some source-level loop unrolling.
  */
 xfs_dahash_t
-xfs_da_hashname(const __uint8_t *name, int namelen)
+xfs_da_hashname(const uint8_t *name, int namelen)
 {
 	xfs_dahash_t hash;
 

fs/xfs/libxfs/xfs_da_btree.h

···
  */
 typedef struct xfs_da_args {
 	struct xfs_da_geometry *geo;	/* da block geometry */
-	const __uint8_t	*name;		/* string (maybe not NULL terminated) */
+	const uint8_t		*name;		/* string (maybe not NULL terminated) */
 	int		namelen;	/* length of string (maybe no NULL) */
-	__uint8_t	filetype;	/* filetype of inode for directories */
-	__uint8_t	*value;		/* set of bytes (maybe contain NULLs) */
+	uint8_t		filetype;	/* filetype of inode for directories */
+	uint8_t		*value;		/* set of bytes (maybe contain NULLs) */
 	int		valuelen;	/* length of value */
 	int		flags;		/* argument flags (eg: ATTR_NOCREATE) */
 	xfs_dahash_t	hashval;	/* hash value of name */
···
 int	xfs_da_shrink_inode(xfs_da_args_t *args, xfs_dablk_t dead_blkno,
 					  struct xfs_buf *dead_buf);
 
-uint xfs_da_hashname(const __uint8_t *name_string, int name_length);
+uint xfs_da_hashname(const uint8_t *name_string, int name_length);
 enum xfs_dacmp xfs_da_compname(struct xfs_da_args *args,
 				const unsigned char *name, int len);
 

fs/xfs/libxfs/xfs_da_format.c

···
 	struct xfs_dir2_sf_hdr	*hdr,
 	int			len)
 {
-	return xfs_dir2_sf_entsize(hdr, len) + sizeof(__uint8_t);
+	return xfs_dir2_sf_entsize(hdr, len) + sizeof(uint8_t);
 }
 
 static struct xfs_dir2_sf_entry *
···
  * not necessary. For non-filetype enable directories, the type is always
  * unknown and we never store the value.
  */
-static __uint8_t
+static uint8_t
 xfs_dir2_sfe_get_ftype(
 	struct xfs_dir2_sf_entry *sfep)
 {
···
 static void
 xfs_dir2_sfe_put_ftype(
 	struct xfs_dir2_sf_entry *sfep,
-	__uint8_t		ftype)
+	uint8_t			ftype)
 {
 	ASSERT(ftype < XFS_DIR3_FT_MAX);
 }
 
-static __uint8_t
+static uint8_t
 xfs_dir3_sfe_get_ftype(
 	struct xfs_dir2_sf_entry *sfep)
 {
-	__uint8_t	ftype;
+	uint8_t		ftype;
 
 	ftype = sfep->name[sfep->namelen];
 	if (ftype >= XFS_DIR3_FT_MAX)
···
 static void
 xfs_dir3_sfe_put_ftype(
 	struct xfs_dir2_sf_entry *sfep,
-	__uint8_t		ftype)
+	uint8_t			ftype)
 {
 	ASSERT(ftype < XFS_DIR3_FT_MAX);
 
···
 static xfs_ino_t
 xfs_dir2_sf_get_ino(
 	struct xfs_dir2_sf_hdr	*hdr,
-	__uint8_t		*from)
+	uint8_t			*from)
 {
 	if (hdr->i8count)
 		return get_unaligned_be64(from) & 0x00ffffffffffffffULL;
···
 static void
 xfs_dir2_sf_put_ino(
 	struct xfs_dir2_sf_hdr	*hdr,
-	__uint8_t		*to,
+	uint8_t			*to,
 	xfs_ino_t		ino)
 {
 	ASSERT((ino & 0xff00000000000000ULL) == 0);
···
 
 #define XFS_DIR3_DATA_ENTSIZE(n)					\
 	round_up((offsetof(struct xfs_dir2_data_entry, name[0]) + (n) +	\
-		 sizeof(xfs_dir2_data_off_t) + sizeof(__uint8_t)),	\
+		 sizeof(xfs_dir2_data_off_t) + sizeof(uint8_t)),	\
 		XFS_DIR2_DATA_ALIGN)
 
 static int
···
 	return XFS_DIR3_DATA_ENTSIZE(n);
 }
 
-static __uint8_t
+static uint8_t
 xfs_dir2_data_get_ftype(
 	struct xfs_dir2_data_entry *dep)
 {
···
 static void
 xfs_dir2_data_put_ftype(
 	struct xfs_dir2_data_entry *dep,
-	__uint8_t		ftype)
+	uint8_t			ftype)
 {
 	ASSERT(ftype < XFS_DIR3_FT_MAX);
 }
 
-static __uint8_t
+static uint8_t
 xfs_dir3_data_get_ftype(
 	struct xfs_dir2_data_entry *dep)
 {
-	__uint8_t	ftype = dep->name[dep->namelen];
+	uint8_t		ftype = dep->name[dep->namelen];
 
 	if (ftype >= XFS_DIR3_FT_MAX)
 		return XFS_DIR3_FT_UNKNOWN;
···
 static void
 xfs_dir3_data_put_ftype(
 	struct xfs_dir2_data_entry *dep,
-	__uint8_t		type)
+	uint8_t			type)
 {
 	ASSERT(type < XFS_DIR3_FT_MAX);
 	ASSERT(dep->namelen != 0);

fs/xfs/libxfs/xfs_da_format.h

···
  * appropriate.
  */
 struct xfs_da3_icnode_hdr {
-	__uint32_t	forw;
-	__uint32_t	back;
-	__uint16_t	magic;
-	__uint16_t	count;
-	__uint16_t	level;
+	uint32_t	forw;
+	uint32_t	back;
+	uint16_t	magic;
+	uint16_t	count;
+	uint16_t	level;
 };
 
 /*
···
 /*
  * Byte offset in data block and shortform entry.
  */
-typedef	__uint16_t	xfs_dir2_data_off_t;
+typedef uint16_t	xfs_dir2_data_off_t;
 #define	NULLDATAOFF	0xffffU
 typedef uint		xfs_dir2_data_aoff_t;	/* argument form */
 
 /*
  * Offset in data space of a data entry.
  */
-typedef	__uint32_t	xfs_dir2_dataptr_t;
+typedef uint32_t	xfs_dir2_dataptr_t;
 #define	XFS_DIR2_MAX_DATAPTR	((xfs_dir2_dataptr_t)0xffffffff)
 #define	XFS_DIR2_NULL_DATAPTR	((xfs_dir2_dataptr_t)0)
 
···
 /*
  * Directory block number (logical dirblk in file)
  */
-typedef	__uint32_t	xfs_dir2_db_t;
+typedef uint32_t	xfs_dir2_db_t;
 
 #define XFS_INO32_SIZE	4
 #define XFS_INO64_SIZE	8
···
  * over them.
  */
 typedef struct xfs_dir2_sf_hdr {
-	__uint8_t		count;		/* count of entries */
-	__uint8_t		i8count;	/* count of 8-byte inode #s */
-	__uint8_t		parent[8];	/* parent dir inode number */
+	uint8_t			count;		/* count of entries */
+	uint8_t			i8count;	/* count of 8-byte inode #s */
+	uint8_t			parent[8];	/* parent dir inode number */
 } __packed xfs_dir2_sf_hdr_t;
 
 typedef struct xfs_dir2_sf_entry {
···
 };
 
 struct xfs_dir3_icleaf_hdr {
-	__uint32_t		forw;
-	__uint32_t		back;
-	__uint16_t		magic;
-	__uint16_t		count;
-	__uint16_t		stale;
+	uint32_t		forw;
+	uint32_t		back;
+	uint16_t		magic;
+	uint16_t		count;
+	uint16_t		stale;
 };
 
 /*
···
  * xfs_dir3_free_hdr_from_disk/xfs_dir3_free_hdr_to_disk.
  */
 struct xfs_dir3_icfree_hdr {
-	__uint32_t	magic;
-	__uint32_t	firstdb;
-	__uint32_t	nvalid;
-	__uint32_t	nused;
+	uint32_t	magic;
+	uint32_t	firstdb;
+	uint32_t	nvalid;
+	uint32_t	nused;
 
 };
 
···
 		__u8	padding;
 	} hdr;
 	struct xfs_attr_sf_entry {
-		__uint8_t namelen;	/* actual length of name (no NULL) */
-		__uint8_t valuelen;	/* actual length of value (no NULL) */
-		__uint8_t flags;	/* flags bits (see xfs_attr_leaf.h) */
-		__uint8_t nameval[1];	/* name & value bytes concatenated */
+		uint8_t namelen;	/* actual length of name (no NULL) */
+		uint8_t valuelen;	/* actual length of value (no NULL) */
+		uint8_t flags;	/* flags bits (see xfs_attr_leaf.h) */
+		uint8_t nameval[1];	/* name & value bytes concatenated */
 	} list[1];			/* variable sized array */
 } xfs_attr_shortform_t;
 
···
  * incore, neutral version of the attribute leaf header
  */
 struct xfs_attr3_icleaf_hdr {
-	__uint32_t	forw;
-	__uint32_t	back;
-	__uint16_t	magic;
-	__uint16_t	count;
-	__uint16_t	usedbytes;
+	uint32_t	forw;
+	uint32_t	back;
+	uint16_t	magic;
+	uint16_t	count;
+	uint16_t	usedbytes;
 	/*
 	 * firstused is 32-bit here instead of 16-bit like the on-disk variant
 	 * to support maximum fsb size of 64k without overflow issues throughout
 	 * the attr code. Instead, the overflow condition is handled on
 	 * conversion to/from disk.
 	 */
-	__uint32_t	firstused;
+	uint32_t	firstused;
 	__u8		holes;
 	struct {
-		__uint16_t	base;
-		__uint16_t	size;
+		uint16_t	base;
+		uint16_t	size;
 	} freemap[XFS_ATTR_LEAF_MAPSIZE];
 };
 

fs/xfs/libxfs/xfs_dir2.c

···
 		agblkno != 0 &&
 		ioff < (1 << mp->m_sb.sb_inopblog) &&
 		XFS_AGINO_TO_INO(mp, agno, agino) == ino;
-	if (unlikely(XFS_TEST_ERROR(!ino_ok, mp, XFS_ERRTAG_DIR_INO_VALIDATE,
-			XFS_RANDOM_DIR_INO_VALIDATE))) {
+	if (unlikely(XFS_TEST_ERROR(!ino_ok, mp, XFS_ERRTAG_DIR_INO_VALIDATE))) {
 		xfs_warn(mp, "Invalid inode number 0x%Lx",
 				(unsigned long long) ino);
 		XFS_ERROR_REPORT("xfs_dir_ino_validate", XFS_ERRLEVEL_LOW, mp);

fs/xfs/libxfs/xfs_dir2.h

···
 	struct xfs_dir2_sf_entry *
 		(*sf_nextentry)(struct xfs_dir2_sf_hdr *hdr,
 				struct xfs_dir2_sf_entry *sfep);
-	__uint8_t (*sf_get_ftype)(struct xfs_dir2_sf_entry *sfep);
+	uint8_t (*sf_get_ftype)(struct xfs_dir2_sf_entry *sfep);
 	void	(*sf_put_ftype)(struct xfs_dir2_sf_entry *sfep,
-				__uint8_t ftype);
+				uint8_t ftype);
 	xfs_ino_t (*sf_get_ino)(struct xfs_dir2_sf_hdr *hdr,
 				struct xfs_dir2_sf_entry *sfep);
 	void	(*sf_put_ino)(struct xfs_dir2_sf_hdr *hdr,
···
 				     xfs_ino_t ino);
 
 	int	(*data_entsize)(int len);
-	__uint8_t (*data_get_ftype)(struct xfs_dir2_data_entry *dep);
+	uint8_t (*data_get_ftype)(struct xfs_dir2_data_entry *dep);
 	void	(*data_put_ftype)(struct xfs_dir2_data_entry *dep,
-				__uint8_t ftype);
+				uint8_t ftype);
 	__be16 * (*data_entry_tag_p)(struct xfs_dir2_data_entry *dep);
 	struct xfs_dir2_data_free *
 		(*data_bestfree_p)(struct xfs_dir2_data_hdr *hdr);

fs/xfs/libxfs/xfs_dir2_block.c

···
 
 	err = xfs_da_read_buf(tp, dp, mp->m_dir_geo->datablk, -1, bpp,
 				XFS_DATA_FORK, &xfs_dir3_block_buf_ops);
-	if (!err && tp)
+	if (!err && tp && *bpp)
 		xfs_trans_buf_set_type(tp, *bpp, XFS_BLFT_DIR_BLOCK_BUF);
 	return err;
 }

fs/xfs/libxfs/xfs_dir2_leaf.c

···
 static bool
 xfs_dir3_leaf_verify(
 	struct xfs_buf		*bp,
-	__uint16_t		magic)
+	uint16_t		magic)
 {
 	struct xfs_mount	*mp = bp->b_target->bt_mount;
 	struct xfs_dir2_leaf	*leaf = bp->b_addr;
···
 
 	if (xfs_sb_version_hascrc(&mp->m_sb)) {
 		struct xfs_dir3_leaf_hdr *leaf3 = bp->b_addr;
-		__uint16_t		magic3;
+		uint16_t		magic3;
 
 		magic3 = (magic == XFS_DIR2_LEAF1_MAGIC) ? XFS_DIR3_LEAF1_MAGIC
 							 : XFS_DIR3_LEAFN_MAGIC;
···
 static void
 __read_verify(
 	struct xfs_buf  *bp,
-	__uint16_t	magic)
+	uint16_t	magic)
 {
 	struct xfs_mount	*mp = bp->b_target->bt_mount;
 
···
 static void
 __write_verify(
 	struct xfs_buf  *bp,
-	__uint16_t	magic)
+	uint16_t	magic)
 {
 	struct xfs_mount	*mp = bp->b_target->bt_mount;
 	struct xfs_buf_log_item	*bip = bp->b_fspriv;
···
 	.verify_write = xfs_dir3_leafn_write_verify,
 };
 
-static int
+int
 xfs_dir3_leaf_read(
 	struct xfs_trans	*tp,
 	struct xfs_inode	*dp,
···
 
 	err = xfs_da_read_buf(tp, dp, fbno, mappedbno, bpp,
 				XFS_DATA_FORK, &xfs_dir3_leaf1_buf_ops);
-	if (!err && tp)
+	if (!err && tp && *bpp)
 		xfs_trans_buf_set_type(tp, *bpp, XFS_BLFT_DIR_LEAF1_BUF);
 	return err;
 }
···
 
 	err = xfs_da_read_buf(tp, dp, fbno, mappedbno, bpp,
 				XFS_DATA_FORK, &xfs_dir3_leafn_buf_ops);
-	if (!err && tp)
+	if (!err && tp && *bpp)
 		xfs_trans_buf_set_type(tp, *bpp, XFS_BLFT_DIR_LEAFN_BUF);
 	return err;
 }
···
 	struct xfs_trans	*tp,
 	struct xfs_buf		*bp,
 	xfs_ino_t		owner,
-	__uint16_t		type)
+	uint16_t		type)
 {
 	struct xfs_dir2_leaf	*leaf = bp->b_addr;
 
···
 	xfs_da_args_t		*args,
 	xfs_dir2_db_t		bno,
 	struct xfs_buf		**bpp,
-	__uint16_t		magic)
+	uint16_t		magic)
 {
 	struct xfs_inode	*dp = args->dp;
 	struct xfs_trans	*tp = args->trans;

fs/xfs/libxfs/xfs_dir2_node.c

···
  * Stale entries are ok.
  */
 xfs_dahash_t					/* hash value */
-xfs_dir2_leafn_lasthash(
+xfs_dir2_leaf_lasthash(
 	struct xfs_inode *dp,
 	struct xfs_buf	*bp,			/* leaf buffer */
 	int		*count)			/* count of entries in leaf */
···
 	dp->d_ops->leaf_hdr_from_disk(&leafhdr, leaf);
 
 	ASSERT(leafhdr.magic == XFS_DIR2_LEAFN_MAGIC ||
-	       leafhdr.magic == XFS_DIR3_LEAFN_MAGIC);
+	       leafhdr.magic == XFS_DIR3_LEAFN_MAGIC ||
+	       leafhdr.magic == XFS_DIR2_LEAF1_MAGIC ||
+	       leafhdr.magic == XFS_DIR3_LEAF1_MAGIC);
 
 	if (count)
 		*count = leafhdr.count;
···
 	/*
 	 * Update last hashval in each block since we added the name.
 	 */
-	oldblk->hashval = xfs_dir2_leafn_lasthash(dp, oldblk->bp, NULL);
-	newblk->hashval = xfs_dir2_leafn_lasthash(dp, newblk->bp, NULL);
+	oldblk->hashval = xfs_dir2_leaf_lasthash(dp, oldblk->bp, NULL);
+	newblk->hashval = xfs_dir2_leaf_lasthash(dp, newblk->bp, NULL);
 	xfs_dir3_leaf_check(dp, oldblk->bp);
 	xfs_dir3_leaf_check(dp, newblk->bp);
 	return error;

fs/xfs/libxfs/xfs_dir2_priv.h

···
 		struct xfs_buf **bpp);
 
 /* xfs_dir2_leaf.c */
+extern int xfs_dir3_leaf_read(struct xfs_trans *tp, struct xfs_inode *dp,
+		xfs_dablk_t fbno, xfs_daddr_t mappedbno, struct xfs_buf **bpp);
 extern int xfs_dir3_leafn_read(struct xfs_trans *tp, struct xfs_inode *dp,
 		xfs_dablk_t fbno, xfs_daddr_t mappedbno, struct xfs_buf **bpp);
 extern int xfs_dir2_block_to_leaf(struct xfs_da_args *args,
···
 		struct xfs_dir2_leaf_entry *ents, int *indexp,
 		int *lowstalep, int *highstalep, int *lowlogp, int *highlogp);
 extern int xfs_dir3_leaf_get_buf(struct xfs_da_args *args, xfs_dir2_db_t bno,
-		struct xfs_buf **bpp, __uint16_t magic);
+		struct xfs_buf **bpp, uint16_t magic);
 extern void xfs_dir3_leaf_log_ents(struct xfs_da_args *args,
 		struct xfs_buf *bp, int first, int last);
 extern void xfs_dir3_leaf_log_header(struct xfs_da_args *args,
···
 /* xfs_dir2_node.c */
 extern int xfs_dir2_leaf_to_node(struct xfs_da_args *args,
 		struct xfs_buf *lbp);
-extern xfs_dahash_t xfs_dir2_leafn_lasthash(struct xfs_inode *dp,
+extern xfs_dahash_t xfs_dir2_leaf_lasthash(struct xfs_inode *dp,
 		struct xfs_buf *bp, int *count);
 extern int xfs_dir2_leafn_lookup_int(struct xfs_buf *bp,
 		struct xfs_da_args *args, int *indexp,
···
 extern int xfs_dir2_sf_verify(struct xfs_inode *ip);
 
 /* xfs_dir2_readdir.c */
-extern int xfs_readdir(struct xfs_inode *dp, struct dir_context *ctx,
-		       size_t bufsize);
+extern int xfs_readdir(struct xfs_trans *tp, struct xfs_inode *dp,
+		       struct dir_context *ctx, size_t bufsize);
 
 #endif /* __XFS_DIR2_PRIV_H__ */

fs/xfs/libxfs/xfs_dir2_sf.c

···
 	int				offset;
 	int				size;
 	int				error;
-	__uint8_t			filetype;
+	uint8_t				filetype;
 
 	ASSERT(ip->i_d.di_format == XFS_DINODE_FMT_LOCAL);
 	/*

fs/xfs/libxfs/xfs_format.h

···
  * Must be padded to 64 bit alignment.
  */
 typedef struct xfs_sb {
-	__uint32_t	sb_magicnum;	/* magic number == XFS_SB_MAGIC */
-	__uint32_t	sb_blocksize;	/* logical block size, bytes */
+	uint32_t	sb_magicnum;	/* magic number == XFS_SB_MAGIC */
+	uint32_t	sb_blocksize;	/* logical block size, bytes */
 	xfs_rfsblock_t	sb_dblocks;	/* number of data blocks */
 	xfs_rfsblock_t	sb_rblocks;	/* number of realtime blocks */
 	xfs_rtblock_t	sb_rextents;	/* number of realtime extents */
···
 	xfs_agnumber_t	sb_agcount;	/* number of allocation groups */
 	xfs_extlen_t	sb_rbmblocks;	/* number of rt bitmap blocks */
 	xfs_extlen_t	sb_logblocks;	/* number of log blocks */
-	__uint16_t	sb_versionnum;	/* header version == XFS_SB_VERSION */
-	__uint16_t	sb_sectsize;	/* volume sector size, bytes */
-	__uint16_t	sb_inodesize;	/* inode size, bytes */
-	__uint16_t	sb_inopblock;	/* inodes per block */
+	uint16_t	sb_versionnum;	/* header version == XFS_SB_VERSION */
+	uint16_t	sb_sectsize;	/* volume sector size, bytes */
+	uint16_t	sb_inodesize;	/* inode size, bytes */
+	uint16_t	sb_inopblock;	/* inodes per block */
 	char		sb_fname[12];	/* file system name */
-	__uint8_t	sb_blocklog;	/* log2 of sb_blocksize */
-	__uint8_t	sb_sectlog;	/* log2 of sb_sectsize */
-	__uint8_t	sb_inodelog;	/* log2 of sb_inodesize */
-	__uint8_t	sb_inopblog;	/* log2 of sb_inopblock */
-	__uint8_t	sb_agblklog;	/* log2 of sb_agblocks (rounded up) */
-	__uint8_t	sb_rextslog;	/* log2 of sb_rextents */
-	__uint8_t	sb_inprogress;	/* mkfs is in progress, don't mount */
-	__uint8_t	sb_imax_pct;	/* max % of fs for inode space */
+	uint8_t		sb_blocklog;	/* log2 of sb_blocksize */
+	uint8_t		sb_sectlog;	/* log2 of sb_sectsize */
+	uint8_t		sb_inodelog;	/* log2 of sb_inodesize */
+	uint8_t		sb_inopblog;	/* log2 of sb_inopblock */
+	uint8_t		sb_agblklog;	/* log2 of sb_agblocks (rounded up) */
+	uint8_t		sb_rextslog;	/* log2 of sb_rextents */
+	uint8_t		sb_inprogress;	/* mkfs is in progress, don't mount */
+	uint8_t		sb_imax_pct;	/* max % of fs for inode space */
 					/* statistics */
 	/*
 	 * These fields must remain contiguous.  If you really
 	 * want to change their layout, make sure you fix the
 	 * code in xfs_trans_apply_sb_deltas().
 	 */
-	__uint64_t	sb_icount;	/* allocated inodes */
-	__uint64_t	sb_ifree;	/* free inodes */
-	__uint64_t	sb_fdblocks;	/* free data blocks */
-	__uint64_t	sb_frextents;	/* free realtime extents */
+	uint64_t	sb_icount;	/* allocated inodes */
+	uint64_t	sb_ifree;	/* free inodes */
+	uint64_t	sb_fdblocks;	/* free data blocks */
+	uint64_t	sb_frextents;	/* free realtime extents */
 	/*
 	 * End contiguous fields.
 	 */
 	xfs_ino_t	sb_uquotino;	/* user quota inode */
 	xfs_ino_t	sb_gquotino;	/* group quota inode */
-	__uint16_t	sb_qflags;	/* quota flags */
-	__uint8_t	sb_flags;	/* misc. flags */
-	__uint8_t	sb_shared_vn;	/* shared version number */
+	uint16_t	sb_qflags;	/* quota flags */
+	uint8_t		sb_flags;	/* misc. flags */
+	uint8_t		sb_shared_vn;	/* shared version number */
 	xfs_extlen_t	sb_inoalignmt;	/* inode chunk alignment, fsblocks */
-	__uint32_t	sb_unit;	/* stripe or raid unit */
-	__uint32_t	sb_width;	/* stripe or raid width */
-	__uint8_t	sb_dirblklog;	/* log2 of dir block size (fsbs) */
-	__uint8_t	sb_logsectlog;	/* log2 of the log sector size */
-	__uint16_t	sb_logsectsize;	/* sector size for the log, bytes */
-	__uint32_t	sb_logsunit;	/* stripe unit size for the log */
-	__uint32_t	sb_features2;	/* additional feature bits */
+	uint32_t	sb_unit;	/* stripe or raid unit */
+	uint32_t	sb_width;	/* stripe or raid width */
+	uint8_t		sb_dirblklog;	/* log2 of dir block size (fsbs) */
+	uint8_t		sb_logsectlog;	/* log2 of the log sector size */
+	uint16_t	sb_logsectsize;	/* sector size for the log, bytes */
+	uint32_t	sb_logsunit;	/* stripe unit size for the log */
+	uint32_t	sb_features2;	/* additional feature bits */
 
 	/*
 	 * bad features2 field as a result of failing to pad the sb structure to
···
 	 * the value in sb_features2 when formatting the incore superblock to
 	 * the disk buffer.
 	 */
-	__uint32_t	sb_bad_features2;
+	uint32_t	sb_bad_features2;
 
 	/* version 5 superblock fields start here */
 
 	/* feature masks */
-	__uint32_t	sb_features_compat;
-	__uint32_t	sb_features_ro_compat;
-	__uint32_t	sb_features_incompat;
-	__uint32_t	sb_features_log_incompat;
+	uint32_t	sb_features_compat;
+	uint32_t	sb_features_ro_compat;
+	uint32_t	sb_features_incompat;
+	uint32_t	sb_features_log_incompat;
 
-	__uint32_t	sb_crc;		/* superblock crc */
+	uint32_t	sb_crc;		/* superblock crc */
 	xfs_extlen_t	sb_spino_align;	/* sparse inode chunk alignment */
 
 	xfs_ino_t	sb_pquotino;	/* project quota inode */
···
 static inline bool
 xfs_sb_has_compat_feature(
 	struct xfs_sb	*sbp,
-	__uint32_t	feature)
+	uint32_t	feature)
 {
 	return (sbp->sb_features_compat & feature) != 0;
 }
···
 static inline bool
 xfs_sb_has_ro_compat_feature(
 	struct xfs_sb	*sbp,
-	__uint32_t	feature)
+	uint32_t	feature)
 {
 	return (sbp->sb_features_ro_compat & feature) != 0;
 }
···
 static inline bool
 xfs_sb_has_incompat_feature(
 	struct xfs_sb	*sbp,
-	__uint32_t	feature)
+	uint32_t	feature)
 {
 	return (sbp->sb_features_incompat & feature) != 0;
 }
···
 static inline bool
 xfs_sb_has_incompat_log_feature(
 	struct xfs_sb	*sbp,
-	__uint32_t	feature)
+	uint32_t	feature)
 {
 	return (sbp->sb_features_log_incompat & feature) != 0;
 }
···
  */
 #define XFS_FSB_TO_B(mp,fsbno)	((xfs_fsize_t)(fsbno) << (mp)->m_sb.sb_blocklog)
 #define XFS_B_TO_FSB(mp,b)	\
-	((((__uint64_t)(b)) + (mp)->m_blockmask) >> (mp)->m_sb.sb_blocklog)
-#define XFS_B_TO_FSBT(mp,b)	(((__uint64_t)(b)) >> (mp)->m_sb.sb_blocklog)
+	((((uint64_t)(b)) + (mp)->m_blockmask) >> (mp)->m_sb.sb_blocklog)
+#define XFS_B_TO_FSBT(mp,b)	(((uint64_t)(b)) >> (mp)->m_sb.sb_blocklog)
 #define XFS_B_FSB_OFFSET(mp,b)	((b) & (mp)->m_blockmask)
 
 /*
···
  * next agno_log bits - ag number
  * high agno_log-agblklog-inopblog bits - 0
  */
-#define	XFS_INO_MASK(k)			(__uint32_t)((1ULL << (k)) - 1)
+#define	XFS_INO_MASK(k)			(uint32_t)((1ULL << (k)) - 1)
 #define	XFS_INO_OFFSET_BITS(mp)		(mp)->m_sb.sb_inopblog
 #define	XFS_INO_AGBNO_BITS(mp)		(mp)->m_sb.sb_agblklog
 #define	XFS_INO_AGINO_BITS(mp)		(mp)->m_agino_log
···
 
 #define XFS_SYMLINK_CRC_OFF	offsetof(struct xfs_dsymlink_hdr, sl_crc)
 
+#define XFS_SYMLINK_MAXLEN	1024
 /*
  * The maximum pathlen is 1024 bytes. Since the minimum file system
  * blocksize is 512 bytes, we can get a max of 3 extents back from
···
 #define	XFS_FIBT_MAGIC		0x46494254	/* 'FIBT' */
 #define	XFS_FIBT_CRC_MAGIC	0x46494233	/* 'FIB3' */
 
-typedef	__uint64_t	xfs_inofree_t;
+typedef uint64_t	xfs_inofree_t;
 #define	XFS_INODES_PER_CHUNK		(NBBY * sizeof(xfs_inofree_t))
 #define	XFS_INODES_PER_CHUNK_LOG	(XFS_NBBYLOG + 3)
 #define	XFS_INOBT_ALL_FREE		((xfs_inofree_t)-1)
 #define	XFS_INOBT_MASK(i)		((xfs_inofree_t)1 << (i))
 
 #define XFS_INOBT_HOLEMASK_FULL		0	/* holemask for full chunk */
-#define XFS_INOBT_HOLEMASK_BITS		(NBBY * sizeof(__uint16_t))
+#define XFS_INOBT_HOLEMASK_BITS		(NBBY * sizeof(uint16_t))
 #define XFS_INODES_PER_HOLEMASK_BIT	\
-	(XFS_INODES_PER_CHUNK / (NBBY * sizeof(__uint16_t)))
+	(XFS_INODES_PER_CHUNK / (NBBY * sizeof(uint16_t)))
 
 static inline xfs_inofree_t xfs_inobt_maskn(int i, int n)
 {
···
 
 typedef struct xfs_inobt_rec_incore {
 	xfs_agino_t	ir_startino;	/* starting inode number */
-	__uint16_t	ir_holemask;	/* hole mask for sparse chunks */
-	__uint8_t	ir_count;	/* total inode count */
-	__uint8_t	ir_freecount;	/* count of free inodes (set bits) */
+	uint16_t	ir_holemask;	/* hole mask for sparse chunks */
+	uint8_t		ir_count;	/* total inode count */
+	uint8_t		ir_freecount;	/* count of free inodes (set bits) */
 	xfs_inofree_t	ir_free;	/* free inode mask */
 } xfs_inobt_rec_incore_t;
 
···
  *  rm_offset:54-60 aren't used and should be zero
  *  rm_offset:0-53 is the block offset within the inode
  */
-#define XFS_RMAP_OFF_ATTR_FORK	((__uint64_t)1ULL << 63)
-#define XFS_RMAP_OFF_BMBT_BLOCK	((__uint64_t)1ULL << 62)
-#define XFS_RMAP_OFF_UNWRITTEN	((__uint64_t)1ULL << 61)
+#define XFS_RMAP_OFF_ATTR_FORK	((uint64_t)1ULL << 63)
+#define XFS_RMAP_OFF_BMBT_BLOCK	((uint64_t)1ULL << 62)
+#define XFS_RMAP_OFF_UNWRITTEN	((uint64_t)1ULL << 61)
 
-#define XFS_RMAP_LEN_MAX	((__uint32_t)~0U)
+#define XFS_RMAP_LEN_MAX	((uint32_t)~0U)
 #define XFS_RMAP_OFF_FLAGS	(XFS_RMAP_OFF_ATTR_FORK | \
 				 XFS_RMAP_OFF_BMBT_BLOCK | \
 				 XFS_RMAP_OFF_UNWRITTEN)
-#define XFS_RMAP_OFF_MASK	((__uint64_t)0x3FFFFFFFFFFFFFULL)
+#define XFS_RMAP_OFF_MASK	((uint64_t)0x3FFFFFFFFFFFFFULL)
 
 #define XFS_RMAP_OFF(off)		((off) & XFS_RMAP_OFF_MASK)
 
···
 struct xfs_rmap_irec {
 	xfs_agblock_t	rm_startblock;	/* extent start block */
 	xfs_extlen_t	rm_blockcount;	/* extent length */
-	__uint64_t	rm_owner;	/* extent owner */
-	__uint64_t	rm_offset;	/* offset within the owner */
+	uint64_t	rm_owner;	/* extent owner */
+	uint64_t	rm_offset;	/* offset within the owner */
 	unsigned int	rm_flags;	/* state flags */
 };
 
···
 	__be64			l0, l1;
 } xfs_bmbt_rec_t;
 
-typedef __uint64_t	xfs_bmbt_rec_base_t;	/* use this for casts */
+typedef uint64_t	xfs_bmbt_rec_base_t;	/* use this for casts */
 typedef xfs_bmbt_rec_t xfs_bmdr_rec_t;
 
 typedef struct xfs_bmbt_rec_host {
-	__uint64_t		l0, l1;
+	uint64_t		l0, l1;
 } xfs_bmbt_rec_host_t;
 
 /*

fs/xfs/libxfs/xfs_fs.h

···
  * and using two 16bit values to hold new 32bit projid was choosen
  * to retain compatibility with "old" filesystems).
  */
-static inline __uint32_t
+static inline uint32_t
 bstat_get_projid(struct xfs_bstat *bs)
 {
-	return (__uint32_t)bs->bs_projid_hi << 16 | bs->bs_projid_lo;
+	return (uint32_t)bs->bs_projid_hi << 16 | bs->bs_projid_lo;
 }
 
 /*
···
 } xfs_handle_t;
 #define ha_fsid ha_u._ha_fsid
 
-#define XFS_HSIZE(handle)	(((char *) &(handle).ha_fid.fid_pad	 \
-				 - (char *) &(handle))			  \
-				 + (handle).ha_fid.fid_len)
-
 /*
  * Structure passed to XFS_IOC_SWAPEXT
  */
 typedef struct xfs_swapext
 {
-	__int64_t	sx_version;	/* version */
+	int64_t		sx_version;	/* version */
 #define XFS_SX_VERSION		0
-	__int64_t	sx_fdtarget;	/* fd of target file */
-	__int64_t	sx_fdtmp;	/* fd of tmp file */
+	int64_t		sx_fdtarget;	/* fd of target file */
+	int64_t		sx_fdtmp;	/* fd of tmp file */
 	xfs_off_t	sx_offset;	/* offset into file */
 	xfs_off_t	sx_length;	/* leng from offset */
 	char		sx_pad[16];	/* pad space, unused */
···
 #define XFS_IOC_ATTRLIST_BY_HANDLE   _IOW ('X', 122, struct xfs_fsop_attrlist_handlereq)
 #define XFS_IOC_ATTRMULTI_BY_HANDLE  _IOW ('X', 123, struct xfs_fsop_attrmulti_handlereq)
 #define XFS_IOC_FSGEOMETRY	     _IOR ('X', 124, struct xfs_fsop_geom)
-#define XFS_IOC_GOINGDOWN	     _IOR ('X', 125, __uint32_t)
+#define XFS_IOC_GOINGDOWN	     _IOR ('X', 125, uint32_t)
 /*	XFS_IOC_GETFSUUID ---------- deprecated 140	 */
 
 

fs/xfs/libxfs/xfs_ialloc.c

···
 /*
  * Allocation group level functions.
  */
-static inline int
+int
 xfs_ialloc_cluster_alignment(
 	struct xfs_mount	*mp)
 {
···
 	return xfs_btree_update(cur, &rec);
 }
 
-/*
- * Get the data from the pointed-to record.
- */
-int					/* error */
-xfs_inobt_get_rec(
-	struct xfs_btree_cur	*cur,	/* btree cursor */
-	xfs_inobt_rec_incore_t	*irec,	/* btree record */
-	int			*stat)	/* output: success/failure */
+/* Convert on-disk btree record to incore inobt record. */
+void
+xfs_inobt_btrec_to_irec(
+	struct xfs_mount		*mp,
+	union xfs_btree_rec		*rec,
+	struct xfs_inobt_rec_incore	*irec)
 {
-	union xfs_btree_rec	*rec;
-	int			error;
-
-	error = xfs_btree_get_rec(cur, &rec, stat);
-	if (error || *stat == 0)
-		return error;
-
 	irec->ir_startino = be32_to_cpu(rec->inobt.ir_startino);
-	if (xfs_sb_version_hassparseinodes(&cur->bc_mp->m_sb)) {
+	if (xfs_sb_version_hassparseinodes(&mp->m_sb)) {
 		irec->ir_holemask = be16_to_cpu(rec->inobt.ir_u.sp.ir_holemask);
 		irec->ir_count = rec->inobt.ir_u.sp.ir_count;
 		irec->ir_freecount = rec->inobt.ir_u.sp.ir_freecount;
···
 				be32_to_cpu(rec->inobt.ir_u.f.ir_freecount);
 	}
 	irec->ir_free = be64_to_cpu(rec->inobt.ir_free);
+}
+
+/*
+ * Get the data from the pointed-to record.
+ */
+int
+xfs_inobt_get_rec(
+	struct xfs_btree_cur		*cur,
+	struct xfs_inobt_rec_incore	*irec,
+	int				*stat)
+{
+	union xfs_btree_rec		*rec;
+	int				error;
+
+	error = xfs_btree_get_rec(cur, &rec, stat);
+	if (error || *stat == 0)
+		return error;
+
+	xfs_inobt_btrec_to_irec(cur->bc_mp, rec, irec);
 
 	return 0;
 }
···
 STATIC int
 xfs_inobt_insert_rec(
 	struct xfs_btree_cur	*cur,
-	__uint16_t		holemask,
-	__uint8_t		count,
-	__int32_t		freecount,
+	uint16_t		holemask,
+	uint8_t			count,
+	int32_t			freecount,
 	xfs_inofree_t		free,
 	int			*stat)
 {
···
 	    !xfs_buf_verify_cksum(bp, XFS_AGI_CRC_OFF))
 		xfs_buf_ioerror(bp, -EFSBADCRC);
 	else if (XFS_TEST_ERROR(!xfs_agi_verify(bp), mp,
-				XFS_ERRTAG_IALLOC_READ_AGI,
-				XFS_RANDOM_IALLOC_READ_AGI))
+				XFS_ERRTAG_IALLOC_READ_AGI))
 		xfs_buf_ioerror(bp, -EFSCORRUPTED);
 
 	if (bp->b_error)

fs/xfs/libxfs/xfs_ialloc.h

···
 int xfs_read_agi(struct xfs_mount *mp, struct xfs_trans *tp,
 		xfs_agnumber_t agno, struct xfs_buf **bpp);
 
+union xfs_btree_rec;
+void xfs_inobt_btrec_to_irec(struct xfs_mount *mp, union xfs_btree_rec *rec,
+		struct xfs_inobt_rec_incore *irec);
+
+int xfs_ialloc_cluster_alignment(struct xfs_mount *mp);
 
 #endif	/* __XFS_IALLOC_H__ */

fs/xfs/libxfs/xfs_ialloc_btree.c

···
 }
 
 STATIC void
+xfs_inobt_init_high_key_from_rec(
+	union xfs_btree_key	*key,
+	union xfs_btree_rec	*rec)
+{
+	__u32			x;
+
+	x = be32_to_cpu(rec->inobt.ir_startino);
+	x += XFS_INODES_PER_CHUNK - 1;
+	key->inobt.ir_startino = cpu_to_be32(x);
+}
+
+STATIC void
 xfs_inobt_init_rec_from_cur(
 	struct xfs_btree_cur	*cur,
 	union xfs_btree_rec	*rec)
···
 	ptr->s = agi->agi_free_root;
 }
 
-STATIC __int64_t
+STATIC int64_t
 xfs_inobt_key_diff(
 	struct xfs_btree_cur	*cur,
 	union xfs_btree_key	*key)
 {
-	return (__int64_t)be32_to_cpu(key->inobt.ir_startino) -
+	return (int64_t)be32_to_cpu(key->inobt.ir_startino) -
 			  cur->bc_rec.i.ir_startino;
+}
+
+STATIC int64_t
+xfs_inobt_diff_two_keys(
+	struct xfs_btree_cur	*cur,
+	union xfs_btree_key	*k1,
+	union xfs_btree_key	*k2)
+{
+	return (int64_t)be32_to_cpu(k1->inobt.ir_startino) -
+			  be32_to_cpu(k2->inobt.ir_startino);
 }
 
 static int
···
 	.verify_write = xfs_inobt_write_verify,
 };
 
-#if defined(DEBUG) || defined(XFS_WARN)
 STATIC int
 xfs_inobt_keys_inorder(
 	struct xfs_btree_cur	*cur,
···
 	return be32_to_cpu(r1->inobt.ir_startino) + XFS_INODES_PER_CHUNK <=
 		be32_to_cpu(r2->inobt.ir_startino);
 }
-#endif	/* DEBUG */
 
 static const struct xfs_btree_ops xfs_inobt_ops = {
 	.rec_len		= sizeof(xfs_inobt_rec_t),
···
 	.get_minrecs		= xfs_inobt_get_minrecs,
 	.get_maxrecs		= xfs_inobt_get_maxrecs,
 	.init_key_from_rec	= xfs_inobt_init_key_from_rec,
+	.init_high_key_from_rec	= xfs_inobt_init_high_key_from_rec,
 	.init_rec_from_cur	= xfs_inobt_init_rec_from_cur,
 	.init_ptr_from_cur	= xfs_inobt_init_ptr_from_cur,
 	.key_diff		= xfs_inobt_key_diff,
 	.buf_ops		= &xfs_inobt_buf_ops,
-#if defined(DEBUG) || defined(XFS_WARN)
+	.diff_two_keys		= xfs_inobt_diff_two_keys,
 	.keys_inorder		= xfs_inobt_keys_inorder,
 	.recs_inorder		= xfs_inobt_recs_inorder,
-#endif
 };
 
 static const struct xfs_btree_ops xfs_finobt_ops = {
···
 	.get_minrecs		= xfs_inobt_get_minrecs,
 	.get_maxrecs		= xfs_inobt_get_maxrecs,
 	.init_key_from_rec	= xfs_inobt_init_key_from_rec,
+	.init_high_key_from_rec	= xfs_inobt_init_high_key_from_rec,
 	.init_rec_from_cur	= xfs_inobt_init_rec_from_cur,
 	.init_ptr_from_cur	= xfs_finobt_init_ptr_from_cur,
 	.key_diff		= xfs_inobt_key_diff,
 	.buf_ops		= &xfs_inobt_buf_ops,
-#if defined(DEBUG) || defined(XFS_WARN)
+	.diff_two_keys		= xfs_inobt_diff_two_keys,
 	.keys_inorder		= xfs_inobt_keys_inorder,
 	.recs_inorder		= xfs_inobt_recs_inorder,
-#endif
 };
 
 /*

fs/xfs/libxfs/xfs_inode_buf.c

···
 		di_ok = dip->di_magic == cpu_to_be16(XFS_DINODE_MAGIC) &&
 			xfs_dinode_good_version(mp, dip->di_version);
 		if (unlikely(XFS_TEST_ERROR(!di_ok, mp,
-						XFS_ERRTAG_ITOBP_INOTOBP,
-						XFS_RANDOM_ITOBP_INOTOBP))) {
+						XFS_ERRTAG_ITOBP_INOTOBP))) {
 			if (readahead) {
 				bp->b_flags &= ~XBF_DONE;
 				xfs_buf_ioerror(bp, -EIO);
···
 	}
 }
 
-static bool
+bool
 xfs_dinode_verify(
 	struct xfs_mount	*mp,
 	xfs_ino_t		ino,
···
 	struct xfs_mount	*mp,
 	struct xfs_dinode	*dip)
 {
-	__uint32_t		crc;
+	uint32_t		crc;
 
 	if (dip->di_version < 3)
 		return;

fs/xfs/libxfs/xfs_inode_buf.h

···
  * format specific structures at the appropriate time.
  */
 struct xfs_icdinode {
-	__int8_t	di_version;	/* inode version */
-	__int8_t	di_format;	/* format of di_c data */
-	__uint16_t	di_flushiter;	/* incremented on flush */
-	__uint32_t	di_uid;		/* owner's user id */
-	__uint32_t	di_gid;		/* owner's group id */
-	__uint16_t	di_projid_lo;	/* lower part of owner's project id */
-	__uint16_t	di_projid_hi;	/* higher part of owner's project id */
+	int8_t		di_version;	/* inode version */
+	int8_t		di_format;	/* format of di_c data */
+	uint16_t	di_flushiter;	/* incremented on flush */
+	uint32_t	di_uid;		/* owner's user id */
+	uint32_t	di_gid;		/* owner's group id */
+	uint16_t	di_projid_lo;	/* lower part of owner's project id */
+	uint16_t	di_projid_hi;	/* higher part of owner's project id */
 	xfs_fsize_t	di_size;	/* number of bytes in file */
 	xfs_rfsblock_t	di_nblocks;	/* # of direct & btree blocks used */
 	xfs_extlen_t	di_extsize;	/* basic/minimum extent size for file */
 	xfs_extnum_t	di_nextents;	/* number of extents in data fork */
 	xfs_aextnum_t	di_anextents;	/* number of extents in attribute fork*/
-	__uint8_t	di_forkoff;	/* attr fork offs, <<3 for 64b align */
-	__int8_t	di_aformat;	/* format of attr fork's data */
-	__uint32_t	di_dmevmask;	/* DMIG event mask */
-	__uint16_t	di_dmstate;	/* DMIG state info */
-	__uint16_t	di_flags;	/* random flags, XFS_DIFLAG_... */
+	uint8_t		di_forkoff;	/* attr fork offs, <<3 for 64b align */
+	int8_t		di_aformat;	/* format of attr fork's data */
+	uint32_t	di_dmevmask;	/* DMIG event mask */
+	uint16_t	di_dmstate;	/* DMIG state info */
+	uint16_t	di_flags;	/* random flags, XFS_DIFLAG_... */
 
-	__uint64_t	di_flags2;	/* more random flags */
-	__uint32_t	di_cowextsize;	/* basic cow extent size for file */
+	uint64_t	di_flags2;	/* more random flags */
+	uint32_t	di_cowextsize;	/* basic cow extent size for file */
 
 	xfs_ictimestamp_t di_crtime;	/* time created */
 };
···
 #else
 #define	xfs_inobp_check(mp, bp)
 #endif /* DEBUG */
+
+bool	xfs_dinode_verify(struct xfs_mount *mp, xfs_ino_t ino,
+			  struct xfs_dinode *dip);
 
 #endif	/* __XFS_INODE_BUF_H__ */

fs/xfs/libxfs/xfs_log_format.h

···
  * through all the log items definitions and everything they encode into the
  * log.
  */
-typedef __uint32_t xlog_tid_t;
+typedef uint32_t xlog_tid_t;
 
 #define XLOG_MIN_ICLOGS		2
 #define XLOG_MAX_ICLOGS		8
···
 typedef struct xfs_trans_header {
 	uint		th_magic;		/* magic number */
 	uint		th_type;		/* transaction type */
-	__int32_t	th_tid;			/* transaction id (unused) */
+	int32_t		th_tid;			/* transaction id (unused) */
 	uint		th_num_items;		/* num items logged by trans */
 } xfs_trans_header_t;
 
···
  * must be added on to the end.
  */
 typedef struct xfs_inode_log_format {
-	__uint16_t		ilf_type;	/* inode log item type */
-	__uint16_t		ilf_size;	/* size of this item */
-	__uint32_t		ilf_fields;	/* flags for fields logged */
-	__uint16_t		ilf_asize;	/* size of attr d/ext/root */
-	__uint16_t		ilf_dsize;	/* size of data/ext/root */
-	__uint64_t		ilf_ino;	/* inode number */
+	uint16_t		ilf_type;	/* inode log item type */
+	uint16_t		ilf_size;	/* size of this item */
+	uint32_t		ilf_fields;	/* flags for fields logged */
+	uint16_t		ilf_asize;	/* size of attr d/ext/root */
+	uint16_t		ilf_dsize;	/* size of data/ext/root */
+	uint64_t		ilf_ino;	/* inode number */
 	union {
-		__uint32_t	ilfu_rdev;	/* rdev value for dev inode*/
+		uint32_t	ilfu_rdev;	/* rdev value for dev inode*/
 		uuid_t		ilfu_uuid;	/* mount point value */
 	} ilf_u;
-	__int64_t		ilf_blkno;	/* blkno of inode buffer */
-	__int32_t		ilf_len;	/* len of inode buffer */
-	__int32_t		ilf_boffset;	/* off of inode in buffer */
+	int64_t			ilf_blkno;	/* blkno of inode buffer */
+	int32_t			ilf_len;	/* len of inode buffer */
+	int32_t			ilf_boffset;	/* off of inode in buffer */
 } xfs_inode_log_format_t;
 
 typedef struct xfs_inode_log_format_32 {
-	__uint16_t		ilf_type;	/* inode log item type */
-	__uint16_t		ilf_size;	/* size of this item */
-	__uint32_t		ilf_fields;	/* flags for fields logged */
-	__uint16_t		ilf_asize;	/* size of attr d/ext/root */
-	__uint16_t		ilf_dsize;	/* size of data/ext/root */
-	__uint64_t		ilf_ino;	/* inode number */
+	uint16_t		ilf_type;	/* inode log item type */
+	uint16_t		ilf_size;	/* size of this item */
+	uint32_t		ilf_fields;	/* flags for fields logged */
+	uint16_t		ilf_asize;	/* size of attr d/ext/root */
+	uint16_t		ilf_dsize;	/* size of data/ext/root */
+	uint64_t		ilf_ino;	/* inode number */
 	union {
-		__uint32_t	ilfu_rdev;	/* rdev value for dev inode*/
+		uint32_t	ilfu_rdev;	/* rdev value for dev inode*/
 		uuid_t		ilfu_uuid;	/* mount point value */
 	} ilf_u;
-	__int64_t		ilf_blkno;	/* blkno of inode buffer */
-	__int32_t		ilf_len;	/* len of inode buffer */
-	__int32_t		ilf_boffset;	/* off of inode in buffer */
+	int64_t			ilf_blkno;	/* blkno of inode buffer */
+	int32_t			ilf_len;	/* len of inode buffer */
+	int32_t			ilf_boffset;	/* off of inode in buffer */
 } __attribute__((packed)) xfs_inode_log_format_32_t;
 
 typedef struct xfs_inode_log_format_64 {
-	__uint16_t		ilf_type;	/* inode log item type */
-	__uint16_t		ilf_size;	/* size of this item */
-	__uint32_t		ilf_fields;	/* flags for fields logged */
-	__uint16_t		ilf_asize;	/* size of attr d/ext/root */
-	__uint16_t		ilf_dsize;	/* size of data/ext/root */
-	__uint32_t		ilf_pad;	/* pad for 64 bit boundary */
-	__uint64_t		ilf_ino;	/* inode number */
+	uint16_t		ilf_type;	/* inode log item type */
+	uint16_t		ilf_size;	/* size of this item */
+	uint32_t		ilf_fields;	/* flags for fields logged */
+	uint16_t		ilf_asize;	/* size of attr d/ext/root */
+	uint16_t		ilf_dsize;	/* size of data/ext/root */
+	uint32_t		ilf_pad;	/* pad for 64 bit boundary */
+	uint64_t		ilf_ino;	/* inode number */
 	union {
-		__uint32_t	ilfu_rdev;	/* rdev value for dev inode*/
+		uint32_t	ilfu_rdev;	/* rdev value for dev inode*/
 		uuid_t		ilfu_uuid;	/* mount point value */
 	} ilf_u;
-	__int64_t		ilf_blkno;	/* blkno of inode buffer */
-	__int32_t		ilf_len;	/* len of inode buffer */
-	__int32_t		ilf_boffset;	/* off of inode in buffer */
+	int64_t			ilf_blkno;	/* blkno of inode buffer */
+	int32_t			ilf_len;	/* len of inode buffer */
+	int32_t			ilf_boffset;	/* off of inode in buffer */
 } xfs_inode_log_format_64_t;
 
 
···
  * information.
  */
 typedef struct xfs_ictimestamp {
-	__int32_t	t_sec;		/* timestamp seconds */
-	__int32_t	t_nsec;		/* timestamp nanoseconds */
+	int32_t		t_sec;		/* timestamp seconds */
+	int32_t		t_nsec;		/* timestamp nanoseconds */
 } xfs_ictimestamp_t;
 
 /*
···
  * kept identical to struct xfs_dinode except for the endianness annotations.
  */
 struct xfs_log_dinode {
-	__uint16_t	di_magic;	/* inode magic # = XFS_DINODE_MAGIC */
-	__uint16_t	di_mode;	/* mode and type of file */
-	__int8_t	di_version;	/* inode version */
-	__int8_t	di_format;	/* format of di_c data */
-	__uint8_t	di_pad3[2];	/* unused in v2/3 inodes */
-	__uint32_t	di_uid;		/* owner's user id */
-	__uint32_t	di_gid;		/* owner's group id */
-	__uint32_t	di_nlink;	/* number of links to file */
-	__uint16_t	di_projid_lo;	/* lower part of owner's project id */
-	__uint16_t	di_projid_hi;	/* higher part of owner's project id */
-	__uint8_t	di_pad[6];	/* unused, zeroed space */
-	__uint16_t	di_flushiter;	/* incremented on flush */
+	uint16_t	di_magic;	/* inode magic # = XFS_DINODE_MAGIC */
+	uint16_t	di_mode;	/* mode and type of file */
+	int8_t		di_version;	/* inode version */
+	int8_t		di_format;	/* format of di_c data */
+	uint8_t		di_pad3[2];	/* unused in v2/3 inodes */
+	uint32_t	di_uid;		/* owner's user id */
+	uint32_t	di_gid;		/* owner's group id */
+	uint32_t	di_nlink;	/* number of links to file */
+	uint16_t	di_projid_lo;	/* lower part of owner's project id */
+	uint16_t	di_projid_hi;	/* higher part of owner's project id */
+	uint8_t		di_pad[6];	/* unused, zeroed space */
+	uint16_t	di_flushiter;	/* incremented on flush */
 	xfs_ictimestamp_t di_atime;	/* time last accessed */
 	xfs_ictimestamp_t di_mtime;	/* time last modified */
 	xfs_ictimestamp_t di_ctime;	/* time created/inode modified */
···
 	xfs_extlen_t	di_extsize;	/* basic/minimum extent size for file */
 	xfs_extnum_t	di_nextents;	/* number of extents in data fork */
 	xfs_aextnum_t	di_anextents;	/* number of extents in attribute fork*/
-	__uint8_t	di_forkoff;	/* attr fork offs, <<3 for 64b align */
-	__int8_t	di_aformat;	/* format of attr fork's data */
-	__uint32_t	di_dmevmask;	/* DMIG event mask */
-	__uint16_t	di_dmstate;	/* DMIG state info */
-	__uint16_t	di_flags;	/* random flags, XFS_DIFLAG_... */
-	__uint32_t	di_gen;		/* generation number */
+	uint8_t		di_forkoff;	/* attr fork offs, <<3 for 64b align */
+	int8_t		di_aformat;	/* format of attr fork's data */
+	uint32_t	di_dmevmask;	/* DMIG event mask */
+	uint16_t	di_dmstate;	/* DMIG state info */
+	uint16_t	di_flags;	/* random flags, XFS_DIFLAG_... */
+	uint32_t	di_gen;		/* generation number */
 
 	/* di_next_unlinked is the only non-core field in the old dinode */
 	xfs_agino_t	di_next_unlinked;/* agi unlinked list ptr */
 
 	/* start of the extended dinode, writable fields */
-	__uint32_t	di_crc;		/* CRC of the inode */
-	__uint64_t	di_changecount;	/* number of attribute changes */
+	uint32_t	di_crc;		/* CRC of the inode */
+	uint64_t	di_changecount;	/* number of attribute changes */
 	xfs_lsn_t	di_lsn;		/* flush sequence */
-	__uint64_t	di_flags2;	/* more random flags */
-	__uint32_t	di_cowextsize;	/* basic cow extent size for file */
-	__uint8_t	di_pad2[12];	/* more padding for future expansion */
+	uint64_t	di_flags2;	/* more random flags */
+	uint32_t	di_cowextsize;	/* basic cow extent size for file */
+	uint8_t		di_pad2[12];	/* more padding for future expansion */
 
 	/* fields only written to during inode creation */
 	xfs_ictimestamp_t di_crtime;	/* time created */
···
 	unsigned short	blf_size;	/* size of this item */
 	unsigned short	blf_flags;	/* misc state */
 	unsigned short	blf_len;	/* number of blocks in this buf */
-	__int64_t	blf_blkno;	/* starting blkno of this buf */
+	int64_t		blf_blkno;	/* starting blkno of this buf */
 	unsigned int	blf_map_size;	/* used size of data bitmap in words */
 	unsigned int	blf_data_map[XFS_BLF_DATAMAP_SIZE]; /* dirty bitmap */
 } xfs_buf_log_format_t;
···
 	blf->blf_flags |= ((type << XFS_BLFT_SHIFT) & XFS_BLFT_MASK);
 }
 
-static inline __uint16_t
+static inline uint16_t
 xfs_blft_from_flags(struct xfs_buf_log_format *blf)
 {
 	return (blf->blf_flags & XFS_BLFT_MASK) >> XFS_BLFT_SHIFT;
···
  * conversion routine.
  */
 typedef struct xfs_extent_32 {
-	__uint64_t	ext_start;
-	__uint32_t	ext_len;
+	uint64_t	ext_start;
+	uint32_t	ext_len;
 } __attribute__((packed)) xfs_extent_32_t;
 
 typedef struct xfs_extent_64 {
-	__uint64_t	ext_start;
-	__uint32_t	ext_len;
-	__uint32_t	ext_pad;
+	uint64_t	ext_start;
+	uint32_t	ext_len;
+	uint32_t	ext_pad;
 } xfs_extent_64_t;
 
 /*
···
  * size is given by efi_nextents.
  */
 typedef struct xfs_efi_log_format {
-	__uint16_t		efi_type;	/* efi log item type */
-	__uint16_t		efi_size;	/* size of this item */
-	__uint32_t		efi_nextents;	/* # extents to free */
-	__uint64_t		efi_id;		/* efi identifier */
+	uint16_t		efi_type;	/* efi log item type */
+	uint16_t		efi_size;	/* size of this item */
+	uint32_t		efi_nextents;	/* # extents to free */
+	uint64_t		efi_id;		/* efi identifier */
 	xfs_extent_t		efi_extents[1];	/* array of extents to free */
 } xfs_efi_log_format_t;
 
 typedef struct xfs_efi_log_format_32 {
-	__uint16_t		efi_type;	/* efi log item type */
-	__uint16_t		efi_size;	/* size of this item */
-	__uint32_t		efi_nextents;	/* # extents to free */
-	__uint64_t		efi_id;		/* efi identifier */
+	uint16_t		efi_type;	/* efi log item type */
+	uint16_t		efi_size;	/* size of this item */
+	uint32_t		efi_nextents;	/* # extents to free */
+	uint64_t		efi_id;		/* efi identifier */
 	xfs_extent_32_t		efi_extents[1];	/* array of extents to free */
 } __attribute__((packed)) xfs_efi_log_format_32_t;
 
 typedef struct xfs_efi_log_format_64 {
-	__uint16_t		efi_type;	/* efi log item type */
-	__uint16_t		efi_size;	/* size of this item */
-	__uint32_t		efi_nextents;	/* # extents to free */
-	__uint64_t		efi_id;		/* efi identifier */
+	uint16_t		efi_type;	/* efi log item type */
+	uint16_t		efi_size;	/* size of this item */
+	uint32_t		efi_nextents;	/* # extents to free */
+	uint64_t		efi_id;		/* efi identifier */
 	xfs_extent_64_t		efi_extents[1];	/* array of extents to free */
 } xfs_efi_log_format_64_t;
 
···
  * size is given by efd_nextents;
  */
 typedef struct xfs_efd_log_format {
-	__uint16_t		efd_type;	/* efd log item type */
-	__uint16_t		efd_size;	/* size of this item */
-	__uint32_t		efd_nextents;	/* # of extents freed */
-	__uint64_t		efd_efi_id;	/* id of corresponding efi */
+	uint16_t		efd_type;	/* efd log item type */
+	uint16_t		efd_size;	/* size of this item */
+	uint32_t		efd_nextents;	/* # of extents freed */
+	uint64_t		efd_efi_id;	/* id of corresponding efi */
 	xfs_extent_t		efd_extents[1];	/* array of extents freed */
 } xfs_efd_log_format_t;
 
 typedef struct xfs_efd_log_format_32 {
-	__uint16_t		efd_type;	/* efd log item type */
-	__uint16_t		efd_size;	/* size of this item */
-	__uint32_t		efd_nextents;	/* # of extents freed */
-	__uint64_t		efd_efi_id;	/* id of corresponding efi */
+	uint16_t		efd_type;	/* efd log item type */
+	uint16_t		efd_size;	/* size of this item */
+	uint32_t		efd_nextents;	/* # of extents freed */
+	uint64_t		efd_efi_id;	/* id of corresponding efi */
 	xfs_extent_32_t		efd_extents[1];	/* array of extents freed */
 } __attribute__((packed)) xfs_efd_log_format_32_t;
 
 typedef struct xfs_efd_log_format_64 {
-	__uint16_t		efd_type;	/* efd log item type */
-	__uint16_t		efd_size;	/* size of this item */
-	__uint32_t		efd_nextents;	/* # of extents freed */
-	__uint64_t		efd_efi_id;	/* id of corresponding efi */
+	uint16_t		efd_type;	/* efd log item type */
+	uint16_t		efd_size;	/* size of this item */
+	uint32_t		efd_nextents;	/* # of extents freed */
+	uint64_t		efd_efi_id;	/* id of corresponding efi */
 	xfs_extent_64_t		efd_extents[1];	/* array of extents freed */
 } xfs_efd_log_format_64_t;
 
···
  * RUI/RUD (reverse mapping) log format definitions
  */
 struct xfs_map_extent {
-	__uint64_t		me_owner;
-	__uint64_t		me_startblock;
-	__uint64_t		me_startoff;
-	__uint32_t		me_len;
-	__uint32_t		me_flags;
+	uint64_t		me_owner;
+	uint64_t		me_startblock;
+	uint64_t		me_startoff;
+	uint32_t		me_len;
+	uint32_t		me_flags;
 };
 
 /* rmap me_flags: upper bits are flags, lower byte is type code */
···
  * size is given by rui_nextents.
  */
 struct xfs_rui_log_format {
-	__uint16_t		rui_type;	/* rui log item type */
-	__uint16_t		rui_size;	/* size of this item */
-	__uint32_t		rui_nextents;	/* # extents to free */
-	__uint64_t		rui_id;		/* rui identifier */
+	uint16_t		rui_type;	/* rui log item type */
+	uint16_t		rui_size;	/* size of this item */
+	uint32_t		rui_nextents;	/* # extents to free */
+	uint64_t		rui_id;		/* rui identifier */
 	struct xfs_map_extent	rui_extents[];	/* array of extents to rmap */
 };
 
···
  * size is given by rud_nextents;
  */
 struct xfs_rud_log_format {
-	__uint16_t		rud_type;	/* rud log item type */
-	__uint16_t		rud_size;	/* size of this item */
-	__uint32_t		__pad;
-	__uint64_t		rud_rui_id;	/* id of corresponding rui */
+	uint16_t		rud_type;	/* rud log item type */
+	uint16_t		rud_size;	/* size of this item */
+	uint32_t		__pad;
+	uint64_t		rud_rui_id;	/* id of corresponding rui */
 };
 
 /*
  * CUI/CUD (refcount update) log format definitions
  */
 struct xfs_phys_extent {
-	__uint64_t		pe_startblock;
-	__uint32_t		pe_len;
-	__uint32_t		pe_flags;
+	uint64_t		pe_startblock;
+	uint32_t		pe_len;
+	uint32_t		pe_flags;
 };
 
 /* refcount pe_flags: upper bits are flags, lower byte is type code */
···
  * size is given by cui_nextents.
  */
 struct xfs_cui_log_format {
-	__uint16_t		cui_type;	/* cui log item type */
-	__uint16_t		cui_size;	/* size of this item */
-	__uint32_t		cui_nextents;	/* # extents to free */
-	__uint64_t		cui_id;		/* cui identifier */
+	uint16_t		cui_type;	/* cui log item type */
+	uint16_t		cui_size;	/* size of this item */
+	uint32_t		cui_nextents;	/* # extents to free */
+	uint64_t		cui_id;		/* cui identifier */
 	struct xfs_phys_extent	cui_extents[];	/* array of extents */
 };
 
···
  * size is given by cud_nextents;
  */
 struct xfs_cud_log_format {
-	__uint16_t		cud_type;	/* cud log item type */
-	__uint16_t		cud_size;	/* size of this item */
-	__uint32_t		__pad;
-	__uint64_t		cud_cui_id;	/* id of corresponding cui */
+	uint16_t		cud_type;	/* cud log item type */
+	uint16_t		cud_size;	/* size of this item */
+	uint32_t		__pad;
+	uint64_t		cud_cui_id;	/* id of corresponding cui */
 };
 
 /*
···
  * size is given by bui_nextents.
  */
 struct xfs_bui_log_format {
-	__uint16_t		bui_type;	/* bui log item type */
-	__uint16_t		bui_size;	/* size of this item */
-	__uint32_t		bui_nextents;	/* # extents to free */
-	__uint64_t		bui_id;		/* bui identifier */
+	uint16_t		bui_type;	/* bui log item type */
+	uint16_t		bui_size;	/* size of this item */
+	uint32_t		bui_nextents;	/* # extents to free */
+	uint64_t		bui_id;		/* bui identifier */
 	struct xfs_map_extent	bui_extents[];	/* array of extents to bmap */
 };
 
···
  * size is given by bud_nextents;
  */
 struct xfs_bud_log_format {
-	__uint16_t		bud_type;	/* bud log item type */
-	__uint16_t		bud_size;	/* size of this item */
-	__uint32_t		__pad;
-	__uint64_t		bud_bui_id;	/* id of corresponding bui */
+	uint16_t		bud_type;	/* bud log item type */
+	uint16_t		bud_size;	/* size of this item */
+	uint32_t		__pad;
+	uint64_t		bud_bui_id;	/* id of corresponding bui */
 };
 
 /*
···
  * 32 bits : log_recovery code assumes that.
  */
 typedef struct xfs_dq_logformat {
-	__uint16_t		qlf_type;      /* dquot log item type */
-	__uint16_t		qlf_size;      /* size of this item */
+	uint16_t		qlf_type;      /* dquot log item type */
+	uint16_t		qlf_size;      /* size of this item */
 	xfs_dqid_t		qlf_id;	       /* usr/grp/proj id : 32 bits */
-	__int64_t		qlf_blkno;     /* blkno of dquot buffer */
-	__int32_t		qlf_len;       /* len of dquot buffer */
-	__uint32_t		qlf_boffset;   /* off of dquot in buffer */
+	int64_t			qlf_blkno;     /* blkno of dquot buffer */
+	int32_t			qlf_len;       /* len of dquot buffer */
+	uint32_t		qlf_boffset;   /* off of dquot in buffer */
 } xfs_dq_logformat_t;
 
 /*
···
  * decoding can be done correctly.
  */
 struct xfs_icreate_log {
-	__uint16_t	icl_type;	/* type of log format structure */
-	__uint16_t	icl_size;	/* size of log format structure */
+	uint16_t	icl_type;	/* type of log format structure */
+	uint16_t	icl_size;	/* size of log format structure */
 	__be32		icl_ag;		/* ag being allocated in */
 	__be32		icl_agbno;	/* start block of inode range */
 	__be32		icl_count;	/* number of inodes to initialise */

fs/xfs/libxfs/xfs_log_recover.h

···
 #define XLOG_RHASH_SIZE	16
 #define XLOG_RHASH_SHIFT 2
 #define XLOG_RHASH(tid)	\
-	((((__uint32_t)tid)>>XLOG_RHASH_SHIFT) & (XLOG_RHASH_SIZE-1))
+	((((uint32_t)tid)>>XLOG_RHASH_SHIFT) & (XLOG_RHASH_SIZE-1))
 
 #define XLOG_MAX_REGIONS_IN_ITEM   (XFS_MAX_BLOCKSIZE / XFS_BLF_CHUNK / 2 + 1)
 

fs/xfs/libxfs/xfs_quota_defs.h

···
  * they may need 64-bit accounting. Hence, 64-bit quota-counters,
  * and quota-limits. This is a waste in the common case, but hey ...
  */
-typedef __uint64_t	xfs_qcnt_t;
-typedef __uint16_t	xfs_qwarncnt_t;
+typedef uint64_t	xfs_qcnt_t;
+typedef uint16_t	xfs_qwarncnt_t;
 
 /*
  * flags for q_flags field in the dquot.
···
  * flags for dqalloc.
  */
 #define XFS_QMOPT_INHERIT	0x1000000
+
+#define XFS_QMOPT_NOLOCK	0x2000000 /* don't ilock during dqget */
 
 /*
  * flags to xfs_trans_mod_dquot.

fs/xfs/libxfs/xfs_refcount.c

···
 }
 
 /*
- * While we're adjusting the refcounts records of an extent, we have
- * to keep an eye on the number of extents we're dirtying -- run too
- * many in a single transaction and we'll exceed the transaction's
- * reservation and crash the fs.  Each record adds 12 bytes to the
- * log (plus any key updates) so we'll conservatively assume 24 bytes
- * per record.  We must also leave space for btree splits on both ends
- * of the range and space for the CUD and a new CUI.
- *
  * XXX: This is a pretty hand-wavy estimate.  The penalty for guessing
  * true incorrectly is a shutdown FS; the penalty for guessing false
  * incorrectly is more transaction rolls than might be necessary.
···
 	 */
 	if (cur->bc_private.a.priv.refc.nr_ops > 2 &&
 	    XFS_TEST_ERROR(false, cur->bc_mp,
-			XFS_ERRTAG_REFCOUNT_CONTINUE_UPDATE,
-			XFS_RANDOM_REFCOUNT_CONTINUE_UPDATE))
+			XFS_ERRTAG_REFCOUNT_CONTINUE_UPDATE))
 		return false;
 
 	if (cur->bc_private.a.priv.refc.nr_ops == 0)
···
 	else if (overhead > cur->bc_tp->t_log_res)
 		return false;
 	return  cur->bc_tp->t_log_res - overhead >
-		cur->bc_private.a.priv.refc.nr_ops * 32;
+		cur->bc_private.a.priv.refc.nr_ops * XFS_REFCOUNT_ITEM_OVERHEAD;
 }
 
 /*
···
 			blockcount);
 
 	if (XFS_TEST_ERROR(false, mp,
-			XFS_ERRTAG_REFCOUNT_FINISH_ONE,
-			XFS_RANDOM_REFCOUNT_FINISH_ONE))
+			XFS_ERRTAG_REFCOUNT_FINISH_ONE))
 		return -EIO;
 
 	/*

fs/xfs/libxfs/xfs_refcount.h

···
 extern int xfs_refcount_recover_cow_leftovers(struct xfs_mount *mp,
 		xfs_agnumber_t agno);
 
+/*
+ * While we're adjusting the refcounts records of an extent, we have
+ * to keep an eye on the number of extents we're dirtying -- run too
+ * many in a single transaction and we'll exceed the transaction's
+ * reservation and crash the fs.  Each record adds 12 bytes to the
+ * log (plus any key updates) so we'll conservatively assume 32 bytes
+ * per record.  We must also leave space for btree splits on both ends
+ * of the range and space for the CUD and a new CUI.
+ */
+#define XFS_REFCOUNT_ITEM_OVERHEAD	32
+
+static inline xfs_fileoff_t xfs_refcount_max_unmap(int log_res)
+{
+	return (log_res * 3 / 4) / XFS_REFCOUNT_ITEM_OVERHEAD;
+}
+
 #endif	/* __XFS_REFCOUNT_H__ */

fs/xfs/libxfs/xfs_refcount_btree.c

···
 	ptr->s = agf->agf_refcount_root;
 }
 
-STATIC __int64_t
+STATIC int64_t
 xfs_refcountbt_key_diff(
 	struct xfs_btree_cur	*cur,
 	union xfs_btree_key	*key)
···
 	struct xfs_refcount_irec	*rec = &cur->bc_rec.rc;
 	struct xfs_refcount_key		*kp = &key->refc;
 
-	return (__int64_t)be32_to_cpu(kp->rc_startblock) - rec->rc_startblock;
+	return (int64_t)be32_to_cpu(kp->rc_startblock) - rec->rc_startblock;
 }
 
-STATIC __int64_t
+STATIC int64_t
 xfs_refcountbt_diff_two_keys(
 	struct xfs_btree_cur	*cur,
 	union xfs_btree_key	*k1,
 	union xfs_btree_key	*k2)
 {
-	return (__int64_t)be32_to_cpu(k1->refc.rc_startblock) -
+	return (int64_t)be32_to_cpu(k1->refc.rc_startblock) -
 			  be32_to_cpu(k2->refc.rc_startblock);
 }
 
···
 	.verify_write		= xfs_refcountbt_write_verify,
 };
 
-#if defined(DEBUG) || defined(XFS_WARN)
 STATIC int
 xfs_refcountbt_keys_inorder(
 	struct xfs_btree_cur	*cur,
···
 		be32_to_cpu(r1->refc.rc_blockcount) <=
 		be32_to_cpu(r2->refc.rc_startblock);
 }
-#endif
 
 static const struct xfs_btree_ops xfs_refcountbt_ops = {
 	.rec_len		= sizeof(struct xfs_refcount_rec),
···
 	.key_diff		= xfs_refcountbt_key_diff,
 	.buf_ops		= &xfs_refcountbt_buf_ops,
 	.diff_two_keys		= xfs_refcountbt_diff_two_keys,
-#if defined(DEBUG) || defined(XFS_WARN)
 	.keys_inorder		= xfs_refcountbt_keys_inorder,
 	.recs_inorder		= xfs_refcountbt_recs_inorder,
-#endif
 };
 
 /*

fs/xfs/libxfs/xfs_rmap.c

···
 	return error;
 }
 
-static int
+/* Convert an internal btree record to an rmap record. */
+int
 xfs_rmap_btrec_to_irec(
 	union xfs_btree_rec	*rec,
 	struct xfs_rmap_irec	*irec)
···
 xfs_rmap_finish_one(
 	struct xfs_trans		*tp,
 	enum xfs_rmap_intent_type	type,
-	__uint64_t			owner,
+	uint64_t			owner,
 	int				whichfork,
 	xfs_fileoff_t			startoff,
 	xfs_fsblock_t			startblock,
···
 			startoff, blockcount, state);
 
 	if (XFS_TEST_ERROR(false, mp,
-			XFS_ERRTAG_RMAP_FINISH_ONE,
-			XFS_RANDOM_RMAP_FINISH_ONE))
+			XFS_ERRTAG_RMAP_FINISH_ONE))
 		return -EIO;
 
 	/*
···
 	struct xfs_mount		*mp,
 	struct xfs_defer_ops		*dfops,
 	enum xfs_rmap_intent_type	type,
-	__uint64_t			owner,
+	uint64_t			owner,
 	int				whichfork,
 	struct xfs_bmbt_irec		*bmap)
 {
···
 	xfs_agnumber_t		agno,
 	xfs_agblock_t		bno,
 	xfs_extlen_t		len,
-	__uint64_t		owner)
+	uint64_t		owner)
 {
 	struct xfs_bmbt_irec	bmap;
 
···
 	xfs_agnumber_t		agno,
 	xfs_agblock_t		bno,
 	xfs_extlen_t		len,
-	__uint64_t		owner)
+	uint64_t		owner)
 {
 	struct xfs_bmbt_irec	bmap;
 

fs/xfs/libxfs/xfs_rmap.h

···
 struct xfs_rmap_intent {
 	struct list_head			ri_list;
 	enum xfs_rmap_intent_type		ri_type;
-	__uint64_t				ri_owner;
+	uint64_t				ri_owner;
 	int					ri_whichfork;
 	struct xfs_bmbt_irec			ri_bmap;
 };
···
 		struct xfs_bmbt_irec *imap);
 int xfs_rmap_alloc_extent(struct xfs_mount *mp, struct xfs_defer_ops *dfops,
 		xfs_agnumber_t agno, xfs_agblock_t bno, xfs_extlen_t len,
-		__uint64_t owner);
+		uint64_t owner);
 int xfs_rmap_free_extent(struct xfs_mount *mp, struct xfs_defer_ops *dfops,
 		xfs_agnumber_t agno, xfs_agblock_t bno, xfs_extlen_t len,
-		__uint64_t owner);
+		uint64_t owner);
 
 void xfs_rmap_finish_one_cleanup(struct xfs_trans *tp,
 		struct xfs_btree_cur *rcur, int error);
 int xfs_rmap_finish_one(struct xfs_trans *tp, enum xfs_rmap_intent_type type,
-		__uint64_t owner, int whichfork, xfs_fileoff_t startoff,
+		uint64_t owner, int whichfork, xfs_fileoff_t startoff,
 		xfs_fsblock_t startblock, xfs_filblks_t blockcount,
 		xfs_exntst_t state, struct xfs_btree_cur **pcur);
 
···
 		struct xfs_rmap_irec *irec, int	*stat);
 int xfs_rmap_compare(const struct xfs_rmap_irec *a,
 		const struct xfs_rmap_irec *b);
+union xfs_btree_rec;
+int xfs_rmap_btrec_to_irec(union xfs_btree_rec *rec,
+		struct xfs_rmap_irec *irec);
 
 #endif	/* __XFS_RMAP_H__ */

fs/xfs/libxfs/xfs_rmap_btree.c

···
 	union xfs_btree_key	*key,
 	union xfs_btree_rec	*rec)
 {
-	__uint64_t		off;
+	uint64_t		off;
 	int			adj;
 
 	adj = be32_to_cpu(rec->rmap.rm_blockcount) - 1;
···
 	ptr->s = agf->agf_roots[cur->bc_btnum];
 }
 
-STATIC __int64_t
+STATIC int64_t
 xfs_rmapbt_key_diff(
 	struct xfs_btree_cur	*cur,
 	union xfs_btree_key	*key)
···
 	struct xfs_rmap_irec	*rec = &cur->bc_rec.r;
 	struct xfs_rmap_key	*kp = &key->rmap;
 	__u64			x, y;
-	__int64_t		d;
+	int64_t			d;
 
-	d = (__int64_t)be32_to_cpu(kp->rm_startblock) - rec->rm_startblock;
+	d = (int64_t)be32_to_cpu(kp->rm_startblock) - rec->rm_startblock;
 	if (d)
 		return d;
 
···
 	return 0;
 }
 
-STATIC __int64_t
+STATIC int64_t
 xfs_rmapbt_diff_two_keys(
 	struct xfs_btree_cur	*cur,
 	union xfs_btree_key	*k1,
···
 {
 	struct xfs_rmap_key	*kp1 = &k1->rmap;
 	struct xfs_rmap_key	*kp2 = &k2->rmap;
-	__int64_t		d;
+	int64_t			d;
 	__u64			x, y;
 
-	d = (__int64_t)be32_to_cpu(kp1->rm_startblock) -
+	d = (int64_t)be32_to_cpu(kp1->rm_startblock) -
 		       be32_to_cpu(kp2->rm_startblock);
 	if (d)
 		return d;
···
 	.verify_write		= xfs_rmapbt_write_verify,
 };
 
-#if defined(DEBUG) || defined(XFS_WARN)
 STATIC int
 xfs_rmapbt_keys_inorder(
 	struct xfs_btree_cur	*cur,
 	union xfs_btree_key	*k1,
 	union xfs_btree_key	*k2)
 {
-	__uint32_t		x;
-	__uint32_t		y;
-	__uint64_t		a;
-	__uint64_t		b;
+	uint32_t		x;
+	uint32_t		y;
+	uint64_t		a;
+	uint64_t		b;
 
 	x = be32_to_cpu(k1->rmap.rm_startblock);
 	y = be32_to_cpu(k2->rmap.rm_startblock);
···
 	union xfs_btree_rec	*r1,
 	union xfs_btree_rec	*r2)
 {
-	__uint32_t		x;
-	__uint32_t		y;
-	__uint64_t		a;
-	__uint64_t		b;
+	uint32_t		x;
+	uint32_t		y;
+	uint64_t		a;
+	uint64_t		b;
 
 	x = be32_to_cpu(r1->rmap.rm_startblock);
 	y = be32_to_cpu(r2->rmap.rm_startblock);
···
 		return 1;
 	return 0;
 }
-#endif	/* DEBUG */
 
 static const struct xfs_btree_ops xfs_rmapbt_ops = {
 	.rec_len		= sizeof(struct xfs_rmap_rec),
···
 	.key_diff		= xfs_rmapbt_key_diff,
 	.buf_ops		= &xfs_rmapbt_buf_ops,
 	.diff_two_keys		= xfs_rmapbt_diff_two_keys,
-#if defined(DEBUG) || defined(XFS_WARN)
 	.keys_inorder		= xfs_rmapbt_keys_inorder,
 	.recs_inorder		= xfs_rmapbt_recs_inorder,
-#endif
 };
 
 /*

fs/xfs/libxfs/xfs_rtbitmap.c

···
  * Get a buffer for the bitmap or summary file block specified.
  * The buffer is returned read and locked.
  */
-static int
+int
 xfs_rtbuf_get(
 	xfs_mount_t	*mp,		/* file system mount structure */
 	xfs_trans_t	*tp,		/* transaction pointer */
···
 	    mp->m_sb.sb_rextents) {
 		if (!(mp->m_rbmip->i_d.di_flags & XFS_DIFLAG_NEWRTBM))
 			mp->m_rbmip->i_d.di_flags |= XFS_DIFLAG_NEWRTBM;
-		*(__uint64_t *)&VFS_I(mp->m_rbmip)->i_atime = 0;
+		*(uint64_t *)&VFS_I(mp->m_rbmip)->i_atime = 0;
 		xfs_trans_log_inode(tp, mp->m_rbmip, XFS_ILOG_CORE);
 	}
 	return 0;

fs/xfs/libxfs/xfs_sb.c

···
 	struct xfs_dsb	*to,
 	struct xfs_sb	*from)
 {
-	__uint16_t	qflags = from->sb_qflags;
+	uint16_t	qflags = from->sb_qflags;
 
 	to->sb_uquotino = cpu_to_be64(from->sb_uquotino);
 	if (xfs_sb_version_has_pquotino(from)) {
···
 	mp->m_refc_mnr[1] = mp->m_refc_mxr[1] / 2;
 
 	mp->m_bsize = XFS_FSB_TO_BB(mp, 1);
-	mp->m_ialloc_inos = (int)MAX((__uint16_t)XFS_INODES_PER_CHUNK,
+	mp->m_ialloc_inos = (int)MAX((uint16_t)XFS_INODES_PER_CHUNK,
 					sbp->sb_inopblock);
 	mp->m_ialloc_blks = mp->m_ialloc_inos >> sbp->sb_inopblog;
 

fs/xfs/libxfs/xfs_symlink_remote.c

···
 	if (bp->b_bn != be64_to_cpu(dsl->sl_blkno))
 		return false;
 	if (be32_to_cpu(dsl->sl_offset) +
-				be32_to_cpu(dsl->sl_bytes) >= MAXPATHLEN)
+				be32_to_cpu(dsl->sl_bytes) >= XFS_SYMLINK_MAXLEN)
 		return false;
 	if (dsl->sl_owner == 0)
 		return false;

fs/xfs/libxfs/xfs_trans_resv.c

···
 /*
  * Making a new symplink is the same as creating a new file, but
  * with the added blocks for remote symlink data which can be up to 1kB in
- * length (MAXPATHLEN).
+ * length (XFS_SYMLINK_MAXLEN).
  */
 STATIC uint
 xfs_calc_symlink_reservation(
 	struct xfs_mount	*mp)
 {
 	return xfs_calc_create_reservation(mp) +
-	       xfs_calc_buf_res(1, MAXPATHLEN);
+	       xfs_calc_buf_res(1, XFS_SYMLINK_MAXLEN);
 }
 
 /*

fs/xfs/libxfs/xfs_types.h

···
 #ifndef __XFS_TYPES_H__
 #define	__XFS_TYPES_H__
 
-typedef __uint32_t	prid_t;		/* project ID */
+typedef uint32_t	prid_t;		/* project ID */
 
-typedef __uint32_t	xfs_agblock_t;	/* blockno in alloc. group */
-typedef	__uint32_t	xfs_agino_t;	/* inode # within allocation grp */
-typedef	__uint32_t	xfs_extlen_t;	/* extent length in blocks */
-typedef	__uint32_t	xfs_agnumber_t;	/* allocation group number */
-typedef __int32_t	xfs_extnum_t;	/* # of extents in a file */
-typedef __int16_t	xfs_aextnum_t;	/* # extents in an attribute fork */
-typedef	__int64_t	xfs_fsize_t;	/* bytes in a file */
-typedef __uint64_t	xfs_ufsize_t;	/* unsigned bytes in a file */
+typedef uint32_t	xfs_agblock_t;	/* blockno in alloc. group */
+typedef uint32_t	xfs_agino_t;	/* inode # within allocation grp */
+typedef uint32_t	xfs_extlen_t;	/* extent length in blocks */
+typedef uint32_t	xfs_agnumber_t;	/* allocation group number */
+typedef int32_t		xfs_extnum_t;	/* # of extents in a file */
+typedef int16_t		xfs_aextnum_t;	/* # extents in an attribute fork */
+typedef int64_t		xfs_fsize_t;	/* bytes in a file */
+typedef uint64_t	xfs_ufsize_t;	/* unsigned bytes in a file */
 
-typedef	__int32_t	xfs_suminfo_t;	/* type of bitmap summary info */
-typedef	__int32_t	xfs_rtword_t;	/* word type for bitmap manipulations */
+typedef int32_t		xfs_suminfo_t;	/* type of bitmap summary info */
+typedef int32_t		xfs_rtword_t;	/* word type for bitmap manipulations */
 
-typedef	__int64_t	xfs_lsn_t;	/* log sequence number */
-typedef	__int32_t	xfs_tid_t;	/* transaction identifier */
+typedef int64_t		xfs_lsn_t;	/* log sequence number */
+typedef int32_t		xfs_tid_t;	/* transaction identifier */
 
-typedef	__uint32_t	xfs_dablk_t;	/* dir/attr block number (in file) */
-typedef	__uint32_t	xfs_dahash_t;	/* dir/attr hash value */
+typedef uint32_t	xfs_dablk_t;	/* dir/attr block number (in file) */
+typedef uint32_t	xfs_dahash_t;	/* dir/attr hash value */
 
-typedef	__uint64_t	xfs_fsblock_t;	/* blockno in filesystem (agno|agbno) */
-typedef __uint64_t	xfs_rfsblock_t;	/* blockno in filesystem (raw) */
-typedef __uint64_t	xfs_rtblock_t;	/* extent (block) in realtime area */
-typedef __uint64_t	xfs_fileoff_t;	/* block number in a file */
-typedef __uint64_t	xfs_filblks_t;	/* number of blocks in a file */
+typedef uint64_t	xfs_fsblock_t;	/* blockno in filesystem (agno|agbno) */
+typedef uint64_t	xfs_rfsblock_t;	/* blockno in filesystem (raw) */
+typedef uint64_t	xfs_rtblock_t;	/* extent (block) in realtime area */
+typedef uint64_t	xfs_fileoff_t;	/* block number in a file */
+typedef uint64_t	xfs_filblks_t;	/* number of blocks in a file */
 
-typedef	__int64_t	xfs_srtblock_t;	/* signed version of xfs_rtblock_t */
-typedef __int64_t	xfs_sfiloff_t;	/* signed block number in a file */
+typedef int64_t		xfs_srtblock_t;	/* signed version of xfs_rtblock_t */
+typedef int64_t		xfs_sfiloff_t;	/* signed block number in a file */
 
 /*
  * Null values for the types.
···
  * uid_t and gid_t are hard-coded to 32 bits in the inode.
  * Hence, an 'id' in a dquot is 32 bits..
  */
-typedef __uint32_t	xfs_dqid_t;
+typedef uint32_t	xfs_dqid_t;
 
 /*
  * Constants for bit manipulations.

fs/xfs/xfs.h

···
 #define XFS_BUF_LOCK_TRACKING 1
 #endif
 
+#ifdef CONFIG_XFS_ASSERT_FATAL
+#define XFS_ASSERT_FATAL 1
+#endif
+
 #ifdef CONFIG_XFS_WARN
 #define XFS_WARN 1
 #endif

fs/xfs/xfs_acl.c

···
 	return acl;
 }
 
-STATIC int
-__xfs_set_acl(struct inode *inode, int type, struct posix_acl *acl)
+int
+__xfs_set_acl(struct inode *inode, struct posix_acl *acl, int type)
 {
 	struct xfs_inode *ip = XFS_I(inode);
 	unsigned char *ea_name;
···
 	}
 
  set_acl:
-	return __xfs_set_acl(inode, type, acl);
+	return __xfs_set_acl(inode, acl, type);
 }

fs/xfs/xfs_acl.h

···
 #ifdef CONFIG_XFS_POSIX_ACL
 extern struct posix_acl *xfs_get_acl(struct inode *inode, int type);
 extern int xfs_set_acl(struct inode *inode, struct posix_acl *acl, int type);
+extern int __xfs_set_acl(struct inode *inode, struct posix_acl *acl, int type);
 #else
 static inline struct posix_acl *xfs_get_acl(struct inode *inode, int type)
 {

fs/xfs/xfs_aops.c

···
 	struct inode		*inode,
 	struct page		*page,
 	loff_t			offset,
-	__uint64_t              end_offset)
+	uint64_t              end_offset)
 {
 	LIST_HEAD(submit_list);
 	struct xfs_ioend	*ioend, *next;
···
 	struct xfs_writepage_ctx *wpc = data;
 	struct inode		*inode = page->mapping->host;
 	loff_t			offset;
-	__uint64_t              end_offset;
+	uint64_t              end_offset;
 	pgoff_t                 end_index;
 
 	trace_xfs_writepage(inode, page, 0, 0);

fs/xfs/xfs_attr.h

···
 			      unsigned char *, int, int);
 
 typedef struct xfs_attr_list_context {
+	struct xfs_trans		*tp;
 	struct xfs_inode		*dp;		/* inode */
 	struct attrlist_cursor_kern	*cursor;	/* position in list */
 	char				*alist;		/* output buffer */
···
  * Overall external interface routines.
  */
 int xfs_attr_inactive(struct xfs_inode *dp);
+int xfs_attr_list_int_ilocked(struct xfs_attr_list_context *);
 int xfs_attr_list_int(struct xfs_attr_list_context *);
 int xfs_inode_hasattr(struct xfs_inode *ip);
+int xfs_attr_get_ilocked(struct xfs_inode *ip, struct xfs_da_args *args);
 int xfs_attr_get(struct xfs_inode *ip, const unsigned char *name,
 		 unsigned char *value, int *valuelenp, int flags);
 int xfs_attr_set(struct xfs_inode *dp, const unsigned char *name,

fs/xfs/xfs_attr_list.c

···
 	 */
 	bp = NULL;
 	if (cursor->blkno > 0) {
-		error = xfs_da3_node_read(NULL, dp, cursor->blkno, -1,
+		error = xfs_da3_node_read(context->tp, dp, cursor->blkno, -1,
 					      &bp, XFS_ATTR_FORK);
 		if ((error != 0) && (error != -EFSCORRUPTED))
 			return error;
···
 			case XFS_DA_NODE_MAGIC:
 			case XFS_DA3_NODE_MAGIC:
 				trace_xfs_attr_list_wrong_blk(context);
-				xfs_trans_brelse(NULL, bp);
+				xfs_trans_brelse(context->tp, bp);
 				bp = NULL;
 				break;
 			case XFS_ATTR_LEAF_MAGIC:
···
 				if (cursor->hashval > be32_to_cpu(
 						entries[leafhdr.count - 1].hashval)) {
 					trace_xfs_attr_list_wrong_blk(context);
-					xfs_trans_brelse(NULL, bp);
+					xfs_trans_brelse(context->tp, bp);
 					bp = NULL;
 				} else if (cursor->hashval <= be32_to_cpu(
 						entries[0].hashval)) {
 					trace_xfs_attr_list_wrong_blk(context);
-					xfs_trans_brelse(NULL, bp);
+					xfs_trans_brelse(context->tp, bp);
 					bp = NULL;
 				}
 				break;
 			default:
 				trace_xfs_attr_list_wrong_blk(context);
-				xfs_trans_brelse(NULL, bp);
+				xfs_trans_brelse(context->tp, bp);
 				bp = NULL;
 			}
 		}
···
 	if (bp == NULL) {
 		cursor->blkno = 0;
 		for (;;) {
-			__uint16_t magic;
+			uint16_t magic;
 
-			error = xfs_da3_node_read(NULL, dp,
+			error = xfs_da3_node_read(context->tp, dp,
 						      cursor->blkno, -1, &bp,
 						      XFS_ATTR_FORK);
 			if (error)
···
 						     XFS_ERRLEVEL_LOW,
 						     context->dp->i_mount,
 						     node);
-				xfs_trans_brelse(NULL, bp);
+				xfs_trans_brelse(context->tp, bp);
 				return -EFSCORRUPTED;
 			}
 
···
 				}
 			}
 			if (i == nodehdr.count) {
-				xfs_trans_brelse(NULL, bp);
+				xfs_trans_brelse(context->tp, bp);
 				return 0;
 			}
-			xfs_trans_brelse(NULL, bp);
+			xfs_trans_brelse(context->tp, bp);
 		}
 	}
 	ASSERT(bp != NULL);
···
 		if (context->seen_enough || leafhdr.forw == 0)
 			break;
 		cursor->blkno = leafhdr.forw;
-		xfs_trans_brelse(NULL, bp);
-		error = xfs_attr3_leaf_read(NULL, dp, cursor->blkno, -1, &bp);
+		xfs_trans_brelse(context->tp, bp);
+		error = xfs_attr3_leaf_read(context->tp, dp, cursor->blkno, -1, &bp);
 		if (error)
 			return error;
 	}
-	xfs_trans_brelse(NULL, bp);
+	xfs_trans_brelse(context->tp, bp);
 	return 0;
 }
 
···
 	trace_xfs_attr_leaf_list(context);
 
 	context->cursor->blkno = 0;
-	error = xfs_attr3_leaf_read(NULL, context->dp, 0, -1, &bp);
+	error = xfs_attr3_leaf_read(context->tp, context->dp, 0, -1, &bp);
 	if (error)
 		return error;
 
 	xfs_attr3_leaf_list_int(bp, context);
-	xfs_trans_brelse(NULL, bp);
+	xfs_trans_brelse(context->tp, bp);
 	return 0;
+}
+
+int
+xfs_attr_list_int_ilocked(
+	struct xfs_attr_list_context	*context)
+{
+	struct xfs_inode		*dp = context->dp;
+
+	/*
+	 * Decide on what work routines to call based on the inode size.
+	 */
+	if (!xfs_inode_hasattr(dp))
+		return 0;
+	else if (dp->i_d.di_aformat == XFS_DINODE_FMT_LOCAL)
+		return xfs_attr_shortform_list(context);
+	else if (xfs_bmap_one_block(dp, XFS_ATTR_FORK))
+		return xfs_attr_leaf_list(context);
+	return xfs_attr_node_list(context);
 }
 
 int
···
 	if (XFS_FORCED_SHUTDOWN(dp->i_mount))
 		return -EIO;
 
-	/*
-	 * Decide on what work routines to call based on the inode size.
-	 */
 	lock_mode = xfs_ilock_attr_map_shared(dp);
-	if (!xfs_inode_hasattr(dp)) {
-		error = 0;
-	} else if (dp->i_d.di_aformat == XFS_DINODE_FMT_LOCAL) {
-		error = xfs_attr_shortform_list(context);
-	} else if (xfs_bmap_one_block(dp, XFS_ATTR_FORK)) {
-		error = xfs_attr_leaf_list(context);
-	} else {
-		error = xfs_attr_node_list(context);
-	}
+	error = xfs_attr_list_int_ilocked(context);
 	xfs_iunlock(dp, lock_mode);
 	return error;
 }

fs/xfs/xfs_bmap_item.c

···
 	struct xfs_map_extent		*bmap;
 	xfs_fsblock_t			startblock_fsb;
 	xfs_fsblock_t			inode_fsb;
+	xfs_filblks_t			count;
 	bool				op_ok;
 	struct xfs_bud_log_item		*budp;
 	enum xfs_bmap_intent_type	type;
···
 	struct xfs_trans		*tp;
 	struct xfs_inode		*ip = NULL;
 	struct xfs_defer_ops		dfops;
+	struct xfs_bmbt_irec		irec;
 	xfs_fsblock_t			firstfsb;
 
 	ASSERT(!test_bit(XFS_BUI_RECOVERED, &buip->bui_flags));
···
 	}
 	xfs_trans_ijoin(tp, ip, 0);
 
+	count = bmap->me_len;
 	error = xfs_trans_log_finish_bmap_update(tp, budp, &dfops, type,
 			ip, whichfork, bmap->me_startoff,
-			bmap->me_startblock, bmap->me_len,
-			state);
+			bmap->me_startblock, &count, state);
 	if (error)
 		goto err_dfops;
+
+	if (count > 0) {
+		ASSERT(type == XFS_BMAP_UNMAP);
+		irec.br_startblock = bmap->me_startblock;
+		irec.br_blockcount = count;
+		irec.br_startoff = bmap->me_startoff;
+		irec.br_state = state;
+		error = xfs_bmap_unmap_extent(tp->t_mountp, &dfops, ip, &irec);
+		if (error)
+			goto err_dfops;
+	}
 
 	/* Finish transaction, free inodes. */
 	error = xfs_defer_finish(&tp, &dfops, NULL);

fs/xfs/xfs_bmap_util.c

···
  */
 
 /*
- * Count leaf blocks given a range of extent records.
+ * Count leaf blocks given a range of extent records.  Delayed allocation
+ * extents are not counted towards the totals.
  */
 STATIC void
 xfs_bmap_count_leaves(
-	xfs_ifork_t		*ifp,
-	xfs_extnum_t		idx,
-	int			numrecs,
-	int			*count)
+	struct xfs_ifork	*ifp,
+	xfs_extnum_t		*numrecs,
+	xfs_filblks_t		*count)
 {
-	int		b;
+	xfs_extnum_t		i;
+	xfs_extnum_t		nr_exts = xfs_iext_count(ifp);
 
-	for (b = 0; b < numrecs; b++) {
-		xfs_bmbt_rec_host_t *frp = xfs_iext_get_ext(ifp, idx + b);
-		*count += xfs_bmbt_get_blockcount(frp);
+	for (i = 0; i < nr_exts; i++) {
+		xfs_bmbt_rec_host_t *frp = xfs_iext_get_ext(ifp, i);
+		if (!isnullstartblock(xfs_bmbt_get_startblock(frp))) {
+			(*numrecs)++;
+			*count += xfs_bmbt_get_blockcount(frp);
+		}
 	}
 }
 
···
 	struct xfs_mount	*mp,
 	struct xfs_btree_block	*block,
 	int			numrecs,
-	int			*count)
+	xfs_filblks_t		*count)
 {
 	int		b;
 	xfs_bmbt_rec_t	*frp;
···
  * Recursively walks each level of a btree
  * to count total fsblocks in use.
  */
-STATIC int                                     /* error */
+STATIC int
 xfs_bmap_count_tree(
-	xfs_mount_t     *mp,            /* file system mount point */
-	xfs_trans_t     *tp,            /* transaction pointer */
-	xfs_ifork_t	*ifp,		/* inode fork pointer */
-	xfs_fsblock_t   blockno,	/* file system block number */
-	int             levelin,	/* level in btree */
-	int		*count)		/* Count of blocks */
+	struct xfs_mount	*mp,
+	struct xfs_trans	*tp,
+	struct xfs_ifork	*ifp,
+	xfs_fsblock_t		blockno,
+	int			levelin,
+	xfs_extnum_t		*nextents,
+	xfs_filblks_t		*count)
 {
 	int			error;
-	xfs_buf_t		*bp, *nbp;
+	struct xfs_buf		*bp, *nbp;
 	int			level = levelin;
 	__be64			*pp;
 	xfs_fsblock_t           bno = blockno;
···
 		/* Dive to the next level */
 		pp = XFS_BMBT_PTR_ADDR(mp, block, 1, mp->m_bmap_dmxr[1]);
 		bno = be64_to_cpu(*pp);
-		if (unlikely((error =
-		     xfs_bmap_count_tree(mp, tp, ifp, bno, level, count)) < 0)) {
+		error = xfs_bmap_count_tree(mp, tp, ifp, bno, level, nextents,
+				count);
+		if (error) {
 			xfs_trans_brelse(tp, bp);
 			XFS_ERROR_REPORT("xfs_bmap_count_tree(1)",
 					 XFS_ERRLEVEL_LOW, mp);
···
 		for (;;) {
 			nextbno = be64_to_cpu(block->bb_u.l.bb_rightsib);
 			numrecs = be16_to_cpu(block->bb_numrecs);
+			(*nextents) += numrecs;
 			xfs_bmap_disk_count_leaves(mp, block, numrecs, count);
 			xfs_trans_brelse(tp, bp);
 			if (nextbno == NULLFSBLOCK)
···
 }
 
 /*
- * Count fsblocks of the given fork.
+ * Count fsblocks of the given fork.  Delayed allocation extents are
+ * not counted towards the totals.
  */
-static int					/* error */
+int
 xfs_bmap_count_blocks(
-	xfs_trans_t		*tp,		/* transaction pointer */
-	xfs_inode_t		*ip,		/* incore inode */
-	int			whichfork,	/* data or attr fork */
-	int			*count)		/* out: count of blocks */
+	struct xfs_trans	*tp,
+	struct xfs_inode	*ip,
+	int			whichfork,
+	xfs_extnum_t		*nextents,
+	xfs_filblks_t		*count)
 {
-	struct xfs_btree_block	*block;	/* current btree block */
-	xfs_fsblock_t		bno;	/* block # of "block" */
-	xfs_ifork_t		*ifp;	/* fork structure */
-	int			level;	/* btree level, for checking */
-	xfs_mount_t		*mp;	/* file system mount structure */
+	struct xfs_mount	*mp;	/* file system mount structure */
 	__be64			*pp;	/* pointer to block address */
+	struct xfs_btree_block	*block;	/* current btree block */
+	struct xfs_ifork	*ifp;	/* fork structure */
+	xfs_fsblock_t		bno;	/* block # of "block" */
+	int			level;	/* btree level, for checking */
+	int			error;
 
 	bno = NULLFSBLOCK;
 	mp = ip->i_mount;
+	*nextents = 0;
+	*count = 0;
 	ifp = XFS_IFORK_PTR(ip, whichfork);
-	if ( XFS_IFORK_FORMAT(ip, whichfork) == XFS_DINODE_FMT_EXTENTS ) {
-		xfs_bmap_count_leaves(ifp, 0, xfs_iext_count(ifp), count);
+	if (!ifp)
 		return 0;
-	}
 
-	/*
-	 * Root level must use BMAP_BROOT_PTR_ADDR macro to get ptr out.
-	 */
-	block = ifp->if_broot;
-	level = be16_to_cpu(block->bb_level);
-	ASSERT(level > 0);
-	pp = XFS_BMAP_BROOT_PTR_ADDR(mp, block, 1, ifp->if_broot_bytes);
-	bno = be64_to_cpu(*pp);
-	ASSERT(bno != NULLFSBLOCK);
-	ASSERT(XFS_FSB_TO_AGNO(mp, bno) < mp->m_sb.sb_agcount);
-	ASSERT(XFS_FSB_TO_AGBNO(mp, bno) < mp->m_sb.sb_agblocks);
+	switch (XFS_IFORK_FORMAT(ip, whichfork)) {
+	case XFS_DINODE_FMT_EXTENTS:
+		xfs_bmap_count_leaves(ifp, nextents, count);
+		return 0;
+	case XFS_DINODE_FMT_BTREE:
+		if (!(ifp->if_flags & XFS_IFEXTENTS)) {
+			error = xfs_iread_extents(tp, ip, whichfork);
+			if (error)
+				return error;
+		}
 
-	if (unlikely(xfs_bmap_count_tree(mp, tp, ifp, bno, level, count) < 0)) {
-		XFS_ERROR_REPORT("xfs_bmap_count_blocks(2)", XFS_ERRLEVEL_LOW,
-				 mp);
-		return -EFSCORRUPTED;
+		/*
+		 * Root level must use BMAP_BROOT_PTR_ADDR macro to get ptr out.
+		 */
+		block = ifp->if_broot;
+		level = be16_to_cpu(block->bb_level);
+		ASSERT(level > 0);
+		pp = XFS_BMAP_BROOT_PTR_ADDR(mp, block, 1, ifp->if_broot_bytes);
+		bno = be64_to_cpu(*pp);
+		ASSERT(bno != NULLFSBLOCK);
+		ASSERT(XFS_FSB_TO_AGNO(mp, bno) < mp->m_sb.sb_agcount);
+		ASSERT(XFS_FSB_TO_AGBNO(mp, bno) < mp->m_sb.sb_agblocks);
+
+		error = xfs_bmap_count_tree(mp, tp, ifp, bno, level,
+				nextents, count);
+		if (error) {
+			XFS_ERROR_REPORT("xfs_bmap_count_blocks(2)",
+					XFS_ERRLEVEL_LOW, mp);
+			return -EFSCORRUPTED;
+		}
+		return 0;
 	}
 
 	return 0;
···
 	struct getbmapx		*out,		/* output structure */
 	int			prealloced,	/* this is a file with
 						 * preallocated data space */
-	__int64_t		end,		/* last block requested */
+	int64_t			end,		/* last block requested */
 	xfs_fsblock_t		startblock,
 	bool			moretocome)
 {
-	__int64_t		fixlen;
+	int64_t			fixlen;
 	xfs_mount_t		*mp;		/* file system mount point */
 	xfs_ifork_t		*ifp;		/* inode fork pointer */
 	xfs_extnum_t		lastx;		/* last extent pointer */
···
 
 	agno = XFS_FSB_TO_AGNO(mp, map->br_startblock);
 	agbno = XFS_FSB_TO_AGBNO(mp, map->br_startblock);
-	error = xfs_reflink_find_shared(mp, agno, agbno, map->br_blockcount,
-			&ebno, &elen, true);
+	error = xfs_reflink_find_shared(mp, NULL, agno, agbno,
+			map->br_blockcount, &ebno, &elen, true);
 	if (error)
 		return error;
 
···
 	xfs_bmap_format_t	formatter,	/* format to user */
 	void			*arg)		/* formatter arg */
 {
-	__int64_t		bmvend;		/* last block requested */
+	int64_t			bmvend;		/* last block requested */
 	int			error = 0;	/* return value */
-	__int64_t		fixlen;		/* length for -1 case */
+	int64_t			fixlen;		/* length for -1 case */
 	int			i;		/* extent number */
 	int			lock;		/* lock state */
 	xfs_bmbt_irec_t		*map;		/* buffer for user's data */
···
 	if (bmv->bmv_length == -1) {
 		fixlen = XFS_FSB_TO_BB(mp, XFS_B_TO_FSB(mp, fixlen));
 		bmv->bmv_length =
-			max_t(__int64_t, fixlen - bmv->bmv_offset, 0);
+			max_t(int64_t, fixlen - bmv->bmv_offset, 0);
 	} else if (bmv->bmv_length == 0) {
 		bmv->bmv_entries = 0;
 		return 0;
···
 				out[cur_ext].bmv_offset +
 				out[cur_ext].bmv_length;
 			bmv->bmv_length =
-				max_t(__int64_t, 0, bmvend - bmv->bmv_offset);
+				max_t(int64_t, 0, bmvend - bmv->bmv_offset);
 
 			/*
 			 * In case we don't want to return the hole,
···
 	 * extent format...
 	 */
 	if (tip->i_d.di_format == XFS_DINODE_FMT_BTREE) {
-		if (XFS_IFORK_BOFF(ip) &&
+		if (XFS_IFORK_Q(ip) &&
 		    XFS_BMAP_BMDR_SPACE(tip->i_df.if_broot) > XFS_IFORK_BOFF(ip))
 			return -EINVAL;
 		if (XFS_IFORK_NEXTENTS(tip, XFS_DATA_FORK) <=
···
 
 	/* Reciprocal target->temp btree format checks */
 	if (ip->i_d.di_format == XFS_DINODE_FMT_BTREE) {
-		if (XFS_IFORK_BOFF(tip) &&
+		if (XFS_IFORK_Q(tip) &&
 		    XFS_BMAP_BMDR_SPACE(ip->i_df.if_broot) > XFS_IFORK_BOFF(tip))
 			return -EINVAL;
 		if (XFS_IFORK_NEXTENTS(ip, XFS_DATA_FORK) <=
···
 	xfs_filblks_t			ilen;
 	xfs_filblks_t			rlen;
 	int				nimaps;
-	__uint64_t			tip_flags2;
+	uint64_t			tip_flags2;
 
 	/*
 	 * If the source file has shared blocks, we must flag the donor
···
 	int			*target_log_flags)
 {
 	struct xfs_ifork	tempifp, *ifp, *tifp;
-	int			aforkblks = 0;
-	int			taforkblks = 0;
+	xfs_filblks_t		aforkblks = 0;
+	xfs_filblks_t		taforkblks = 0;
+	xfs_extnum_t		junk;
 	xfs_extnum_t		nextents;
-	__uint64_t		tmp;
+	uint64_t		tmp;
 	int			error;
 
 	/*
···
 	 */
 	if ( ((XFS_IFORK_Q(ip) != 0) && (ip->i_d.di_anextents > 0)) &&
 	     (ip->i_d.di_aformat != XFS_DINODE_FMT_LOCAL)) {
-		error = xfs_bmap_count_blocks(tp, ip, XFS_ATTR_FORK,
+		error = xfs_bmap_count_blocks(tp, ip, XFS_ATTR_FORK, &junk,
 				&aforkblks);
 		if (error)
 			return error;
 	}
 	if ( ((XFS_IFORK_Q(tip) != 0) && (tip->i_d.di_anextents > 0)) &&
 	     (tip->i_d.di_aformat != XFS_DINODE_FMT_LOCAL)) {
-		error = xfs_bmap_count_blocks(tp, tip, XFS_ATTR_FORK,
+		error = xfs_bmap_count_blocks(tp, tip, XFS_ATTR_FORK, &junk,
 				&taforkblks);
 		if (error)
 			return error;
···
 	/*
 	 * Fix the on-disk inode values
 	 */
-	tmp = (__uint64_t)ip->i_d.di_nblocks;
+	tmp = (uint64_t)ip->i_d.di_nblocks;
 	ip->i_d.di_nblocks = tip->i_d.di_nblocks - taforkblks + aforkblks;
 	tip->i_d.di_nblocks = tmp + taforkblks - aforkblks;
 
-	tmp = (__uint64_t) ip->i_d.di_nextents;
+	tmp = (uint64_t) ip->i_d.di_nextents;
 	ip->i_d.di_nextents = tip->i_d.di_nextents;
 	tip->i_d.di_nextents = tmp;
 
-	tmp = (__uint64_t) ip->i_d.di_format;
+	tmp = (uint64_t) ip->i_d.di_format;
 	ip->i_d.di_format = tip->i_d.di_format;
 	tip->i_d.di_format = tmp;
 
···
 	int			error = 0;
 	int			lock_flags;
 	struct xfs_ifork	*cowfp;
-	__uint64_t		f;
+	uint64_t		f;
 	int			resblks;
 
 	/*

fs/xfs/xfs_bmap_util.h

···
 
 xfs_daddr_t xfs_fsb_to_db(struct xfs_inode *ip, xfs_fsblock_t fsb);
 
+int xfs_bmap_count_blocks(struct xfs_trans *tp, struct xfs_inode *ip,
+			  int whichfork, xfs_extnum_t *nextents,
+			  xfs_filblks_t *count);
+
 #endif	/* __XFS_BMAP_UTIL_H__ */

fs/xfs/xfs_buf.c

···
 {
 	xfs_alert(bp->b_target->bt_mount,
 "metadata I/O error: block 0x%llx (\"%s\") error %d numblks %d",
-		(__uint64_t)XFS_BUF_ADDR(bp), func, -bp->b_error, bp->b_length);
+		(uint64_t)XFS_BUF_ADDR(bp), func, -bp->b_error, bp->b_length);
 }
 
 int
···
 		if (!error)
 			error = error2;
 	}
+
+	return error;
+}
+
+/*
+ * Push a single buffer on a delwri queue.
+ *
+ * The purpose of this function is to submit a single buffer of a delwri queue
+ * and return with the buffer still on the original queue. The waiting delwri
+ * buffer submission infrastructure guarantees transfer of the delwri queue
+ * buffer reference to a temporary wait list. We reuse this infrastructure to
+ * transfer the buffer back to the original queue.
+ *
+ * Note the buffer transitions from the queued state, to the submitted and wait
+ * listed state and back to the queued state during this call. The buffer
+ * locking and queue management logic between _delwri_pushbuf() and
+ * _delwri_queue() guarantee that the buffer cannot be queued to another list
+ * before returning.
+ */
+int
+xfs_buf_delwri_pushbuf(
+	struct xfs_buf		*bp,
+	struct list_head	*buffer_list)
+{
+	LIST_HEAD		(submit_list);
+	int			error;
+
+	ASSERT(bp->b_flags & _XBF_DELWRI_Q);
+
+	trace_xfs_buf_delwri_pushbuf(bp, _RET_IP_);
+
+	/*
+	 * Isolate the buffer to a new local list so we can submit it for I/O
+	 * independently from the rest of the original list.
+	 */
+	xfs_buf_lock(bp);
+	list_move(&bp->b_list, &submit_list);
+	xfs_buf_unlock(bp);
+
+	/*
+	 * Delwri submission clears the DELWRI_Q buffer flag and returns with
+	 * the buffer on the wait list with an associated reference. Rather than
+	 * bounce the buffer from a local wait list back to the original list
+	 * after I/O completion, reuse the original list as the wait list.
+	 */
+	xfs_buf_delwri_submit_buffers(&submit_list, buffer_list);
+
+	/*
+	 * The buffer is now under I/O and wait listed as during typical delwri
+	 * submission. Lock the buffer to wait for I/O completion. Rather than
+	 * remove the buffer from the wait list and release the reference, we
+	 * want to return with the buffer queued to the original list. The
+	 * buffer already sits on the original list with a wait list reference,
+	 * however. If we let the queue inherit that wait list reference, all we
+	 * need to do is reset the DELWRI_Q flag.
+	 */
+	xfs_buf_lock(bp);
+	error = bp->b_error;
+	bp->b_flags |= _XBF_DELWRI_Q;
+	xfs_buf_unlock(bp);
 
 	return error;
 }

fs/xfs/xfs_buf.h

···
 extern bool xfs_buf_delwri_queue(struct xfs_buf *, struct list_head *);
 extern int xfs_buf_delwri_submit(struct list_head *);
 extern int xfs_buf_delwri_submit_nowait(struct list_head *);
+extern int xfs_buf_delwri_pushbuf(struct xfs_buf *, struct list_head *);
 
 /* Buffer Daemon Setup Routines */
 extern int xfs_buf_init(void);

fs/xfs/xfs_buf_item.c

···
 
 	/*
 	 * Clean buffers, by definition, cannot be in the AIL. However, aborted
-	 * buffers may be dirty and hence in the AIL. Therefore if we are
-	 * aborting a buffer and we've just taken the last refernce away, we
-	 * have to check if it is in the AIL before freeing it. We need to free
-	 * it in this case, because an aborted transaction has already shut the
-	 * filesystem down and this is the last chance we will have to do so.
+	 * buffers may be in the AIL regardless of dirty state. An aborted
+	 * transaction that invalidates a buffer already in the AIL may have
+	 * marked it stale and cleared the dirty state, for example.
+	 *
+	 * Therefore if we are aborting a buffer and we've just taken the last
+	 * reference away, we have to check if it is in the AIL before freeing
+	 * it. We need to free it in this case, because an aborted transaction
+	 * has already shut the filesystem down and this is the last chance we
+	 * will have to do so.
 	 */
 	if (atomic_dec_and_test(&bip->bli_refcount)) {
-		if (clean)
-			xfs_buf_item_relse(bp);
-		else if (aborted) {
+		if (aborted) {
 			ASSERT(XFS_FORCED_SHUTDOWN(lip->li_mountp));
 			xfs_trans_ail_remove(lip, SHUTDOWN_LOG_IO_ERROR);
 			xfs_buf_item_relse(bp);
-		}
+		} else if (clean)
+			xfs_buf_item_relse(bp);
 	}
 
 	if (!(flags & XFS_BLI_HOLD))

fs/xfs/xfs_dir2_readdir.c

···
 static unsigned char
 xfs_dir3_get_dtype(
 	struct xfs_mount	*mp,
-	__uint8_t		filetype)
+	uint8_t			filetype)
 {
 	if (!xfs_sb_version_hasftype(&mp->m_sb))
 		return DT_UNKNOWN;
···
 	 */
 	sfep = xfs_dir2_sf_firstentry(sfp);
 	for (i = 0; i < sfp->count; i++) {
-		__uint8_t filetype;
+		uint8_t filetype;
 
 		off = xfs_dir2_db_off_to_dataptr(geo, geo->datablk,
 				xfs_dir2_sf_get_offset(sfep));
···
 		return 0;
 
 	lock_mode = xfs_ilock_data_map_shared(dp);
-	error = xfs_dir3_block_read(NULL, dp, &bp);
+	error = xfs_dir3_block_read(args->trans, dp, &bp);
 	xfs_iunlock(dp, lock_mode);
 	if (error)
 		return error;
···
 	 * Each object is a real entry (dep) or an unused one (dup).
 	 */
 	while (ptr < endptr) {
-		__uint8_t filetype;
+		uint8_t filetype;
 
 		dup = (xfs_dir2_data_unused_t *)ptr;
 		/*
···
 		if (!dir_emit(ctx, (char *)dep->name, dep->namelen,
 			    be64_to_cpu(dep->inumber),
 			    xfs_dir3_get_dtype(dp->i_mount, filetype))) {
-			xfs_trans_brelse(NULL, bp);
+			xfs_trans_brelse(args->trans, bp);
 			return 0;
 		}
 	}
···
 	 */
 	ctx->pos = xfs_dir2_db_off_to_dataptr(geo, geo->datablk + 1, 0) &
 								0x7fffffff;
-	xfs_trans_brelse(NULL, bp);
+	xfs_trans_brelse(args->trans, bp);
 	return 0;
 }
 
-struct xfs_dir2_leaf_map_info {
-	xfs_extlen_t	map_blocks;	/* number of fsbs in map */
-	xfs_dablk_t	map_off;	/* last mapped file offset */
-	int		map_size;	/* total entries in *map */
-	int		map_valid;	/* valid entries in *map */
-	int		nmap;		/* mappings to ask xfs_bmapi */
-	xfs_dir2_db_t	curdb;		/* db for current block */
-	int		ra_current;	/* number of read-ahead blks */
-	int		ra_index;	/* *map index for read-ahead */
-	int		ra_offset;	/* map entry offset for ra */
-	int		ra_want;	/* readahead count wanted */
-	struct xfs_bmbt_irec map[];	/* map vector for blocks */
-};
-
+/*
+ * Read a directory block and initiate readahead for blocks beyond that.
+ * We maintain a sliding readahead window of the remaining space in the
+ * buffer rounded up to the nearest block.
+ */
 STATIC int
 xfs_dir2_leaf_readbuf(
 	struct xfs_da_args	*args,
 	size_t			bufsize,
-	struct xfs_dir2_leaf_map_info *mip,
-	xfs_dir2_off_t		*curoff,
-	struct xfs_buf		**bpp,
-	bool			trim_map)
+	xfs_dir2_off_t		*cur_off,
+	xfs_dablk_t		*ra_blk,
+	struct xfs_buf		**bpp)
 {
 	struct xfs_inode	*dp = args->dp;
 	struct xfs_buf		*bp = NULL;
-	struct xfs_bmbt_irec	*map = mip->map;
-	struct blk_plug		plug;
-	int			error = 0;
-	int			length;
-	int			i;
-	int			j;
 	struct xfs_da_geometry	*geo = args->geo;
+	struct xfs_ifork	*ifp = XFS_IFORK_PTR(dp, XFS_DATA_FORK);
+	struct xfs_bmbt_irec	map;
+	struct blk_plug		plug;
+	xfs_dir2_off_t		new_off;
+	xfs_dablk_t		next_ra;
+	xfs_dablk_t		map_off;
+	xfs_dablk_t		last_da;
+	xfs_extnum_t		idx;
+	int			ra_want;
+	int			error = 0;
 
-	/*
-	 * If the caller just finished processing a buffer, it will tell us
-	 * we need to trim that block out of the mapping now it is done.
-	 */
-	if (trim_map) {
-		mip->map_blocks -= geo->fsbcount;
-		/*
-		 * Loop to get rid of the extents for the
-		 * directory block.
-		 */
-		for (i = geo->fsbcount; i > 0; ) {
-			j = min_t(int, map->br_blockcount, i);
-			map->br_blockcount -= j;
-			map->br_startblock += j;
-			map->br_startoff += j;
-			/*
-			 * If mapping is done, pitch it from
-			 * the table.
-			 */
-			if (!map->br_blockcount && --mip->map_valid)
-				memmove(&map[0], &map[1],
-					sizeof(map[0]) * mip->map_valid);
-			i -= j;
-		}
-	}
-
-	/*
-	 * Recalculate the readahead blocks wanted.
-	 */
-	mip->ra_want = howmany(bufsize + geo->blksize, (1 << geo->fsblog)) - 1;
-	ASSERT(mip->ra_want >= 0);
-
-	/*
-	 * If we don't have as many as we want, and we haven't
-	 * run out of data blocks, get some more mappings.
-	 */
-	if (1 + mip->ra_want > mip->map_blocks &&
-	    mip->map_off < xfs_dir2_byte_to_da(geo, XFS_DIR2_LEAF_OFFSET)) {
-		/*
-		 * Get more bmaps, fill in after the ones
-		 * we already have in the table.
-		 */
-		mip->nmap = mip->map_size - mip->map_valid;
-		error = xfs_bmapi_read(dp, mip->map_off,
-				xfs_dir2_byte_to_da(geo, XFS_DIR2_LEAF_OFFSET) -
-								mip->map_off,
-				&map[mip->map_valid], &mip->nmap, 0);
-
-		/*
-		 * Don't know if we should ignore this or try to return an
-		 * error.  The trouble with returning errors is that readdir
-		 * will just stop without actually passing the error through.
-		 */
+	if (!(ifp->if_flags & XFS_IFEXTENTS)) {
+		error = xfs_iread_extents(args->trans, dp, XFS_DATA_FORK);
 		if (error)
-			goto out;	/* XXX */
-
-		/*
-		 * If we got all the mappings we asked for, set the final map
-		 * offset based on the last bmap value received.  Otherwise,
-		 * we've reached the end.
-		 */
-		if (mip->nmap == mip->map_size - mip->map_valid) {
-			i = mip->map_valid + mip->nmap - 1;
-			mip->map_off = map[i].br_startoff + map[i].br_blockcount;
-		} else
-			mip->map_off = xfs_dir2_byte_to_da(geo,
-							XFS_DIR2_LEAF_OFFSET);
-
-		/*
-		 * Look for holes in the mapping, and eliminate them.  Count up
-		 * the valid blocks.
-		 */
-		for (i = mip->map_valid; i < mip->map_valid + mip->nmap; ) {
-			if (map[i].br_startblock == HOLESTARTBLOCK) {
-				mip->nmap--;
-				length = mip->map_valid + mip->nmap - i;
-				if (length)
-					memmove(&map[i], &map[i + 1],
-						sizeof(map[i]) * length);
-			} else {
-				mip->map_blocks += map[i].br_blockcount;
-				i++;
-			}
-		}
-		mip->map_valid += mip->nmap;
+			goto out;
 	}
 
 	/*
-	 * No valid mappings, so no more data blocks.
+	 * Look for mapped directory blocks at or above the current offset.
+	 * Truncate down to the nearest directory block to start the scanning
+	 * operation.
 	 */
-	if (!mip->map_valid) {
-		*curoff = xfs_dir2_da_to_byte(geo, mip->map_off);
+	last_da = xfs_dir2_byte_to_da(geo, XFS_DIR2_LEAF_OFFSET);
+	map_off = xfs_dir2_db_to_da(geo, xfs_dir2_byte_to_db(geo, *cur_off));
+	if (!xfs_iext_lookup_extent(dp, ifp, map_off, &idx, &map))
 		goto out;
-	}
+	if (map.br_startoff >= last_da)
+		goto out;
+	xfs_trim_extent(&map, map_off, last_da - map_off);
 
-	/*
-	 * Read the directory block starting at the first mapping.
-	 */
-	mip->curdb = xfs_dir2_da_to_db(geo, map->br_startoff);
-	error = xfs_dir3_data_read(NULL, dp, map->br_startoff,
-			map->br_blockcount >= geo->fsbcount ?
-			    XFS_FSB_TO_DADDR(dp->i_mount, map->br_startblock) :
-			    -1, &bp);
-	/*
-	 * Should just skip over the data block instead of giving up.
-	 */
+	/* Read the directory block of that first mapping. */
+	new_off = xfs_dir2_da_to_byte(geo, map.br_startoff);
+	if (new_off > *cur_off)
+		*cur_off = new_off;
+	error = xfs_dir3_data_read(args->trans, dp, map.br_startoff, -1, &bp);
 	if (error)
-		goto out;	/* XXX */
+		goto out;
 
 	/*
-	 * Adjust the current amount of read-ahead: we just read a block that
-	 * was previously ra.
+	 * Start readahead for the next bufsize's worth of dir data blocks.
+	 * We may have already issued readahead for some of that range;
+	 * ra_blk tracks the last block we tried to read(ahead).
 	 */
-	if (mip->ra_current)
-		mip->ra_current -= geo->fsbcount;
+	ra_want = howmany(bufsize + geo->blksize, (1 << geo->fsblog));
+	if (*ra_blk >= last_da)
+		goto out;
+	else if (*ra_blk == 0)
+		*ra_blk = map.br_startoff;
+	next_ra = map.br_startoff + geo->fsbcount;
+	if (next_ra >= last_da)
+		goto out_no_ra;
+	if (map.br_blockcount < geo->fsbcount &&
+	    !xfs_iext_get_extent(ifp, ++idx, &map))
+		goto out_no_ra;
+	if (map.br_startoff >= last_da)
+		goto out_no_ra;
+	xfs_trim_extent(&map, next_ra, last_da - next_ra);
 
-	/*
-	 * Do we need more readahead?
-	 * Each loop tries to process 1 full dir blk; last may be partial.
-	 */
+	/* Start ra for each dir (not fs) block that has a mapping. */
 	blk_start_plug(&plug);
-	for (mip->ra_index = mip->ra_offset = i = 0;
-	     mip->ra_want > mip->ra_current && i < mip->map_blocks;
-	     i += geo->fsbcount) {
-		ASSERT(mip->ra_index < mip->map_valid);
-		/*
-		 * Read-ahead a contiguous directory block.
-		 */
-		if (i > mip->ra_current &&
-		    (map[mip->ra_index].br_blockcount - mip->ra_offset) >=
-		    geo->fsbcount) {
-			xfs_dir3_data_readahead(dp,
-				map[mip->ra_index].br_startoff + mip->ra_offset,
-				XFS_FSB_TO_DADDR(dp->i_mount,
-					map[mip->ra_index].br_startblock +
-							mip->ra_offset));
-			mip->ra_current = i;
-		}
-
-		/*
-		 * Read-ahead a non-contiguous directory block.  This doesn't
-		 * use our mapping, but this is a very rare case.
-		 */
-		else if (i > mip->ra_current) {
-			xfs_dir3_data_readahead(dp,
-					map[mip->ra_index].br_startoff +
-							mip->ra_offset, -1);
-			mip->ra_current = i;
-		}
-
-		/*
-		 * Advance offset through the mapping table, processing a full
-		 * dir block even if it is fragmented into several extents.
-		 * But stop if we have consumed all valid mappings, even if
-		 * it's not yet a full directory block.
-		 */
-		for (j = 0;
-		     j < geo->fsbcount && mip->ra_index < mip->map_valid;
-		     j += length ) {
-			/*
-			 * The rest of this extent but not more than a dir
-			 * block.
-			 */
-			length = min_t(int, geo->fsbcount - j,
-					map[mip->ra_index].br_blockcount -
-							mip->ra_offset);
-			mip->ra_offset += length;
-
-			/*
-			 * Advance to the next mapping if this one is used up.
-			 */
-			if (mip->ra_offset == map[mip->ra_index].br_blockcount) {
-				mip->ra_offset = 0;
-				mip->ra_index++;
+	while (ra_want > 0) {
+		next_ra = roundup((xfs_dablk_t)map.br_startoff, geo->fsbcount);
+		while (ra_want > 0 &&
+		       next_ra < map.br_startoff + map.br_blockcount) {
+			if (next_ra >= last_da) {
+				*ra_blk = last_da;
+				break;
 			}
+			if (next_ra > *ra_blk) {
+				xfs_dir3_data_readahead(dp, next_ra, -2);
+				*ra_blk = next_ra;
+			}
+			ra_want -= geo->fsbcount;
+			next_ra += geo->fsbcount;
+		}
+		if (!xfs_iext_get_extent(ifp, ++idx, &map)) {
+			*ra_blk = last_da;
+			break;
 		}
 	}
 	blk_finish_plug(&plug);
···
 out:
 	*bpp = bp;
 	return error;
+out_no_ra:
+	*ra_blk = last_da;
+	goto out;
 }
 
 /*
···
 	xfs_dir2_data_hdr_t	*hdr;		/* data block header */
 	xfs_dir2_data_entry_t	*dep;		/* data entry */
 	xfs_dir2_data_unused_t	*dup;		/* unused entry */
-	int			error = 0;	/* error return value */
+	char			*ptr = NULL;	/* pointer to current data */
+	struct xfs_da_geometry	*geo = args->geo;
+	xfs_dablk_t		rablk = 0;	/* current readahead block */
+	xfs_dir2_off_t		curoff;		/* current overall offset */
 	int			length;		/* temporary length value */
 	int			byteoff;	/* offset in current block */
-	xfs_dir2_off_t		curoff;		/* current overall offset */
-	xfs_dir2_off_t		newoff;		/* new curoff after new blk */
-	char			*ptr = NULL;	/* pointer to current data */
-	struct xfs_dir2_leaf_map_info *map_info;
-	struct xfs_da_geometry	*geo = args->geo;
+	int			lock_mode;
+	int			error = 0;	/* error return value */
 
 	/*
 	 * If the offset is at or past the largest allowed value,
···
 		return 0;
 
 	/*
-	 * Set up to bmap a number of blocks based on the caller's
-	 * buffer size, the directory block size, and the filesystem
-	 * block size.
-	 */
-	length = howmany(bufsize + geo->blksize, (1 << geo->fsblog));
-	map_info = kmem_zalloc(offsetof(struct xfs_dir2_leaf_map_info, map) +
-				(length * sizeof(struct xfs_bmbt_irec)),
-			       KM_SLEEP | KM_NOFS);
-	map_info->map_size = length;
-
-	/*
 	 * Inside the loop we keep the main offset value as a byte offset
 	 * in the directory file.
 	 */
 	curoff = xfs_dir2_dataptr_to_byte(ctx->pos);
 
 	/*
-	 * Force this conversion through db so we truncate the offset
-	 * down to get the start of the data block.
-	 */
-	map_info->map_off = xfs_dir2_db_to_da(geo,
-					      xfs_dir2_byte_to_db(geo, curoff));
-
-	/*
 	 * Loop over directory entries until we reach the end offset.
 	 * Get more blocks and readahead as necessary.
 	 */
 	while (curoff < XFS_DIR2_LEAF_OFFSET) {
-		__uint8_t filetype;
+		uint8_t filetype;
 
 		/*
 		 * If we have no buffer, or we're off the end of the
 		 * current buffer, need to get another one.
 		 */
 		if (!bp || ptr >= (char *)bp->b_addr + geo->blksize) {
-			int	lock_mode;
-			bool	trim_map = false;
-
 			if (bp) {
-				xfs_trans_brelse(NULL, bp);
+				xfs_trans_brelse(args->trans, bp);
 				bp = NULL;
-				trim_map = true;
 			}
 
 			lock_mode = xfs_ilock_data_map_shared(dp);
-			error = xfs_dir2_leaf_readbuf(args, bufsize, map_info,
-						      &curoff, &bp, trim_map);
+			error = xfs_dir2_leaf_readbuf(args, bufsize, &curoff,
+					&rablk, &bp);
 			xfs_iunlock(dp, lock_mode);
-			if (error || !map_info->map_valid)
+			if (error || !bp)
 				break;
 
-			/*
-			 * Having done a read, we need to set a new offset.
-			 */
-			newoff = xfs_dir2_db_off_to_byte(geo,
-							 map_info->curdb, 0);
-			/*
-			 * Start of the current block.
-			 */
-			if (curoff < newoff)
-				curoff = newoff;
-			/*
-			 * Make sure we're in the right block.
-			 */
-			else if (curoff > newoff)
-				ASSERT(xfs_dir2_byte_to_db(geo, curoff) ==
-				       map_info->curdb);
 			hdr = bp->b_addr;
 			xfs_dir3_data_check(dp, bp);
 			/*
···
 		ctx->pos = XFS_DIR2_MAX_DATAPTR & 0x7fffffff;
 	else
 		ctx->pos = xfs_dir2_byte_to_dataptr(curoff) & 0x7fffffff;
-	kmem_free(map_info);
 	if (bp)
-		xfs_trans_brelse(NULL, bp);
+		xfs_trans_brelse(args->trans, bp);
 	return error;
 }
 
 /*
  * Read a directory.
+ *
+ * If supplied, the transaction collects locked dir buffers to avoid
+ * nested buffer deadlocks.  This function does not dirty the
+ * transaction.  The caller should ensure that the inode is locked
+ * before calling this function.
  */
 int
 xfs_readdir(
+	struct xfs_trans	*tp,
 	struct xfs_inode	*dp,
 	struct dir_context	*ctx,
 	size_t			bufsize)
···
 
 	args.dp = dp;
 	args.geo = dp->i_mount->m_dir_geo;
+	args.trans = tp;
 
 	if (dp->i_d.di_format == XFS_DINODE_FMT_LOCAL)
 		rval = xfs_dir2_sf_getdents(&args, ctx);

fs/xfs/xfs_discard.c

···
 	xfs_daddr_t		start,
 	xfs_daddr_t		end,
 	xfs_daddr_t		minlen,
-	__uint64_t		*blocks_trimmed)
+	uint64_t		*blocks_trimmed)
 {
 	struct block_device	*bdev = mp->m_ddev_targp->bt_bdev;
 	struct xfs_btree_cur	*cur;
···
 	struct fstrim_range	range;
 	xfs_daddr_t		start, end, minlen;
 	xfs_agnumber_t		start_agno, end_agno, agno;
-	__uint64_t		blocks_trimmed = 0;
+	uint64_t		blocks_trimmed = 0;
 	int			error, last_error = 0;
 
 	if (!capable(CAP_SYS_ADMIN))

fs/xfs/xfs_dquot.c

···
 void
 xfs_dquot_set_prealloc_limits(struct xfs_dquot *dqp)
 {
-	__uint64_t space;
+	uint64_t space;
 
 	dqp->q_prealloc_hi_wmark = be64_to_cpu(dqp->q_core.d_blk_hardlimit);
 	dqp->q_prealloc_lo_wmark = be64_to_cpu(dqp->q_core.d_blk_softlimit);
···
 	struct xfs_mount	*mp = dqp->q_mount;
 	xfs_dqid_t		id = be32_to_cpu(dqp->q_core.d_id);
 	struct xfs_trans	*tp = (tpp ? *tpp : NULL);
-	uint			lock_mode;
+	uint			lock_mode = 0;
 
 	quotip = xfs_quota_inode(dqp->q_mount, dqp->dq_flags);
 	dqp->q_fileoffset = (xfs_fileoff_t)id / mp->m_quotainfo->qi_dqperchunk;
 
-	lock_mode = xfs_ilock_data_map_shared(quotip);
+	ASSERT(!(flags & XFS_QMOPT_NOLOCK) ||
+		xfs_isilocked(quotip, XFS_ILOCK_SHARED) ||
+		xfs_isilocked(quotip, XFS_ILOCK_EXCL));
+	if (!(flags & XFS_QMOPT_NOLOCK))
+		lock_mode = xfs_ilock_data_map_shared(quotip);
 	if (!xfs_this_quota_on(dqp->q_mount, dqp->dq_flags)) {
 		/*
 		 * Return if this type of quotas is turned off while we
 		 * didn't have the quota inode lock.
 		 */
-		xfs_iunlock(quotip, lock_mode);
+		if (lock_mode)
+			xfs_iunlock(quotip, lock_mode);
 		return -ESRCH;
 	}
 
···
 	error = xfs_bmapi_read(quotip, dqp->q_fileoffset,
 			       XFS_DQUOT_CLUSTER_SIZE_FSB, &map, &nmaps, 0);
 
-	xfs_iunlock(quotip, lock_mode);
+	if (lock_mode)
+		xfs_iunlock(quotip, lock_mode);
 	if (error)
 		return error;
 
···
  */
 static int
 xfs_dq_get_next_id(
-	xfs_mount_t		*mp,
+	struct xfs_mount	*mp,
 	uint			type,
-	xfs_dqid_t		*id,
-	loff_t			eof)
+	xfs_dqid_t		*id)
 {
-	struct xfs_inode	*quotip;
+	struct xfs_inode	*quotip = xfs_quota_inode(mp, type);
+	xfs_dqid_t		next_id = *id + 1; /* simple advance */
+	uint			lock_flags;
+	struct xfs_bmbt_irec	got;
+	xfs_extnum_t		idx;
 	xfs_fsblock_t		start;
-	loff_t			offset;
-	uint			lock;
-	xfs_dqid_t		next_id;
 	int			error = 0;
-
-	/* Simple advance */
-	next_id = *id + 1;
 
 	/* If we'd wrap past the max ID, stop */
 	if (next_id < *id)
···
 	/* Nope, next_id is now past the current chunk, so find the next one */
 	start = (xfs_fsblock_t)next_id / mp->m_quotainfo->qi_dqperchunk;
 
-	quotip = xfs_quota_inode(mp, type);
-	lock = xfs_ilock_data_map_shared(quotip);
+	lock_flags = xfs_ilock_data_map_shared(quotip);
+	if (!(quotip->i_df.if_flags & XFS_IFEXTENTS)) {
+		error = xfs_iread_extents(NULL, quotip, XFS_DATA_FORK);
+		if (error)
+			return error;
+	}
 
-	offset = __xfs_seek_hole_data(VFS_I(quotip), XFS_FSB_TO_B(mp, start),
-				      eof, SEEK_DATA);
-	if (offset < 0)
-		error = offset;
+	if (xfs_iext_lookup_extent(quotip, &quotip->i_df, start, &idx, &got)) {
+		/* contiguous chunk, bump startoff for the id calculation */
+		if (got.br_startoff < start)
+			got.br_startoff = start;
+		*id = got.br_startoff * mp->m_quotainfo->qi_dqperchunk;
+	} else {
+		error = -ENOENT;
+	}
 
-	xfs_iunlock(quotip, lock);
+	xfs_iunlock(quotip, lock_flags);
 
-	/* -ENXIO is essentially "no more data" */
-	if (error)
-		return (error == -ENXIO ? -ENOENT: error);
-
-	/* Convert next data offset back to a quota id */
-	*id = XFS_B_TO_FSB(mp, offset) * mp->m_quotainfo->qi_dqperchunk;
-	return 0;
+	return error;
 }
 
 /*
···
 	struct xfs_quotainfo	*qi = mp->m_quotainfo;
 	struct radix_tree_root *tree = xfs_dquot_tree(qi, type);
 	struct xfs_dquot	*dqp;
-	loff_t			eof = 0;
 	int			error;
 
 	ASSERT(XFS_IS_QUOTA_RUNNING(mp));
···
 	}
 #endif
 
-	/* Get the end of the quota file if we need it */
-	if (flags & XFS_QMOPT_DQNEXT) {
-		struct xfs_inode	*quotip;
-		xfs_fileoff_t		last;
-		uint			lock_mode;
-
-		quotip = xfs_quota_inode(mp, type);
-		lock_mode = xfs_ilock_data_map_shared(quotip);
-		error = xfs_bmap_last_offset(quotip, &last, XFS_DATA_FORK);
-		xfs_iunlock(quotip, lock_mode);
-		if (error)
-			return error;
-		eof = XFS_FSB_TO_B(mp, last);
-	}
-
 restart:
 	mutex_lock(&qi->qi_tree_lock);
 	dqp = radix_tree_lookup(tree, id);
···
 			if (XFS_IS_DQUOT_UNINITIALIZED(dqp)) {
 				xfs_dqunlock(dqp);
 				mutex_unlock(&qi->qi_tree_lock);
-				error = xfs_dq_get_next_id(mp, type, &id, eof);
+				error = xfs_dq_get_next_id(mp, type, &id);
 				if (error)
 					return error;
 				goto restart;
···
 
 	/* If we are asked to find next active id, keep looking */
 	if (error == -ENOENT && (flags & XFS_QMOPT_DQNEXT)) {
-		error = xfs_dq_get_next_id(mp, type, &id, eof);
+		error = xfs_dq_get_next_id(mp, type, &id);
 		if (!error)
 			goto restart;
 	}
···
 	if (flags & XFS_QMOPT_DQNEXT) {
 		if (XFS_IS_DQUOT_UNINITIALIZED(dqp)) {
 			xfs_qm_dqput(dqp);
-			error = xfs_dq_get_next_id(mp, type, &id, eof);
+			error = xfs_dq_get_next_id(mp, type, &id);
 			if (error)
 				return error;
 			goto restart;

fs/xfs/xfs_error.c

···
 #include "xfs_trans_resv.h"
 #include "xfs_mount.h"
 #include "xfs_error.h"
+#include "xfs_sysfs.h"
 
 #ifdef DEBUG
 
-int	xfs_etest[XFS_NUM_INJECT_ERROR];
-int64_t	xfs_etest_fsid[XFS_NUM_INJECT_ERROR];
-char *	xfs_etest_fsname[XFS_NUM_INJECT_ERROR];
-int	xfs_error_test_active;
+static unsigned int xfs_errortag_random_default[] = {
+	XFS_RANDOM_DEFAULT,
+	XFS_RANDOM_IFLUSH_1,
+	XFS_RANDOM_IFLUSH_2,
+	XFS_RANDOM_IFLUSH_3,
+	XFS_RANDOM_IFLUSH_4,
+	XFS_RANDOM_IFLUSH_5,
+	XFS_RANDOM_IFLUSH_6,
+	XFS_RANDOM_DA_READ_BUF,
+	XFS_RANDOM_BTREE_CHECK_LBLOCK,
+	XFS_RANDOM_BTREE_CHECK_SBLOCK,
+	XFS_RANDOM_ALLOC_READ_AGF,
+	XFS_RANDOM_IALLOC_READ_AGI,
+	XFS_RANDOM_ITOBP_INOTOBP,
+	XFS_RANDOM_IUNLINK,
+	XFS_RANDOM_IUNLINK_REMOVE,
+	XFS_RANDOM_DIR_INO_VALIDATE,
+	XFS_RANDOM_BULKSTAT_READ_CHUNK,
+	XFS_RANDOM_IODONE_IOERR,
+	XFS_RANDOM_STRATREAD_IOERR,
+	XFS_RANDOM_STRATCMPL_IOERR,
+	XFS_RANDOM_DIOWRITE_IOERR,
+	XFS_RANDOM_BMAPIFORMAT,
+	XFS_RANDOM_FREE_EXTENT,
+	XFS_RANDOM_RMAP_FINISH_ONE,
+	XFS_RANDOM_REFCOUNT_CONTINUE_UPDATE,
+	XFS_RANDOM_REFCOUNT_FINISH_ONE,
+	XFS_RANDOM_BMAP_FINISH_ONE,
+	XFS_RANDOM_AG_RESV_CRITICAL,
+	XFS_RANDOM_DROP_WRITES,
+	XFS_RANDOM_LOG_BAD_CRC,
+};
 
-int
-xfs_error_test(int error_tag, int *fsidp, char *expression,
-	       int line, char *file, unsigned long randfactor)
+struct xfs_errortag_attr {
+	struct attribute	attr;
+	unsigned int		tag;
+};
+
+static inline struct xfs_errortag_attr *
+to_attr(struct attribute *attr)
 {
-	int i;
-	int64_t fsid;
+	return container_of(attr, struct xfs_errortag_attr, attr);
+}
 
-	if (prandom_u32() % randfactor)
-		return 0;
+static inline struct xfs_mount *
+to_mp(struct kobject *kobject)
+{
+	struct xfs_kobj *kobj = to_kobj(kobject);
 
-	memcpy(&fsid, fsidp, sizeof(xfs_fsid_t));
+	return container_of(kobj, struct xfs_mount, m_errortag_kobj);
+}
 
-	for (i = 0; i < XFS_NUM_INJECT_ERROR; i++)  {
-		if (xfs_etest[i] == error_tag && xfs_etest_fsid[i] == fsid) {
-			xfs_warn(NULL,
-	"Injecting error (%s) at file %s, line %d, on filesystem \"%s\"",
-				expression, file, line, xfs_etest_fsname[i]);
-			return 1;
-		}
+STATIC ssize_t
+xfs_errortag_attr_store(
+	struct kobject		*kobject,
+	struct attribute	*attr,
+	const char		*buf,
+	size_t			count)
+{
+	struct xfs_mount	*mp = to_mp(kobject);
+	struct xfs_errortag_attr *xfs_attr = to_attr(attr);
+	int			ret;
+	unsigned int		val;
+
+	if (strcmp(buf, "default") == 0) {
+		val = xfs_errortag_random_default[xfs_attr->tag];
+	} else {
+		ret = kstrtouint(buf, 0, &val);
+		if (ret)
+			return ret;
 	}
 
+	ret = xfs_errortag_set(mp, xfs_attr->tag, val);
+	if (ret)
+		return ret;
+	return count;
+}
+
+STATIC ssize_t
+xfs_errortag_attr_show(
+	struct kobject		*kobject,
+	struct attribute	*attr,
+	char			*buf)
+{
+	struct xfs_mount	*mp = to_mp(kobject);
+	struct xfs_errortag_attr *xfs_attr = to_attr(attr);
+
+	return snprintf(buf, PAGE_SIZE, "%u\n",
+			xfs_errortag_get(mp, xfs_attr->tag));
+}
+
+static const struct sysfs_ops xfs_errortag_sysfs_ops = {
+	.show = xfs_errortag_attr_show,
+	.store = xfs_errortag_attr_store,
+};
+
+#define XFS_ERRORTAG_ATTR_RW(_name, _tag) \
+static struct xfs_errortag_attr xfs_errortag_attr_##_name = {		\
+	.attr = {.name = __stringify(_name),				\
+		 .mode = VERIFY_OCTAL_PERMISSIONS(S_IWUSR | S_IRUGO) },	\
+	.tag	= (_tag),						\
+}
+
+#define XFS_ERRORTAG_ATTR_LIST(_name) &xfs_errortag_attr_##_name.attr
+
+XFS_ERRORTAG_ATTR_RW(noerror,		XFS_ERRTAG_NOERROR);
+XFS_ERRORTAG_ATTR_RW(iflush1,		XFS_ERRTAG_IFLUSH_1);
+XFS_ERRORTAG_ATTR_RW(iflush2,		XFS_ERRTAG_IFLUSH_2);
+XFS_ERRORTAG_ATTR_RW(iflush3,		XFS_ERRTAG_IFLUSH_3);
+XFS_ERRORTAG_ATTR_RW(iflush4,		XFS_ERRTAG_IFLUSH_4);
+XFS_ERRORTAG_ATTR_RW(iflush5,		XFS_ERRTAG_IFLUSH_5);
+XFS_ERRORTAG_ATTR_RW(iflush6,		XFS_ERRTAG_IFLUSH_6);
+XFS_ERRORTAG_ATTR_RW(dareadbuf,		XFS_ERRTAG_DA_READ_BUF);
+XFS_ERRORTAG_ATTR_RW(btree_chk_lblk,	XFS_ERRTAG_BTREE_CHECK_LBLOCK);
+XFS_ERRORTAG_ATTR_RW(btree_chk_sblk,	XFS_ERRTAG_BTREE_CHECK_SBLOCK);
+XFS_ERRORTAG_ATTR_RW(readagf,		XFS_ERRTAG_ALLOC_READ_AGF);
+XFS_ERRORTAG_ATTR_RW(readagi,		XFS_ERRTAG_IALLOC_READ_AGI);
+XFS_ERRORTAG_ATTR_RW(itobp,		XFS_ERRTAG_ITOBP_INOTOBP);
+XFS_ERRORTAG_ATTR_RW(iunlink,		XFS_ERRTAG_IUNLINK);
+XFS_ERRORTAG_ATTR_RW(iunlinkrm,		XFS_ERRTAG_IUNLINK_REMOVE);
+XFS_ERRORTAG_ATTR_RW(dirinovalid,	XFS_ERRTAG_DIR_INO_VALIDATE);
+XFS_ERRORTAG_ATTR_RW(bulkstat,		XFS_ERRTAG_BULKSTAT_READ_CHUNK);
+XFS_ERRORTAG_ATTR_RW(logiodone,		XFS_ERRTAG_IODONE_IOERR);
+XFS_ERRORTAG_ATTR_RW(stratread,		XFS_ERRTAG_STRATREAD_IOERR);
+XFS_ERRORTAG_ATTR_RW(stratcmpl,		XFS_ERRTAG_STRATCMPL_IOERR);
+XFS_ERRORTAG_ATTR_RW(diowrite,		XFS_ERRTAG_DIOWRITE_IOERR);
+XFS_ERRORTAG_ATTR_RW(bmapifmt,		XFS_ERRTAG_BMAPIFORMAT);
+XFS_ERRORTAG_ATTR_RW(free_extent,	XFS_ERRTAG_FREE_EXTENT);
+XFS_ERRORTAG_ATTR_RW(rmap_finish_one,	XFS_ERRTAG_RMAP_FINISH_ONE);
+XFS_ERRORTAG_ATTR_RW(refcount_continue_update,	XFS_ERRTAG_REFCOUNT_CONTINUE_UPDATE);
+XFS_ERRORTAG_ATTR_RW(refcount_finish_one,	XFS_ERRTAG_REFCOUNT_FINISH_ONE);
+XFS_ERRORTAG_ATTR_RW(bmap_finish_one,	XFS_ERRTAG_BMAP_FINISH_ONE);
+XFS_ERRORTAG_ATTR_RW(ag_resv_critical,	XFS_ERRTAG_AG_RESV_CRITICAL);
+XFS_ERRORTAG_ATTR_RW(drop_writes,	XFS_ERRTAG_DROP_WRITES);
+XFS_ERRORTAG_ATTR_RW(log_bad_crc,	XFS_ERRTAG_LOG_BAD_CRC);
+
+static struct attribute *xfs_errortag_attrs[] = {
+	XFS_ERRORTAG_ATTR_LIST(noerror),
+	XFS_ERRORTAG_ATTR_LIST(iflush1),
+	XFS_ERRORTAG_ATTR_LIST(iflush2),
+	XFS_ERRORTAG_ATTR_LIST(iflush3),
+	XFS_ERRORTAG_ATTR_LIST(iflush4),
+	XFS_ERRORTAG_ATTR_LIST(iflush5),
+	XFS_ERRORTAG_ATTR_LIST(iflush6),
+	XFS_ERRORTAG_ATTR_LIST(dareadbuf),
+	XFS_ERRORTAG_ATTR_LIST(btree_chk_lblk),
+	XFS_ERRORTAG_ATTR_LIST(btree_chk_sblk),
+	XFS_ERRORTAG_ATTR_LIST(readagf),
+	XFS_ERRORTAG_ATTR_LIST(readagi),
+	XFS_ERRORTAG_ATTR_LIST(itobp),
+	XFS_ERRORTAG_ATTR_LIST(iunlink),
+	XFS_ERRORTAG_ATTR_LIST(iunlinkrm),
+	XFS_ERRORTAG_ATTR_LIST(dirinovalid),
+	XFS_ERRORTAG_ATTR_LIST(bulkstat),
+	XFS_ERRORTAG_ATTR_LIST(logiodone),
+	XFS_ERRORTAG_ATTR_LIST(stratread),
+	XFS_ERRORTAG_ATTR_LIST(stratcmpl),
+	XFS_ERRORTAG_ATTR_LIST(diowrite),
+	XFS_ERRORTAG_ATTR_LIST(bmapifmt),
+	XFS_ERRORTAG_ATTR_LIST(free_extent),
+	XFS_ERRORTAG_ATTR_LIST(rmap_finish_one),
+	XFS_ERRORTAG_ATTR_LIST(refcount_continue_update),
+	XFS_ERRORTAG_ATTR_LIST(refcount_finish_one),
+	XFS_ERRORTAG_ATTR_LIST(bmap_finish_one),
+	XFS_ERRORTAG_ATTR_LIST(ag_resv_critical),
+	XFS_ERRORTAG_ATTR_LIST(drop_writes),
+	XFS_ERRORTAG_ATTR_LIST(log_bad_crc),
+	NULL,
+};
+
+struct kobj_type xfs_errortag_ktype = {
+	.release = xfs_sysfs_release,
+	.sysfs_ops = &xfs_errortag_sysfs_ops,
+	.default_attrs = xfs_errortag_attrs,
+};
+
+int
+xfs_errortag_init(
+	struct xfs_mount	*mp)
+{
+	mp->m_errortag = kmem_zalloc(sizeof(unsigned int) * XFS_ERRTAG_MAX,
+			KM_SLEEP | KM_MAYFAIL);
+	if (!mp->m_errortag)
+		return -ENOMEM;
+
+	return xfs_sysfs_init(&mp->m_errortag_kobj, &xfs_errortag_ktype,
+			       &mp->m_kobj, "errortag");
+}
+
+void
+xfs_errortag_del(
+	struct xfs_mount	*mp)
+{
+	xfs_sysfs_del(&mp->m_errortag_kobj);
+	kmem_free(mp->m_errortag);
+}
+
+bool
+xfs_errortag_test(
+	struct xfs_mount	*mp,
+	const char		*expression,
+	const char		*file,
+	int			line,
+	unsigned int		error_tag)
+{
+	unsigned int		randfactor;
+
+	/*
+	 * To be able to use error injection anywhere, we need to ensure error
+	 * injection mechanism is already initialized.
+	 *
+	 * Code paths like I/O completion can be called before the
+	 * initialization is complete, but be able to inject errors in such
+	 * places is still useful.
+	 */
+	if (!mp->m_errortag)
+		return false;
+
+	ASSERT(error_tag < XFS_ERRTAG_MAX);
+	randfactor = mp->m_errortag[error_tag];
+	if (!randfactor || prandom_u32() % randfactor)
+		return false;
+
+	xfs_warn_ratelimited(mp,
+"Injecting error (%s) at file %s, line %d, on filesystem \"%s\"",
+			expression, file, line, mp->m_fsname);
+	return true;
+}
+
+int
+xfs_errortag_get(
+	struct xfs_mount	*mp,
+	unsigned int		error_tag)
+{
+	if (error_tag >= XFS_ERRTAG_MAX)
+		return -EINVAL;
+
+	return mp->m_errortag[error_tag];
+}
+
+int
+xfs_errortag_set(
+	struct xfs_mount	*mp,
+	unsigned int		error_tag,
+	unsigned int		tag_value)
+{
+	if (error_tag >= XFS_ERRTAG_MAX)
+		return -EINVAL;
+
+	mp->m_errortag[error_tag] = tag_value;
 	return 0;
 }
 
 int
-xfs_errortag_add(unsigned int error_tag, xfs_mount_t *mp)
+xfs_errortag_add(
+	struct xfs_mount	*mp,
+	unsigned int		error_tag)
 {
-	int i;
-	int len;
-	int64_t fsid;
-
 	if (error_tag >= XFS_ERRTAG_MAX)
 		return -EINVAL;
 
-	memcpy(&fsid, mp->m_fixedfsid, sizeof(xfs_fsid_t));
-
-	for (i = 0; i < XFS_NUM_INJECT_ERROR; i++)  {
-		if (xfs_etest_fsid[i] == fsid && xfs_etest[i] == error_tag) {
-			xfs_warn(mp, "error tag #%d on", error_tag);
-			return 0;
-		}
-	}
-
-	for (i = 0; i < XFS_NUM_INJECT_ERROR; i++)  {
-		if (xfs_etest[i] == 0) {
-			xfs_warn(mp, "Turned on XFS error tag #%d",
-				error_tag);
-			xfs_etest[i] = error_tag;
-			xfs_etest_fsid[i] = fsid;
-			len = strlen(mp->m_fsname);
-			xfs_etest_fsname[i] = kmem_alloc(len + 1, KM_SLEEP);
-			strcpy(xfs_etest_fsname[i], mp->m_fsname);
-			xfs_error_test_active++;
-			return 0;
-		}
-	}
-
-	xfs_warn(mp, "error tag overflow, too many turned on");
-
-	return 1;
+	return xfs_errortag_set(mp, error_tag,
+			xfs_errortag_random_default[error_tag]);
 }
 
 int
-xfs_errortag_clearall(xfs_mount_t *mp, int loud)
+xfs_errortag_clearall(
+	struct xfs_mount	*mp)
 {
-	int64_t fsid;
-	int cleared = 0;
-	int i;
-
-	memcpy(&fsid, mp->m_fixedfsid, sizeof(xfs_fsid_t));
-
-
-	for (i = 0; i < XFS_NUM_INJECT_ERROR; i++) {
-		if ((fsid == 0LL || xfs_etest_fsid[i] == fsid) &&
-		     xfs_etest[i] != 0) {
-			cleared = 1;
-			xfs_warn(mp, "Clearing XFS error tag #%d",
-				xfs_etest[i]);
-			xfs_etest[i] = 0;
-			xfs_etest_fsid[i] = 0LL;
-			kmem_free(xfs_etest_fsname[i]);
-			xfs_etest_fsname[i] = NULL;
-			xfs_error_test_active--;
-		}
-	}
-
-	if (loud || cleared)
-		xfs_warn(mp, "Cleared all XFS error tags for filesystem");
-
+	memset(mp->m_errortag, 0, sizeof(unsigned int) * XFS_ERRTAG_MAX);
 	return 0;
 }
 #endif /* DEBUG */

fs/xfs/xfs_error.h

···
 #define XFS_ERRTAG_REFCOUNT_FINISH_ONE			25
 #define XFS_ERRTAG_BMAP_FINISH_ONE			26
 #define XFS_ERRTAG_AG_RESV_CRITICAL			27
-#define XFS_ERRTAG_MAX					28
+/*
+ * DEBUG mode instrumentation to test and/or trigger delayed allocation
+ * block killing in the event of failed writes. When enabled, all
+ * buffered writes are silenty dropped and handled as if they failed.
+ * All delalloc blocks in the range of the write (including pre-existing
+ * delalloc blocks!) are tossed as part of the write failure error
+ * handling sequence.
+ */
+#define XFS_ERRTAG_DROP_WRITES				28
+#define XFS_ERRTAG_LOG_BAD_CRC				29
+#define XFS_ERRTAG_MAX					30
 
 /*
  * Random factors for above tags, 1 means always, 2 means 1/2 time, etc.
···
 #define XFS_RANDOM_REFCOUNT_FINISH_ONE			1
 #define XFS_RANDOM_BMAP_FINISH_ONE			1
 #define XFS_RANDOM_AG_RESV_CRITICAL			4
+#define XFS_RANDOM_DROP_WRITES				1
+#define XFS_RANDOM_LOG_BAD_CRC				1
 
 #ifdef DEBUG
-extern int xfs_error_test_active;
-extern int xfs_error_test(int, int *, char *, int, char *, unsigned long);
+extern int xfs_errortag_init(struct xfs_mount *mp);
+extern void xfs_errortag_del(struct xfs_mount *mp);
+extern bool xfs_errortag_test(struct xfs_mount *mp, const char *expression,
+		const char *file, int line, unsigned int error_tag);
+#define XFS_TEST_ERROR(expr, mp, tag)		\
+	((expr) || xfs_errortag_test((mp), #expr, __FILE__, __LINE__, (tag)))
 
-#define	XFS_NUM_INJECT_ERROR				10
-#define XFS_TEST_ERROR(expr, mp, tag, rf)		\
-	((expr) || (xfs_error_test_active && \
-	 xfs_error_test((tag), (mp)->m_fixedfsid, "expr", __LINE__, __FILE__, \
-			(rf))))
-
-extern int xfs_errortag_add(unsigned int error_tag, struct xfs_mount *mp);
-extern int xfs_errortag_clearall(struct xfs_mount *mp, int loud);
+extern int xfs_errortag_get(struct xfs_mount *mp, unsigned int error_tag);
+extern int xfs_errortag_set(struct xfs_mount *mp, unsigned int error_tag,
+		unsigned int tag_value);
+extern int xfs_errortag_add(struct xfs_mount *mp, unsigned int error_tag);
+extern int xfs_errortag_clearall(struct xfs_mount *mp);
 #else
-#define XFS_TEST_ERROR(expr, mp, tag, rf)	(expr)
-#define xfs_errortag_add(tag, mp)		(ENOSYS)
-#define xfs_errortag_clearall(mp, loud)		(ENOSYS)
+#define xfs_errortag_init(mp)			(0)
+#define xfs_errortag_del(mp)
+#define XFS_TEST_ERROR(expr, mp, tag)		(expr)
+#define xfs_errortag_set(mp, tag, val)		(ENOSYS)
+#define xfs_errortag_add(mp, tag)		(ENOSYS)
+#define xfs_errortag_clearall(mp)		(ENOSYS)
 #endif /* DEBUG */
 
 /*

fs/xfs/xfs_file.c

···
 		xfs_iunlock(ip, iolock);
 		eofb.eof_flags = XFS_EOF_FLAGS_SYNC;
 		xfs_icache_free_eofblocks(ip->i_mount, &eofb);
+		xfs_icache_free_cowblocks(ip->i_mount, &eofb);
 		goto write_retry;
 	}
 
···
 	 */
 	bufsize = (size_t)min_t(loff_t, 32768, ip->i_d.di_size);
 
-	return xfs_readdir(ip, ctx, bufsize);
-}
-
-/*
- * This type is designed to indicate the type of offset we would like
- * to search from page cache for xfs_seek_hole_data().
- */
-enum {
-	HOLE_OFF = 0,
-	DATA_OFF,
-};
-
-/*
- * Lookup the desired type of offset from the given page.
- *
- * On success, return true and the offset argument will point to the
- * start of the region that was found.  Otherwise this function will
- * return false and keep the offset argument unchanged.
- */
-STATIC bool
-xfs_lookup_buffer_offset(
-	struct page		*page,
-	loff_t			*offset,
-	unsigned int		type)
-{
-	loff_t			lastoff = page_offset(page);
-	bool			found = false;
-	struct buffer_head	*bh, *head;
-
-	bh = head = page_buffers(page);
-	do {
-		/*
-		 * Unwritten extents that have data in the page
-		 * cache covering them can be identified by the
-		 * BH_Unwritten state flag.  Pages with multiple
-		 * buffers might have a mix of holes, data and
-		 * unwritten extents - any buffer with valid
-		 * data in it should have BH_Uptodate flag set
-		 * on it.
-		 */
-		if (buffer_unwritten(bh) ||
-		    buffer_uptodate(bh)) {
-			if (type == DATA_OFF)
-				found = true;
-		} else {
-			if (type == HOLE_OFF)
-				found = true;
-		}
-
-		if (found) {
-			*offset = lastoff;
-			break;
-		}
-		lastoff += bh->b_size;
-	} while ((bh = bh->b_this_page) != head);
-
-	return found;
-}
-
-/*
- * This routine is called to find out and return a data or hole offset
- * from the page cache for unwritten extents according to the desired
- * type for xfs_seek_hole_data().
- *
- * The argument offset is used to tell where we start to search from the
- * page cache.  Map is used to figure out the end points of the range to
- * lookup pages.
- *
- * Return true if the desired type of offset was found, and the argument
- * offset is filled with that address.  Otherwise, return false and keep
- * offset unchanged.
- */
-STATIC bool
-xfs_find_get_desired_pgoff(
-	struct inode		*inode,
-	struct xfs_bmbt_irec	*map,
-	unsigned int		type,
-	loff_t			*offset)
-{
-	struct xfs_inode	*ip = XFS_I(inode);
-	struct xfs_mount	*mp = ip->i_mount;
-	struct pagevec		pvec;
-	pgoff_t			index;
-	pgoff_t			end;
-	loff_t			endoff;
-	loff_t			startoff = *offset;
-	loff_t			lastoff = startoff;
-	bool			found = false;
-
-	pagevec_init(&pvec, 0);
-
-	index = startoff >> PAGE_SHIFT;
-	endoff = XFS_FSB_TO_B(mp, map->br_startoff + map->br_blockcount);
-	end = (endoff - 1) >> PAGE_SHIFT;
-	do {
-		int		want;
-		unsigned	nr_pages;
-		unsigned int	i;
-
-		want = min_t(pgoff_t, end - index, PAGEVEC_SIZE - 1) + 1;
-		nr_pages = pagevec_lookup(&pvec, inode->i_mapping, index,
-					  want);
-		if (nr_pages == 0)
-			break;
-
-		for (i = 0; i < nr_pages; i++) {
-			struct page	*page = pvec.pages[i];
-			loff_t		b_offset;
-
-			/*
-			 * At this point, the page may be truncated or
-			 * invalidated (changing page->mapping to NULL),
-			 * or even swizzled back from swapper_space to tmpfs
-			 * file mapping. However, page->index will not change
-			 * because we have a reference on the page.
-			 *
-			 * If current page offset is beyond where we've ended,
-			 * we've found a hole.
-			 */
-			if (type == HOLE_OFF && lastoff < endoff &&
-			    lastoff < page_offset(pvec.pages[i])) {
-				found = true;
-				*offset = lastoff;
-				goto out;
-			}
-			/* Searching done if the page index is out of range. */
-			if (page->index > end)
-				goto out;
-
-			lock_page(page);
-			/*
-			 * Page truncated or invalidated(page->mapping == NULL).
-			 * We can freely skip it and proceed to check the next
-			 * page.
-			 */
-			if (unlikely(page->mapping != inode->i_mapping)) {
-				unlock_page(page);
-				continue;
-			}
-
-			if (!page_has_buffers(page)) {
-				unlock_page(page);
-				continue;
-			}
-
-			found = xfs_lookup_buffer_offset(page, &b_offset, type);
-			if (found) {
-				/*
-				 * The found offset may be less than the start
-				 * point to search if this is the first time to
-				 * come here.
-				 */
-				*offset = max_t(loff_t, startoff, b_offset);
-				unlock_page(page);
-				goto out;
-			}
-
-			/*
-			 * We either searching data but nothing was found, or
-			 * searching hole but found a data buffer.  In either
-			 * case, probably the next page contains the desired
-			 * things, update the last offset to it so.
-			 */
-			lastoff = page_offset(page) + PAGE_SIZE;
-			unlock_page(page);
-		}
-
-		/*
-		 * The number of returned pages less than our desired, search
-		 * done.
-		 */
-		if (nr_pages < want)
-			break;
-
-		index = pvec.pages[i - 1]->index + 1;
-		pagevec_release(&pvec);
-	} while (index <= end);
-
-	/* No page at lastoff and we are not done - we found a hole. */
-	if (type == HOLE_OFF && lastoff < endoff) {
-		*offset = lastoff;
-		found = true;
-	}
-out:
-	pagevec_release(&pvec);
-	return found;
-}
-
-/*
- * caller must lock inode with xfs_ilock_data_map_shared,
- * can we craft an appropriate ASSERT?
- *
- * end is because the VFS-level lseek interface is defined such that any
- * offset past i_size shall return -ENXIO, but we use this for quota code
- * which does not maintain i_size, and we want to SEEK_DATA past i_size.
- */
-loff_t
-__xfs_seek_hole_data(
-	struct inode		*inode,
-	loff_t			start,
-	loff_t			end,
-	int			whence)
-{
-	struct xfs_inode	*ip = XFS_I(inode);
-	struct xfs_mount	*mp = ip->i_mount;
-	loff_t			uninitialized_var(offset);
-	xfs_fileoff_t		fsbno;
-	xfs_filblks_t		lastbno;
-	int			error;
-
-	if (start >= end) {
-		error = -ENXIO;
-		goto out_error;
-	}
-
-	/*
-	 * Try to read extents from the first block indicated
-	 * by fsbno to the end block of the file.
-	 */
-	fsbno = XFS_B_TO_FSBT(mp, start);
-	lastbno = XFS_B_TO_FSB(mp, end);
-
-	for (;;) {
-		struct xfs_bmbt_irec	map[2];
-		int			nmap = 2;
-		unsigned int		i;
-
-		error = xfs_bmapi_read(ip, fsbno, lastbno - fsbno, map, &nmap,
-				       XFS_BMAPI_ENTIRE);
-		if (error)
-			goto out_error;
-
-		/* No extents at given offset, must be beyond EOF */
-		if (nmap == 0) {
-			error = -ENXIO;
-			goto out_error;
-		}
-
-		for (i = 0; i < nmap; i++) {
-			offset = max_t(loff_t, start,
-				       XFS_FSB_TO_B(mp, map[i].br_startoff));
-
-			/* Landed in the hole we wanted? */
-			if (whence == SEEK_HOLE &&
-			    map[i].br_startblock == HOLESTARTBLOCK)
-				goto out;
-
-			/* Landed in the data extent we wanted? */
-			if (whence == SEEK_DATA &&
-			    (map[i].br_startblock == DELAYSTARTBLOCK ||
-			     (map[i].br_state == XFS_EXT_NORM &&
-			      !isnullstartblock(map[i].br_startblock))))
-				goto out;
-
-			/*
-			 * Landed in an unwritten extent, try to search
-			 * for hole or data from page cache.
-			 */
-			if (map[i].br_state == XFS_EXT_UNWRITTEN) {
-				if (xfs_find_get_desired_pgoff(inode, &map[i],
-				      whence == SEEK_HOLE ? HOLE_OFF : DATA_OFF,
-							&offset))
-					goto out;
-			}
-		}
-
-		/*
-		 * We only received one extent out of the two requested. This
-		 * means we've hit EOF and didn't find what we are looking for.
-		 */
-		if (nmap == 1) {
-			/*
-			 * If we were looking for a hole, set offset to
-			 * the end of the file (i.e., there is an implicit
-			 * hole at the end of any file).
-		 	 */
-			if (whence == SEEK_HOLE) {
-				offset = end;
-				break;
-			}
-			/*
-			 * If we were looking for data, it's nowhere to be found
-			 */
-			ASSERT(whence == SEEK_DATA);
-			error = -ENXIO;
-			goto out_error;
-		}
-
-		ASSERT(i > 1);
-
-		/*
-		 * Nothing was found, proceed to the next round of search
-		 * if the next reading offset is not at or beyond EOF.
-		 */
-		fsbno = map[i - 1].br_startoff + map[i - 1].br_blockcount;
-		start = XFS_FSB_TO_B(mp, fsbno);
-		if (start >= end) {
-			if (whence == SEEK_HOLE) {
-				offset = end;
-				break;
-			}
-			ASSERT(whence == SEEK_DATA);
-			error = -ENXIO;
-			goto out_error;
-		}
-	}
-
-out:
-	/*
-	 * If at this point we have found the hole we wanted, the returned
-	 * offset may be bigger than the file size as it may be aligned to
-	 * page boundary for unwritten extents.  We need to deal with this
-	 * situation in particular.
-	 */
-	if (whence == SEEK_HOLE)
-		offset = min_t(loff_t, offset, end);
-
-	return offset;
-
-out_error:
-	return error;
-}
-
-STATIC loff_t
-xfs_seek_hole_data(
-	struct file		*file,
-	loff_t			start,
-	int			whence)
-{
-	struct inode		*inode = file->f_mapping->host;
-	struct xfs_inode	*ip = XFS_I(inode);
-	struct xfs_mount	*mp = ip->i_mount;
-	uint			lock;
-	loff_t			offset, end;
-	int			error = 0;
-
-	if (XFS_FORCED_SHUTDOWN(mp))
-		return -EIO;
-
-	lock = xfs_ilock_data_map_shared(ip);
-
-	end = i_size_read(inode);
-	offset = __xfs_seek_hole_data(inode, start, end, whence);
-	if (offset < 0) {
-		error = offset;
-		goto out_unlock;
-	}
-
-	offset = vfs_setpos(file, offset, inode->i_sb->s_maxbytes);
-
-out_unlock:
-	xfs_iunlock(ip, lock);
-
-	if (error)
-		return error;
-	return offset;
+	return xfs_readdir(NULL, ip, ctx, bufsize);
 }
 
 STATIC loff_t
···
 	loff_t		offset,
 	int		whence)
 {
+	struct inode		*inode = file->f_mapping->host;
+
+	if (XFS_FORCED_SHUTDOWN(XFS_I(inode)->i_mount))
+		return -EIO;
+
 	switch (whence) {
-	case SEEK_END:
-	case SEEK_CUR:
-	case SEEK_SET:
+	default:
 		return generic_file_llseek(file, offset, whence);
 	case SEEK_HOLE:
+		offset = iomap_seek_hole(inode, offset, &xfs_iomap_ops);
+		break;
 	case SEEK_DATA:
-		return xfs_seek_hole_data(file, offset, whence);
-	default:
-		return -EINVAL;
+		offset = iomap_seek_data(inode, offset, &xfs_iomap_ops);
+		break;
 	}
+
+	if (offset < 0)
+		return offset;
+	return vfs_setpos(file, offset, inode->i_sb->s_maxbytes);
 }
 
 /*

fs/xfs/xfs_fsops.c

···
 	if (nagimax)
 		mp->m_maxagi = nagimax;
 	if (mp->m_sb.sb_imax_pct) {
-		__uint64_t icount = mp->m_sb.sb_dblocks * mp->m_sb.sb_imax_pct;
+		uint64_t icount = mp->m_sb.sb_dblocks * mp->m_sb.sb_imax_pct;
 		do_div(icount, 100);
 		mp->m_maxicount = icount << mp->m_sb.sb_inopblog;
 	} else
···
 int
 xfs_reserve_blocks(
 	xfs_mount_t             *mp,
-	__uint64_t              *inval,
+	uint64_t              *inval,
 	xfs_fsop_resblks_t      *outval)
 {
-	__int64_t		lcounter, delta;
-	__int64_t		fdblks_delta = 0;
-	__uint64_t		request;
-	__int64_t		free;
+	int64_t			lcounter, delta;
+	int64_t			fdblks_delta = 0;
+	uint64_t		request;
+	int64_t			free;
 	int			error = 0;
 
 	/* If inval is null, report current values and return */
-	if (inval == (__uint64_t *)NULL) {
+	if (inval == (uint64_t *)NULL) {
 		if (!outval)
 			return -EINVAL;
 		outval->resblks = mp->m_resblks;
···
 int
 xfs_fs_goingdown(
 	xfs_mount_t	*mp,
-	__uint32_t	inflags)
+	uint32_t	inflags)
 {
 	switch (inflags) {
 	case XFS_FSOP_GOING_FLAGS_DEFAULT: {

fs/xfs/xfs_fsops.h

···
 extern int xfs_growfs_data(xfs_mount_t *mp, xfs_growfs_data_t *in);
 extern int xfs_growfs_log(xfs_mount_t *mp, xfs_growfs_log_t *in);
 extern int xfs_fs_counts(xfs_mount_t *mp, xfs_fsop_counts_t *cnt);
-extern int xfs_reserve_blocks(xfs_mount_t *mp, __uint64_t *inval,
+extern int xfs_reserve_blocks(xfs_mount_t *mp, uint64_t *inval,
 				xfs_fsop_resblks_t *outval);
-extern int xfs_fs_goingdown(xfs_mount_t *mp, __uint32_t inflags);
+extern int xfs_fs_goingdown(xfs_mount_t *mp, uint32_t inflags);
 
 extern int xfs_fs_reserve_ag_blocks(struct xfs_mount *mp);
 extern int xfs_fs_unreserve_ag_blocks(struct xfs_mount *mp);

fs/xfs/xfs_globals.c

···
 
 struct xfs_globals xfs_globals = {
 	.log_recovery_delay	=	0,	/* no delay by default */
+#ifdef XFS_ASSERT_FATAL
+	.bug_on_assert		=	true,	/* assert failures BUG() */
+#else
+	.bug_on_assert		=	false,	/* assert failures WARN() */
+#endif
 };

fs/xfs/xfs_icache.c

···
 	if (ip->i_flags & XFS_IRECLAIMABLE) {
 		trace_xfs_iget_reclaim(ip);
 
+		if (flags & XFS_IGET_INCORE) {
+			error = -EAGAIN;
+			goto out_error;
+		}
+
 		/*
 		 * We need to set XFS_IRECLAIM to prevent xfs_reclaim_inode
 		 * from stomping over us while we recycle the inode.  We can't
···
 	if (lock_flags != 0)
 		xfs_ilock(ip, lock_flags);
 
-	xfs_iflags_clear(ip, XFS_ISTALE | XFS_IDONTCACHE);
+	if (!(flags & XFS_IGET_INCORE))
+		xfs_iflags_clear(ip, XFS_ISTALE | XFS_IDONTCACHE);
 	XFS_STATS_INC(mp, xs_ig_found);
 
 	return 0;
···
 			goto out_error_or_again;
 	} else {
 		rcu_read_unlock();
+		if (flags & XFS_IGET_INCORE) {
+			error = -ENOENT;
+			goto out_error_or_again;
+		}
 		XFS_STATS_INC(mp, xs_ig_missed);
 
 		error = xfs_iget_cache_miss(mp, pag, tp, ino, &ip,
···
 	return 0;
 
 out_error_or_again:
-	if (error == -EAGAIN) {
+	if (!(flags & XFS_IGET_INCORE) && error == -EAGAIN) {
 		delay(1);
 		goto again;
 	}
 	xfs_perag_put(pag);
 	return error;
+}
+
+/*
+ * "Is this a cached inode that's also allocated?"
+ *
+ * Look up an inode by number in the given file system.  If the inode is
+ * in cache and isn't in purgatory, return 1 if the inode is allocated
+ * and 0 if it is not.  For all other cases (not in cache, being torn
+ * down, etc.), return a negative error code.
+ *
+ * The caller has to prevent inode allocation and freeing activity,
+ * presumably by locking the AGI buffer.   This is to ensure that an
+ * inode cannot transition from allocated to freed until the caller is
+ * ready to allow that.  If the inode is in an intermediate state (new,
+ * reclaimable, or being reclaimed), -EAGAIN will be returned; if the
+ * inode is not in the cache, -ENOENT will be returned.  The caller must
+ * deal with these scenarios appropriately.
+ *
+ * This is a specialized use case for the online scrubber; if you're
+ * reading this, you probably want xfs_iget.
+ */
+int
+xfs_icache_inode_is_allocated(
+	struct xfs_mount	*mp,
+	struct xfs_trans	*tp,
+	xfs_ino_t		ino,
+	bool			*inuse)
+{
+	struct xfs_inode	*ip;
+	int			error;
+
+	error = xfs_iget(mp, tp, ino, XFS_IGET_INCORE, 0, &ip);
+	if (error)
+		return error;
+
+	*inuse = !!(VFS_I(ip)->i_mode);
+	IRELE(ip);
+	return 0;
 }
 
 /*

fs/xfs/xfs_icache.h

···
 #define XFS_IGET_CREATE		0x1
 #define XFS_IGET_UNTRUSTED	0x2
 #define XFS_IGET_DONTCACHE	0x4
+#define XFS_IGET_INCORE		0x8	/* don't read from disk or reinit */
 
 /*
  * flags for AG inode iterator
···
 	}
 	return 0;
 }
+
+int xfs_icache_inode_is_allocated(struct xfs_mount *mp, struct xfs_trans *tp,
+				  xfs_ino_t ino, bool *inuse);
 
 #endif

fs/xfs/xfs_inode.c

···
 
 STATIC uint
 _xfs_dic2xflags(
-	__uint16_t		di_flags,
+	uint16_t		di_flags,
 	uint64_t		di_flags2,
 	bool			has_attr)
 {
···
 		inode->i_version = 1;
 		ip->i_d.di_flags2 = 0;
 		ip->i_d.di_cowextsize = 0;
-		ip->i_d.di_crtime.t_sec = (__int32_t)tv.tv_sec;
-		ip->i_d.di_crtime.t_nsec = (__int32_t)tv.tv_nsec;
+		ip->i_d.di_crtime.t_sec = (int32_t)tv.tv_sec;
+		ip->i_d.di_crtime.t_nsec = (int32_t)tv.tv_nsec;
 	}
 
 
···
 	dip = xfs_buf_offset(bp, ip->i_imap.im_boffset);
 
 	if (XFS_TEST_ERROR(dip->di_magic != cpu_to_be16(XFS_DINODE_MAGIC),
-			       mp, XFS_ERRTAG_IFLUSH_1, XFS_RANDOM_IFLUSH_1)) {
+			       mp, XFS_ERRTAG_IFLUSH_1)) {
 		xfs_alert_tag(mp, XFS_PTAG_IFLUSH,
 			"%s: Bad inode %Lu magic number 0x%x, ptr 0x%p",
 			__func__, ip->i_ino, be16_to_cpu(dip->di_magic), dip);
···
 		if (XFS_TEST_ERROR(
 		    (ip->i_d.di_format != XFS_DINODE_FMT_EXTENTS) &&
 		    (ip->i_d.di_format != XFS_DINODE_FMT_BTREE),
-		    mp, XFS_ERRTAG_IFLUSH_3, XFS_RANDOM_IFLUSH_3)) {
+		    mp, XFS_ERRTAG_IFLUSH_3)) {
 			xfs_alert_tag(mp, XFS_PTAG_IFLUSH,
 				"%s: Bad regular inode %Lu, ptr 0x%p",
 				__func__, ip->i_ino, ip);
···
 		    (ip->i_d.di_format != XFS_DINODE_FMT_EXTENTS) &&
 		    (ip->i_d.di_format != XFS_DINODE_FMT_BTREE) &&
 		    (ip->i_d.di_format != XFS_DINODE_FMT_LOCAL),
-		    mp, XFS_ERRTAG_IFLUSH_4, XFS_RANDOM_IFLUSH_4)) {
+		    mp, XFS_ERRTAG_IFLUSH_4)) {
 			xfs_alert_tag(mp, XFS_PTAG_IFLUSH,
 				"%s: Bad directory inode %Lu, ptr 0x%p",
 				__func__, ip->i_ino, ip);
···
 		}
 	}
 	if (XFS_TEST_ERROR(ip->i_d.di_nextents + ip->i_d.di_anextents >
-				ip->i_d.di_nblocks, mp, XFS_ERRTAG_IFLUSH_5,
-				XFS_RANDOM_IFLUSH_5)) {
+				ip->i_d.di_nblocks, mp, XFS_ERRTAG_IFLUSH_5)) {
 		xfs_alert_tag(mp, XFS_PTAG_IFLUSH,
 			"%s: detected corrupt incore inode %Lu, "
 			"total extents = %d, nblocks = %Ld, ptr 0x%p",
···
 		goto corrupt_out;
 	}
 	if (XFS_TEST_ERROR(ip->i_d.di_forkoff > mp->m_sb.sb_inodesize,
-				mp, XFS_ERRTAG_IFLUSH_6, XFS_RANDOM_IFLUSH_6)) {
+				mp, XFS_ERRTAG_IFLUSH_6)) {
 		xfs_alert_tag(mp, XFS_PTAG_IFLUSH,
 			"%s: bad inode %Lu, forkoff 0x%x, ptr 0x%p",
 			__func__, ip->i_ino, ip->i_d.di_forkoff, ip);

fs/xfs/xfs_inode.h

···
 xfs_set_projid(struct xfs_inode *ip,
 		prid_t projid)
 {
-	ip->i_d.di_projid_hi = (__uint16_t) (projid >> 16);
-	ip->i_d.di_projid_lo = (__uint16_t) (projid & 0xffff);
+	ip->i_d.di_projid_hi = (uint16_t) (projid >> 16);
+	ip->i_d.di_projid_lo = (uint16_t) (projid & 0xffff);
 }
 
 static inline prid_t
···
 		     xfs_fsize_t isize, bool *did_zeroing);
 int	xfs_zero_range(struct xfs_inode *ip, xfs_off_t pos, xfs_off_t count,
 		bool *did_zero);
-loff_t	__xfs_seek_hole_data(struct inode *inode, loff_t start,
-			     loff_t eof, int whence);
-
 
 /* from xfs_iops.c */
 extern void xfs_setup_inode(struct xfs_inode *ip);

fs/xfs/xfs_ioctl.c

···
 		handle.ha_fid.fid_pad = 0;
 		handle.ha_fid.fid_gen = inode->i_generation;
 		handle.ha_fid.fid_ino = ip->i_ino;
-
-		hsize = XFS_HSIZE(handle);
+		hsize = sizeof(xfs_handle_t);
 	}
 
 	error = -EFAULT;
···
 	struct inode		*inode,
 	unsigned char		*name,
 	unsigned char		__user *ubuf,
-	__uint32_t		*len,
-	__uint32_t		flags)
+	uint32_t		*len,
+	uint32_t		flags)
 {
 	unsigned char		*kbuf;
 	int			error = -EFAULT;
···
 	struct inode		*inode,
 	unsigned char		*name,
 	const unsigned char	__user *ubuf,
-	__uint32_t		len,
-	__uint32_t		flags)
+	uint32_t		len,
+	uint32_t		flags)
 {
 	unsigned char		*kbuf;
 	int			error;
···
 xfs_attrmulti_attr_remove(
 	struct inode		*inode,
 	unsigned char		*name,
-	__uint32_t		flags)
+	uint32_t		flags)
 {
 	int			error;
 
···
 
 STATIC unsigned int
 xfs_di2lxflags(
-	__uint16_t	di_flags)
+	uint16_t	di_flags)
 {
 	unsigned int	flags = 0;
 
···
 	struct fsxattr		*fa)
 {
 	/* Disallow 32bit project ids if projid32bit feature is not enabled. */
-	if (fa->fsx_projid > (__uint16_t)-1 &&
+	if (fa->fsx_projid > (uint16_t)-1 &&
 	    !xfs_sb_version_hasprojid32bit(&ip->i_mount->m_sb))
 		return -EINVAL;
 
···
 
 	case XFS_IOC_SET_RESBLKS: {
 		xfs_fsop_resblks_t inout;
-		__uint64_t	   in;
+		uint64_t	   in;
 
 		if (!capable(CAP_SYS_ADMIN))
 			return -EPERM;
···
 	}
 
 	case XFS_IOC_GOINGDOWN: {
-		__uint32_t in;
+		uint32_t in;
 
 		if (!capable(CAP_SYS_ADMIN))
 			return -EPERM;
 
-		if (get_user(in, (__uint32_t __user *)arg))
+		if (get_user(in, (uint32_t __user *)arg))
 			return -EFAULT;
 
 		return xfs_fs_goingdown(mp, in);
···
 		if (copy_from_user(&in, arg, sizeof(in)))
 			return -EFAULT;
 
-		return xfs_errortag_add(in.errtag, mp);
+		return xfs_errortag_add(mp, in.errtag);
 	}
 
 	case XFS_IOC_ERROR_CLEARALL:
 		if (!capable(CAP_SYS_ADMIN))
 			return -EPERM;
 
-		return xfs_errortag_clearall(mp, 1);
+		return xfs_errortag_clearall(mp);
 
 	case XFS_IOC_FREE_EOFBLOCKS: {
 		struct xfs_fs_eofblocks eofb;

fs/xfs/xfs_ioctl.h

···
 	struct inode		*inode,
 	unsigned char		*name,
 	unsigned char		__user *ubuf,
-	__uint32_t		*len,
-	__uint32_t		flags);
+	uint32_t		*len,
+	uint32_t		flags);
 
 extern int
 xfs_attrmulti_attr_set(
 	struct inode		*inode,
 	unsigned char		*name,
 	const unsigned char	__user *ubuf,
-	__uint32_t		len,
-	__uint32_t		flags);
+	uint32_t		len,
+	uint32_t		flags);
 
 extern int
 xfs_attrmulti_attr_remove(
 	struct inode		*inode,
 	unsigned char		*name,
-	__uint32_t		flags);
+	uint32_t		flags);
 
 extern struct dentry *
 xfs_handle_to_dentry(

fs/xfs/xfs_ioctl32.h

···
 
 /* The bstat field in the swapext struct needs translation */
 typedef struct compat_xfs_swapext {
-	__int64_t		sx_version;	/* version */
-	__int64_t		sx_fdtarget;	/* fd of target file */
-	__int64_t		sx_fdtmp;	/* fd of tmp file */
+	int64_t			sx_version;	/* version */
+	int64_t			sx_fdtarget;	/* fd of target file */
+	int64_t			sx_fdtmp;	/* fd of tmp file */
 	xfs_off_t		sx_offset;	/* offset into file */
 	xfs_off_t		sx_length;	/* leng from offset */
 	char			sx_pad[16];	/* pad space, unused */

fs/xfs/xfs_iomap.c

···
 	if (unlikely(XFS_TEST_ERROR(
 	    (XFS_IFORK_FORMAT(ip, XFS_DATA_FORK) != XFS_DINODE_FMT_EXTENTS &&
 	     XFS_IFORK_FORMAT(ip, XFS_DATA_FORK) != XFS_DINODE_FMT_BTREE),
-	     mp, XFS_ERRTAG_BMAPIFORMAT, XFS_RANDOM_BMAPIFORMAT))) {
+	     mp, XFS_ERRTAG_BMAPIFORMAT))) {
 		XFS_ERROR_REPORT(__func__, XFS_ERRLEVEL_LOW, mp);
 		error = -EFSCORRUPTED;
 		goto out_unlock;
···
 	 * Behave as if the write failed if drop writes is enabled. Set the NEW
 	 * flag to force delalloc cleanup.
 	 */
-	if (xfs_mp_drop_writes(mp)) {
+	if (XFS_TEST_ERROR(false, mp, XFS_ERRTAG_DROP_WRITES)) {
 		iomap->flags |= IOMAP_F_NEW;
 		written = 0;
 	}

fs/xfs/xfs_iops.c

···
 
 #ifdef CONFIG_XFS_POSIX_ACL
 	if (default_acl) {
-		error = xfs_set_acl(inode, default_acl, ACL_TYPE_DEFAULT);
+		error = __xfs_set_acl(inode, default_acl, ACL_TYPE_DEFAULT);
 		if (error)
 			goto out_cleanup_inode;
 	}
 	if (acl) {
-		error = xfs_set_acl(inode, acl, ACL_TYPE_ACCESS);
+		error = __xfs_set_acl(inode, acl, ACL_TYPE_ACCESS);
 		if (error)
 			goto out_cleanup_inode;
 	}
···
 	if (!dentry)
 		return ERR_PTR(-ECHILD);
 
-	link = kmalloc(MAXPATHLEN+1, GFP_KERNEL);
+	link = kmalloc(XFS_SYMLINK_MAXLEN+1, GFP_KERNEL);
 	if (!link)
 		goto out_err;
 

fs/xfs/xfs_itable.c

···
 #include "xfs_trace.h"
 #include "xfs_icache.h"
 
-STATIC int
+int
 xfs_internal_inum(
 	xfs_mount_t	*mp,
 	xfs_ino_t	ino)

fs/xfs/xfs_itable.h

···
 	void			__user *buffer, /* buffer with inode info */
 	inumbers_fmt_pf		formatter);
 
+int xfs_internal_inum(struct xfs_mount *mp, xfs_ino_t ino);
+
 #endif	/* __XFS_ITABLE_H__ */

fs/xfs/xfs_linux.h

···
 /*
  * Kernel specific type declarations for XFS
  */
-typedef signed char		__int8_t;
-typedef unsigned char		__uint8_t;
-typedef signed short int	__int16_t;
-typedef unsigned short int	__uint16_t;
-typedef signed int		__int32_t;
-typedef unsigned int		__uint32_t;
-typedef signed long long int	__int64_t;
-typedef unsigned long long int	__uint64_t;
 
 typedef __s64			xfs_off_t;	/* <file offset> type */
 typedef unsigned long long	xfs_ino_t;	/* <inode> type */
···
 #define __return_address __builtin_return_address(0)
 
 #define XFS_PROJID_DEFAULT	0
-#define MAXPATHLEN	1024
 
 #define MIN(a,b)	(min(a,b))
 #define MAX(a,b)	(max(a,b))
···
  * are converting to the init_user_ns. The uid is later mapped to a particular
  * user namespace value when crossing the kernel/user boundary.
  */
-static inline __uint32_t xfs_kuid_to_uid(kuid_t uid)
+static inline uint32_t xfs_kuid_to_uid(kuid_t uid)
 {
 	return from_kuid(&init_user_ns, uid);
 }
 
-static inline kuid_t xfs_uid_to_kuid(__uint32_t uid)
+static inline kuid_t xfs_uid_to_kuid(uint32_t uid)
 {
 	return make_kuid(&init_user_ns, uid);
 }
 
-static inline __uint32_t xfs_kgid_to_gid(kgid_t gid)
+static inline uint32_t xfs_kgid_to_gid(kgid_t gid)
 {
 	return from_kgid(&init_user_ns, gid);
 }
 
-static inline kgid_t xfs_gid_to_kgid(__uint32_t gid)
+static inline kgid_t xfs_gid_to_kgid(uint32_t gid)
 {
 	return make_kgid(&init_user_ns, gid);
 }
···
 
 #define do_mod(a, b)	xfs_do_mod(&(a), (b), sizeof(a))
 
-static inline __uint64_t roundup_64(__uint64_t x, __uint32_t y)
+static inline uint64_t roundup_64(uint64_t x, uint32_t y)
 {
 	x += y - 1;
 	do_div(x, y);
 	return x * y;
 }
 
-static inline __uint64_t howmany_64(__uint64_t x, __uint32_t y)
+static inline uint64_t howmany_64(uint64_t x, uint32_t y)
 {
 	x += y - 1;
 	do_div(x, y);

fs/xfs/xfs_log.c

···
 	int		 	unit_bytes,
 	int		 	cnt,
 	struct xlog_ticket	**ticp,
-	__uint8_t	 	client,
+	uint8_t		 	client,
 	bool			permanent)
 {
 	struct xlog		*log = mp->m_log;
···
 		if (!error) {
 			/* the data section must be 32 bit size aligned */
 			struct {
-			    __uint16_t magic;
-			    __uint16_t pad1;
-			    __uint32_t pad2; /* may as well make it 64 bits */
+			    uint16_t magic;
+			    uint16_t pad1;
+			    uint32_t pad2; /* may as well make it 64 bits */
 			} magic = {
 				.magic = XLOG_UNMOUNT_TYPE,
 			};
···
 	 * IOABORT state. The IOABORT state is only set in DEBUG mode to inject
 	 * CRC errors into log recovery.
 	 */
-	if (XFS_TEST_ERROR(bp->b_error, l->l_mp, XFS_ERRTAG_IODONE_IOERR,
-			   XFS_RANDOM_IODONE_IOERR) ||
+	if (XFS_TEST_ERROR(bp->b_error, l->l_mp, XFS_ERRTAG_IODONE_IOERR) ||
 	    iclog->ic_state & XLOG_STATE_IOABORT) {
 		if (iclog->ic_state & XLOG_STATE_IOABORT)
 			iclog->ic_state &= ~XLOG_STATE_IOABORT;
···
 	char			*dp,
 	int			size)
 {
-	__uint32_t		crc;
+	uint32_t		crc;
 
 	/* first generate the crc for the record header ... */
 	crc = xfs_start_cksum_update((char *)rhead,
···
 		 */
 		dptr = (char *)&iclog->ic_header + count;
 		for (i = 0; i < split; i += BBSIZE) {
-			__uint32_t cycle = be32_to_cpu(*(__be32 *)dptr);
+			uint32_t cycle = be32_to_cpu(*(__be32 *)dptr);
 			if (++cycle == XLOG_HEADER_MAGIC_NUM)
 				cycle++;
 			*(__be32 *)dptr = cpu_to_be32(cycle);
···
 	/* calculcate the checksum */
 	iclog->ic_header.h_crc = xlog_cksum(log, &iclog->ic_header,
 					    iclog->ic_datap, size);
-#ifdef DEBUG
 	/*
 	 * Intentionally corrupt the log record CRC based on the error injection
 	 * frequency, if defined. This facilitates testing log recovery in the
···
 	 * write on I/O completion and shutdown the fs. The subsequent mount
 	 * detects the bad CRC and attempts to recover.
 	 */
-	if (log->l_badcrc_factor &&
-	    (prandom_u32() % log->l_badcrc_factor == 0)) {
+	if (XFS_TEST_ERROR(false, log->l_mp, XFS_ERRTAG_LOG_BAD_CRC)) {
 		iclog->ic_header.h_crc &= cpu_to_le32(0xAAAAAAAA);
 		iclog->ic_state |= XLOG_STATE_IOABORT;
 		xfs_warn(log->l_mp,
 	"Intentionally corrupted log record at LSN 0x%llx. Shutdown imminent.",
 			 be64_to_cpu(iclog->ic_header.h_lsn));
 	}
-#endif
 
 	bp->b_io_length = BTOBB(count);
 	bp->b_fspriv = iclog;
···
 	};
 #undef REG_TYPE_STR
 
-	xfs_warn(mp, "xlog_write: reservation summary:");
+	xfs_warn(mp, "ticket reservation summary:");
 	xfs_warn(mp, "  unit res    = %d bytes",
 		 ticket->t_unit_res);
 	xfs_warn(mp, "  current res = %d bytes",
···
 			    "bad-rtype" : res_type_str[r_type]),
 			    ticket->t_res_arr[i].r_len);
 	}
+}
 
-	xfs_alert_tag(mp, XFS_PTAG_LOGRES,
-		"xlog_write: reservation ran out. Need to up reservation");
-	xfs_force_shutdown(mp, SHUTDOWN_LOG_IO_ERROR);
+/*
+ * Print a summary of the transaction.
+ */
+void
+xlog_print_trans(
+	struct xfs_trans		*tp)
+{
+	struct xfs_mount		*mp = tp->t_mountp;
+	struct xfs_log_item_desc	*lidp;
+
+	/* dump core transaction and ticket info */
+	xfs_warn(mp, "transaction summary:");
+	xfs_warn(mp, "  flags	= 0x%x", tp->t_flags);
+
+	xlog_print_tic_res(mp, tp->t_ticket);
+
+	/* dump each log item */
+	list_for_each_entry(lidp, &tp->t_items, lid_trans) {
+		struct xfs_log_item	*lip = lidp->lid_item;
+		struct xfs_log_vec	*lv = lip->li_lv;
+		struct xfs_log_iovec	*vec;
+		int			i;
+
+		xfs_warn(mp, "log item: ");
+		xfs_warn(mp, "  type	= 0x%x", lip->li_type);
+		xfs_warn(mp, "  flags	= 0x%x", lip->li_flags);
+		if (!lv)
+			continue;
+		xfs_warn(mp, "  niovecs	= %d", lv->lv_niovecs);
+		xfs_warn(mp, "  size	= %d", lv->lv_size);
+		xfs_warn(mp, "  bytes	= %d", lv->lv_bytes);
+		xfs_warn(mp, "  buf len	= %d", lv->lv_buf_len);
+
+		/* dump each iovec for the log item */
+		vec = lv->lv_iovecp;
+		for (i = 0; i < lv->lv_niovecs; i++) {
+			int dumplen = min(vec->i_len, 32);
+
+			xfs_warn(mp, "  iovec[%d]", i);
+			xfs_warn(mp, "    type	= 0x%x", vec->i_type);
+			xfs_warn(mp, "    len	= %d", vec->i_len);
+			xfs_warn(mp, "    first %d bytes of iovec[%d]:", dumplen, i);
+			xfs_hex_dump(vec->i_addr, dumplen);
+
+			vec++;
+		}
+	}
 }
 
 /*
···
 	if (flags & (XLOG_COMMIT_TRANS | XLOG_UNMOUNT_TRANS))
 		ticket->t_curr_res -= sizeof(xlog_op_header_t);
 
-	if (ticket->t_curr_res < 0)
+	if (ticket->t_curr_res < 0) {
+		xfs_alert_tag(log->l_mp, XFS_PTAG_LOGRES,
+		     "ctx ticket reservation ran out. Need to up reservation");
 		xlog_print_tic_res(log->l_mp, ticket);
+		xfs_force_shutdown(log->l_mp, SHUTDOWN_LOG_IO_ERROR);
+	}
 
 	index = 0;
 	lv = log_vector;
···
 			}
 
 			reg = &vecp[index];
-			ASSERT(reg->i_len % sizeof(__int32_t) == 0);
-			ASSERT((unsigned long)ptr % sizeof(__int32_t) == 0);
+			ASSERT(reg->i_len % sizeof(int32_t) == 0);
+			ASSERT((unsigned long)ptr % sizeof(int32_t) == 0);
 
 			start_rec_copy = xlog_write_start_rec(ptr, ticket);
 			if (start_rec_copy) {
···
 	/* Round up to next log-sunit */
 	if (xfs_sb_version_haslogv2(&log->l_mp->m_sb) &&
 	    log->l_mp->m_sb.sb_logsunit > 1) {
-		__uint32_t sunit_bb = BTOBB(log->l_mp->m_sb.sb_logsunit);
+		uint32_t sunit_bb = BTOBB(log->l_mp->m_sb.sb_logsunit);
 		log->l_curr_block = roundup(log->l_curr_block, sunit_bb);
 	}
 
···
 	xlog_in_core_2_t	*xhdr;
 	void			*base_ptr, *ptr, *p;
 	ptrdiff_t		field_offset;
-	__uint8_t		clientid;
+	uint8_t			clientid;
 	int			len, i, j, k, op_len;
 	int			idx;
 

fs/xfs/xfs_log.h

···
 			  int		   length,
 			  int		   count,
 			  struct xlog_ticket **ticket,
-			  __uint8_t	   clientid,
+			  uint8_t		   clientid,
 			  bool		   permanent);
 int	  xfs_log_regrant(struct xfs_mount *mp, struct xlog_ticket *tic);
 void      xfs_log_unmount(struct xfs_mount *mp);

fs/xfs/xfs_log_cil.c

···
 	int			len = 0;
 	int			diff_iovecs = 0;
 	int			iclog_space;
+	int			iovhdr_res = 0, split_res = 0, ctx_res = 0;
 
 	ASSERT(tp);
 
···
 	 */
 	xlog_cil_insert_format_items(log, tp, &len, &diff_iovecs);
 
+	spin_lock(&cil->xc_cil_lock);
+
+	/* account for space used by new iovec headers  */
+	iovhdr_res = diff_iovecs * sizeof(xlog_op_header_t);
+	len += iovhdr_res;
+	ctx->nvecs += diff_iovecs;
+
+	/* attach the transaction to the CIL if it has any busy extents */
+	if (!list_empty(&tp->t_busy))
+		list_splice_init(&tp->t_busy, &ctx->busy_extents);
+
+	/*
+	 * Now transfer enough transaction reservation to the context ticket
+	 * for the checkpoint. The context ticket is special - the unit
+	 * reservation has to grow as well as the current reservation as we
+	 * steal from tickets so we can correctly determine the space used
+	 * during the transaction commit.
+	 */
+	if (ctx->ticket->t_curr_res == 0) {
+		ctx_res = ctx->ticket->t_unit_res;
+		ctx->ticket->t_curr_res = ctx_res;
+		tp->t_ticket->t_curr_res -= ctx_res;
+	}
+
+	/* do we need space for more log record headers? */
+	iclog_space = log->l_iclog_size - log->l_iclog_hsize;
+	if (len > 0 && (ctx->space_used / iclog_space !=
+				(ctx->space_used + len) / iclog_space)) {
+		split_res = (len + iclog_space - 1) / iclog_space;
+		/* need to take into account split region headers, too */
+		split_res *= log->l_iclog_hsize + sizeof(struct xlog_op_header);
+		ctx->ticket->t_unit_res += split_res;
+		ctx->ticket->t_curr_res += split_res;
+		tp->t_ticket->t_curr_res -= split_res;
+		ASSERT(tp->t_ticket->t_curr_res >= len);
+	}
+	tp->t_ticket->t_curr_res -= len;
+	ctx->space_used += len;
+
+	/*
+	 * If we've overrun the reservation, dump the tx details before we move
+	 * the log items. Shutdown is imminent...
+	 */
+	if (WARN_ON(tp->t_ticket->t_curr_res < 0)) {
+		xfs_warn(log->l_mp, "Transaction log reservation overrun:");
+		xfs_warn(log->l_mp,
+			 "  log items: %d bytes (iov hdrs: %d bytes)",
+			 len, iovhdr_res);
+		xfs_warn(log->l_mp, "  split region headers: %d bytes",
+			 split_res);
+		xfs_warn(log->l_mp, "  ctx ticket: %d bytes", ctx_res);
+		xlog_print_trans(tp);
+	}
+
 	/*
 	 * Now (re-)position everything modified at the tail of the CIL.
 	 * We do this here so we only need to take the CIL lock once during
 	 * the transaction commit.
 	 */
-	spin_lock(&cil->xc_cil_lock);
 	list_for_each_entry(lidp, &tp->t_items, lid_trans) {
 		struct xfs_log_item	*lip = lidp->lid_item;
 
···
 			list_move_tail(&lip->li_cil, &cil->xc_cil);
 	}
 
-	/* account for space used by new iovec headers  */
-	len += diff_iovecs * sizeof(xlog_op_header_t);
-	ctx->nvecs += diff_iovecs;
-
-	/* attach the transaction to the CIL if it has any busy extents */
-	if (!list_empty(&tp->t_busy))
-		list_splice_init(&tp->t_busy, &ctx->busy_extents);
-
-	/*
-	 * Now transfer enough transaction reservation to the context ticket
-	 * for the checkpoint. The context ticket is special - the unit
-	 * reservation has to grow as well as the current reservation as we
-	 * steal from tickets so we can correctly determine the space used
-	 * during the transaction commit.
-	 */
-	if (ctx->ticket->t_curr_res == 0) {
-		ctx->ticket->t_curr_res = ctx->ticket->t_unit_res;
-		tp->t_ticket->t_curr_res -= ctx->ticket->t_unit_res;
-	}
-
-	/* do we need space for more log record headers? */
-	iclog_space = log->l_iclog_size - log->l_iclog_hsize;
-	if (len > 0 && (ctx->space_used / iclog_space !=
-				(ctx->space_used + len) / iclog_space)) {
-		int hdrs;
-
-		hdrs = (len + iclog_space - 1) / iclog_space;
-		/* need to take into account split region headers, too */
-		hdrs *= log->l_iclog_hsize + sizeof(struct xlog_op_header);
-		ctx->ticket->t_unit_res += hdrs;
-		ctx->ticket->t_curr_res += hdrs;
-		tp->t_ticket->t_curr_res -= hdrs;
-		ASSERT(tp->t_ticket->t_curr_res >= len);
-	}
-	tp->t_ticket->t_curr_res -= len;
-	ctx->space_used += len;
-
 	spin_unlock(&cil->xc_cil_lock);
+
+	if (tp->t_ticket->t_curr_res < 0)
+		xfs_force_shutdown(log->l_mp, SHUTDOWN_LOG_IO_ERROR);
 }
 
 static void
···
 {
 	struct xlog		*log = mp->m_log;
 	struct xfs_cil		*cil = log->l_cilp;
+	xfs_lsn_t		xc_commit_lsn;
 
 	/*
 	 * Do all necessary memory allocation before we lock the CIL.
···
 
 	xlog_cil_insert_items(log, tp);
 
-	/* check we didn't blow the reservation */
-	if (tp->t_ticket->t_curr_res < 0)
-		xlog_print_tic_res(mp, tp->t_ticket);
-
-	tp->t_commit_lsn = cil->xc_ctx->sequence;
+	xc_commit_lsn = cil->xc_ctx->sequence;
 	if (commit_lsn)
-		*commit_lsn = tp->t_commit_lsn;
+		*commit_lsn = xc_commit_lsn;
 
 	xfs_log_done(mp, tp->t_ticket, NULL, regrant);
 	xfs_trans_unreserve_and_mod_sb(tp);
···
 	 * the log items. This affects (at least) processing of stale buffers,
 	 * inodes and EFIs.
 	 */
-	xfs_trans_free_items(tp, tp->t_commit_lsn, false);
+	xfs_trans_free_items(tp, xc_commit_lsn, false);
 
 	xlog_cil_push_background(log);
 

fs/xfs/xfs_log_priv.h

···
 };
 
 #define XLOG_BUF_CANCEL_BUCKET(log, blkno) \
-	((log)->l_buf_cancel_table + ((__uint64_t)blkno % XLOG_BC_TABLE_SIZE))
+	((log)->l_buf_cancel_table + ((uint64_t)blkno % XLOG_BC_TABLE_SIZE))
 
 #define XLOG_FORCED_SHUTDOWN(log)	((log)->l_flags & XLOG_IO_ERROR)
 
···
 }
 
 void	xlog_print_tic_res(struct xfs_mount *mp, struct xlog_ticket *ticket);
+void	xlog_print_trans(struct xfs_trans *);
 int
 xlog_write(
 	struct xlog		*log,

fs/xfs/xfs_log_recover.c

···
 	struct xfs_mount	*mp,
 	struct xfs_buf		*bp)
 {
-	__uint32_t		magic32;
-	__uint16_t		magic16;
-	__uint16_t		magicda;
+	uint32_t		magic32;
+	uint16_t		magic16;
+	uint16_t		magicda;
 	void			*blk = bp->b_addr;
 	uuid_t			*uuid;
 	xfs_lsn_t		lsn = -1;
···
 	xfs_lsn_t		current_lsn)
 {
 	struct xfs_da_blkinfo	*info = bp->b_addr;
-	__uint32_t		magic32;
-	__uint16_t		magic16;
-	__uint16_t		magicda;
+	uint32_t		magic32;
+	uint16_t		magic16;
+	uint16_t		magicda;
 	char			*warnmsg = NULL;
 
 	/*
···
 	if (XFS_DINODE_MAGIC ==
 	    be16_to_cpu(*((__be16 *)xfs_buf_offset(bp, 0))) &&
 	    (BBTOB(bp->b_io_length) != MAX(log->l_mp->m_sb.sb_blocksize,
-			(__uint32_t)log->l_mp->m_inode_cluster_size))) {
+			(uint32_t)log->l_mp->m_inode_cluster_size))) {
 		xfs_buf_stale(bp);
 		error = xfs_bwrite(bp);
 	} else {
···
 	xfs_efd_log_format_t	*efd_formatp;
 	xfs_efi_log_item_t	*efip = NULL;
 	xfs_log_item_t		*lip;
-	__uint64_t		efi_id;
+	uint64_t		efi_id;
 	struct xfs_ail_cursor	cur;
 	struct xfs_ail		*ailp = log->l_ailp;
 
···
 	struct xfs_rud_log_format	*rud_formatp;
 	struct xfs_rui_log_item		*ruip = NULL;
 	struct xfs_log_item		*lip;
-	__uint64_t			rui_id;
+	uint64_t			rui_id;
 	struct xfs_ail_cursor		cur;
 	struct xfs_ail			*ailp = log->l_ailp;
 
···
 	struct xfs_cud_log_format	*cud_formatp;
 	struct xfs_cui_log_item		*cuip = NULL;
 	struct xfs_log_item		*lip;
-	__uint64_t			cui_id;
+	uint64_t			cui_id;
 	struct xfs_ail_cursor		cur;
 	struct xfs_ail			*ailp = log->l_ailp;
 
···
 	struct xfs_bud_log_format	*bud_formatp;
 	struct xfs_bui_log_item		*buip = NULL;
 	struct xfs_log_item		*lip;
-	__uint64_t			bui_id;
+	uint64_t			bui_id;
 	struct xfs_ail_cursor		cur;
 	struct xfs_ail			*ailp = log->l_ailp;
 
···
 
 	#define XLOG_RECOVER_COMMIT_QUEUE_MAX 100
 
-	hlist_del(&trans->r_list);
+	hlist_del_init(&trans->r_list);
 
 	error = xlog_recover_reorder_trans(log, trans, pass);
 	if (error)
···
 {
 	xlog_recover_item_t	*item, *n;
 	int			i;
+
+	hlist_del_init(&trans->r_list);
 
 	list_for_each_entry_safe(item, n, &trans->r_itemq, ri_list) {
 		/* Free the regions in the item. */
···
 	int			error2 = 0;
 	int			bblks, split_bblks;
 	int			hblks, split_hblks, wrapped_hblks;
+	int			i;
 	struct hlist_head	rhash[XLOG_RHASH_SIZE];
 	LIST_HEAD		(buffer_list);
 
 	ASSERT(head_blk != tail_blk);
 	rhead_blk = 0;
+
+	for (i = 0; i < XLOG_RHASH_SIZE; i++)
+		INIT_HLIST_HEAD(&rhash[i]);
 
 	/*
 	 * Read the header of the tail block and get the iclog buffer size from
···
 
 	if (error && first_bad)
 		*first_bad = rhead_blk;
+
+	/*
+	 * Transactions are freed at commit time but transactions without commit
+	 * records on disk are never committed. Free any that may be left in the
+	 * hash table.
+	 */
+	for (i = 0; i < XLOG_RHASH_SIZE; i++) {
+		struct hlist_node	*tmp;
+		struct xlog_recover	*trans;
+
+		hlist_for_each_entry_safe(trans, tmp, &rhash[i], r_list)
+			xlog_recover_free_trans(trans);
+	}
 
 	return error ? error : error2;
 }
···
 	xfs_buf_t	*agfbp;
 	xfs_buf_t	*agibp;
 	xfs_agnumber_t	agno;
-	__uint64_t	freeblks;
-	__uint64_t	itotal;
-	__uint64_t	ifree;
+	uint64_t	freeblks;
+	uint64_t	itotal;
+	uint64_t	ifree;
 	int		error;
 
 	mp = log->l_mp;

fs/xfs/xfs_message.c

···
 {
 	xfs_emerg(NULL, "Assertion failed: %s, file: %s, line: %d",
 		expr, file, line);
-	BUG();
+	if (xfs_globals.bug_on_assert)
+		BUG();
+	else
+		WARN_ON(1);
 }
 
 void

fs/xfs/xfs_mount.c

···
 int
 xfs_sb_validate_fsb_count(
 	xfs_sb_t	*sbp,
-	__uint64_t	nblocks)
+	uint64_t	nblocks)
 {
 	ASSERT(PAGE_SHIFT >= sbp->sb_blocklog);
 	ASSERT(sbp->sb_blocklog >= BBSHIFT);
···
 xfs_set_maxicount(xfs_mount_t *mp)
 {
 	xfs_sb_t	*sbp = &(mp->m_sb);
-	__uint64_t	icount;
+	uint64_t	icount;
 
 	if (sbp->sb_imax_pct) {
 		/*
···
 	int i;
 
 	for (i = 0; i < XFS_LOWSP_MAX; i++) {
-		__uint64_t space = mp->m_sb.sb_dblocks;
+		uint64_t space = mp->m_sb.sb_dblocks;
 
 		do_div(space, 100);
 		mp->m_low_space[i] = space * (i + 1);
···
 	return xfs_sync_sb(mp, false);
 }
 
-__uint64_t
+uint64_t
 xfs_default_resblks(xfs_mount_t *mp)
 {
-	__uint64_t resblks;
+	uint64_t resblks;
 
 	/*
 	 * We default to 5% or 8192 fsbs of space reserved, whichever is
···
 	 */
 	resblks = mp->m_sb.sb_dblocks;
 	do_div(resblks, 20);
-	resblks = min_t(__uint64_t, resblks, 8192);
+	resblks = min_t(uint64_t, resblks, 8192);
 	return resblks;
 }
 
···
 {
 	struct xfs_sb		*sbp = &(mp->m_sb);
 	struct xfs_inode	*rip;
-	__uint64_t		resblks;
+	uint64_t		resblks;
 	uint			quotamount = 0;
 	uint			quotaflags = 0;
 	int			error = 0;
···
 	if (error)
 		goto out_del_stats;
 
+	error = xfs_errortag_init(mp);
+	if (error)
+		goto out_remove_error_sysfs;
 
 	error = xfs_uuid_mount(mp);
 	if (error)
-		goto out_remove_error_sysfs;
+		goto out_remove_errortag;
 
 	/*
 	 * Set the minimum read and write sizes
···
 	xfs_da_unmount(mp);
  out_remove_uuid:
 	xfs_uuid_unmount(mp);
+ out_remove_errortag:
+	xfs_errortag_del(mp);
  out_remove_error_sysfs:
 	xfs_error_sysfs_del(mp);
  out_del_stats:
···
 xfs_unmountfs(
 	struct xfs_mount	*mp)
 {
-	__uint64_t		resblks;
+	uint64_t		resblks;
 	int			error;
 
 	cancel_delayed_work_sync(&mp->m_eofblocks_work);
···
 	xfs_uuid_unmount(mp);
 
 #if defined(DEBUG)
-	xfs_errortag_clearall(mp, 0);
+	xfs_errortag_clearall(mp);
 #endif
 	xfs_free_perag(mp);
 
+	xfs_errortag_del(mp);
 	xfs_error_sysfs_del(mp);
 	xfs_sysfs_del(&mp->m_stats.xs_kobj);
 	xfs_sysfs_del(&mp->m_kobj);

fs/xfs/xfs_mount.h

···
 	xfs_buftarg_t		*m_ddev_targp;	/* saves taking the address */
 	xfs_buftarg_t		*m_logdev_targp;/* ptr to log device */
 	xfs_buftarg_t		*m_rtdev_targp;	/* ptr to rt device */
-	__uint8_t		m_blkbit_log;	/* blocklog + NBBY */
-	__uint8_t		m_blkbb_log;	/* blocklog - BBSHIFT */
-	__uint8_t		m_agno_log;	/* log #ag's */
-	__uint8_t		m_agino_log;	/* #bits for agino in inum */
+	uint8_t			m_blkbit_log;	/* blocklog + NBBY */
+	uint8_t			m_blkbb_log;	/* blocklog - BBSHIFT */
+	uint8_t			m_agno_log;	/* log #ag's */
+	uint8_t			m_agino_log;	/* #bits for agino in inum */
 	uint			m_inode_cluster_size;/* min inode buf size */
 	uint			m_blockmask;	/* sb_blocksize-1 */
 	uint			m_blockwsize;	/* sb_blocksize in words */
···
 	struct mutex		m_growlock;	/* growfs mutex */
 	int			m_fixedfsid[2];	/* unchanged for life of FS */
 	uint			m_dmevmask;	/* DMI events for this FS */
-	__uint64_t		m_flags;	/* global mount flags */
+	uint64_t		m_flags;	/* global mount flags */
 	bool			m_inotbt_nores; /* no per-AG finobt resv. */
 	int			m_ialloc_inos;	/* inodes in inode allocation */
 	int			m_ialloc_blks;	/* blocks in inode allocation */
···
 	int			m_inoalign_mask;/* mask sb_inoalignmt if used */
 	uint			m_qflags;	/* quota status flags */
 	struct xfs_trans_resv	m_resv;		/* precomputed res values */
-	__uint64_t		m_maxicount;	/* maximum inode count */
-	__uint64_t		m_resblks;	/* total reserved blocks */
-	__uint64_t		m_resblks_avail;/* available reserved blocks */
-	__uint64_t		m_resblks_save;	/* reserved blks @ remount,ro */
+	uint64_t		m_maxicount;	/* maximum inode count */
+	uint64_t		m_resblks;	/* total reserved blocks */
+	uint64_t		m_resblks_avail;/* available reserved blocks */
+	uint64_t		m_resblks_save;	/* reserved blks @ remount,ro */
 	int			m_dalign;	/* stripe unit */
 	int			m_swidth;	/* stripe width */
 	int			m_sinoalign;	/* stripe unit inode alignment */
-	__uint8_t		m_sectbb_log;	/* sectlog - BBSHIFT */
+	uint8_t			m_sectbb_log;	/* sectlog - BBSHIFT */
 	const struct xfs_nameops *m_dirnameops;	/* vector of dir name ops */
 	const struct xfs_dir_ops *m_dir_inode_ops; /* vector of dir inode ops */
 	const struct xfs_dir_ops *m_nondir_inode_ops; /* !dir inode ops */
···
 	 * ever support shrinks it would have to be persisted in addition
 	 * to various other kinds of pain inflicted on the pNFS server.
 	 */
-	__uint32_t		m_generation;
+	uint32_t		m_generation;
 
 	bool			m_fail_unmount;
 #ifdef DEBUG
 	/*
-	 * DEBUG mode instrumentation to test and/or trigger delayed allocation
-	 * block killing in the event of failed writes. When enabled, all
-	 * buffered writes are silenty dropped and handled as if they failed.
-	 * All delalloc blocks in the range of the write (including pre-existing
-	 * delalloc blocks!) are tossed as part of the write failure error
-	 * handling sequence.
+	 * Frequency with which errors are injected.  Replaces xfs_etest; the
+	 * value stored in here is the inverse of the frequency with which the
+	 * error triggers.  1 = always, 2 = half the time, etc.
 	 */
-	bool			m_drop_writes;
+	unsigned int		*m_errortag;
+	struct xfs_kobj		m_errortag_kobj;
 #endif
 } xfs_mount_t;
 
···
 	return (xfs_agblock_t) do_div(ld, mp->m_sb.sb_agblocks);
 }
 
-#ifdef DEBUG
-static inline bool
-xfs_mp_drop_writes(struct xfs_mount *mp)
-{
-	return mp->m_drop_writes;
-}
-#else
-static inline bool
-xfs_mp_drop_writes(struct xfs_mount *mp)
-{
-	return 0;
-}
-#endif
-
 /* per-AG block reservation data structures*/
 enum xfs_ag_resv_type {
 	XFS_AG_RESV_NONE = 0,
···
 	char		pagi_init;	/* this agi's entry is initialized */
 	char		pagf_metadata;	/* the agf is preferred to be metadata */
 	char		pagi_inodeok;	/* The agi is ok for inodes */
-	__uint8_t	pagf_levels[XFS_BTNUM_AGF];
+	uint8_t		pagf_levels[XFS_BTNUM_AGF];
 					/* # of levels in bno & cnt btree */
-	__uint32_t	pagf_flcount;	/* count of blocks in freelist */
+	uint32_t	pagf_flcount;	/* count of blocks in freelist */
 	xfs_extlen_t	pagf_freeblks;	/* total free blocks */
 	xfs_extlen_t	pagf_longest;	/* longest free space */
-	__uint32_t	pagf_btreeblks;	/* # of blocks held in AGF btrees */
+	uint32_t	pagf_btreeblks;	/* # of blocks held in AGF btrees */
 	xfs_agino_t	pagi_freecount;	/* number of free inodes */
 	xfs_agino_t	pagi_count;	/* number of allocated inodes */
 
···
 	struct xfs_ag_resv	pag_agfl_resv;
 
 	/* reference count */
-	__uint8_t		pagf_refcount_level;
+	uint8_t			pagf_refcount_level;
 } xfs_perag_t;
 
 static inline struct xfs_ag_resv *
···
 
 extern void	xfs_uuid_table_free(void);
 extern int	xfs_log_sbcount(xfs_mount_t *);
-extern __uint64_t xfs_default_resblks(xfs_mount_t *mp);
+extern uint64_t xfs_default_resblks(xfs_mount_t *mp);
 extern int	xfs_mountfs(xfs_mount_t *mp);
 extern int	xfs_initialize_perag(xfs_mount_t *mp, xfs_agnumber_t agcount,
 				     xfs_agnumber_t *maxagi);
···
 extern int	xfs_readsb(xfs_mount_t *, int);
 extern void	xfs_freesb(xfs_mount_t *);
 extern bool	xfs_fs_writable(struct xfs_mount *mp, int level);
-extern int	xfs_sb_validate_fsb_count(struct xfs_sb *, __uint64_t);
+extern int	xfs_sb_validate_fsb_count(struct xfs_sb *, uint64_t);
 
 extern int	xfs_dev_is_read_only(struct xfs_mount *, char *);
 

fs/xfs/xfs_qm.c

···
 	struct xfs_dquot	*dqp,
 	void			*data)
 {
+	struct xfs_mount	*mp = dqp->q_mount;
 	struct list_head	*buffer_list = data;
 	struct xfs_buf		*bp = NULL;
 	int			error = 0;
···
 	if (!XFS_DQ_IS_DIRTY(dqp))
 		goto out_unlock;
 
-	xfs_dqflock(dqp);
+	/*
+	 * The only way the dquot is already flush locked by the time quotacheck
+	 * gets here is if reclaim flushed it before the dqadjust walk dirtied
+	 * it for the final time. Quotacheck collects all dquot bufs in the
+	 * local delwri queue before dquots are dirtied, so reclaim can't have
+	 * possibly queued it for I/O. The only way out is to push the buffer to
+	 * cycle the flush lock.
+	 */
+	if (!xfs_dqflock_nowait(dqp)) {
+		/* buf is pinned in-core by delwri list */
+		DEFINE_SINGLE_BUF_MAP(map, dqp->q_blkno,
+				      mp->m_quotainfo->qi_dqchunklen);
+		bp = _xfs_buf_find(mp->m_ddev_targp, &map, 1, 0, NULL);
+		if (!bp) {
+			error = -EINVAL;
+			goto out_unlock;
+		}
+		xfs_buf_unlock(bp);
+
+		xfs_buf_delwri_pushbuf(bp, buffer_list);
+		xfs_buf_rele(bp);
+
+		error = -EAGAIN;
+		goto out_unlock;
+	}
+
 	error = xfs_qm_dqflush(dqp, &bp);
 	if (error)
 		goto out_unlock;

fs/xfs/xfs_qm_bhv.c

···
 	struct kstatfs		*statp,
 	struct xfs_dquot	*dqp)
 {
-	__uint64_t		limit;
+	uint64_t		limit;
 
 	limit = dqp->q_core.d_blk_softlimit ?
 		be64_to_cpu(dqp->q_core.d_blk_softlimit) :

fs/xfs/xfs_quotaops.c

···
 	/* ID may be different, so convert back what we got */
 	*qid = make_kqid(current_user_ns(), qid->type, id);
 	return 0;
-	
 }
 
 STATIC int

fs/xfs/xfs_reflink.c

···
 int
 xfs_reflink_find_shared(
 	struct xfs_mount	*mp,
+	struct xfs_trans	*tp,
 	xfs_agnumber_t		agno,
 	xfs_agblock_t		agbno,
 	xfs_extlen_t		aglen,
···
 	struct xfs_btree_cur	*cur;
 	int			error;
 
-	error = xfs_alloc_read_agf(mp, NULL, agno, 0, &agbp);
+	error = xfs_alloc_read_agf(mp, tp, agno, 0, &agbp);
 	if (error)
 		return error;
 
-	cur = xfs_refcountbt_init_cursor(mp, NULL, agbp, agno, NULL);
+	cur = xfs_refcountbt_init_cursor(mp, tp, agbp, agno, NULL);
 
 	error = xfs_refcount_find_shared(cur, agbno, aglen, fbno, flen,
 			find_end_of_shared);
 
 	xfs_btree_del_cursor(cur, error ? XFS_BTREE_ERROR : XFS_BTREE_NOERROR);
 
-	xfs_buf_relse(agbp);
+	xfs_trans_brelse(tp, agbp);
 	return error;
 }
 
···
 	agbno = XFS_FSB_TO_AGBNO(ip->i_mount, irec->br_startblock);
 	aglen = irec->br_blockcount;
 
-	error = xfs_reflink_find_shared(ip->i_mount, agno, agbno,
+	error = xfs_reflink_find_shared(ip->i_mount, NULL, agno, agbno,
 			aglen, &fbno, &flen, true);
 	if (error)
 		return error;
···
 			agbno = XFS_FSB_TO_AGBNO(mp, map[1].br_startblock);
 			aglen = map[1].br_blockcount;
 
-			error = xfs_reflink_find_shared(mp, agno, agbno, aglen,
-					&rbno, &rlen, true);
+			error = xfs_reflink_find_shared(mp, NULL, agno, agbno,
+					aglen, &rbno, &rlen, true);
 			if (error)
 				goto out;
 			if (rbno == NULLAGBLOCK)
···
 	return error;
 }
 
+/* Does this inode need the reflink flag? */
+int
+xfs_reflink_inode_has_shared_extents(
+	struct xfs_trans		*tp,
+	struct xfs_inode		*ip,
+	bool				*has_shared)
+{
+	struct xfs_bmbt_irec		got;
+	struct xfs_mount		*mp = ip->i_mount;
+	struct xfs_ifork		*ifp;
+	xfs_agnumber_t			agno;
+	xfs_agblock_t			agbno;
+	xfs_extlen_t			aglen;
+	xfs_agblock_t			rbno;
+	xfs_extlen_t			rlen;
+	xfs_extnum_t			idx;
+	bool				found;
+	int				error;
+
+	ifp = XFS_IFORK_PTR(ip, XFS_DATA_FORK);
+	if (!(ifp->if_flags & XFS_IFEXTENTS)) {
+		error = xfs_iread_extents(tp, ip, XFS_DATA_FORK);
+		if (error)
+			return error;
+	}
+
+	*has_shared = false;
+	found = xfs_iext_lookup_extent(ip, ifp, 0, &idx, &got);
+	while (found) {
+		if (isnullstartblock(got.br_startblock) ||
+		    got.br_state != XFS_EXT_NORM)
+			goto next;
+		agno = XFS_FSB_TO_AGNO(mp, got.br_startblock);
+		agbno = XFS_FSB_TO_AGBNO(mp, got.br_startblock);
+		aglen = got.br_blockcount;
+
+		error = xfs_reflink_find_shared(mp, tp, agno, agbno, aglen,
+				&rbno, &rlen, false);
+		if (error)
+			return error;
+		/* Is there still a shared block here? */
+		if (rbno != NULLAGBLOCK) {
+			*has_shared = true;
+			return 0;
+		}
+next:
+		found = xfs_iext_get_extent(ifp, ++idx, &got);
+	}
+
+	return 0;
+}
+
 /* Clear the inode reflink flag if there are no shared extents. */
 int
 xfs_reflink_clear_inode_flag(
 	struct xfs_inode	*ip,
 	struct xfs_trans	**tpp)
 {
-	struct xfs_mount	*mp = ip->i_mount;
-	xfs_fileoff_t		fbno;
-	xfs_filblks_t		end;
-	xfs_agnumber_t		agno;
-	xfs_agblock_t		agbno;
-	xfs_extlen_t		aglen;
-	xfs_agblock_t		rbno;
-	xfs_extlen_t		rlen;
-	struct xfs_bmbt_irec	map;
-	int			nmaps;
+	bool			needs_flag;
 	int			error = 0;
 
 	ASSERT(xfs_is_reflink_inode(ip));
 
-	fbno = 0;
-	end = XFS_B_TO_FSB(mp, i_size_read(VFS_I(ip)));
-	while (end - fbno > 0) {
-		nmaps = 1;
-		/*
-		 * Look for extents in the file.  Skip holes, delalloc, or
-		 * unwritten extents; they can't be reflinked.
-		 */
-		error = xfs_bmapi_read(ip, fbno, end - fbno, &map, &nmaps, 0);
-		if (error)
-			return error;
-		if (nmaps == 0)
-			break;
-		if (!xfs_bmap_is_real_extent(&map))
-			goto next;
-
-		agno = XFS_FSB_TO_AGNO(mp, map.br_startblock);
-		agbno = XFS_FSB_TO_AGBNO(mp, map.br_startblock);
-		aglen = map.br_blockcount;
-
-		error = xfs_reflink_find_shared(mp, agno, agbno, aglen,
-				&rbno, &rlen, false);
-		if (error)
-			return error;
-		/* Is there still a shared block here? */
-		if (rbno != NULLAGBLOCK)
-			return 0;
-next:
-		fbno = map.br_startoff + map.br_blockcount;
-	}
+	error = xfs_reflink_inode_has_shared_extents(*tpp, ip, &needs_flag);
+	if (error || needs_flag)
+		return error;
 
 	/*
 	 * We didn't find any shared blocks so turn off the reflink flag.

fs/xfs/xfs_reflink.h

···
 #ifndef __XFS_REFLINK_H
 #define __XFS_REFLINK_H 1
 
-extern int xfs_reflink_find_shared(struct xfs_mount *mp, xfs_agnumber_t agno,
-		xfs_agblock_t agbno, xfs_extlen_t aglen, xfs_agblock_t *fbno,
-		xfs_extlen_t *flen, bool find_maximal);
+extern int xfs_reflink_find_shared(struct xfs_mount *mp, struct xfs_trans *tp,
+		xfs_agnumber_t agno, xfs_agblock_t agbno, xfs_extlen_t aglen,
+		xfs_agblock_t *fbno, xfs_extlen_t *flen, bool find_maximal);
 extern int xfs_reflink_trim_around_shared(struct xfs_inode *ip,
 		struct xfs_bmbt_irec *irec, bool *shared, bool *trimmed);
 
···
 extern int xfs_reflink_recover_cow(struct xfs_mount *mp);
 extern int xfs_reflink_remap_range(struct file *file_in, loff_t pos_in,
 		struct file *file_out, loff_t pos_out, u64 len, bool is_dedupe);
+extern int xfs_reflink_inode_has_shared_extents(struct xfs_trans *tp,
+		struct xfs_inode *ip, bool *has_shared);
 extern int xfs_reflink_clear_inode_flag(struct xfs_inode *ip,
 		struct xfs_trans **tpp);
 extern int xfs_reflink_unshare(struct xfs_inode *ip, xfs_off_t offset,

fs/xfs/xfs_rtalloc.c

···
 {
 	xfs_rtblock_t	b;		/* result block */
 	int		log2;		/* log of sequence number */
-	__uint64_t	resid;		/* residual after log removed */
-	__uint64_t	seq;		/* sequence number of file creation */
-	__uint64_t	*seqp;		/* pointer to seqno in inode */
+	uint64_t	resid;		/* residual after log removed */
+	uint64_t	seq;		/* sequence number of file creation */
+	uint64_t	*seqp;		/* pointer to seqno in inode */
 
 	ASSERT(xfs_isilocked(mp->m_rbmip, XFS_ILOCK_EXCL));
 
-	seqp = (__uint64_t *)&VFS_I(mp->m_rbmip)->i_atime;
+	seqp = (uint64_t *)&VFS_I(mp->m_rbmip)->i_atime;
 	if (!(mp->m_rbmip->i_d.di_flags & XFS_DIFLAG_NEWRTBM)) {
 		mp->m_rbmip->i_d.di_flags |= XFS_DIFLAG_NEWRTBM;
 		*seqp = 0;

fs/xfs/xfs_rtalloc.h

···
 /*
  * From xfs_rtbitmap.c
  */
+int xfs_rtbuf_get(struct xfs_mount *mp, struct xfs_trans *tp,
+		  xfs_rtblock_t block, int issum, struct xfs_buf **bpp);
 int xfs_rtcheck_range(struct xfs_mount *mp, struct xfs_trans *tp,
 		      xfs_rtblock_t start, xfs_extlen_t len, int val,
 		      xfs_rtblock_t *new, int *stat);
···
 # define xfs_growfs_rt(mp,in)                           (ENOSYS)
 # define xfs_rtalloc_query_range(t,l,h,f,p)             (ENOSYS)
 # define xfs_rtalloc_query_all(t,f,p)                   (ENOSYS)
+# define xfs_rtbuf_get(m,t,b,i,p)                       (ENOSYS)
 static inline int		/* error */
 xfs_rtmount_init(
 	xfs_mount_t	*mp)	/* file system mount structure */

fs/xfs/xfs_stats.c

···
 {
 	int		i, j;
 	int		len = 0;
-	__uint64_t	xs_xstrat_bytes = 0;
-	__uint64_t	xs_write_bytes = 0;
-	__uint64_t	xs_read_bytes = 0;
+	uint64_t	xs_xstrat_bytes = 0;
+	uint64_t	xs_write_bytes = 0;
+	uint64_t	xs_read_bytes = 0;
 
 	static const struct xstats_entry {
 		char	*desc;
···
 void xfs_stats_clearall(struct xfsstats __percpu *stats)
 {
 	int		c;
-	__uint32_t	vn_active;
+	uint32_t	vn_active;
 
 	xfs_notice(NULL, "Clearing xfsstats");
 	for_each_possible_cpu(c) {

fs/xfs/xfs_stats.h

···
  */
 struct __xfsstats {
 # define XFSSTAT_END_EXTENT_ALLOC	4
-	__uint32_t		xs_allocx;
-	__uint32_t		xs_allocb;
-	__uint32_t		xs_freex;
-	__uint32_t		xs_freeb;
+	uint32_t		xs_allocx;
+	uint32_t		xs_allocb;
+	uint32_t		xs_freex;
+	uint32_t		xs_freeb;
 # define XFSSTAT_END_ALLOC_BTREE	(XFSSTAT_END_EXTENT_ALLOC+4)
-	__uint32_t		xs_abt_lookup;
-	__uint32_t		xs_abt_compare;
-	__uint32_t		xs_abt_insrec;
-	__uint32_t		xs_abt_delrec;
+	uint32_t		xs_abt_lookup;
+	uint32_t		xs_abt_compare;
+	uint32_t		xs_abt_insrec;
+	uint32_t		xs_abt_delrec;
 # define XFSSTAT_END_BLOCK_MAPPING	(XFSSTAT_END_ALLOC_BTREE+7)
-	__uint32_t		xs_blk_mapr;
-	__uint32_t		xs_blk_mapw;
-	__uint32_t		xs_blk_unmap;
-	__uint32_t		xs_add_exlist;
-	__uint32_t		xs_del_exlist;
-	__uint32_t		xs_look_exlist;
-	__uint32_t		xs_cmp_exlist;
+	uint32_t		xs_blk_mapr;
+	uint32_t		xs_blk_mapw;
+	uint32_t		xs_blk_unmap;
+	uint32_t		xs_add_exlist;
+	uint32_t		xs_del_exlist;
+	uint32_t		xs_look_exlist;
+	uint32_t		xs_cmp_exlist;
 # define XFSSTAT_END_BLOCK_MAP_BTREE	(XFSSTAT_END_BLOCK_MAPPING+4)
-	__uint32_t		xs_bmbt_lookup;
-	__uint32_t		xs_bmbt_compare;
-	__uint32_t		xs_bmbt_insrec;
-	__uint32_t		xs_bmbt_delrec;
+	uint32_t		xs_bmbt_lookup;
+	uint32_t		xs_bmbt_compare;
+	uint32_t		xs_bmbt_insrec;
+	uint32_t		xs_bmbt_delrec;
 # define XFSSTAT_END_DIRECTORY_OPS	(XFSSTAT_END_BLOCK_MAP_BTREE+4)
-	__uint32_t		xs_dir_lookup;
-	__uint32_t		xs_dir_create;
-	__uint32_t		xs_dir_remove;
-	__uint32_t		xs_dir_getdents;
+	uint32_t		xs_dir_lookup;
+	uint32_t		xs_dir_create;
+	uint32_t		xs_dir_remove;
+	uint32_t		xs_dir_getdents;
 # define XFSSTAT_END_TRANSACTIONS	(XFSSTAT_END_DIRECTORY_OPS+3)
-	__uint32_t		xs_trans_sync;
-	__uint32_t		xs_trans_async;
-	__uint32_t		xs_trans_empty;
+	uint32_t		xs_trans_sync;
+	uint32_t		xs_trans_async;
+	uint32_t		xs_trans_empty;
 # define XFSSTAT_END_INODE_OPS		(XFSSTAT_END_TRANSACTIONS+7)
-	__uint32_t		xs_ig_attempts;
-	__uint32_t		xs_ig_found;
-	__uint32_t		xs_ig_frecycle;
-	__uint32_t		xs_ig_missed;
-	__uint32_t		xs_ig_dup;
-	__uint32_t		xs_ig_reclaims;
-	__uint32_t		xs_ig_attrchg;
+	uint32_t		xs_ig_attempts;
+	uint32_t		xs_ig_found;
+	uint32_t		xs_ig_frecycle;
+	uint32_t		xs_ig_missed;
+	uint32_t		xs_ig_dup;
+	uint32_t		xs_ig_reclaims;
+	uint32_t		xs_ig_attrchg;
 # define XFSSTAT_END_LOG_OPS		(XFSSTAT_END_INODE_OPS+5)
-	__uint32_t		xs_log_writes;
-	__uint32_t		xs_log_blocks;
-	__uint32_t		xs_log_noiclogs;
-	__uint32_t		xs_log_force;
-	__uint32_t		xs_log_force_sleep;
+	uint32_t		xs_log_writes;
+	uint32_t		xs_log_blocks;
+	uint32_t		xs_log_noiclogs;
+	uint32_t		xs_log_force;
+	uint32_t		xs_log_force_sleep;
 # define XFSSTAT_END_TAIL_PUSHING	(XFSSTAT_END_LOG_OPS+10)
-	__uint32_t		xs_try_logspace;
-	__uint32_t		xs_sleep_logspace;
-	__uint32_t		xs_push_ail;
-	__uint32_t		xs_push_ail_success;
-	__uint32_t		xs_push_ail_pushbuf;
-	__uint32_t		xs_push_ail_pinned;
-	__uint32_t		xs_push_ail_locked;
-	__uint32_t		xs_push_ail_flushing;
-	__uint32_t		xs_push_ail_restarts;
-	__uint32_t		xs_push_ail_flush;
+	uint32_t		xs_try_logspace;
+	uint32_t		xs_sleep_logspace;
+	uint32_t		xs_push_ail;
+	uint32_t		xs_push_ail_success;
+	uint32_t		xs_push_ail_pushbuf;
+	uint32_t		xs_push_ail_pinned;
+	uint32_t		xs_push_ail_locked;
+	uint32_t		xs_push_ail_flushing;
+	uint32_t		xs_push_ail_restarts;
+	uint32_t		xs_push_ail_flush;
 # define XFSSTAT_END_WRITE_CONVERT	(XFSSTAT_END_TAIL_PUSHING+2)
-	__uint32_t		xs_xstrat_quick;
-	__uint32_t		xs_xstrat_split;
+	uint32_t		xs_xstrat_quick;
+	uint32_t		xs_xstrat_split;
 # define XFSSTAT_END_READ_WRITE_OPS	(XFSSTAT_END_WRITE_CONVERT+2)
-	__uint32_t		xs_write_calls;
-	__uint32_t		xs_read_calls;
+	uint32_t		xs_write_calls;
+	uint32_t		xs_read_calls;
 # define XFSSTAT_END_ATTRIBUTE_OPS	(XFSSTAT_END_READ_WRITE_OPS+4)
-	__uint32_t		xs_attr_get;
-	__uint32_t		xs_attr_set;
-	__uint32_t		xs_attr_remove;
-	__uint32_t		xs_attr_list;
+	uint32_t		xs_attr_get;
+	uint32_t		xs_attr_set;
+	uint32_t		xs_attr_remove;
+	uint32_t		xs_attr_list;
 # define XFSSTAT_END_INODE_CLUSTER	(XFSSTAT_END_ATTRIBUTE_OPS+3)
-	__uint32_t		xs_iflush_count;
-	__uint32_t		xs_icluster_flushcnt;
-	__uint32_t		xs_icluster_flushinode;
+	uint32_t		xs_iflush_count;
+	uint32_t		xs_icluster_flushcnt;
+	uint32_t		xs_icluster_flushinode;
 # define XFSSTAT_END_VNODE_OPS		(XFSSTAT_END_INODE_CLUSTER+8)
-	__uint32_t		vn_active;	/* # vnodes not on free lists */
-	__uint32_t		vn_alloc;	/* # times vn_alloc called */
-	__uint32_t		vn_get;		/* # times vn_get called */
-	__uint32_t		vn_hold;	/* # times vn_hold called */
-	__uint32_t		vn_rele;	/* # times vn_rele called */
-	__uint32_t		vn_reclaim;	/* # times vn_reclaim called */
-	__uint32_t		vn_remove;	/* # times vn_remove called */
-	__uint32_t		vn_free;	/* # times vn_free called */
+	uint32_t		vn_active;	/* # vnodes not on free lists */
+	uint32_t		vn_alloc;	/* # times vn_alloc called */
+	uint32_t		vn_get;		/* # times vn_get called */
+	uint32_t		vn_hold;	/* # times vn_hold called */
+	uint32_t		vn_rele;	/* # times vn_rele called */
+	uint32_t		vn_reclaim;	/* # times vn_reclaim called */
+	uint32_t		vn_remove;	/* # times vn_remove called */
+	uint32_t		vn_free;	/* # times vn_free called */
 #define XFSSTAT_END_BUF			(XFSSTAT_END_VNODE_OPS+9)
-	__uint32_t		xb_get;
-	__uint32_t		xb_create;
-	__uint32_t		xb_get_locked;
-	__uint32_t		xb_get_locked_waited;
-	__uint32_t		xb_busy_locked;
-	__uint32_t		xb_miss_locked;
-	__uint32_t		xb_page_retries;
-	__uint32_t		xb_page_found;
-	__uint32_t		xb_get_read;
+	uint32_t		xb_get;
+	uint32_t		xb_create;
+	uint32_t		xb_get_locked;
+	uint32_t		xb_get_locked_waited;
+	uint32_t		xb_busy_locked;
+	uint32_t		xb_miss_locked;
+	uint32_t		xb_page_retries;
+	uint32_t		xb_page_found;
+	uint32_t		xb_get_read;
 /* Version 2 btree counters */
 #define XFSSTAT_END_ABTB_V2		(XFSSTAT_END_BUF + __XBTS_MAX)
-	__uint32_t		xs_abtb_2[__XBTS_MAX];
+	uint32_t		xs_abtb_2[__XBTS_MAX];
 #define XFSSTAT_END_ABTC_V2		(XFSSTAT_END_ABTB_V2 + __XBTS_MAX)
-	__uint32_t		xs_abtc_2[__XBTS_MAX];
+	uint32_t		xs_abtc_2[__XBTS_MAX];
 #define XFSSTAT_END_BMBT_V2		(XFSSTAT_END_ABTC_V2 + __XBTS_MAX)
-	__uint32_t		xs_bmbt_2[__XBTS_MAX];
+	uint32_t		xs_bmbt_2[__XBTS_MAX];
 #define XFSSTAT_END_IBT_V2		(XFSSTAT_END_BMBT_V2 + __XBTS_MAX)
-	__uint32_t		xs_ibt_2[__XBTS_MAX];
+	uint32_t		xs_ibt_2[__XBTS_MAX];
 #define XFSSTAT_END_FIBT_V2		(XFSSTAT_END_IBT_V2 + __XBTS_MAX)
-	__uint32_t		xs_fibt_2[__XBTS_MAX];
+	uint32_t		xs_fibt_2[__XBTS_MAX];
 #define XFSSTAT_END_RMAP_V2		(XFSSTAT_END_FIBT_V2 + __XBTS_MAX)
-	__uint32_t		xs_rmap_2[__XBTS_MAX];
+	uint32_t		xs_rmap_2[__XBTS_MAX];
 #define XFSSTAT_END_REFCOUNT		(XFSSTAT_END_RMAP_V2 + __XBTS_MAX)
-	__uint32_t		xs_refcbt_2[__XBTS_MAX];
+	uint32_t		xs_refcbt_2[__XBTS_MAX];
 #define XFSSTAT_END_XQMSTAT		(XFSSTAT_END_REFCOUNT + 6)
-	__uint32_t		xs_qm_dqreclaims;
-	__uint32_t		xs_qm_dqreclaim_misses;
-	__uint32_t		xs_qm_dquot_dups;
-	__uint32_t		xs_qm_dqcachemisses;
-	__uint32_t		xs_qm_dqcachehits;
-	__uint32_t		xs_qm_dqwants;
+	uint32_t		xs_qm_dqreclaims;
+	uint32_t		xs_qm_dqreclaim_misses;
+	uint32_t		xs_qm_dquot_dups;
+	uint32_t		xs_qm_dqcachemisses;
+	uint32_t		xs_qm_dqcachehits;
+	uint32_t		xs_qm_dqwants;
 #define XFSSTAT_END_QM			(XFSSTAT_END_XQMSTAT+2)
-	__uint32_t		xs_qm_dquot;
-	__uint32_t		xs_qm_dquot_unused;
+	uint32_t		xs_qm_dquot;
+	uint32_t		xs_qm_dquot_unused;
 /* Extra precision counters */
-	__uint64_t		xs_xstrat_bytes;
-	__uint64_t		xs_write_bytes;
-	__uint64_t		xs_read_bytes;
+	uint64_t		xs_xstrat_bytes;
+	uint64_t		xs_write_bytes;
+	uint64_t		xs_read_bytes;
 };
 
 struct xfsstats {
···
  * simple wrapper for getting the array index of s struct member offset
  */
 #define XFS_STATS_CALC_INDEX(member)	\
-	(offsetof(struct __xfsstats, member) / (int)sizeof(__uint32_t))
+	(offsetof(struct __xfsstats, member) / (int)sizeof(uint32_t))
 
 
 int xfs_stats_format(struct xfsstats __percpu *stats, char *buf);

fs/xfs/xfs_super.c

···
 	int			dsunit = 0;
 	int			dswidth = 0;
 	int			iosize = 0;
-	__uint8_t		iosizelog = 0;
+	uint8_t			iosizelog = 0;
 
 	/*
 	 * set up the mount name first so all the errors will refer to the
···
 
 	return 0;
 }
-static __uint64_t
+static uint64_t
 xfs_max_file_offset(
 	unsigned int		blockshift)
 {
···
 # endif
 #endif
 
-	return (((__uint64_t)pagefactor) << bitshift) - 1;
+	return (((uint64_t)pagefactor) << bitshift) - 1;
 }
 
 /*
···
 	 * the max inode percentage.  Used only for inode32.
 	 */
 	if (mp->m_maxicount) {
-		__uint64_t	icount;
+		uint64_t	icount;
 
 		icount = sbp->sb_dblocks * sbp->sb_imax_pct;
 		do_div(icount, 100);
···
 	struct xfs_mount	*mp = XFS_M(dentry->d_sb);
 	xfs_sb_t		*sbp = &mp->m_sb;
 	struct xfs_inode	*ip = XFS_I(d_inode(dentry));
-	__uint64_t		fakeinos, id;
-	__uint64_t		icount;
-	__uint64_t		ifree;
-	__uint64_t		fdblocks;
+	uint64_t		fakeinos, id;
+	uint64_t		icount;
+	uint64_t		ifree;
+	uint64_t		fdblocks;
 	xfs_extlen_t		lsize;
-	__int64_t		ffree;
+	int64_t			ffree;
 
 	statp->f_type = XFS_SB_MAGIC;
 	statp->f_namelen = MAXNAMELEN - 1;
···
 	statp->f_bavail = statp->f_bfree;
 
 	fakeinos = statp->f_bfree << sbp->sb_inopblog;
-	statp->f_files = MIN(icount + fakeinos, (__uint64_t)XFS_MAXINUMBER);
+	statp->f_files = MIN(icount + fakeinos, (uint64_t)XFS_MAXINUMBER);
 	if (mp->m_maxicount)
 		statp->f_files = min_t(typeof(statp->f_files),
 					statp->f_files,
···
 
 	/* make sure statp->f_ffree does not underflow */
 	ffree = statp->f_files - (icount - ifree);
-	statp->f_ffree = max_t(__int64_t, ffree, 0);
+	statp->f_ffree = max_t(int64_t, ffree, 0);
 
 
 	if ((ip->i_d.di_flags & XFS_DIFLAG_PROJINHERIT) &&
···
 STATIC void
 xfs_save_resvblks(struct xfs_mount *mp)
 {
-	__uint64_t resblks = 0;
+	uint64_t resblks = 0;
 
 	mp->m_resblks_save = mp->m_resblks;
 	xfs_reserve_blocks(mp, &resblks, NULL);
···
 STATIC void
 xfs_restore_resvblks(struct xfs_mount *mp)
 {
-	__uint64_t resblks;
+	uint64_t resblks;
 
 	if (mp->m_resblks_save) {
 		resblks = mp->m_resblks_save;

fs/xfs/xfs_symlink.c

···
 #include "xfs_log.h"
 
 /* ----- Kernel only functions below ----- */
-STATIC int
-xfs_readlink_bmap(
+int
+xfs_readlink_bmap_ilocked(
 	struct xfs_inode	*ip,
 	char			*link)
 {
···
 	if (!pathlen)
 		goto out;
 
-	if (pathlen < 0 || pathlen > MAXPATHLEN) {
+	if (pathlen < 0 || pathlen > XFS_SYMLINK_MAXLEN) {
 		xfs_alert(mp, "%s: inode (%llu) bad symlink length (%lld)",
 			 __func__, (unsigned long long) ip->i_ino,
 			 (long long) pathlen);
···
 	}
 
 
-	error = xfs_readlink_bmap(ip, link);
+	error = xfs_readlink_bmap_ilocked(ip, link);
 
  out:
 	xfs_iunlock(ip, XFS_ILOCK_SHARED);
···
 	 * Check component lengths of the target path name.
 	 */
 	pathlen = strlen(target_path);
-	if (pathlen >= MAXPATHLEN)      /* total string too long */
+	if (pathlen >= XFS_SYMLINK_MAXLEN)      /* total string too long */
 		return -ENAMETOOLONG;
 
 	udqp = gdqp = NULL;
···
 		return 0;
 	}
 
-	if (pathlen < 0 || pathlen > MAXPATHLEN) {
+	if (pathlen < 0 || pathlen > XFS_SYMLINK_MAXLEN) {
 		xfs_alert(mp, "%s: inode (0x%llx) bad symlink length (%d)",
 			 __func__, (unsigned long long)ip->i_ino, pathlen);
 		xfs_iunlock(ip, XFS_ILOCK_EXCL);

fs/xfs/xfs_symlink.h

···
 
 int xfs_symlink(struct xfs_inode *dp, struct xfs_name *link_name,
 		const char *target_path, umode_t mode, struct xfs_inode **ipp);
+int xfs_readlink_bmap_ilocked(struct xfs_inode *ip, char *link);
 int xfs_readlink(struct xfs_inode *ip, char *link);
 int xfs_inactive_symlink(struct xfs_inode *ip);
 

fs/xfs/xfs_sysctl.h

···
 
 struct xfs_globals {
 	int	log_recovery_delay;	/* log recovery delay (secs) */
+	bool	bug_on_assert;		/* BUG() the kernel on assert failure */
 };
 extern struct xfs_globals	xfs_globals;
 

fs/xfs/xfs_sysfs.c

···
 	return container_of(kobj, struct xfs_mount, m_kobj);
 }
 
-#ifdef DEBUG
-
-STATIC ssize_t
-drop_writes_store(
-	struct kobject		*kobject,
-	const char		*buf,
-	size_t			count)
-{
-	struct xfs_mount	*mp = to_mp(kobject);
-	int			ret;
-	int			val;
-
-	ret = kstrtoint(buf, 0, &val);
-	if (ret)
-		return ret;
-
-	if (val == 1)
-		mp->m_drop_writes = true;
-	else if (val == 0)
-		mp->m_drop_writes = false;
-	else
-		return -EINVAL;
-
-	return count;
-}
-
-STATIC ssize_t
-drop_writes_show(
-	struct kobject		*kobject,
-	char			*buf)
-{
-	struct xfs_mount	*mp = to_mp(kobject);
-
-	return snprintf(buf, PAGE_SIZE, "%d\n", mp->m_drop_writes ? 1 : 0);
-}
-XFS_SYSFS_ATTR_RW(drop_writes);
-
-#endif /* DEBUG */
-
 static struct attribute *xfs_mp_attrs[] = {
-#ifdef DEBUG
-	ATTR_LIST(drop_writes),
-#endif
 	NULL,
 };
 
···
 
 #ifdef DEBUG
 /* debug */
+
+STATIC ssize_t
+bug_on_assert_store(
+	struct kobject		*kobject,
+	const char		*buf,
+	size_t			count)
+{
+	int			ret;
+	int			val;
+
+	ret = kstrtoint(buf, 0, &val);
+	if (ret)
+		return ret;
+
+	if (val == 1)
+		xfs_globals.bug_on_assert = true;
+	else if (val == 0)
+		xfs_globals.bug_on_assert = false;
+	else
+		return -EINVAL;
+
+	return count;
+}
+
+STATIC ssize_t
+bug_on_assert_show(
+	struct kobject		*kobject,
+	char			*buf)
+{
+	return snprintf(buf, PAGE_SIZE, "%d\n", xfs_globals.bug_on_assert ? 1 : 0);
+}
+XFS_SYSFS_ATTR_RW(bug_on_assert);
 
 STATIC ssize_t
 log_recovery_delay_store(
···
 XFS_SYSFS_ATTR_RW(log_recovery_delay);
 
 static struct attribute *xfs_dbg_attrs[] = {
+	ATTR_LIST(bug_on_assert),
 	ATTR_LIST(log_recovery_delay),
 	NULL,
 };
···
 }
 XFS_SYSFS_ATTR_RO(write_grant_head);
 
-#ifdef DEBUG
-STATIC ssize_t
-log_badcrc_factor_store(
-	struct kobject	*kobject,
-	const char	*buf,
-	size_t		count)
-{
-	struct xlog	*log = to_xlog(kobject);
-	int		ret;
-	uint32_t	val;
-
-	ret = kstrtouint(buf, 0, &val);
-	if (ret)
-		return ret;
-
-	log->l_badcrc_factor = val;
-
-	return count;
-}
-
-STATIC ssize_t
-log_badcrc_factor_show(
-	struct kobject	*kobject,
-	char		*buf)
-{
-	struct xlog	*log = to_xlog(kobject);
-
-	return snprintf(buf, PAGE_SIZE, "%d\n", log->l_badcrc_factor);
-}
-
-XFS_SYSFS_ATTR_RW(log_badcrc_factor);
-#endif	/* DEBUG */
-
 static struct attribute *xfs_log_attrs[] = {
 	ATTR_LIST(log_head_lsn),
 	ATTR_LIST(log_tail_lsn),
 	ATTR_LIST(reserve_grant_head),
 	ATTR_LIST(write_grant_head),
-#ifdef DEBUG
-	ATTR_LIST(log_badcrc_factor),
-#endif
 	NULL,
 };
 

fs/xfs/xfs_trace.h

···
 		  __print_flags(__entry->bmap_state, "|", XFS_BMAP_EXT_FLAGS),
 		  (long)__entry->idx,
 		  __entry->startoff,
-		  (__int64_t)__entry->startblock,
+		  (int64_t)__entry->startblock,
 		  __entry->blockcount,
 		  __entry->state,
 		  (char *)__entry->caller_ip)
···
 		  __print_flags(__entry->bmap_state, "|", XFS_BMAP_EXT_FLAGS),
 		  (long)__entry->idx,
 		  __entry->startoff,
-		  (__int64_t)__entry->startblock,
+		  (int64_t)__entry->startblock,
 		  __entry->blockcount,
 		  __entry->state,
 		  (char *)__entry->caller_ip)
···
 DEFINE_BUF_EVENT(xfs_buf_delwri_queue);
 DEFINE_BUF_EVENT(xfs_buf_delwri_queued);
 DEFINE_BUF_EVENT(xfs_buf_delwri_split);
+DEFINE_BUF_EVENT(xfs_buf_delwri_pushbuf);
 DEFINE_BUF_EVENT(xfs_buf_get_uncached);
 DEFINE_BUF_EVENT(xfs_buf_item_relse);
 DEFINE_BUF_EVENT(xfs_buf_item_iodone_async);
···
 		  __entry->count,
 		  __print_symbolic(__entry->type, XFS_IO_TYPES),
 		  __entry->startoff,
-		  (__int64_t)__entry->startblock,
+		  (int64_t)__entry->startblock,
 		  __entry->blockcount)
 )
 
···
 		  __entry->len,
 		  __entry->tbno,
 		  __entry->tlen)
-);
-
-TRACE_EVENT(xfs_trans_commit_lsn,
-	TP_PROTO(struct xfs_trans *trans),
-	TP_ARGS(trans),
-	TP_STRUCT__entry(
-		__field(dev_t, dev)
-		__field(struct xfs_trans *, tp)
-		__field(xfs_lsn_t, lsn)
-	),
-	TP_fast_assign(
-		__entry->dev = trans->t_mountp->m_super->s_dev;
-		__entry->tp = trans;
-		__entry->lsn = trans->t_commit_lsn;
-	),
-	TP_printk("dev %d:%d trans 0x%p commit_lsn 0x%llx",
-		  MAJOR(__entry->dev), MINOR(__entry->dev),
-		  __entry->tp,
-		  __entry->lsn)
 );
 
 TRACE_EVENT(xfs_agf,
···
 	TP_ARGS(log, buf_f),
 	TP_STRUCT__entry(
 		__field(dev_t, dev)
-		__field(__int64_t, blkno)
+		__field(int64_t, blkno)
 		__field(unsigned short, len)
 		__field(unsigned short, flags)
 		__field(unsigned short, size)
···
 		__field(int, fields)
 		__field(unsigned short, asize)
 		__field(unsigned short, dsize)
-		__field(__int64_t, blkno)
+		__field(int64_t, blkno)
 		__field(int, len)
 		__field(int, boffset)
 	),
···
 		__field(xfs_agnumber_t, agno)
 		__field(xfs_fsblock_t, bno)
 		__field(xfs_filblks_t, len)
-		__field(__uint64_t, owner)
-		__field(__uint64_t, offset)
+		__field(uint64_t, owner)
+		__field(uint64_t, offset)
 		__field(unsigned int, flags)
 	),
 	TP_fast_assign(
···
 		__field(dev_t, keydev)
 		__field(xfs_daddr_t, block)
 		__field(xfs_daddr_t, len)
-		__field(__uint64_t, owner)
-		__field(__uint64_t, offset)
-		__field(__uint64_t, flags)
+		__field(uint64_t, owner)
+		__field(uint64_t, offset)
+		__field(uint64_t, flags)
 	),
 	TP_fast_assign(
 		__entry->dev = mp->m_super->s_dev;

fs/xfs/xfs_trans.h

···
 	unsigned int		t_rtx_res;	/* # of rt extents resvd */
 	unsigned int		t_rtx_res_used;	/* # of resvd rt extents used */
 	struct xlog_ticket	*t_ticket;	/* log mgr ticket */
-	xfs_lsn_t		t_lsn;		/* log seq num of start of
-						 * transaction. */
-	xfs_lsn_t		t_commit_lsn;	/* log seq num of end of
-						 * transaction. */
 	struct xfs_mount	*t_mountp;	/* ptr to fs mount struct */
 	struct xfs_dquot_acct   *t_dqinfo;	/* acctg info for dquots */
 	unsigned int		t_flags;	/* misc flags */
···
 		struct xfs_rui_log_item *ruip);
 int xfs_trans_log_finish_rmap_update(struct xfs_trans *tp,
 		struct xfs_rud_log_item *rudp, enum xfs_rmap_intent_type type,
-		__uint64_t owner, int whichfork, xfs_fileoff_t startoff,
+		uint64_t owner, int whichfork, xfs_fileoff_t startoff,
 		xfs_fsblock_t startblock, xfs_filblks_t blockcount,
 		xfs_exntst_t state, struct xfs_btree_cur **pcur);
 
···
 		struct xfs_bud_log_item *rudp, struct xfs_defer_ops *dfops,
 		enum xfs_bmap_intent_type type, struct xfs_inode *ip,
 		int whichfork, xfs_fileoff_t startoff, xfs_fsblock_t startblock,
-		xfs_filblks_t blockcount, xfs_exntst_t state);
+		xfs_filblks_t *blockcount, xfs_exntst_t state);
 
 #endif	/* __XFS_TRANS_H__ */

fs/xfs/xfs_trans_bmap.c

···
 	int				whichfork,
 	xfs_fileoff_t			startoff,
 	xfs_fsblock_t			startblock,
-	xfs_filblks_t			blockcount,
+	xfs_filblks_t			*blockcount,
 	xfs_exntst_t			state)
 {
 	int				error;
···
 	void				**state)
 {
 	struct xfs_bmap_intent		*bmap;
+	xfs_filblks_t			count;
 	int				error;
 
 	bmap = container_of(item, struct xfs_bmap_intent, bi_list);
+	count = bmap->bi_bmap.br_blockcount;
 	error = xfs_trans_log_finish_bmap_update(tp, done_item, dop,
 			bmap->bi_type,
 			bmap->bi_owner, bmap->bi_whichfork,
 			bmap->bi_bmap.br_startoff,
 			bmap->bi_bmap.br_startblock,
-			bmap->bi_bmap.br_blockcount,
+			&count,
 			bmap->bi_bmap.br_state);
+	if (!error && count > 0) {
+		ASSERT(bmap->bi_type == XFS_BMAP_UNMAP);
+		bmap->bi_bmap.br_blockcount = count;
+		return -EAGAIN;
+	}
 	kmem_free(bmap);
 	return error;
 }

fs/xfs/xfs_trans_buf.c

···
 		 xfs_buf_t	*bp)
 {
 	xfs_buf_log_item_t	*bip;
+	int			freed;
 
 	/*
 	 * Default to a normal brelse() call if the tp is NULL.
···
 	/*
 	 * Drop our reference to the buf log item.
 	 */
-	atomic_dec(&bip->bli_refcount);
+	freed = atomic_dec_and_test(&bip->bli_refcount);
 
 	/*
-	 * If the buf item is not tracking data in the log, then
-	 * we must free it before releasing the buffer back to the
-	 * free pool.  Before releasing the buffer to the free pool,
-	 * clear the transaction pointer in b_fsprivate2 to dissolve
-	 * its relation to this transaction.
+	 * If the buf item is not tracking data in the log, then we must free it
+	 * before releasing the buffer back to the free pool.
+	 *
+	 * If the fs has shutdown and we dropped the last reference, it may fall
+	 * on us to release a (possibly dirty) bli if it never made it to the
+	 * AIL (e.g., the aborted unpin already happened and didn't release it
+	 * due to our reference). Since we're already shutdown and need xa_lock,
+	 * just force remove from the AIL and release the bli here.
 	 */
-	if (!xfs_buf_item_dirty(bip)) {
+	if (XFS_FORCED_SHUTDOWN(tp->t_mountp) && freed) {
+		xfs_trans_ail_remove(&bip->bli_item, SHUTDOWN_LOG_IO_ERROR);
+		xfs_buf_item_relse(bp);
+	} else if (!xfs_buf_item_dirty(bip)) {
 /***
 		ASSERT(bp->b_pincount == 0);
 ***/

fs/xfs/xfs_trans_rmap.c

···
 	struct xfs_trans		*tp,
 	struct xfs_rud_log_item		*rudp,
 	enum xfs_rmap_intent_type	type,
-	__uint64_t			owner,
+	uint64_t			owner,
 	int				whichfork,
 	xfs_fileoff_t			startoff,
 	xfs_fsblock_t			startblock,

include/linux/buffer_head.h

···
 			sector_t bblock, unsigned blocksize);
 int bh_uptodate_or_lock(struct buffer_head *bh);
 int bh_submit_read(struct buffer_head *bh);
+loff_t page_cache_seek_hole_data(struct inode *inode, loff_t offset,
+				 loff_t length, int whence);
 
 extern int buffer_heads_over_limit;
 

include/linux/iomap.h

···
 int iomap_page_mkwrite(struct vm_fault *vmf, const struct iomap_ops *ops);
 int iomap_fiemap(struct inode *inode, struct fiemap_extent_info *fieinfo,
 		loff_t start, loff_t len, const struct iomap_ops *ops);
+loff_t iomap_seek_hole(struct inode *inode, loff_t offset,
+		const struct iomap_ops *ops);
+loff_t iomap_seek_data(struct inode *inode, loff_t offset,
+		const struct iomap_ops *ops);
 
 /*
  * Flags for direct I/O ->end_io: