Merge tag 'f2fs-for-6.1-rc1' of git://git.kernel.org/pub/scm/linux/kernel/git/jaegeuk/f2fs

Pull f2fs updates from Jaegeuk Kim:
"This round looks fairly small comparing to the previous updates and
includes mostly minor bug fixes. Nevertheless, as we've still
interested in improving the stability, Chao added some debugging
methods to diagnoze subtle runtime inconsistency problem.

Enhancements:
- store all the corruption or failure reasons in superblock
- detect meta inode, summary info, and block address inconsistency
- increase the limit for reserve_root for low-end devices
- add the number of compressed IO in iostat

Bug fixes:
- DIO write fix for zoned devices
- do out-of-place writes for cold files
- fix some stat updates (FS_CP_DATA_IO, dirty page count)
- fix race condition on setting FI_NO_EXTENT flag
- fix data races when freezing super
- fix wrong continue condition check in GC
- do not allow ATGC for LFS mode

In addition, there're some code enhancement and clean-ups as usual"

* tag 'f2fs-for-6.1-rc1' of git://git.kernel.org/pub/scm/linux/kernel/git/jaegeuk/f2fs: (32 commits)
f2fs: change to use atomic_t type form sbi.atomic_files
f2fs: account swapfile inodes
f2fs: allow direct read for zoned device
f2fs: support recording errors into superblock
f2fs: support recording stop_checkpoint reason into super_block
f2fs: remove the unnecessary check in f2fs_xattr_fiemap
f2fs: introduce cp_status sysfs entry
f2fs: fix to detect corrupted meta ino
f2fs: fix to account FS_CP_DATA_IO correctly
f2fs: code clean and fix a type error
f2fs: add "c_len" into trace_f2fs_update_extent_tree_range for compressed file
f2fs: fix to do sanity check on summary info
f2fs: port to vfs{g,u}id_t and associated helpers
f2fs: fix to do sanity check on destination blkaddr during recovery
f2fs: let FI_OPU_WRITE override FADVISE_COLD_BIT
f2fs: fix race condition on setting FI_NO_EXTENT flag
f2fs: remove redundant check in f2fs_sanity_check_cluster
f2fs: add static init_idisk_time function to reduce the code
f2fs: fix typo
f2fs: fix wrong dirty page count when race between mmap and fallocate.
...

Documentation/ABI/testing/sysfs-fs-f2fs

···
 		0x4000 SBI_IS_FREEZING       freefs is in process
 		====== ===================== =================================
 
+What:		/sys/fs/f2fs/<disk>/stat/cp_status
+Date:		September 2022
+Contact:	"Chao Yu" <[e-mail]>
+Description:	Show status of f2fs checkpoint in real time.
+
+		=============================== ==============================
+		cp flag				value
+		CP_UMOUNT_FLAG			0x00000001
+		CP_ORPHAN_PRESENT_FLAG		0x00000002
+		CP_COMPACT_SUM_FLAG		0x00000004
+		CP_ERROR_FLAG			0x00000008
+		CP_FSCK_FLAG			0x00000010
+		CP_FASTBOOT_FLAG		0x00000020
+		CP_CRC_RECOVERY_FLAG		0x00000040
+		CP_NAT_BITS_FLAG		0x00000080
+		CP_TRIMMED_FLAG			0x00000100
+		CP_NOCRC_RECOVERY_FLAG		0x00000200
+		CP_LARGE_NAT_BITMAP_FLAG	0x00000400
+		CP_QUOTA_NEED_FSCK_FLAG		0x00000800
+		CP_DISABLED_FLAG		0x00001000
+		CP_DISABLED_QUICK_FLAG		0x00002000
+		CP_RESIZEFS_FLAG		0x00004000
+		=============================== ==============================
+
 What:		/sys/fs/f2fs/<disk>/ckpt_thread_ioprio
 Date:		January 2021
 Contact:	"Daeho Jeong" <[e-mail]>

fs/f2fs/acl.c

···
 		return error;
 	if (error == 0)
 		*acl = NULL;
-	if (!in_group_p(i_gid_into_mnt(mnt_userns, inode)) &&
+	if (!vfsgid_in_group_p(i_gid_into_vfsgid(mnt_userns, inode)) &&
 	    !capable_wrt_inode_uidgid(mnt_userns, inode, CAP_FSETID))
 		mode &= ~S_ISGID;
 	*mode_p = mode;

fs/f2fs/checkpoint.c

···
 static struct kmem_cache *ino_entry_slab;
 struct kmem_cache *f2fs_inode_entry_slab;
 
-void f2fs_stop_checkpoint(struct f2fs_sb_info *sbi, bool end_io)
+void f2fs_stop_checkpoint(struct f2fs_sb_info *sbi, bool end_io,
+						unsigned char reason)
 {
 	f2fs_build_fault_attr(sbi, 0, 0);
 	set_ckpt_flags(sbi, CP_ERROR_FLAG);
-	if (!end_io)
+	if (!end_io) {
 		f2fs_flush_merged_writes(sbi);
+
+		f2fs_handle_stop(sbi, reason);
+	}
 }
 
 /*
···
 		return ERR_PTR(err);
 	}
 
-	f2fs_update_iostat(sbi, FS_META_READ_IO, F2FS_BLKSIZE);
+	f2fs_update_iostat(sbi, NULL, FS_META_READ_IO, F2FS_BLKSIZE);
 
 	lock_page(page);
 	if (unlikely(page->mapping != mapping)) {
···
 		if (PTR_ERR(page) == -EIO &&
 				++count <= DEFAULT_RETRY_IO_COUNT)
 			goto retry;
-		f2fs_stop_checkpoint(sbi, false);
+		f2fs_stop_checkpoint(sbi, false, STOP_CP_REASON_META_PAGE);
 	}
 	return page;
 }
···
 	unsigned int segno, offset;
 	bool exist;
 
-	if (type != DATA_GENERIC_ENHANCE && type != DATA_GENERIC_ENHANCE_READ)
+	if (type == DATA_GENERIC)
 		return true;
 
 	segno = GET_SEGNO(sbi, blkaddr);
···
 	se = get_seg_entry(sbi, segno);
 
 	exist = f2fs_test_bit(offset, se->cur_valid_map);
+	if (exist && type == DATA_GENERIC_ENHANCE_UPDATE) {
+		f2fs_err(sbi, "Inconsistent error blkaddr:%u, sit bitmap:%d",
+			 blkaddr, exist);
+		set_sbi_flag(sbi, SBI_NEED_FSCK);
+		return exist;
+	}
+
 	if (!exist && type == DATA_GENERIC_ENHANCE) {
 		f2fs_err(sbi, "Inconsistent error blkaddr:%u, sit bitmap:%d",
 			 blkaddr, exist);
···
 	case DATA_GENERIC:
 	case DATA_GENERIC_ENHANCE:
 	case DATA_GENERIC_ENHANCE_READ:
+	case DATA_GENERIC_ENHANCE_UPDATE:
 		if (unlikely(blkaddr >= MAX_BLKADDR(sbi) ||
 				blkaddr < MAIN_BLKADDR(sbi))) {
 			f2fs_warn(sbi, "access invalid blkaddr:%u",
···
 		f2fs_put_page(page, err ? 1 : 0);
 
 		if (!err)
-			f2fs_update_iostat(sbi, FS_META_READ_IO, F2FS_BLKSIZE);
+			f2fs_update_iostat(sbi, NULL, FS_META_READ_IO,
+							F2FS_BLKSIZE);
 	}
 out:
 	blk_finish_plug(&plug);
···
 
 	if (!folio_test_uptodate(folio))
 		folio_mark_uptodate(folio);
-	if (!folio_test_dirty(folio)) {
-		filemap_dirty_folio(mapping, folio);
+	if (filemap_dirty_folio(mapping, folio)) {
 		inc_page_count(F2FS_M_SB(mapping), F2FS_DIRTY_META);
 		set_page_private_reference(&folio->page);
 		return true;
···
 	spin_unlock(&sbi->inode_lock[type]);
 }
 
-int f2fs_sync_dirty_inodes(struct f2fs_sb_info *sbi, enum inode_type type)
+int f2fs_sync_dirty_inodes(struct f2fs_sb_info *sbi, enum inode_type type,
+						bool from_cp)
 {
 	struct list_head *head;
 	struct inode *inode;
···
 	if (inode) {
 		unsigned long cur_ino = inode->i_ino;
 
-		F2FS_I(inode)->cp_task = current;
+		if (from_cp)
+			F2FS_I(inode)->cp_task = current;
+		F2FS_I(inode)->wb_task = current;
 
 		filemap_fdatawrite(inode->i_mapping);
 
-		F2FS_I(inode)->cp_task = NULL;
+		F2FS_I(inode)->wb_task = NULL;
+		if (from_cp)
+			F2FS_I(inode)->cp_task = NULL;
 
 		iput(inode);
 		/* We need to give cpu to another writers. */
···
 	/* write all the dirty dentry pages */
 	if (get_pages(sbi, F2FS_DIRTY_DENTS)) {
 		f2fs_unlock_all(sbi);
-		err = f2fs_sync_dirty_inodes(sbi, DIR_INODE);
+		err = f2fs_sync_dirty_inodes(sbi, DIR_INODE, true);
 		if (err)
 			return err;
 		cond_resched();
···
 void f2fs_stop_ckpt_thread(struct f2fs_sb_info *sbi)
 {
 	struct ckpt_req_control *cprc = &sbi->cprc_info;
+	struct task_struct *ckpt_task;
 
-	if (cprc->f2fs_issue_ckpt) {
-		struct task_struct *ckpt_task = cprc->f2fs_issue_ckpt;
+	if (!cprc->f2fs_issue_ckpt)
+		return;
 
-		cprc->f2fs_issue_ckpt = NULL;
-		kthread_stop(ckpt_task);
+	ckpt_task = cprc->f2fs_issue_ckpt;
+	cprc->f2fs_issue_ckpt = NULL;
+	kthread_stop(ckpt_task);
 
-		flush_remained_ckpt_reqs(sbi, NULL);
-	}
+	f2fs_flush_ckpt_thread(sbi);
+}
+
+void f2fs_flush_ckpt_thread(struct f2fs_sb_info *sbi)
+{
+	struct ckpt_req_control *cprc = &sbi->cprc_info;
+
+	flush_remained_ckpt_reqs(sbi, NULL);
+
+	/* Let's wait for the previous dispatched checkpoint. */
+	while (atomic_read(&cprc->queued_ckpt))
+		io_schedule_timeout(DEFAULT_IO_TIMEOUT);
 }
 
 void f2fs_init_ckpt_req_control(struct f2fs_sb_info *sbi)

fs/f2fs/compress.c

···
 
 	if (dic->clen > PAGE_SIZE * dic->nr_cpages - COMPRESS_HEADER_SIZE) {
 		ret = -EFSCORRUPTED;
+		f2fs_handle_error(sbi, ERROR_FAIL_DECOMPRESSION);
 		goto out_release;
 	}
 
···
 			reason = "[C|*|C|*]";
 			goto out;
 		}
-		if (compressed) {
-			if (!__is_valid_data_blkaddr(blkaddr)) {
-				if (!cluster_end)
-					cluster_end = i;
-				continue;
-			}
-			/* [COMPR_ADDR, NULL_ADDR or NEW_ADDR, valid_blkaddr] */
-			if (cluster_end) {
-				reason = "[C|N|N|V]";
-				goto out;
-			}
+		if (!__is_valid_data_blkaddr(blkaddr)) {
+			if (!cluster_end)
+				cluster_end = i;
+			continue;
+		}
+		/* [COMPR_ADDR, NULL_ADDR or NEW_ADDR, valid_blkaddr] */
+		if (cluster_end) {
+			reason = "[C|N|N|V]";
+			goto out;
 		}
 	}
 	return false;
···
 
 	if (f2fs_sanity_check_cluster(&dn)) {
 		ret = -EFSCORRUPTED;
+		f2fs_handle_error(F2FS_I_SB(inode), ERROR_CORRUPTED_CLUSTER);
 		goto fail;
 	}
 
···
 	if (!dic->cbuf)
 		return -ENOMEM;
 
-	if (cops->init_decompress_ctx) {
-		int ret = cops->init_decompress_ctx(dic);
-
-		if (ret)
-			return ret;
-	}
+	if (cops->init_decompress_ctx)
+		return cops->init_decompress_ctx(dic);
 
 	return 0;
 }
···
 
 void f2fs_invalidate_compress_pages(struct f2fs_sb_info *sbi, nid_t ino)
 {
-	struct address_space *mapping = sbi->compress_inode->i_mapping;
+	struct address_space *mapping = COMPRESS_MAPPING(sbi);
 	struct folio_batch fbatch;
 	pgoff_t index = 0;
 	pgoff_t end = MAX_BLKADDR(sbi);

fs/f2fs/data.c

···
 			mempool_free(page, sbi->write_io_dummy);
 
 			if (unlikely(bio->bi_status))
-				f2fs_stop_checkpoint(sbi, true);
+				f2fs_stop_checkpoint(sbi, true,
+						STOP_CP_REASON_WRITE_FAIL);
 			continue;
 		}
 
···
 		if (unlikely(bio->bi_status)) {
 			mapping_set_error(page->mapping, -EIO);
 			if (type == F2FS_WB_CP_DATA)
-				f2fs_stop_checkpoint(sbi, true);
+				f2fs_stop_checkpoint(sbi, true,
+						STOP_CP_REASON_WRITE_FAIL);
 		}
 
 		f2fs_bug_on(sbi, page->mapping == NODE_MAPPING(sbi) &&
···
 
 	if (!f2fs_is_valid_blkaddr(fio->sbi, fio->new_blkaddr,
 			fio->is_por ? META_POR : (__is_meta_io(fio) ?
-			META_GENERIC : DATA_GENERIC_ENHANCE)))
+			META_GENERIC : DATA_GENERIC_ENHANCE))) {
+		f2fs_handle_error(fio->sbi, ERROR_INVALID_BLKADDR);
 		return -EFSCORRUPTED;
+	}
 
 	trace_f2fs_submit_page_bio(page, fio);
 
···
 		wbc_account_cgroup_owner(fio->io_wbc, page, PAGE_SIZE);
 
 	inc_page_count(fio->sbi, is_read_io(fio->op) ?
-			__read_io_type(page): WB_DATA_TYPE(fio->page));
+			__read_io_type(page) : WB_DATA_TYPE(fio->page));
 
 	__submit_bio(fio->sbi, bio, fio->type);
 	return 0;
···
 			fio->encrypted_page : fio->page;
 
 	if (!f2fs_is_valid_blkaddr(fio->sbi, fio->new_blkaddr,
-			__is_meta_io(fio) ? META_GENERIC : DATA_GENERIC))
+			__is_meta_io(fio) ? META_GENERIC : DATA_GENERIC)) {
+		f2fs_handle_error(fio->sbi, ERROR_INVALID_BLKADDR);
 		return -EFSCORRUPTED;
+	}
 
 	trace_f2fs_submit_page_bio(page, fio);
 
···
 	}
 	ClearPageError(page);
 	inc_page_count(sbi, F2FS_RD_DATA);
-	f2fs_update_iostat(sbi, FS_DATA_READ_IO, F2FS_BLKSIZE);
+	f2fs_update_iostat(sbi, NULL, FS_DATA_READ_IO, F2FS_BLKSIZE);
 	__submit_bio(sbi, bio, DATA);
 	return 0;
 }
···
 		if (!f2fs_is_valid_blkaddr(F2FS_I_SB(inode), dn.data_blkaddr,
 						DATA_GENERIC_ENHANCE_READ)) {
 			err = -EFSCORRUPTED;
+			f2fs_handle_error(F2FS_I_SB(inode),
+						ERROR_INVALID_BLKADDR);
 			goto put_err;
 		}
 		goto got_it;
···
 						dn.data_blkaddr,
 						DATA_GENERIC_ENHANCE)) {
 		err = -EFSCORRUPTED;
+		f2fs_handle_error(F2FS_I_SB(inode),
+					ERROR_INVALID_BLKADDR);
 		goto put_err;
 	}
 got_it:
···
 	if (__is_valid_data_blkaddr(blkaddr) &&
 		!f2fs_is_valid_blkaddr(sbi, blkaddr, DATA_GENERIC_ENHANCE)) {
 		err = -EFSCORRUPTED;
+		f2fs_handle_error(sbi, ERROR_INVALID_BLKADDR);
 		goto sync_out;
 	}
 
···
 					(flag != F2FS_GET_BLOCK_FIEMAP ||
 					IS_ENABLED(CONFIG_F2FS_CHECK_FS))) {
 				err = -EFSCORRUPTED;
+				f2fs_handle_error(sbi,
+						ERROR_CORRUPTED_CLUSTER);
 				goto sync_out;
 			}
 			if (flag == F2FS_GET_BLOCK_BMAP) {
···
 
 		err = fiemap_fill_next_extent(fieinfo, 0, phys, len, flags);
 		trace_f2fs_fiemap(inode, 0, phys, len, flags, err);
-		if (err || err == 1)
+		if (err)
 			return err;
 	}
 
···
 		if (!f2fs_is_valid_blkaddr(F2FS_I_SB(inode), block_nr,
 						DATA_GENERIC_ENHANCE_READ)) {
 			ret = -EFSCORRUPTED;
+			f2fs_handle_error(F2FS_I_SB(inode),
+						ERROR_INVALID_BLKADDR);
 			goto out;
 		}
 	} else {
···
 		goto submit_and_realloc;
 
 	inc_page_count(F2FS_I_SB(inode), F2FS_RD_DATA);
-	f2fs_update_iostat(F2FS_I_SB(inode), FS_DATA_READ_IO, F2FS_BLKSIZE);
+	f2fs_update_iostat(F2FS_I_SB(inode), NULL, FS_DATA_READ_IO,
+							F2FS_BLKSIZE);
 	ClearPageError(page);
 	*last_block_in_bio = block_nr;
 	goto out;
···
 		refcount_inc(&dic->refcnt);
 
 		inc_page_count(sbi, F2FS_RD_DATA);
-		f2fs_update_iostat(sbi, FS_DATA_READ_IO, F2FS_BLKSIZE);
-		f2fs_update_iostat(sbi, FS_CDATA_READ_IO, F2FS_BLKSIZE);
+		f2fs_update_iostat(sbi, inode, FS_DATA_READ_IO, F2FS_BLKSIZE);
 		ClearPageError(page);
 		*last_block_in_bio = blkaddr;
 	}
···
 		return true;
 
 	/* if this is cold file, we should overwrite to avoid fragmentation */
-	if (file_is_cold(inode))
+	if (file_is_cold(inode) && !is_inode_flag_set(inode, FI_OPU_WRITE))
 		return true;
 
 	return check_inplace_update_policy(inode, fio);
···
 		fio->old_blkaddr = ei.blk + page->index - ei.fofs;
 
 		if (!f2fs_is_valid_blkaddr(fio->sbi, fio->old_blkaddr,
-						DATA_GENERIC_ENHANCE))
+						DATA_GENERIC_ENHANCE)) {
+			f2fs_handle_error(fio->sbi,
+						ERROR_INVALID_BLKADDR);
 			return -EFSCORRUPTED;
+		}
 
 		ipu_force = true;
 		fio->need_lock = LOCK_DONE;
···
 		!f2fs_is_valid_blkaddr(fio->sbi, fio->old_blkaddr,
 						DATA_GENERIC_ENHANCE)) {
 		err = -EFSCORRUPTED;
+		f2fs_handle_error(fio->sbi, ERROR_INVALID_BLKADDR);
 		goto out_writepage;
 	}
 
···
 	}
 	unlock_page(page);
 	if (!S_ISDIR(inode->i_mode) && !IS_NOQUOTA(inode) &&
-			!F2FS_I(inode)->cp_task && allow_balance)
+			!F2FS_I(inode)->wb_task && allow_balance)
 		f2fs_balance_fs(sbi, need_balance_fs);
 
 	if (unlikely(f2fs_cp_error(sbi))) {
···
 					struct writeback_control *wbc)
 {
 	/* to avoid deadlock in path of data flush */
-	if (F2FS_I(inode)->cp_task)
+	if (F2FS_I(inode)->wb_task)
 		return false;
 
 	if (!S_ISREG(inode->i_mode))
···
 		if (!f2fs_is_valid_blkaddr(sbi, blkaddr,
 				DATA_GENERIC_ENHANCE_READ)) {
 			err = -EFSCORRUPTED;
+			f2fs_handle_error(sbi, ERROR_INVALID_BLKADDR);
 			goto fail;
 		}
 		err = f2fs_submit_page_read(inode, page, blkaddr, 0, true);
···
 		folio_mark_uptodate(folio);
 	BUG_ON(folio_test_swapcache(folio));
 
-	if (!folio_test_dirty(folio)) {
-		filemap_dirty_folio(mapping, folio);
+	if (filemap_dirty_folio(mapping, folio)) {
 		f2fs_update_dirty_folio(inode, folio);
 		return true;
 	}
···
 	if (ret < 0)
 		return ret;
 
+	stat_inc_swapfile_inode(inode);
 	set_inode_flag(inode, FI_PIN_FILE);
 	f2fs_update_time(F2FS_I_SB(inode), REQ_TIME);
 	return ret;
···
 {
 	struct inode *inode = file_inode(file);
 
+	stat_dec_swapfile_inode(inode);
 	clear_inode_flag(inode, FI_PIN_FILE);
 }
 #else

fs/f2fs/debug.c

···
 	si->ndirty_files = sbi->ndirty_inode[FILE_INODE];
 	si->nquota_files = sbi->nquota_files;
 	si->ndirty_all = sbi->ndirty_inode[DIRTY_META];
-	si->aw_cnt = sbi->atomic_files;
+	si->aw_cnt = atomic_read(&sbi->atomic_files);
 	si->max_aw_cnt = atomic_read(&sbi->max_aw_cnt);
 	si->nr_dio_read = get_pages(sbi, F2FS_DIO_READ);
 	si->nr_dio_write = get_pages(sbi, F2FS_DIO_WRITE);
···
 	si->inline_inode = atomic_read(&sbi->inline_inode);
 	si->inline_dir = atomic_read(&sbi->inline_dir);
 	si->compr_inode = atomic_read(&sbi->compr_inode);
+	si->swapfile_inode = atomic_read(&sbi->swapfile_inode);
 	si->compr_blocks = atomic64_read(&sbi->compr_blocks);
 	si->append = sbi->im[APPEND_INO].ino_num;
 	si->update = sbi->im[UPDATE_INO].ino_num;
···
 
 		seq_printf(s, "\n=====[ partition info(%pg). #%d, %s, CP: %s]=====\n",
 			si->sbi->sb->s_bdev, i++,
-			f2fs_readonly(si->sbi->sb) ? "RO": "RW",
+			f2fs_readonly(si->sbi->sb) ? "RO" : "RW",
 			is_set_ckpt_flags(si->sbi, CP_DISABLED_FLAG) ?
 			"Disabled" : (f2fs_cp_error(si->sbi) ? "Error" : "Good"));
 		if (si->sbi->s_flag) {
···
 			   si->inline_dir);
 		seq_printf(s, "  - Compressed Inode: %u, Blocks: %llu\n",
 			   si->compr_inode, si->compr_blocks);
+		seq_printf(s, "  - Swapfile Inode: %u\n",
+			   si->swapfile_inode);
 		seq_printf(s, "  - Orphan/Append/Update Inode: %u, %u, %u\n",
 			   si->orphans, si->append, si->update);
 		seq_printf(s, "\nMain area: %d segs, %d secs %d zones\n",
···
 	atomic_set(&sbi->inline_dir, 0);
 	atomic_set(&sbi->compr_inode, 0);
 	atomic64_set(&sbi->compr_blocks, 0);
+	atomic_set(&sbi->swapfile_inode, 0);
+	atomic_set(&sbi->atomic_files, 0);
 	atomic_set(&sbi->inplace_count, 0);
 	for (i = META_CP; i < META_MAX; i++)
 		atomic_set(&sbi->meta_count[i], 0);

fs/f2fs/dir.c

···
 				  __func__, le16_to_cpu(de->name_len));
 			set_sbi_flag(sbi, SBI_NEED_FSCK);
 			err = -EFSCORRUPTED;
+			f2fs_handle_error(sbi, ERROR_CORRUPTED_DIRENT);
 			goto out;
 		}
 

fs/f2fs/extent_cache.c

···
 	if (!et)
 		return;
 
-	trace_f2fs_update_extent_tree_range(inode, fofs, blkaddr, len);
+	trace_f2fs_update_extent_tree_range(inode, fofs, blkaddr, len, 0);
 
 	write_lock(&et->lock);
 
···
 		org_end = dei.fofs + dei.len;
 		f2fs_bug_on(sbi, pos >= org_end);
 
-		if (pos > dei.fofs &&	pos - dei.fofs >= F2FS_MIN_EXTENT_LEN) {
+		if (pos > dei.fofs && pos - dei.fofs >= F2FS_MIN_EXTENT_LEN) {
 			en->ei.len = pos - en->ei.fofs;
 			prev_en = en;
 			parts = 1;
···
 	struct rb_node **insert_p = NULL, *insert_parent = NULL;
 	bool leftmost = false;
 
-	trace_f2fs_update_extent_tree_range(inode, fofs, blkaddr, llen);
+	trace_f2fs_update_extent_tree_range(inode, fofs, blkaddr, llen, c_len);
 
 	/* it is safe here to check FI_NO_EXTENT w/o et->lock in ro image */
 	if (is_inode_flag_set(inode, FI_NO_EXTENT))
···
 	if (!f2fs_may_extent_tree(inode))
 		return;
 
-	set_inode_flag(inode, FI_NO_EXTENT);
-
 	write_lock(&et->lock);
+	set_inode_flag(inode, FI_NO_EXTENT);
 	__free_extent_tree(sbi, et);
 	if (et->largest.len) {
 		et->largest.len = 0;

fs/f2fs/f2fs.h

···
 					 * condition of read on truncated area
 					 * by extent_cache
 					 */
+	DATA_GENERIC_ENHANCE_UPDATE,	/*
+					 * strong check on range and segment
+					 * bitmap for update case
+					 */
 	META_GENERIC,
 };
 
···
 	ORPHAN_INO,		/* for orphan ino list */
 	APPEND_INO,		/* for append ino list */
 	UPDATE_INO,		/* for update ino list */
-	TRANS_DIR_INO,		/* for trasactions dir ino list */
+	TRANS_DIR_INO,		/* for transactions dir ino list */
 	FLUSH_INO,		/* for multiple device flushing */
 	MAX_INO_ENTRY,		/* max. list */
 };
···
 	unsigned int clevel;		/* maximum level of given file name */
 	struct task_struct *task;	/* lookup and create consistency */
 	struct task_struct *cp_task;	/* separate cp/wb IO stats*/
+	struct task_struct *wb_task;	/* indicate inode is in context of writeback */
 	nid_t i_xattr_nid;		/* node id that contains xattrs */
 	loff_t	last_disk_size;		/* lastly written file size */
 	spinlock_t i_size_lock;		/* protect last_disk_size */
···
 	APP_BUFFERED_IO,		/* app buffered write IOs */
 	APP_WRITE_IO,			/* app write IOs */
 	APP_MAPPED_IO,			/* app mapped IOs */
+	APP_BUFFERED_CDATA_IO,		/* app buffered write IOs on compressed file */
+	APP_MAPPED_CDATA_IO,		/* app mapped write IOs on compressed file */
 	FS_DATA_IO,			/* data IOs from kworker/fsync/reclaimer */
+	FS_CDATA_IO,			/* data IOs from kworker/fsync/reclaimer on compressed file */
 	FS_NODE_IO,			/* node IOs from kworker/fsync/reclaimer */
 	FS_META_IO,			/* meta IOs from kworker/reclaimer */
 	FS_GC_DATA_IO,			/* data IOs from forground gc */
···
 	APP_BUFFERED_READ_IO,		/* app buffered read IOs */
 	APP_READ_IO,			/* app read IOs */
 	APP_MAPPED_READ_IO,		/* app mapped read IOs */
+	APP_BUFFERED_CDATA_READ_IO,	/* app buffered read IOs on compressed file  */
+	APP_MAPPED_CDATA_READ_IO,	/* app mapped read IOs on compressed file  */
 	FS_DATA_READ_IO,		/* data read IOs */
 	FS_GDATA_READ_IO,		/* data read IOs from background gc */
 	FS_CDATA_READ_IO,		/* compressed data read IOs */
···
 	DIR_INODE,			/* for dirty dir inode */
 	FILE_INODE,			/* for dirty regular/symlink inode */
 	DIRTY_META,			/* for all dirtied inode metadata */
-	ATOMIC_FILE,			/* for all atomic files */
 	NR_INODE_TYPE,
 };
 
···
 	unsigned int gc_mode;			/* current GC state */
 	unsigned int next_victim_seg[2];	/* next segment in victim section */
 	spinlock_t gc_urgent_high_lock;
-	bool gc_urgent_high_limited;		/* indicates having limited trial count */
 	unsigned int gc_urgent_high_remaining;	/* remaining trial count for GC_URGENT_HIGH */
 
 	/* for skip statistic */
-	unsigned int atomic_files;		/* # of opened atomic file */
 	unsigned long long skipped_gc_rwsem;		/* FG_GC only */
 
 	/* threshold for gc trials on pinned files */
···
 	atomic_t inline_dir;			/* # of inline_dentry inodes */
 	atomic_t compr_inode;			/* # of compressed inodes */
 	atomic64_t compr_blocks;		/* # of compressed blocks */
+	atomic_t swapfile_inode;		/* # of swapfile inodes */
+	atomic_t atomic_files;			/* # of opened atomic file */
 	atomic_t max_aw_cnt;			/* max # of atomic writes */
 	unsigned int io_skip_bggc;		/* skip background gc for in-flight IO */
 	unsigned int other_skip_bggc;		/* skip background gc for other reasons */
···
 	__u32 s_chksum_seed;
 
 	struct workqueue_struct *post_read_wq;	/* post read workqueue */
+
+	unsigned char errors[MAX_F2FS_ERRORS];	/* error flags */
+	spinlock_t error_lock;			/* protect errors array */
+	bool error_dirty;			/* errors of sb is dirty */
 
 	struct kmem_cache *inline_xattr_slab;	/* inline xattr entry */
 	unsigned int inline_xattr_slab_size;	/* default inline xattr slab size */
···
 
 	if (__cp_payload(sbi) > 0) {
 		if (flag == NAT_BITMAP)
-			return &ckpt->sit_nat_version_bitmap;
+			return tmp_ptr;
 		else
 			return (unsigned char *)ckpt + F2FS_BLKSIZE;
 	} else {
···
 int f2fs_quota_sync(struct super_block *sb, int type);
 loff_t max_file_blocks(struct inode *inode);
 void f2fs_quota_off_umount(struct super_block *sb);
+void f2fs_handle_stop(struct f2fs_sb_info *sbi, unsigned char reason);
+void f2fs_handle_error(struct f2fs_sb_info *sbi, unsigned char error);
 int f2fs_commit_super(struct f2fs_sb_info *sbi, bool recover);
 int f2fs_sync_fs(struct super_block *sb, int sync);
 int f2fs_sanity_check_ckpt(struct f2fs_sb_info *sbi);
···
 /*
  * checkpoint.c
  */
-void f2fs_stop_checkpoint(struct f2fs_sb_info *sbi, bool end_io);
+void f2fs_stop_checkpoint(struct f2fs_sb_info *sbi, bool end_io,
+							unsigned char reason);
+void f2fs_flush_ckpt_thread(struct f2fs_sb_info *sbi);
 struct page *f2fs_grab_meta_page(struct f2fs_sb_info *sbi, pgoff_t index);
 struct page *f2fs_get_meta_page(struct f2fs_sb_info *sbi, pgoff_t index);
 struct page *f2fs_get_meta_page_retry(struct f2fs_sb_info *sbi, pgoff_t index);
···
 int f2fs_get_valid_checkpoint(struct f2fs_sb_info *sbi);
 void f2fs_update_dirty_folio(struct inode *inode, struct folio *folio);
 void f2fs_remove_dirty_inode(struct inode *inode);
-int f2fs_sync_dirty_inodes(struct f2fs_sb_info *sbi, enum inode_type type);
+int f2fs_sync_dirty_inodes(struct f2fs_sb_info *sbi, enum inode_type type,
+								bool from_cp);
 void f2fs_wait_on_all_pages(struct f2fs_sb_info *sbi, int type);
 u64 f2fs_get_sectors_written(struct f2fs_sb_info *sbi);
 int f2fs_write_checkpoint(struct f2fs_sb_info *sbi, struct cp_control *cpc);
···
 	int nr_issued_ckpt, nr_total_ckpt, nr_queued_ckpt;
 	unsigned int cur_ckpt_time, peak_ckpt_time;
 	int inline_xattr, inline_inode, inline_dir, append, update, orphans;
-	int compr_inode;
+	int compr_inode, swapfile_inode;
 	unsigned long long compr_blocks;
 	int aw_cnt, max_aw_cnt;
 	unsigned int valid_count, valid_node_count, valid_inode_count, discard_blks;
···
 		(atomic64_add(blocks, &F2FS_I_SB(inode)->compr_blocks))
 #define stat_sub_compr_blocks(inode, blocks)				\
 		(atomic64_sub(blocks, &F2FS_I_SB(inode)->compr_blocks))
+#define stat_inc_swapfile_inode(inode)					\
+		(atomic_inc(&F2FS_I_SB(inode)->swapfile_inode))
+#define stat_dec_swapfile_inode(inode)					\
+		(atomic_dec(&F2FS_I_SB(inode)->swapfile_inode))
+#define stat_inc_atomic_inode(inode)					\
+			(atomic_inc(&F2FS_I_SB(inode)->atomic_files))
+#define stat_dec_atomic_inode(inode)					\
+			(atomic_dec(&F2FS_I_SB(inode)->atomic_files))
 #define stat_inc_meta_count(sbi, blkaddr)				\
 	do {								\
 		if (blkaddr < SIT_I(sbi)->sit_base_addr)		\
···
 		(atomic_inc(&(sbi)->inplace_count))
 #define stat_update_max_atomic_write(inode)				\
 	do {								\
-		int cur = F2FS_I_SB(inode)->atomic_files;	\
+		int cur = atomic_read(&F2FS_I_SB(inode)->atomic_files);	\
 		int max = atomic_read(&F2FS_I_SB(inode)->max_aw_cnt);	\
 		if (cur > max)						\
 			atomic_set(&F2FS_I_SB(inode)->max_aw_cnt, cur);	\
···
 #define stat_dec_compr_inode(inode)			do { } while (0)
 #define stat_add_compr_blocks(inode, blocks)		do { } while (0)
 #define stat_sub_compr_blocks(inode, blocks)		do { } while (0)
+#define stat_inc_swapfile_inode(inode)			do { } while (0)
+#define stat_dec_swapfile_inode(inode)			do { } while (0)
+#define stat_inc_atomic_inode(inode)			do { } while (0)
+#define stat_dec_atomic_inode(inode)			do { } while (0)
 #define stat_update_max_atomic_write(inode)		do { } while (0)
 #define stat_inc_meta_count(sbi, blkaddr)		do { } while (0)
 #define stat_inc_seg_type(sbi, curseg)			do { } while (0)

fs/f2fs/file.c

···
 
 	ret = filemap_fault(vmf);
 	if (!ret)
-		f2fs_update_iostat(F2FS_I_SB(inode), APP_MAPPED_READ_IO,
-							F2FS_BLKSIZE);
+		f2fs_update_iostat(F2FS_I_SB(inode), inode,
+					APP_MAPPED_READ_IO, F2FS_BLKSIZE);
 
 	trace_f2fs_filemap_fault(inode, vmf->pgoff, (unsigned long)ret);
 
···
 	if (!PageUptodate(page))
 		SetPageUptodate(page);
 
-	f2fs_update_iostat(sbi, APP_MAPPED_IO, F2FS_BLKSIZE);
+	f2fs_update_iostat(sbi, inode, APP_MAPPED_IO, F2FS_BLKSIZE);
 	f2fs_update_time(sbi, REQ_TIME);
 
 	trace_f2fs_vm_page_mkwrite(page, DATA);
···
 	/* disallow direct IO if any of devices has unaligned blksize */
 	if (f2fs_is_multi_device(sbi) && !sbi->aligned_blksize)
 		return true;
-
+	/*
+	 * for blkzoned device, fallback direct IO to buffered IO, so
+	 * all IOs can be serialized by log-structured write.
+	 */
+	if (f2fs_sb_has_blkzoned(sbi) && (rw == WRITE))
+		return true;
 	if (f2fs_lfs_mode(sbi) && rw == WRITE && F2FS_IO_ALIGNED(sbi))
 		return true;
 	if (is_sbi_flag_set(sbi, SBI_CP_DISABLED))
···
 		inode->i_ctime = attr->ia_ctime;
 	if (ia_valid & ATTR_MODE) {
 		umode_t mode = attr->ia_mode;
-		kgid_t kgid = i_gid_into_mnt(mnt_userns, inode);
+		vfsgid_t vfsgid = i_gid_into_vfsgid(mnt_userns, inode);
 
-		if (!in_group_p(kgid) && !capable_wrt_inode_uidgid(mnt_userns, inode, CAP_FSETID))
+		if (!vfsgid_in_group_p(vfsgid) &&
+		    !capable_wrt_inode_uidgid(mnt_userns, inode, CAP_FSETID))
 			mode &= ~S_ISGID;
 		set_acl_inode(inode, mode);
 	}
···
 			!f2fs_is_valid_blkaddr(sbi, *blkaddr,
 					DATA_GENERIC_ENHANCE)) {
 			f2fs_put_dnode(&dn);
+			f2fs_handle_error(sbi, ERROR_INVALID_BLKADDR);
 			return -EFSCORRUPTED;
 		}
 
···
 		if (!f2fs_is_valid_blkaddr(sbi, dn->data_blkaddr,
 					DATA_GENERIC_ENHANCE)) {
 			ret = -EFSCORRUPTED;
+			f2fs_handle_error(sbi, ERROR_INVALID_BLKADDR);
 			break;
 		}
 
···
 	}
 	f2fs_i_size_write(fi->cow_inode, i_size_read(inode));
 
-	spin_lock(&sbi->inode_lock[ATOMIC_FILE]);
-	sbi->atomic_files++;
-	spin_unlock(&sbi->inode_lock[ATOMIC_FILE]);
+	stat_inc_atomic_inode(inode);
 
 	set_inode_flag(inode, FI_ATOMIC_FILE);
 	set_inode_flag(fi->cow_inode, FI_COW_FILE);
···
 		if (ret) {
 			if (ret == -EROFS) {
 				ret = 0;
-				f2fs_stop_checkpoint(sbi, false);
+				f2fs_stop_checkpoint(sbi, false,
+						STOP_CP_REASON_SHUTDOWN);
 				set_sbi_flag(sbi, SBI_IS_SHUTDOWN);
 				trace_f2fs_shutdown(sbi, in, ret);
 			}
···
 		ret = freeze_bdev(sb->s_bdev);
 		if (ret)
 			goto out;
-		f2fs_stop_checkpoint(sbi, false);
+		f2fs_stop_checkpoint(sbi, false, STOP_CP_REASON_SHUTDOWN);
 		set_sbi_flag(sbi, SBI_IS_SHUTDOWN);
 		thaw_bdev(sb->s_bdev);
 		break;
···
 		ret = f2fs_sync_fs(sb, 1);
 		if (ret)
 			goto out;
-		f2fs_stop_checkpoint(sbi, false);
+		f2fs_stop_checkpoint(sbi, false, STOP_CP_REASON_SHUTDOWN);
 		set_sbi_flag(sbi, SBI_IS_SHUTDOWN);
 		break;
 	case F2FS_GOING_DOWN_NOSYNC:
-		f2fs_stop_checkpoint(sbi, false);
+		f2fs_stop_checkpoint(sbi, false, STOP_CP_REASON_SHUTDOWN);
 		set_sbi_flag(sbi, SBI_IS_SHUTDOWN);
 		break;
 	case F2FS_GOING_DOWN_METAFLUSH:
 		f2fs_sync_meta_pages(sbi, META, LONG_MAX, FS_META_IO);
-		f2fs_stop_checkpoint(sbi, false);
+		f2fs_stop_checkpoint(sbi, false, STOP_CP_REASON_SHUTDOWN);
 		set_sbi_flag(sbi, SBI_IS_SHUTDOWN);
 		break;
 	case F2FS_GOING_DOWN_NEED_FSCK:
···
 		if (!__is_valid_data_blkaddr(blkaddr))
 			continue;
 		if (unlikely(!f2fs_is_valid_blkaddr(sbi, blkaddr,
-					DATA_GENERIC_ENHANCE)))
+					DATA_GENERIC_ENHANCE))) {
+			f2fs_handle_error(sbi, ERROR_INVALID_BLKADDR);
 			return -EFSCORRUPTED;
+		}
 	}
 
 	while (count) {
···
 		if (!__is_valid_data_blkaddr(blkaddr))
 			continue;
 		if (unlikely(!f2fs_is_valid_blkaddr(sbi, blkaddr,
-					DATA_GENERIC_ENHANCE)))
+					DATA_GENERIC_ENHANCE))) {
+			f2fs_handle_error(sbi, ERROR_INVALID_BLKADDR);
 			return -EFSCORRUPTED;
+		}
 	}
 
 	while (count) {
···
 						DATA_GENERIC_ENHANCE)) {
 				ret = -EFSCORRUPTED;
 				f2fs_put_dnode(&dn);
+				f2fs_handle_error(sbi,
+						ERROR_INVALID_BLKADDR);
 				goto out;
 			}
 
···
 	dec_page_count(sbi, F2FS_DIO_READ);
 	if (error)
 		return error;
-	f2fs_update_iostat(sbi, APP_DIRECT_READ_IO, size);
+	f2fs_update_iostat(sbi, NULL, APP_DIRECT_READ_IO, size);
 	return 0;
 }
 
···
 	} else {
 		ret = filemap_read(iocb, to, 0);
 		if (ret > 0)
-			f2fs_update_iostat(F2FS_I_SB(inode), APP_BUFFERED_READ_IO, ret);
+			f2fs_update_iostat(F2FS_I_SB(inode), inode,
+						APP_BUFFERED_READ_IO, ret);
 	}
 	if (trace_f2fs_dataread_end_enabled())
 		trace_f2fs_dataread_end(inode, pos, ret);
···
 
 	if (ret > 0) {
 		iocb->ki_pos += ret;
-		f2fs_update_iostat(F2FS_I_SB(inode), APP_BUFFERED_IO, ret);
+		f2fs_update_iostat(F2FS_I_SB(inode), inode,
+						APP_BUFFERED_IO, ret);
 	}
 	return ret;
 }
···
 	dec_page_count(sbi, F2FS_DIO_WRITE);
 	if (error)
 		return error;
-	f2fs_update_iostat(sbi, APP_DIRECT_IO, size);
+	f2fs_update_iostat(sbi, NULL, APP_DIRECT_IO, size);
 	return 0;
 }
 
···
 skip_write_trace:
 		/* Do the actual write. */
 		ret = dio ?
-			f2fs_dio_write_iter(iocb, from, &may_need_sync):
+			f2fs_dio_write_iter(iocb, from, &may_need_sync) :
 			f2fs_buffered_write_iter(iocb, from);
 
 		if (trace_f2fs_datawrite_end_enabled())

fs/f2fs/gc.c

···
 
 		if (time_to_inject(sbi, FAULT_CHECKPOINT)) {
 			f2fs_show_injection_info(sbi, FAULT_CHECKPOINT);
-			f2fs_stop_checkpoint(sbi, false);
+			f2fs_stop_checkpoint(sbi, false,
+					STOP_CP_REASON_FAULT_INJECT);
 		}
 
 		if (!sb_start_write_trylock(sbi->sb)) {
···
 		 */
 		if (sbi->gc_mode == GC_URGENT_HIGH) {
 			spin_lock(&sbi->gc_urgent_high_lock);
-			if (sbi->gc_urgent_high_limited) {
-				if (!sbi->gc_urgent_high_remaining) {
-					sbi->gc_urgent_high_limited = false;
-					spin_unlock(&sbi->gc_urgent_high_lock);
-					sbi->gc_mode = GC_NORMAL;
-					continue;
-				}
+			if (sbi->gc_urgent_high_remaining) {
 				sbi->gc_urgent_high_remaining--;
+				if (!sbi->gc_urgent_high_remaining)
+					sbi->gc_mode = GC_NORMAL;
 			}
 			spin_unlock(&sbi->gc_urgent_high_lock);
 		}
···
 {
 	struct page *node_page;
 	nid_t nid;
-	unsigned int ofs_in_node;
+	unsigned int ofs_in_node, max_addrs;
 	block_t source_blkaddr;
 
 	nid = le32_to_cpu(sum->nid);
···
 
 	if (f2fs_check_nid_range(sbi, dni->ino)) {
 		f2fs_put_page(node_page, 1);
+		return false;
+	}
+
+	max_addrs = IS_INODE(node_page) ? DEF_ADDRS_PER_INODE :
+						DEF_ADDRS_PER_BLOCK;
+	if (ofs_in_node >= max_addrs) {
+		f2fs_err(sbi, "Inconsistent ofs_in_node:%u in summary, ino:%u, nid:%u, max:%u",
+			ofs_in_node, dni->ino, dni->nid, max_addrs);
 		return false;
 	}
 
···
 		if (unlikely(!f2fs_is_valid_blkaddr(sbi, dn.data_blkaddr,
 						DATA_GENERIC_ENHANCE_READ))) {
 			err = -EFSCORRUPTED;
+			f2fs_handle_error(sbi, ERROR_INVALID_BLKADDR);
 			goto put_page;
 		}
 		goto got_it;
···
 	if (unlikely(!f2fs_is_valid_blkaddr(sbi, dn.data_blkaddr,
 						DATA_GENERIC_ENHANCE))) {
 		err = -EFSCORRUPTED;
+		f2fs_handle_error(sbi, ERROR_INVALID_BLKADDR);
 		goto put_page;
 	}
 got_it:
···
 	f2fs_put_page(fio.encrypted_page, 0);
 	f2fs_put_page(page, 1);
 
-	f2fs_update_iostat(sbi, FS_DATA_READ_IO, F2FS_BLKSIZE);
-	f2fs_update_iostat(sbi, FS_GDATA_READ_IO, F2FS_BLKSIZE);
+	f2fs_update_iostat(sbi, inode, FS_DATA_READ_IO, F2FS_BLKSIZE);
+	f2fs_update_iostat(sbi, NULL, FS_GDATA_READ_IO, F2FS_BLKSIZE);
 
 	return 0;
 put_encrypted_page:
···
 			goto up_out;
 		}
 
-		f2fs_update_iostat(fio.sbi, FS_DATA_READ_IO, F2FS_BLKSIZE);
-		f2fs_update_iostat(fio.sbi, FS_GDATA_READ_IO, F2FS_BLKSIZE);
+		f2fs_update_iostat(fio.sbi, inode, FS_DATA_READ_IO,
+							F2FS_BLKSIZE);
+		f2fs_update_iostat(fio.sbi, NULL, FS_GDATA_READ_IO,
+							F2FS_BLKSIZE);
 
 		lock_page(mpage);
 		if (unlikely(mpage->mapping != META_MAPPING(fio.sbi) ||
···
 		goto put_page_out;
 	}
 
-	f2fs_update_iostat(fio.sbi, FS_GC_DATA_IO, F2FS_BLKSIZE);
+	f2fs_update_iostat(fio.sbi, NULL, FS_GC_DATA_IO, F2FS_BLKSIZE);
 
 	f2fs_update_data_blkaddr(&dn, newaddr);
 	set_inode_flag(inode, FI_APPEND_WRITE);
···
 			f2fs_err(sbi, "Inconsistent segment (%u) type [%d, %d] in SSA and SIT",
 				 segno, type, GET_SUM_TYPE((&sum->footer)));
 			set_sbi_flag(sbi, SBI_NEED_FSCK);
-			f2fs_stop_checkpoint(sbi, false);
+			f2fs_stop_checkpoint(sbi, false,
+				STOP_CP_REASON_CORRUPTED_SUMMARY);
 			goto skip;
 		}
 

fs/f2fs/inline.c

···
 void f2fs_do_read_inline_data(struct page *page, struct page *ipage)
 {
 	struct inode *inode = page->mapping->host;
-	void *src_addr, *dst_addr;
 
 	if (PageUptodate(page))
 		return;
···
 	zero_user_segment(page, MAX_INLINE_DATA(inode), PAGE_SIZE);
 
 	/* Copy the whole inline data block */
-	src_addr = inline_data_addr(inode, ipage);
-	dst_addr = kmap_atomic(page);
-	memcpy(dst_addr, src_addr, MAX_INLINE_DATA(inode));
-	flush_dcache_page(page);
-	kunmap_atomic(dst_addr);
+	memcpy_to_page(page, 0, inline_data_addr(inode, ipage),
+		       MAX_INLINE_DATA(inode));
 	if (!PageUptodate(page))
 		SetPageUptodate(page);
 }
···
 		set_sbi_flag(fio.sbi, SBI_NEED_FSCK);
 		f2fs_warn(fio.sbi, "%s: corrupted inline inode ino=%lx, i_addr[0]:0x%x, run fsck to fix.",
 			  __func__, dn->inode->i_ino, dn->data_blkaddr);
+		f2fs_handle_error(fio.sbi, ERROR_INVALID_BLKADDR);
 		return -EFSCORRUPTED;
 	}
 
···
 
 int f2fs_write_inline_data(struct inode *inode, struct page *page)
 {
-	void *src_addr, *dst_addr;
 	struct dnode_of_data dn;
 	int err;
 
···
 	f2fs_bug_on(F2FS_I_SB(inode), page->index);
 
 	f2fs_wait_on_page_writeback(dn.inode_page, NODE, true, true);
-	src_addr = kmap_atomic(page);
-	dst_addr = inline_data_addr(inode, dn.inode_page);
-	memcpy(dst_addr, src_addr, MAX_INLINE_DATA(inode));
-	kunmap_atomic(src_addr);
+	memcpy_from_page(inline_data_addr(inode, dn.inode_page),
+			 page, 0, MAX_INLINE_DATA(inode));
 	set_page_dirty(dn.inode_page);
 
 	f2fs_clear_page_cache_dirty_tag(page);
···
 		set_sbi_flag(F2FS_P_SB(page), SBI_NEED_FSCK);
 		f2fs_warn(F2FS_P_SB(page), "%s: corrupted inline inode ino=%lx, i_addr[0]:0x%x, run fsck to fix.",
 			  __func__, dir->i_ino, dn.data_blkaddr);
+		f2fs_handle_error(F2FS_P_SB(page), ERROR_INVALID_BLKADDR);
 		err = -EFSCORRUPTED;
 		goto out;
 	}

fs/f2fs/inode.c

···
 
 	if (!__is_valid_data_blkaddr(addr))
 		return 1;
-	if (!f2fs_is_valid_blkaddr(sbi, addr, DATA_GENERIC_ENHANCE))
+	if (!f2fs_is_valid_blkaddr(sbi, addr, DATA_GENERIC_ENHANCE)) {
+		f2fs_handle_error(sbi, ERROR_INVALID_BLKADDR);
 		return -EFSCORRUPTED;
+	}
 	return 0;
 }
 
···
 	return true;
 }
 
+static void init_idisk_time(struct inode *inode)
+{
+	struct f2fs_inode_info *fi = F2FS_I(inode);
+
+	fi->i_disk_time[0] = inode->i_atime;
+	fi->i_disk_time[1] = inode->i_ctime;
+	fi->i_disk_time[2] = inode->i_mtime;
+	fi->i_disk_time[3] = fi->i_crtime;
+}
+
 static int do_read_inode(struct inode *inode)
 {
 	struct f2fs_sb_info *sbi = F2FS_I_SB(inode);
···
 
 	if (!sanity_check_inode(inode, node_page)) {
 		f2fs_put_page(node_page, 1);
+		f2fs_handle_error(sbi, ERROR_CORRUPTED_INODE);
 		return -EFSCORRUPTED;
 	}
 
···
 		}
 	}
 
-	fi->i_disk_time[0] = inode->i_atime;
-	fi->i_disk_time[1] = inode->i_ctime;
-	fi->i_disk_time[2] = inode->i_mtime;
-	fi->i_disk_time[3] = fi->i_crtime;
+	init_idisk_time(inode);
 	f2fs_put_page(node_page, 1);
 
 	stat_inc_inline_xattr(inode);
···
 	stat_add_compr_blocks(inode, atomic_read(&fi->i_compr_blocks));
 
 	return 0;
+}
+
+static bool is_meta_ino(struct f2fs_sb_info *sbi, unsigned int ino)
+{
+	return ino == F2FS_NODE_INO(sbi) || ino == F2FS_META_INO(sbi) ||
+		ino == F2FS_COMPRESS_INO(sbi);
 }
 
 struct inode *f2fs_iget(struct super_block *sb, unsigned long ino)
···
 		return ERR_PTR(-ENOMEM);
 
 	if (!(inode->i_state & I_NEW)) {
+		if (is_meta_ino(sbi, ino)) {
+			f2fs_err(sbi, "inaccessible inode: %lu, run fsck to repair", ino);
+			set_sbi_flag(sbi, SBI_NEED_FSCK);
+			ret = -EFSCORRUPTED;
+			trace_f2fs_iget_exit(inode, ret);
+			iput(inode);
+			f2fs_handle_error(sbi, ERROR_CORRUPTED_INODE);
+			return ERR_PTR(ret);
+		}
+
 		trace_f2fs_iget(inode);
 		return inode;
 	}
-	if (ino == F2FS_NODE_INO(sbi) || ino == F2FS_META_INO(sbi))
-		goto make_now;
 
-#ifdef CONFIG_F2FS_FS_COMPRESSION
-	if (ino == F2FS_COMPRESS_INO(sbi))
+	if (is_meta_ino(sbi, ino))
 		goto make_now;
-#endif
 
 	ret = do_read_inode(inode);
 	if (ret)
···
 	if (inode->i_nlink == 0)
 		clear_page_private_inline(node_page);
 
-	F2FS_I(inode)->i_disk_time[0] = inode->i_atime;
-	F2FS_I(inode)->i_disk_time[1] = inode->i_ctime;
-	F2FS_I(inode)->i_disk_time[2] = inode->i_mtime;
-	F2FS_I(inode)->i_disk_time[3] = F2FS_I(inode)->i_crtime;
-
+	init_idisk_time(inode);
 #ifdef CONFIG_F2FS_CHECK_FS
 	f2fs_inode_chksum_set(F2FS_I_SB(inode), node_page);
 #endif
···
 			cond_resched();
 			goto retry;
 		} else if (err != -ENOENT) {
-			f2fs_stop_checkpoint(sbi, false);
+			f2fs_stop_checkpoint(sbi, false,
+					STOP_CP_REASON_UPDATE_INODE);
 		}
 		return;
 	}

fs/f2fs/iostat.c

···
 
 	/* print app write IOs */
 	seq_puts(seq, "[WRITE]\n");
-	seq_printf(seq, "app buffered:	%-16llu\n",
+	seq_printf(seq, "app buffered data:	%-16llu\n",
 				sbi->rw_iostat[APP_BUFFERED_IO]);
-	seq_printf(seq, "app direct:	%-16llu\n",
+	seq_printf(seq, "app direct data:	%-16llu\n",
 				sbi->rw_iostat[APP_DIRECT_IO]);
-	seq_printf(seq, "app mapped:	%-16llu\n",
+	seq_printf(seq, "app mapped data:	%-16llu\n",
 				sbi->rw_iostat[APP_MAPPED_IO]);
+	seq_printf(seq, "app buffered cdata:	%-16llu\n",
+				sbi->rw_iostat[APP_BUFFERED_CDATA_IO]);
+	seq_printf(seq, "app mapped cdata:	%-16llu\n",
+				sbi->rw_iostat[APP_MAPPED_CDATA_IO]);
 
 	/* print fs write IOs */
-	seq_printf(seq, "fs data:	%-16llu\n",
+	seq_printf(seq, "fs data:		%-16llu\n",
 				sbi->rw_iostat[FS_DATA_IO]);
-	seq_printf(seq, "fs node:	%-16llu\n",
+	seq_printf(seq, "fs cdata:		%-16llu\n",
+				sbi->rw_iostat[FS_CDATA_IO]);
+	seq_printf(seq, "fs node:		%-16llu\n",
 				sbi->rw_iostat[FS_NODE_IO]);
-	seq_printf(seq, "fs meta:	%-16llu\n",
+	seq_printf(seq, "fs meta:		%-16llu\n",
 				sbi->rw_iostat[FS_META_IO]);
-	seq_printf(seq, "fs gc data:	%-16llu\n",
+	seq_printf(seq, "fs gc data:		%-16llu\n",
 				sbi->rw_iostat[FS_GC_DATA_IO]);
-	seq_printf(seq, "fs gc node:	%-16llu\n",
+	seq_printf(seq, "fs gc node:		%-16llu\n",
 				sbi->rw_iostat[FS_GC_NODE_IO]);
-	seq_printf(seq, "fs cp data:	%-16llu\n",
+	seq_printf(seq, "fs cp data:		%-16llu\n",
 				sbi->rw_iostat[FS_CP_DATA_IO]);
-	seq_printf(seq, "fs cp node:	%-16llu\n",
+	seq_printf(seq, "fs cp node:		%-16llu\n",
 				sbi->rw_iostat[FS_CP_NODE_IO]);
-	seq_printf(seq, "fs cp meta:	%-16llu\n",
+	seq_printf(seq, "fs cp meta:		%-16llu\n",
 				sbi->rw_iostat[FS_CP_META_IO]);
 
 	/* print app read IOs */
 	seq_puts(seq, "[READ]\n");
-	seq_printf(seq, "app buffered:	%-16llu\n",
+	seq_printf(seq, "app buffered data:	%-16llu\n",
 				sbi->rw_iostat[APP_BUFFERED_READ_IO]);
-	seq_printf(seq, "app direct:	%-16llu\n",
+	seq_printf(seq, "app direct data:	%-16llu\n",
 				sbi->rw_iostat[APP_DIRECT_READ_IO]);
-	seq_printf(seq, "app mapped:	%-16llu\n",
+	seq_printf(seq, "app mapped data:	%-16llu\n",
 				sbi->rw_iostat[APP_MAPPED_READ_IO]);
+	seq_printf(seq, "app buffered cdata:	%-16llu\n",
+				sbi->rw_iostat[APP_BUFFERED_CDATA_READ_IO]);
+	seq_printf(seq, "app mapped cdata:	%-16llu\n",
+				sbi->rw_iostat[APP_MAPPED_CDATA_READ_IO]);
 
 	/* print fs read IOs */
-	seq_printf(seq, "fs data:	%-16llu\n",
+	seq_printf(seq, "fs data:		%-16llu\n",
 				sbi->rw_iostat[FS_DATA_READ_IO]);
-	seq_printf(seq, "fs gc data:	%-16llu\n",
+	seq_printf(seq, "fs gc data:		%-16llu\n",
 				sbi->rw_iostat[FS_GDATA_READ_IO]);
-	seq_printf(seq, "fs compr_data:	%-16llu\n",
+	seq_printf(seq, "fs cdata:		%-16llu\n",
 				sbi->rw_iostat[FS_CDATA_READ_IO]);
-	seq_printf(seq, "fs node:	%-16llu\n",
+	seq_printf(seq, "fs node:		%-16llu\n",
 				sbi->rw_iostat[FS_NODE_READ_IO]);
-	seq_printf(seq, "fs meta:	%-16llu\n",
+	seq_printf(seq, "fs meta:		%-16llu\n",
 				sbi->rw_iostat[FS_META_READ_IO]);
 
 	/* print other IOs */
 	seq_puts(seq, "[OTHER]\n");
-	seq_printf(seq, "fs discard:	%-16llu\n",
+	seq_printf(seq, "fs discard:		%-16llu\n",
 				sbi->rw_iostat[FS_DISCARD]);
 
 	return 0;
···
 	spin_unlock_irq(&sbi->iostat_lat_lock);
 }
 
-void f2fs_update_iostat(struct f2fs_sb_info *sbi,
+void f2fs_update_iostat(struct f2fs_sb_info *sbi, struct inode *inode,
 			enum iostat_type type, unsigned long long io_bytes)
 {
 	unsigned long flags;
···
 
 	if (type == APP_BUFFERED_READ_IO || type == APP_DIRECT_READ_IO)
 		sbi->rw_iostat[APP_READ_IO] += io_bytes;
+
+#ifdef CONFIG_F2FS_FS_COMPRESSION
+	if (inode && f2fs_compressed_file(inode)) {
+		if (type == APP_BUFFERED_IO)
+			sbi->rw_iostat[APP_BUFFERED_CDATA_IO] += io_bytes;
+
+		if (type == APP_BUFFERED_READ_IO)
+			sbi->rw_iostat[APP_BUFFERED_CDATA_READ_IO] += io_bytes;
+
+		if (type == APP_MAPPED_READ_IO)
+			sbi->rw_iostat[APP_MAPPED_CDATA_READ_IO] += io_bytes;
+
+		if (type == APP_MAPPED_IO)
+			sbi->rw_iostat[APP_MAPPED_CDATA_IO] += io_bytes;
+
+		if (type == FS_DATA_READ_IO)
+			sbi->rw_iostat[FS_CDATA_READ_IO] += io_bytes;
+
+		if (type == FS_DATA_IO)
+			sbi->rw_iostat[FS_CDATA_IO] += io_bytes;
+	}
+#endif
 
 	spin_unlock_irqrestore(&sbi->iostat_lock, flags);
 

fs/f2fs/iostat.h

···
 extern int __maybe_unused iostat_info_seq_show(struct seq_file *seq,
 			void *offset);
 extern void f2fs_reset_iostat(struct f2fs_sb_info *sbi);
-extern void f2fs_update_iostat(struct f2fs_sb_info *sbi,
+extern void f2fs_update_iostat(struct f2fs_sb_info *sbi, struct inode *inode,
 			enum iostat_type type, unsigned long long io_bytes);
 
 struct bio_iostat_ctx {
···
 extern int f2fs_init_iostat(struct f2fs_sb_info *sbi);
 extern void f2fs_destroy_iostat(struct f2fs_sb_info *sbi);
 #else
-static inline void f2fs_update_iostat(struct f2fs_sb_info *sbi,
+static inline void f2fs_update_iostat(struct f2fs_sb_info *sbi, struct inode *inode,
 		enum iostat_type type, unsigned long long io_bytes) {}
 static inline void iostat_update_and_unbind_ctx(struct bio *bio, int rw) {}
 static inline void iostat_alloc_and_bind_ctx(struct f2fs_sb_info *sbi,

fs/f2fs/node.c

···
 		set_sbi_flag(sbi, SBI_NEED_FSCK);
 		f2fs_warn(sbi, "%s: out-of-range nid=%x, run fsck to fix.",
 			  __func__, nid);
+		f2fs_handle_error(sbi, ERROR_CORRUPTED_INODE);
 		return -EFSCORRUPTED;
 	}
 	return 0;
···
 		ne = nat_in_journal(journal, i);
 		node_info_from_raw_nat(ni, &ne);
 	}
-        up_read(&curseg->journal_rwsem);
+	up_read(&curseg->journal_rwsem);
 	if (i >= 0) {
 		f2fs_up_read(&nm_i->nat_tree_lock);
 		goto cache;
···
 	if (unlikely(new_ni.blk_addr != NULL_ADDR)) {
 		err = -EFSCORRUPTED;
 		set_sbi_flag(sbi, SBI_NEED_FSCK);
+		f2fs_handle_error(sbi, ERROR_INVALID_BLKADDR);
 		goto fail;
 	}
 #endif
···
 	err = f2fs_submit_page_bio(&fio);
 
 	if (!err)
-		f2fs_update_iostat(sbi, FS_NODE_READ_IO, F2FS_BLKSIZE);
+		f2fs_update_iostat(sbi, NULL, FS_NODE_READ_IO, F2FS_BLKSIZE);
 
 	return err;
 }
···
 	if (IS_INODE(&folio->page))
 		f2fs_inode_chksum_set(F2FS_M_SB(mapping), &folio->page);
 #endif
-	if (!folio_test_dirty(folio)) {
-		filemap_dirty_folio(mapping, folio);
+	if (filemap_dirty_folio(mapping, folio)) {
 		inc_page_count(F2FS_M_SB(mapping), F2FS_DIRTY_NODES);
 		set_page_private_reference(&folio->page);
 		return true;

fs/f2fs/recovery.c

···
 	struct dnode_of_data tdn = *dn;
 	nid_t ino, nid;
 	struct inode *inode;
-	unsigned int offset;
+	unsigned int offset, ofs_in_node, max_addrs;
 	block_t bidx;
 	int i;
 
···
 got_it:
 	/* Use the locked dnode page and inode */
 	nid = le32_to_cpu(sum.nid);
+	ofs_in_node = le16_to_cpu(sum.ofs_in_node);
+
+	max_addrs = ADDRS_PER_PAGE(dn->node_page, dn->inode);
+	if (ofs_in_node >= max_addrs) {
+		f2fs_err(sbi, "Inconsistent ofs_in_node:%u in summary, ino:%lu, nid:%u, max:%u",
+			ofs_in_node, dn->inode->i_ino, nid, max_addrs);
+		f2fs_handle_error(sbi, ERROR_INCONSISTENT_SUMMARY);
+		return -EFSCORRUPTED;
+	}
+
 	if (dn->inode->i_ino == nid) {
 		tdn.nid = nid;
 		if (!dn->inode_page_locked)
 			lock_page(dn->inode_page);
 		tdn.node_page = dn->inode_page;
-		tdn.ofs_in_node = le16_to_cpu(sum.ofs_in_node);
+		tdn.ofs_in_node = ofs_in_node;
 		goto truncate_out;
 	} else if (dn->nid == nid) {
-		tdn.ofs_in_node = le16_to_cpu(sum.ofs_in_node);
+		tdn.ofs_in_node = ofs_in_node;
 		goto truncate_out;
 	}
 
···
 			  inode->i_ino, ofs_of_node(dn.node_page),
 			  ofs_of_node(page));
 		err = -EFSCORRUPTED;
+		f2fs_handle_error(sbi, ERROR_INCONSISTENT_FOOTER);
 		goto err;
 	}
 
···
 		if (__is_valid_data_blkaddr(src) &&
 			!f2fs_is_valid_blkaddr(sbi, src, META_POR)) {
 			err = -EFSCORRUPTED;
+			f2fs_handle_error(sbi, ERROR_INVALID_BLKADDR);
 			goto err;
 		}
 
 		if (__is_valid_data_blkaddr(dest) &&
 			!f2fs_is_valid_blkaddr(sbi, dest, META_POR)) {
 			err = -EFSCORRUPTED;
+			f2fs_handle_error(sbi, ERROR_INVALID_BLKADDR);
 			goto err;
 		}
 
···
 					memalloc_retry_wait(GFP_NOFS);
 					goto retry_prev;
 				}
+				goto err;
+			}
+
+			if (f2fs_is_valid_blkaddr(sbi, dest,
+					DATA_GENERIC_ENHANCE_UPDATE)) {
+				f2fs_err(sbi, "Inconsistent dest blkaddr:%u, ino:%lu, ofs:%u",
+					dest, inode->i_ino, dn.ofs_in_node);
+				err = -EFSCORRUPTED;
+				f2fs_handle_error(sbi,
+						ERROR_INVALID_BLKADDR);
 				goto err;
 			}
 

fs/f2fs/segment.c

···
 
 void f2fs_abort_atomic_write(struct inode *inode, bool clean)
 {
-	struct f2fs_sb_info *sbi = F2FS_I_SB(inode);
 	struct f2fs_inode_info *fi = F2FS_I(inode);
 
 	if (!f2fs_is_atomic_file(inode))
···
 	fi->cow_inode = NULL;
 	release_atomic_write_cnt(inode);
 	clear_inode_flag(inode, FI_ATOMIC_FILE);
-
-	spin_lock(&sbi->inode_lock[ATOMIC_FILE]);
-	sbi->atomic_files--;
-	spin_unlock(&sbi->inode_lock[ATOMIC_FILE]);
+	stat_dec_atomic_inode(inode);
 }
 
 static int __replace_atomic_write_block(struct inode *inode, pgoff_t index,
···
 					DATA_GENERIC_ENHANCE)) {
 				f2fs_put_dnode(&dn);
 				ret = -EFSCORRUPTED;
+				f2fs_handle_error(sbi,
+						ERROR_INVALID_BLKADDR);
 				goto out;
 			}
 
···
 {
 	if (time_to_inject(sbi, FAULT_CHECKPOINT)) {
 		f2fs_show_injection_info(sbi, FAULT_CHECKPOINT);
-		f2fs_stop_checkpoint(sbi, false);
+		f2fs_stop_checkpoint(sbi, false, STOP_CP_REASON_FAULT_INJECT);
 	}
 
 	/* balance_fs_bg is able to be pending */
···
 		mutex_lock(&sbi->flush_lock);
 
 		blk_start_plug(&plug);
-		f2fs_sync_dirty_inodes(sbi, FILE_INODE);
+		f2fs_sync_dirty_inodes(sbi, FILE_INODE, false);
 		blk_finish_plug(&plug);
 
 		mutex_unlock(&sbi->flush_lock);
 	}
-	f2fs_sync_fs(sbi->sb, true);
+	f2fs_sync_fs(sbi->sb, 1);
 	stat_inc_bg_cp_count(sbi->stat_info);
 }
 
···
 		} while (ret && --count);
 
 		if (ret) {
-			f2fs_stop_checkpoint(sbi, false);
+			f2fs_stop_checkpoint(sbi, false,
+					STOP_CP_REASON_FLUSH_FAIL);
 			break;
 		}
 
···
 
 		atomic_inc(&dcc->issued_discard);
 
-		f2fs_update_iostat(sbi, FS_DISCARD, 1);
+		f2fs_update_iostat(sbi, NULL, FS_DISCARD, 1);
 
 		lstart += len;
 		start += len;
···
 	f2fs_submit_page_write(&fio);
 
 	stat_inc_meta_count(sbi, page->index);
-	f2fs_update_iostat(sbi, io_type, F2FS_BLKSIZE);
+	f2fs_update_iostat(sbi, NULL, io_type, F2FS_BLKSIZE);
 }
 
 void f2fs_do_write_node_page(unsigned int nid, struct f2fs_io_info *fio)
···
 	set_summary(&sum, nid, 0, 0);
 	do_write_page(&sum, fio);
 
-	f2fs_update_iostat(fio->sbi, fio->io_type, F2FS_BLKSIZE);
+	f2fs_update_iostat(fio->sbi, NULL, fio->io_type, F2FS_BLKSIZE);
 }
 
 void f2fs_outplace_write_data(struct dnode_of_data *dn,
···
 	do_write_page(&sum, fio);
 	f2fs_update_data_blkaddr(dn, fio->new_blkaddr);
 
-	f2fs_update_iostat(sbi, fio->io_type, F2FS_BLKSIZE);
+	f2fs_update_iostat(sbi, dn->inode, fio->io_type, F2FS_BLKSIZE);
 }
 
 int f2fs_inplace_write_data(struct f2fs_io_info *fio)
···
 		f2fs_warn(sbi, "%s: incorrect segment(%u) type, run fsck to fix.",
 			  __func__, segno);
 		err = -EFSCORRUPTED;
+		f2fs_handle_error(sbi, ERROR_INCONSISTENT_SUM_TYPE);
 		goto drop_bio;
 	}
 
···
 	if (!err) {
 		f2fs_update_device_state(fio->sbi, fio->ino,
 						fio->new_blkaddr, 1);
-		f2fs_update_iostat(fio->sbi, fio->io_type, F2FS_BLKSIZE);
+		f2fs_update_iostat(fio->sbi, fio->page->mapping->host,
+						fio->io_type, F2FS_BLKSIZE);
 	}
 
 	return err;
···
 			if (se->type >= NR_PERSISTENT_LOG) {
 				f2fs_err(sbi, "Invalid segment type: %u, segno: %u",
 							se->type, start);
+				f2fs_handle_error(sbi,
+						ERROR_INCONSISTENT_SUM_TYPE);
 				return -EFSCORRUPTED;
 			}
 
···
 			f2fs_err(sbi, "Wrong journal entry on segno %u",
 				 start);
 			err = -EFSCORRUPTED;
+			f2fs_handle_error(sbi, ERROR_CORRUPTED_JOURNAL);
 			break;
 		}
 
···
 			f2fs_err(sbi, "Invalid segment type: %u, segno: %u",
 							se->type, start);
 			err = -EFSCORRUPTED;
+			f2fs_handle_error(sbi, ERROR_INCONSISTENT_SUM_TYPE);
 			break;
 		}
 
···
 	if (sit_valid_blocks[NODE] != valid_node_count(sbi)) {
 		f2fs_err(sbi, "SIT is corrupted node# %u vs %u",
 			 sit_valid_blocks[NODE], valid_node_count(sbi));
+		f2fs_handle_error(sbi, ERROR_INCONSISTENT_NODE_COUNT);
 		return -EFSCORRUPTED;
 	}
 
···
 		f2fs_err(sbi, "SIT is corrupted data# %u %u vs %u",
 			 sit_valid_blocks[DATA], sit_valid_blocks[NODE],
 			 valid_user_blocks(sbi));
+		f2fs_handle_error(sbi, ERROR_INCONSISTENT_BLOCK_COUNT);
 		return -EFSCORRUPTED;
 	}
 
···
 			f2fs_err(sbi,
 				 "Current segment has invalid alloc_type:%d",
 				 curseg->alloc_type);
+			f2fs_handle_error(sbi, ERROR_INVALID_CURSEG);
 			return -EFSCORRUPTED;
 		}
 
···
 				 "Current segment's next free block offset is inconsistent with bitmap, logtype:%u, segno:%u, type:%u, next_blkoff:%u, blkofs:%u",
 				 i, curseg->segno, curseg->alloc_type,
 				 curseg->next_blkoff, blkofs);
+			f2fs_handle_error(sbi, ERROR_INVALID_CURSEG);
 			return -EFSCORRUPTED;
 		}
 	}

fs/f2fs/segment.h

···
 		f2fs_err(sbi, "Mismatch valid blocks %d vs. %d",
 			 GET_SIT_VBLOCKS(raw_sit), valid_blocks);
 		set_sbi_flag(sbi, SBI_NEED_FSCK);
+		f2fs_handle_error(sbi, ERROR_INCONSISTENT_SIT);
 		return -EFSCORRUPTED;
 	}
 
···
 		f2fs_err(sbi, "Wrong valid blocks %d or segno %u",
 			 GET_SIT_VBLOCKS(raw_sit), segno);
 		set_sbi_flag(sbi, SBI_NEED_FSCK);
+		f2fs_handle_error(sbi, ERROR_INCONSISTENT_SIT);
 		return -EFSCORRUPTED;
 	}
 	return 0;

fs/f2fs/super.c

···
 
 static inline void limit_reserve_root(struct f2fs_sb_info *sbi)
 {
-	block_t limit = min((sbi->user_block_count << 1) / 1000,
+	block_t limit = min((sbi->user_block_count >> 3),
 			sbi->user_block_count - sbi->reserved_blocks);
 
-	/* limit is 0.2% */
+	/* limit is 12.5% */
 	if (test_opt(sbi, RESERVE_ROOT) &&
 			F2FS_OPTION(sbi).root_reserved_blocks > limit) {
 		F2FS_OPTION(sbi).root_reserved_blocks = limit;
···
 		return -EINVAL;
 	}
 
+	if (test_opt(sbi, ATGC) && f2fs_lfs_mode(sbi)) {
+		f2fs_err(sbi, "LFS not compatible with ATGC");
+		return -EINVAL;
+	}
+
 	if (f2fs_sb_has_readonly(sbi) && !f2fs_readonly(sbi->sb)) {
 		f2fs_err(sbi, "Allow to mount readonly mode only");
 		return -EROFS;
···
 	if (is_sbi_flag_set(F2FS_SB(sb), SBI_IS_DIRTY))
 		return -EINVAL;
 
-	/* ensure no checkpoint required */
-	if (!llist_empty(&F2FS_SB(sb)->cprc_info.issue_list))
-		return -EINVAL;
+	/* Let's flush checkpoints and stop the thread. */
+	f2fs_flush_ckpt_thread(F2FS_SB(sb));
 
 	/* to avoid deadlock on f2fs_evict_inode->SB_FREEZE_FS */
 	set_sbi_flag(F2FS_SB(sb), SBI_IS_FREEZING);
···
 	f2fs_up_write(&sbi->gc_lock);
 
 	f2fs_sync_fs(sbi->sb, 1);
+
+	/* Let's ensure there's no pending checkpoint anymore */
+	f2fs_flush_ckpt_thread(sbi);
 }
 
 static int f2fs_remount(struct super_block *sb, int *flags, char *data)
···
 		f2fs_stop_ckpt_thread(sbi);
 		need_restart_ckpt = true;
 	} else {
+		/* Flush if the prevous checkpoint, if exists. */
+		f2fs_flush_ckpt_thread(sbi);
+
 		err = f2fs_start_ckpt_thread(sbi);
 		if (err) {
 			f2fs_err(sbi,
···
 	size_t toread;
 	loff_t i_size = i_size_read(inode);
 	struct page *page;
-	char *kaddr;
 
 	if (off > i_size)
 		return 0;
···
 			return -EIO;
 		}
 
-		kaddr = kmap_atomic(page);
-		memcpy(data, kaddr + offset, tocopy);
-		kunmap_atomic(kaddr);
+		memcpy_from_page(data, page, offset, tocopy);
 		f2fs_put_page(page, 1);
 
 		offset = 0;
···
 	size_t towrite = len;
 	struct page *page;
 	void *fsdata = NULL;
-	char *kaddr;
 	int err = 0;
 	int tocopy;
 
···
 			break;
 		}
 
-		kaddr = kmap_atomic(page);
-		memcpy(kaddr + offset, data, tocopy);
-		kunmap_atomic(kaddr);
-		flush_dcache_page(page);
+		memcpy_to_page(page, offset, data, tocopy);
 
 		a_ops->write_end(NULL, mapping, off, tocopy, tocopy,
 						page, fsdata);
···
 	return err;
 }
 
+void f2fs_handle_stop(struct f2fs_sb_info *sbi, unsigned char reason)
+{
+	struct f2fs_super_block *raw_super = F2FS_RAW_SUPER(sbi);
+	int err;
+
+	f2fs_down_write(&sbi->sb_lock);
+
+	if (raw_super->s_stop_reason[reason] < ((1 << BITS_PER_BYTE) - 1))
+		raw_super->s_stop_reason[reason]++;
+
+	err = f2fs_commit_super(sbi, false);
+	if (err)
+		f2fs_err(sbi, "f2fs_commit_super fails to record reason:%u err:%d",
+								reason, err);
+	f2fs_up_write(&sbi->sb_lock);
+}
+
+static void f2fs_save_errors(struct f2fs_sb_info *sbi, unsigned char flag)
+{
+	spin_lock(&sbi->error_lock);
+	if (!test_bit(flag, (unsigned long *)sbi->errors)) {
+		set_bit(flag, (unsigned long *)sbi->errors);
+		sbi->error_dirty = true;
+	}
+	spin_unlock(&sbi->error_lock);
+}
+
+static bool f2fs_update_errors(struct f2fs_sb_info *sbi)
+{
+	bool need_update = false;
+
+	spin_lock(&sbi->error_lock);
+	if (sbi->error_dirty) {
+		memcpy(F2FS_RAW_SUPER(sbi)->s_errors, sbi->errors,
+							MAX_F2FS_ERRORS);
+		sbi->error_dirty = false;
+		need_update = true;
+	}
+	spin_unlock(&sbi->error_lock);
+
+	return need_update;
+}
+
+void f2fs_handle_error(struct f2fs_sb_info *sbi, unsigned char error)
+{
+	int err;
+
+	f2fs_save_errors(sbi, error);
+
+	f2fs_down_write(&sbi->sb_lock);
+
+	if (!f2fs_update_errors(sbi))
+		goto out_unlock;
+
+	err = f2fs_commit_super(sbi, false);
+	if (err)
+		f2fs_err(sbi, "f2fs_commit_super fails to record errors:%u, err:%d",
+								error, err);
+out_unlock:
+	f2fs_up_write(&sbi->sb_lock);
+}
+
 static int f2fs_scan_devices(struct f2fs_sb_info *sbi)
 {
 	struct f2fs_super_block *raw_super = F2FS_RAW_SUPER(sbi);
···
 		f2fs_err(sbi, "Failed to initialize post read workqueue");
 		goto free_devices;
 	}
+
+	spin_lock_init(&sbi->error_lock);
+	memcpy(sbi->errors, raw_super->s_errors, MAX_F2FS_ERRORS);
 
 	sbi->total_valid_node_count =
 				le32_to_cpu(sbi->ckpt->valid_node_count);

fs/f2fs/sysfs.c

···
 	return sprintf(buf, "%lx\n", sbi->s_flag);
 }
 
+static ssize_t cp_status_show(struct f2fs_attr *a,
+		struct f2fs_sb_info *sbi, char *buf)
+{
+	return sprintf(buf, "%x\n", le32_to_cpu(F2FS_CKPT(sbi)->ckpt_flags));
+}
+
 static ssize_t pending_discard_show(struct f2fs_attr *a,
 		struct f2fs_sb_info *sbi, char *buf)
 {
···
 
 	if (!strcmp(a->attr.name, "gc_urgent_high_remaining")) {
 		spin_lock(&sbi->gc_urgent_high_lock);
-		sbi->gc_urgent_high_limited = t != 0;
 		sbi->gc_urgent_high_remaining = t;
 		spin_unlock(&sbi->gc_urgent_high_lock);
 
···
 ATTRIBUTE_GROUPS(f2fs_feat);
 
 F2FS_GENERAL_RO_ATTR(sb_status);
+F2FS_GENERAL_RO_ATTR(cp_status);
 static struct attribute *f2fs_stat_attrs[] = {
 	ATTR_LIST(sb_status),
+	ATTR_LIST(cp_status),
 	NULL,
 };
 ATTRIBUTE_GROUPS(f2fs_stat);

fs/f2fs/verity.c

···
 		size_t n = min_t(size_t, count,
 				 PAGE_SIZE - offset_in_page(pos));
 		struct page *page;
-		void *addr;
 
 		page = read_mapping_page(inode->i_mapping, pos >> PAGE_SHIFT,
 					 NULL);
 		if (IS_ERR(page))
 			return PTR_ERR(page);
 
-		addr = kmap_atomic(page);
-		memcpy(buf, addr + offset_in_page(pos), n);
-		kunmap_atomic(addr);
+		memcpy_from_page(buf, page, offset_in_page(pos), n);
 
 		put_page(page);
 
···
 				 PAGE_SIZE - offset_in_page(pos));
 		struct page *page;
 		void *fsdata;
-		void *addr;
 		int res;
 
 		res = aops->write_begin(NULL, mapping, pos, n, &page, &fsdata);
 		if (res)
 			return res;
 
-		addr = kmap_atomic(page);
-		memcpy(addr + offset_in_page(pos), buf, n);
-		kunmap_atomic(addr);
+		memcpy_to_page(page, offset_in_page(pos), buf, n);
 
 		res = aops->write_end(NULL, mapping, pos, n, n, page, fsdata);
 		if (res < 0)
···
 	if (pos + size < pos || pos + size > inode->i_sb->s_maxbytes ||
 	    pos < f2fs_verity_metadata_pos(inode) || size > INT_MAX) {
 		f2fs_warn(F2FS_I_SB(inode), "invalid verity xattr");
+		f2fs_handle_error(F2FS_I_SB(inode),
+				ERROR_CORRUPTED_VERITY_XATTR);
 		return -EFSCORRUPTED;
 	}
 	if (buf_size) {

fs/f2fs/xattr.c

···
 								inode->i_ino);
 		set_sbi_flag(F2FS_I_SB(inode), SBI_NEED_FSCK);
 		err = -EFSCORRUPTED;
+		f2fs_handle_error(F2FS_I_SB(inode),
+					ERROR_CORRUPTED_XATTR);
 		goto out;
 	}
 check:
···
 						inode->i_ino);
 			set_sbi_flag(F2FS_I_SB(inode), SBI_NEED_FSCK);
 			error = -EFSCORRUPTED;
+			f2fs_handle_error(F2FS_I_SB(inode),
+						ERROR_CORRUPTED_XATTR);
 			goto cleanup;
 		}
 
···
 								inode->i_ino);
 		set_sbi_flag(F2FS_I_SB(inode), SBI_NEED_FSCK);
 		error = -EFSCORRUPTED;
+		f2fs_handle_error(F2FS_I_SB(inode),
+					ERROR_CORRUPTED_XATTR);
 		goto exit;
 	}
 
···
 					inode->i_ino, ENTRY_SIZE(last));
 			set_sbi_flag(F2FS_I_SB(inode), SBI_NEED_FSCK);
 			error = -EFSCORRUPTED;
+			f2fs_handle_error(F2FS_I_SB(inode),
+						ERROR_CORRUPTED_XATTR);
 			goto exit;
 		}
 		last = XATTR_NEXT_ENTRY(last);

include/linux/f2fs_fs.h

···
 	__le32 total_segments;
 } __packed;
 
+/* reason of stop_checkpoint */
+enum stop_cp_reason {
+	STOP_CP_REASON_SHUTDOWN,
+	STOP_CP_REASON_FAULT_INJECT,
+	STOP_CP_REASON_META_PAGE,
+	STOP_CP_REASON_WRITE_FAIL,
+	STOP_CP_REASON_CORRUPTED_SUMMARY,
+	STOP_CP_REASON_UPDATE_INODE,
+	STOP_CP_REASON_FLUSH_FAIL,
+	STOP_CP_REASON_MAX,
+};
+
+#define	MAX_STOP_REASON			32
+
+/* detail reason for EFSCORRUPTED */
+enum f2fs_error {
+	ERROR_CORRUPTED_CLUSTER,
+	ERROR_FAIL_DECOMPRESSION,
+	ERROR_INVALID_BLKADDR,
+	ERROR_CORRUPTED_DIRENT,
+	ERROR_CORRUPTED_INODE,
+	ERROR_INCONSISTENT_SUMMARY,
+	ERROR_INCONSISTENT_FOOTER,
+	ERROR_INCONSISTENT_SUM_TYPE,
+	ERROR_CORRUPTED_JOURNAL,
+	ERROR_INCONSISTENT_NODE_COUNT,
+	ERROR_INCONSISTENT_BLOCK_COUNT,
+	ERROR_INVALID_CURSEG,
+	ERROR_INCONSISTENT_SIT,
+	ERROR_CORRUPTED_VERITY_XATTR,
+	ERROR_CORRUPTED_XATTR,
+	ERROR_MAX,
+};
+
+#define MAX_F2FS_ERRORS			16
+
 struct f2fs_super_block {
 	__le32 magic;			/* Magic Number */
 	__le16 major_ver;		/* Major Version */
···
 	__u8 hot_ext_count;		/* # of hot file extension */
 	__le16  s_encoding;		/* Filename charset encoding */
 	__le16  s_encoding_flags;	/* Filename charset encoding flags */
-	__u8 reserved[306];		/* valid reserved region */
+	__u8 s_stop_reason[MAX_STOP_REASON];	/* stop checkpoint reason */
+	__u8 s_errors[MAX_F2FS_ERRORS];		/* reason of image corrupts */
+	__u8 reserved[258];		/* valid reserved region */
 	__le32 crc;			/* checksum of superblock */
 } __packed;
 

include/trace/events/f2fs.h

···
 TRACE_EVENT(f2fs_update_extent_tree_range,
 
 	TP_PROTO(struct inode *inode, unsigned int pgofs, block_t blkaddr,
-						unsigned int len),
+						unsigned int len,
+						unsigned int c_len),
 
-	TP_ARGS(inode, pgofs, blkaddr, len),
+	TP_ARGS(inode, pgofs, blkaddr, len, c_len),
 
 	TP_STRUCT__entry(
 		__field(dev_t,	dev)
···
 		__field(unsigned int, pgofs)
 		__field(u32, blk)
 		__field(unsigned int, len)
+		__field(unsigned int, c_len)
 	),
 
 	TP_fast_assign(
···
 		__entry->pgofs = pgofs;
 		__entry->blk = blkaddr;
 		__entry->len = len;
+		__entry->c_len = c_len;
 	),
 
 	TP_printk("dev = (%d,%d), ino = %lu, pgofs = %u, "
-					"blkaddr = %u, len = %u",
+					"blkaddr = %u, len = %u, "
+					"c_len = %u",
 		show_dev_ino(__entry),
 		__entry->pgofs,
 		__entry->blk,
-		__entry->len)
+		__entry->len,
+		__entry->c_len)
 );
 
 TRACE_EVENT(f2fs_shrink_extent_tree,
···
 		__field(unsigned long long,	app_bio)
 		__field(unsigned long long,	app_wio)
 		__field(unsigned long long,	app_mio)
+		__field(unsigned long long,	app_bcdio)
+		__field(unsigned long long,	app_mcdio)
 		__field(unsigned long long,	fs_dio)
+		__field(unsigned long long,	fs_cdio)
 		__field(unsigned long long,	fs_nio)
 		__field(unsigned long long,	fs_mio)
 		__field(unsigned long long,	fs_gc_dio)
···
 		__field(unsigned long long,	app_brio)
 		__field(unsigned long long,	app_rio)
 		__field(unsigned long long,	app_mrio)
+		__field(unsigned long long,	app_bcrio)
+		__field(unsigned long long,	app_mcrio)
 		__field(unsigned long long,	fs_drio)
 		__field(unsigned long long,	fs_gdrio)
 		__field(unsigned long long,	fs_cdrio)
···
 		__entry->app_bio	= iostat[APP_BUFFERED_IO];
 		__entry->app_wio	= iostat[APP_WRITE_IO];
 		__entry->app_mio	= iostat[APP_MAPPED_IO];
+		__entry->app_bcdio	= iostat[APP_BUFFERED_CDATA_IO];
+		__entry->app_mcdio	= iostat[APP_MAPPED_CDATA_IO];
 		__entry->fs_dio		= iostat[FS_DATA_IO];
+		__entry->fs_cdio	= iostat[FS_CDATA_IO];
 		__entry->fs_nio		= iostat[FS_NODE_IO];
 		__entry->fs_mio		= iostat[FS_META_IO];
 		__entry->fs_gc_dio	= iostat[FS_GC_DATA_IO];
···
 		__entry->app_brio	= iostat[APP_BUFFERED_READ_IO];
 		__entry->app_rio	= iostat[APP_READ_IO];
 		__entry->app_mrio	= iostat[APP_MAPPED_READ_IO];
+		__entry->app_bcrio	= iostat[APP_BUFFERED_CDATA_READ_IO];
+		__entry->app_mcrio	= iostat[APP_MAPPED_CDATA_READ_IO];
 		__entry->fs_drio	= iostat[FS_DATA_READ_IO];
 		__entry->fs_gdrio	= iostat[FS_GDATA_READ_IO];
 		__entry->fs_cdrio	= iostat[FS_CDATA_READ_IO];
···
 	),
 
 	TP_printk("dev = (%d,%d), "
-		"app [write=%llu (direct=%llu, buffered=%llu), mapped=%llu], "
-		"fs [data=%llu, node=%llu, meta=%llu, discard=%llu], "
+		"app [write=%llu (direct=%llu, buffered=%llu), mapped=%llu, "
+		"compr(buffered=%llu, mapped=%llu)], "
+		"fs [data=%llu, cdata=%llu, node=%llu, meta=%llu, discard=%llu], "
 		"gc [data=%llu, node=%llu], "
 		"cp [data=%llu, node=%llu, meta=%llu], "
 		"app [read=%llu (direct=%llu, buffered=%llu), mapped=%llu], "
-		"fs [data=%llu, (gc_data=%llu, compr_data=%llu), "
+		"compr(buffered=%llu, mapped=%llu)], "
+		"fs [data=%llu, (gc_data=%llu, cdata=%llu), "
 		"node=%llu, meta=%llu]",
 		show_dev(__entry->dev), __entry->app_wio, __entry->app_dio,
-		__entry->app_bio, __entry->app_mio, __entry->fs_dio,
+		__entry->app_bio, __entry->app_mio, __entry->app_bcdio,
+		__entry->app_mcdio, __entry->fs_dio, __entry->fs_cdio,
 		__entry->fs_nio, __entry->fs_mio, __entry->fs_discard,
 		__entry->fs_gc_dio, __entry->fs_gc_nio, __entry->fs_cp_dio,
 		__entry->fs_cp_nio, __entry->fs_cp_mio,
 		__entry->app_rio, __entry->app_drio, __entry->app_brio,
-		__entry->app_mrio, __entry->fs_drio, __entry->fs_gdrio,
+		__entry->app_mrio, __entry->app_bcrio, __entry->app_mcrio,
+		__entry->fs_drio, __entry->fs_gdrio,
 		__entry->fs_cdrio, __entry->fs_nrio, __entry->fs_mrio)
 );