tjh.dev
Linux kernel mirror (for testing)
git.kernel.org/pub/scm/linux/kernel/git/torvalds/linux.git
kernel
os
linux
1/*
2 * Copyright (c) 2000-2002,2005 Silicon Graphics, Inc.
3 * All Rights Reserved.
4 *
5 * This program is free software; you can redistribute it and/or
6 * modify it under the terms of the GNU General Public License as
7 * published by the Free Software Foundation.
8 *
9 * This program is distributed in the hope that it would be useful,
10 * but WITHOUT ANY WARRANTY; without even the implied warranty of
11 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
12 * GNU General Public License for more details.
13 *
14 * You should have received a copy of the GNU General Public License
15 * along with this program; if not, write the Free Software Foundation,
16 * Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA
17 */
18#ifndef __XFS_TRANS_H__
19#define __XFS_TRANS_H__
20
21/*
22 * This is the structure written in the log at the head of
23 * every transaction. It identifies the type and id of the
24 * transaction, and contains the number of items logged by
25 * the transaction so we know how many to expect during recovery.
26 *
27 * Do not change the below structure without redoing the code in
28 * xlog_recover_add_to_trans() and xlog_recover_add_to_cont_trans().
29 */
30typedef struct xfs_trans_header {
31 uint th_magic; /* magic number */
32 uint th_type; /* transaction type */
33 __int32_t th_tid; /* transaction id (unused) */
34 uint th_num_items; /* num items logged by trans */
35} xfs_trans_header_t;
36
37#define XFS_TRANS_HEADER_MAGIC 0x5452414e /* TRAN */
38
39/*
40 * Log item types.
41 */
42#define XFS_LI_EFI 0x1236
43#define XFS_LI_EFD 0x1237
44#define XFS_LI_IUNLINK 0x1238
45#define XFS_LI_INODE 0x123b /* aligned ino chunks, var-size ibufs */
46#define XFS_LI_BUF 0x123c /* v2 bufs, variable sized inode bufs */
47#define XFS_LI_DQUOT 0x123d
48#define XFS_LI_QUOTAOFF 0x123e
49
50/*
51 * Transaction types. Used to distinguish types of buffers.
52 */
53#define XFS_TRANS_SETATTR_NOT_SIZE 1
54#define XFS_TRANS_SETATTR_SIZE 2
55#define XFS_TRANS_INACTIVE 3
56#define XFS_TRANS_CREATE 4
57#define XFS_TRANS_CREATE_TRUNC 5
58#define XFS_TRANS_TRUNCATE_FILE 6
59#define XFS_TRANS_REMOVE 7
60#define XFS_TRANS_LINK 8
61#define XFS_TRANS_RENAME 9
62#define XFS_TRANS_MKDIR 10
63#define XFS_TRANS_RMDIR 11
64#define XFS_TRANS_SYMLINK 12
65#define XFS_TRANS_SET_DMATTRS 13
66#define XFS_TRANS_GROWFS 14
67#define XFS_TRANS_STRAT_WRITE 15
68#define XFS_TRANS_DIOSTRAT 16
69#define XFS_TRANS_WRITE_SYNC 17
70#define XFS_TRANS_WRITEID 18
71#define XFS_TRANS_ADDAFORK 19
72#define XFS_TRANS_ATTRINVAL 20
73#define XFS_TRANS_ATRUNCATE 21
74#define XFS_TRANS_ATTR_SET 22
75#define XFS_TRANS_ATTR_RM 23
76#define XFS_TRANS_ATTR_FLAG 24
77#define XFS_TRANS_CLEAR_AGI_BUCKET 25
78#define XFS_TRANS_QM_SBCHANGE 26
79/*
80 * Dummy entries since we use the transaction type to index into the
81 * trans_type[] in xlog_recover_print_trans_head()
82 */
83#define XFS_TRANS_DUMMY1 27
84#define XFS_TRANS_DUMMY2 28
85#define XFS_TRANS_QM_QUOTAOFF 29
86#define XFS_TRANS_QM_DQALLOC 30
87#define XFS_TRANS_QM_SETQLIM 31
88#define XFS_TRANS_QM_DQCLUSTER 32
89#define XFS_TRANS_QM_QINOCREATE 33
90#define XFS_TRANS_QM_QUOTAOFF_END 34
91#define XFS_TRANS_SB_UNIT 35
92#define XFS_TRANS_FSYNC_TS 36
93#define XFS_TRANS_GROWFSRT_ALLOC 37
94#define XFS_TRANS_GROWFSRT_ZERO 38
95#define XFS_TRANS_GROWFSRT_FREE 39
96#define XFS_TRANS_SWAPEXT 40
97#define XFS_TRANS_TYPE_MAX 40
98/* new transaction types need to be reflected in xfs_logprint(8) */
99
100
101#ifdef __KERNEL__
102struct xfs_buf;
103struct xfs_buftarg;
104struct xfs_efd_log_item;
105struct xfs_efi_log_item;
106struct xfs_inode;
107struct xfs_item_ops;
108struct xfs_log_iovec;
109struct xfs_log_item;
110struct xfs_log_item_desc;
111struct xfs_mount;
112struct xfs_trans;
113struct xfs_dquot_acct;
114
115typedef struct xfs_ail_entry {
116 struct xfs_log_item *ail_forw; /* AIL forw pointer */
117 struct xfs_log_item *ail_back; /* AIL back pointer */
118} xfs_ail_entry_t;
119
120typedef struct xfs_log_item {
121 xfs_ail_entry_t li_ail; /* AIL pointers */
122 xfs_lsn_t li_lsn; /* last on-disk lsn */
123 struct xfs_log_item_desc *li_desc; /* ptr to current desc*/
124 struct xfs_mount *li_mountp; /* ptr to fs mount */
125 uint li_type; /* item type */
126 uint li_flags; /* misc flags */
127 struct xfs_log_item *li_bio_list; /* buffer item list */
128 void (*li_cb)(struct xfs_buf *,
129 struct xfs_log_item *);
130 /* buffer item iodone */
131 /* callback func */
132 struct xfs_item_ops *li_ops; /* function list */
133} xfs_log_item_t;
134
135#define XFS_LI_IN_AIL 0x1
136#define XFS_LI_ABORTED 0x2
137
138typedef struct xfs_item_ops {
139 uint (*iop_size)(xfs_log_item_t *);
140 void (*iop_format)(xfs_log_item_t *, struct xfs_log_iovec *);
141 void (*iop_pin)(xfs_log_item_t *);
142 void (*iop_unpin)(xfs_log_item_t *, int);
143 void (*iop_unpin_remove)(xfs_log_item_t *, struct xfs_trans *);
144 uint (*iop_trylock)(xfs_log_item_t *);
145 void (*iop_unlock)(xfs_log_item_t *);
146 xfs_lsn_t (*iop_committed)(xfs_log_item_t *, xfs_lsn_t);
147 void (*iop_push)(xfs_log_item_t *);
148 void (*iop_pushbuf)(xfs_log_item_t *);
149 void (*iop_committing)(xfs_log_item_t *, xfs_lsn_t);
150} xfs_item_ops_t;
151
152#define IOP_SIZE(ip) (*(ip)->li_ops->iop_size)(ip)
153#define IOP_FORMAT(ip,vp) (*(ip)->li_ops->iop_format)(ip, vp)
154#define IOP_PIN(ip) (*(ip)->li_ops->iop_pin)(ip)
155#define IOP_UNPIN(ip, flags) (*(ip)->li_ops->iop_unpin)(ip, flags)
156#define IOP_UNPIN_REMOVE(ip,tp) (*(ip)->li_ops->iop_unpin_remove)(ip, tp)
157#define IOP_TRYLOCK(ip) (*(ip)->li_ops->iop_trylock)(ip)
158#define IOP_UNLOCK(ip) (*(ip)->li_ops->iop_unlock)(ip)
159#define IOP_COMMITTED(ip, lsn) (*(ip)->li_ops->iop_committed)(ip, lsn)
160#define IOP_PUSH(ip) (*(ip)->li_ops->iop_push)(ip)
161#define IOP_PUSHBUF(ip) (*(ip)->li_ops->iop_pushbuf)(ip)
162#define IOP_COMMITTING(ip, lsn) (*(ip)->li_ops->iop_committing)(ip, lsn)
163
164/*
165 * Return values for the IOP_TRYLOCK() routines.
166 */
167#define XFS_ITEM_SUCCESS 0
168#define XFS_ITEM_PINNED 1
169#define XFS_ITEM_LOCKED 2
170#define XFS_ITEM_FLUSHING 3
171#define XFS_ITEM_PUSHBUF 4
172
173#endif /* __KERNEL__ */
174
175/*
176 * This structure is used to track log items associated with
177 * a transaction. It points to the log item and keeps some
178 * flags to track the state of the log item. It also tracks
179 * the amount of space needed to log the item it describes
180 * once we get to commit processing (see xfs_trans_commit()).
181 */
182typedef struct xfs_log_item_desc {
183 xfs_log_item_t *lid_item;
184 ushort lid_size;
185 unsigned char lid_flags;
186 unsigned char lid_index;
187} xfs_log_item_desc_t;
188
189#define XFS_LID_DIRTY 0x1
190#define XFS_LID_PINNED 0x2
191#define XFS_LID_BUF_STALE 0x8
192
193/*
194 * This structure is used to maintain a chunk list of log_item_desc
195 * structures. The free field is a bitmask indicating which descriptors
196 * in this chunk's array are free. The unused field is the first value
197 * not used since this chunk was allocated.
198 */
199#define XFS_LIC_NUM_SLOTS 15
200typedef struct xfs_log_item_chunk {
201 struct xfs_log_item_chunk *lic_next;
202 ushort lic_free;
203 ushort lic_unused;
204 xfs_log_item_desc_t lic_descs[XFS_LIC_NUM_SLOTS];
205} xfs_log_item_chunk_t;
206
207#define XFS_LIC_MAX_SLOT (XFS_LIC_NUM_SLOTS - 1)
208#define XFS_LIC_FREEMASK ((1 << XFS_LIC_NUM_SLOTS) - 1)
209
210
211/*
212 * Initialize the given chunk. Set the chunk's free descriptor mask
213 * to indicate that all descriptors are free. The caller gets to set
214 * lic_unused to the right value (0 matches all free). The
215 * lic_descs.lid_index values are set up as each desc is allocated.
216 */
217#define XFS_LIC_INIT(cp) xfs_lic_init(cp)
218static inline void xfs_lic_init(xfs_log_item_chunk_t *cp)
219{
220 cp->lic_free = XFS_LIC_FREEMASK;
221}
222
223#define XFS_LIC_INIT_SLOT(cp,slot) xfs_lic_init_slot(cp, slot)
224static inline void xfs_lic_init_slot(xfs_log_item_chunk_t *cp, int slot)
225{
226 cp->lic_descs[slot].lid_index = (unsigned char)(slot);
227}
228
229#define XFS_LIC_VACANCY(cp) xfs_lic_vacancy(cp)
230static inline int xfs_lic_vacancy(xfs_log_item_chunk_t *cp)
231{
232 return cp->lic_free & XFS_LIC_FREEMASK;
233}
234
235#define XFS_LIC_ALL_FREE(cp) xfs_lic_all_free(cp)
236static inline void xfs_lic_all_free(xfs_log_item_chunk_t *cp)
237{
238 cp->lic_free = XFS_LIC_FREEMASK;
239}
240
241#define XFS_LIC_ARE_ALL_FREE(cp) xfs_lic_are_all_free(cp)
242static inline int xfs_lic_are_all_free(xfs_log_item_chunk_t *cp)
243{
244 return ((cp->lic_free & XFS_LIC_FREEMASK) == XFS_LIC_FREEMASK);
245}
246
247#define XFS_LIC_ISFREE(cp,slot) xfs_lic_isfree(cp,slot)
248static inline int xfs_lic_isfree(xfs_log_item_chunk_t *cp, int slot)
249{
250 return (cp->lic_free & (1 << slot));
251}
252
253#define XFS_LIC_CLAIM(cp,slot) xfs_lic_claim(cp,slot)
254static inline void xfs_lic_claim(xfs_log_item_chunk_t *cp, int slot)
255{
256 cp->lic_free &= ~(1 << slot);
257}
258
259#define XFS_LIC_RELSE(cp,slot) xfs_lic_relse(cp,slot)
260static inline void xfs_lic_relse(xfs_log_item_chunk_t *cp, int slot)
261{
262 cp->lic_free |= 1 << slot;
263}
264
265#define XFS_LIC_SLOT(cp,slot) xfs_lic_slot(cp,slot)
266static inline xfs_log_item_desc_t *
267xfs_lic_slot(xfs_log_item_chunk_t *cp, int slot)
268{
269 return &(cp->lic_descs[slot]);
270}
271
272#define XFS_LIC_DESC_TO_SLOT(dp) xfs_lic_desc_to_slot(dp)
273static inline int xfs_lic_desc_to_slot(xfs_log_item_desc_t *dp)
274{
275 return (uint)dp->lid_index;
276}
277
278/*
279 * Calculate the address of a chunk given a descriptor pointer:
280 * dp - dp->lid_index give the address of the start of the lic_descs array.
281 * From this we subtract the offset of the lic_descs field in a chunk.
282 * All of this yields the address of the chunk, which is
283 * cast to a chunk pointer.
284 */
285#define XFS_LIC_DESC_TO_CHUNK(dp) xfs_lic_desc_to_chunk(dp)
286static inline xfs_log_item_chunk_t *
287xfs_lic_desc_to_chunk(xfs_log_item_desc_t *dp)
288{
289 return (xfs_log_item_chunk_t*) \
290 (((xfs_caddr_t)((dp) - (dp)->lid_index)) - \
291 (xfs_caddr_t)(((xfs_log_item_chunk_t*)0)->lic_descs));
292}
293
294#ifdef __KERNEL__
295/*
296 * This structure is used to maintain a list of block ranges that have been
297 * freed in the transaction. The ranges are listed in the perag[] busy list
298 * between when they're freed and the transaction is committed to disk.
299 */
300
301typedef struct xfs_log_busy_slot {
302 xfs_agnumber_t lbc_ag;
303 ushort lbc_idx; /* index in perag.busy[] */
304} xfs_log_busy_slot_t;
305
306#define XFS_LBC_NUM_SLOTS 31
307typedef struct xfs_log_busy_chunk {
308 struct xfs_log_busy_chunk *lbc_next;
309 uint lbc_free; /* free slots bitmask */
310 ushort lbc_unused; /* first unused */
311 xfs_log_busy_slot_t lbc_busy[XFS_LBC_NUM_SLOTS];
312} xfs_log_busy_chunk_t;
313
314#define XFS_LBC_MAX_SLOT (XFS_LBC_NUM_SLOTS - 1)
315#define XFS_LBC_FREEMASK ((1U << XFS_LBC_NUM_SLOTS) - 1)
316
317#define XFS_LBC_INIT(cp) ((cp)->lbc_free = XFS_LBC_FREEMASK)
318#define XFS_LBC_CLAIM(cp, slot) ((cp)->lbc_free &= ~(1 << (slot)))
319#define XFS_LBC_SLOT(cp, slot) (&((cp)->lbc_busy[(slot)]))
320#define XFS_LBC_VACANCY(cp) (((cp)->lbc_free) & XFS_LBC_FREEMASK)
321#define XFS_LBC_ISFREE(cp, slot) ((cp)->lbc_free & (1 << (slot)))
322
323/*
324 * This is the type of function which can be given to xfs_trans_callback()
325 * to be called upon the transaction's commit to disk.
326 */
327typedef void (*xfs_trans_callback_t)(struct xfs_trans *, void *);
328
329/*
330 * This is the structure maintained for every active transaction.
331 */
332typedef struct xfs_trans {
333 unsigned int t_magic; /* magic number */
334 xfs_log_callback_t t_logcb; /* log callback struct */
335 unsigned int t_type; /* transaction type */
336 unsigned int t_log_res; /* amt of log space resvd */
337 unsigned int t_log_count; /* count for perm log res */
338 unsigned int t_blk_res; /* # of blocks resvd */
339 unsigned int t_blk_res_used; /* # of resvd blocks used */
340 unsigned int t_rtx_res; /* # of rt extents resvd */
341 unsigned int t_rtx_res_used; /* # of resvd rt extents used */
342 xfs_log_ticket_t t_ticket; /* log mgr ticket */
343 sema_t t_sema; /* sema for commit completion */
344 xfs_lsn_t t_lsn; /* log seq num of start of
345 * transaction. */
346 xfs_lsn_t t_commit_lsn; /* log seq num of end of
347 * transaction. */
348 struct xfs_mount *t_mountp; /* ptr to fs mount struct */
349 struct xfs_dquot_acct *t_dqinfo; /* acctg info for dquots */
350 xfs_trans_callback_t t_callback; /* transaction callback */
351 void *t_callarg; /* callback arg */
352 unsigned int t_flags; /* misc flags */
353 int64_t t_icount_delta; /* superblock icount change */
354 int64_t t_ifree_delta; /* superblock ifree change */
355 int64_t t_fdblocks_delta; /* superblock fdblocks chg */
356 int64_t t_res_fdblocks_delta; /* on-disk only chg */
357 int64_t t_frextents_delta;/* superblock freextents chg*/
358 int64_t t_res_frextents_delta; /* on-disk only chg */
359#ifdef DEBUG
360 int64_t t_ag_freeblks_delta; /* debugging counter */
361 int64_t t_ag_flist_delta; /* debugging counter */
362 int64_t t_ag_btree_delta; /* debugging counter */
363#endif
364 int64_t t_dblocks_delta;/* superblock dblocks change */
365 int64_t t_agcount_delta;/* superblock agcount change */
366 int64_t t_imaxpct_delta;/* superblock imaxpct change */
367 int64_t t_rextsize_delta;/* superblock rextsize chg */
368 int64_t t_rbmblocks_delta;/* superblock rbmblocks chg */
369 int64_t t_rblocks_delta;/* superblock rblocks change */
370 int64_t t_rextents_delta;/* superblocks rextents chg */
371 int64_t t_rextslog_delta;/* superblocks rextslog chg */
372 unsigned int t_items_free; /* log item descs free */
373 xfs_log_item_chunk_t t_items; /* first log item desc chunk */
374 xfs_trans_header_t t_header; /* header for in-log trans */
375 unsigned int t_busy_free; /* busy descs free */
376 xfs_log_busy_chunk_t t_busy; /* busy/async free blocks */
377 unsigned long t_pflags; /* saved process flags state */
378} xfs_trans_t;
379
380#endif /* __KERNEL__ */
381
382
383#define XFS_TRANS_MAGIC 0x5452414E /* 'TRAN' */
384/*
385 * Values for t_flags.
386 */
387#define XFS_TRANS_DIRTY 0x01 /* something needs to be logged */
388#define XFS_TRANS_SB_DIRTY 0x02 /* superblock is modified */
389#define XFS_TRANS_PERM_LOG_RES 0x04 /* xact took a permanent log res */
390#define XFS_TRANS_SYNC 0x08 /* make commit synchronous */
391#define XFS_TRANS_DQ_DIRTY 0x10 /* at least one dquot in trx dirty */
392#define XFS_TRANS_RESERVE 0x20 /* OK to use reserved data blocks */
393
394/*
395 * Values for call flags parameter.
396 */
397#define XFS_TRANS_NOSLEEP 0x1
398#define XFS_TRANS_WAIT 0x2
399#define XFS_TRANS_RELEASE_LOG_RES 0x4
400#define XFS_TRANS_ABORT 0x8
401
402/*
403 * Field values for xfs_trans_mod_sb.
404 */
405#define XFS_TRANS_SB_ICOUNT 0x00000001
406#define XFS_TRANS_SB_IFREE 0x00000002
407#define XFS_TRANS_SB_FDBLOCKS 0x00000004
408#define XFS_TRANS_SB_RES_FDBLOCKS 0x00000008
409#define XFS_TRANS_SB_FREXTENTS 0x00000010
410#define XFS_TRANS_SB_RES_FREXTENTS 0x00000020
411#define XFS_TRANS_SB_DBLOCKS 0x00000040
412#define XFS_TRANS_SB_AGCOUNT 0x00000080
413#define XFS_TRANS_SB_IMAXPCT 0x00000100
414#define XFS_TRANS_SB_REXTSIZE 0x00000200
415#define XFS_TRANS_SB_RBMBLOCKS 0x00000400
416#define XFS_TRANS_SB_RBLOCKS 0x00000800
417#define XFS_TRANS_SB_REXTENTS 0x00001000
418#define XFS_TRANS_SB_REXTSLOG 0x00002000
419
420
421/*
422 * Various log reservation values.
423 * These are based on the size of the file system block
424 * because that is what most transactions manipulate.
425 * Each adds in an additional 128 bytes per item logged to
426 * try to account for the overhead of the transaction mechanism.
427 *
428 * Note:
429 * Most of the reservations underestimate the number of allocation
430 * groups into which they could free extents in the xfs_bmap_finish()
431 * call. This is because the number in the worst case is quite high
432 * and quite unusual. In order to fix this we need to change
433 * xfs_bmap_finish() to free extents in only a single AG at a time.
434 * This will require changes to the EFI code as well, however, so that
435 * the EFI for the extents not freed is logged again in each transaction.
436 * See bug 261917.
437 */
438
439/*
440 * Per-extent log reservation for the allocation btree changes
441 * involved in freeing or allocating an extent.
442 * 2 trees * (2 blocks/level * max depth - 1) * block size
443 */
444#define XFS_ALLOCFREE_LOG_RES(mp,nx) \
445 ((nx) * (2 * XFS_FSB_TO_B((mp), 2 * XFS_AG_MAXLEVELS(mp) - 1)))
446#define XFS_ALLOCFREE_LOG_COUNT(mp,nx) \
447 ((nx) * (2 * (2 * XFS_AG_MAXLEVELS(mp) - 1)))
448
449/*
450 * Per-directory log reservation for any directory change.
451 * dir blocks: (1 btree block per level + data block + free block) * dblock size
452 * bmap btree: (levels + 2) * max depth * block size
453 * v2 directory blocks can be fragmented below the dirblksize down to the fsb
454 * size, so account for that in the DAENTER macros.
455 */
456#define XFS_DIROP_LOG_RES(mp) \
457 (XFS_FSB_TO_B(mp, XFS_DAENTER_BLOCKS(mp, XFS_DATA_FORK)) + \
458 (XFS_FSB_TO_B(mp, XFS_DAENTER_BMAPS(mp, XFS_DATA_FORK) + 1)))
459#define XFS_DIROP_LOG_COUNT(mp) \
460 (XFS_DAENTER_BLOCKS(mp, XFS_DATA_FORK) + \
461 XFS_DAENTER_BMAPS(mp, XFS_DATA_FORK) + 1)
462
463/*
464 * In a write transaction we can allocate a maximum of 2
465 * extents. This gives:
466 * the inode getting the new extents: inode size
467 * the inode\'s bmap btree: max depth * block size
468 * the agfs of the ags from which the extents are allocated: 2 * sector
469 * the superblock free block counter: sector size
470 * the allocation btrees: 2 exts * 2 trees * (2 * max depth - 1) * block size
471 * And the bmap_finish transaction can free bmap blocks in a join:
472 * the agfs of the ags containing the blocks: 2 * sector size
473 * the agfls of the ags containing the blocks: 2 * sector size
474 * the super block free block counter: sector size
475 * the allocation btrees: 2 exts * 2 trees * (2 * max depth - 1) * block size
476 */
477#define XFS_CALC_WRITE_LOG_RES(mp) \
478 (MAX( \
479 ((mp)->m_sb.sb_inodesize + \
480 XFS_FSB_TO_B((mp), XFS_BM_MAXLEVELS(mp, XFS_DATA_FORK)) + \
481 (2 * (mp)->m_sb.sb_sectsize) + \
482 (mp)->m_sb.sb_sectsize + \
483 XFS_ALLOCFREE_LOG_RES(mp, 2) + \
484 (128 * (4 + XFS_BM_MAXLEVELS(mp, XFS_DATA_FORK) + XFS_ALLOCFREE_LOG_COUNT(mp, 2)))),\
485 ((2 * (mp)->m_sb.sb_sectsize) + \
486 (2 * (mp)->m_sb.sb_sectsize) + \
487 (mp)->m_sb.sb_sectsize + \
488 XFS_ALLOCFREE_LOG_RES(mp, 2) + \
489 (128 * (5 + XFS_ALLOCFREE_LOG_COUNT(mp, 2))))))
490
491#define XFS_WRITE_LOG_RES(mp) ((mp)->m_reservations.tr_write)
492
493/*
494 * In truncating a file we free up to two extents at once. We can modify:
495 * the inode being truncated: inode size
496 * the inode\'s bmap btree: (max depth + 1) * block size
497 * And the bmap_finish transaction can free the blocks and bmap blocks:
498 * the agf for each of the ags: 4 * sector size
499 * the agfl for each of the ags: 4 * sector size
500 * the super block to reflect the freed blocks: sector size
501 * worst case split in allocation btrees per extent assuming 4 extents:
502 * 4 exts * 2 trees * (2 * max depth - 1) * block size
503 * the inode btree: max depth * blocksize
504 * the allocation btrees: 2 trees * (max depth - 1) * block size
505 */
506#define XFS_CALC_ITRUNCATE_LOG_RES(mp) \
507 (MAX( \
508 ((mp)->m_sb.sb_inodesize + \
509 XFS_FSB_TO_B((mp), XFS_BM_MAXLEVELS(mp, XFS_DATA_FORK) + 1) + \
510 (128 * (2 + XFS_BM_MAXLEVELS(mp, XFS_DATA_FORK)))), \
511 ((4 * (mp)->m_sb.sb_sectsize) + \
512 (4 * (mp)->m_sb.sb_sectsize) + \
513 (mp)->m_sb.sb_sectsize + \
514 XFS_ALLOCFREE_LOG_RES(mp, 4) + \
515 (128 * (9 + XFS_ALLOCFREE_LOG_COUNT(mp, 4))) + \
516 (128 * 5) + \
517 XFS_ALLOCFREE_LOG_RES(mp, 1) + \
518 (128 * (2 + XFS_IALLOC_BLOCKS(mp) + XFS_IN_MAXLEVELS(mp) + \
519 XFS_ALLOCFREE_LOG_COUNT(mp, 1))))))
520
521#define XFS_ITRUNCATE_LOG_RES(mp) ((mp)->m_reservations.tr_itruncate)
522
523/*
524 * In renaming a files we can modify:
525 * the four inodes involved: 4 * inode size
526 * the two directory btrees: 2 * (max depth + v2) * dir block size
527 * the two directory bmap btrees: 2 * max depth * block size
528 * And the bmap_finish transaction can free dir and bmap blocks (two sets
529 * of bmap blocks) giving:
530 * the agf for the ags in which the blocks live: 3 * sector size
531 * the agfl for the ags in which the blocks live: 3 * sector size
532 * the superblock for the free block count: sector size
533 * the allocation btrees: 3 exts * 2 trees * (2 * max depth - 1) * block size
534 */
535#define XFS_CALC_RENAME_LOG_RES(mp) \
536 (MAX( \
537 ((4 * (mp)->m_sb.sb_inodesize) + \
538 (2 * XFS_DIROP_LOG_RES(mp)) + \
539 (128 * (4 + 2 * XFS_DIROP_LOG_COUNT(mp)))), \
540 ((3 * (mp)->m_sb.sb_sectsize) + \
541 (3 * (mp)->m_sb.sb_sectsize) + \
542 (mp)->m_sb.sb_sectsize + \
543 XFS_ALLOCFREE_LOG_RES(mp, 3) + \
544 (128 * (7 + XFS_ALLOCFREE_LOG_COUNT(mp, 3))))))
545
546#define XFS_RENAME_LOG_RES(mp) ((mp)->m_reservations.tr_rename)
547
548/*
549 * For creating a link to an inode:
550 * the parent directory inode: inode size
551 * the linked inode: inode size
552 * the directory btree could split: (max depth + v2) * dir block size
553 * the directory bmap btree could join or split: (max depth + v2) * blocksize
554 * And the bmap_finish transaction can free some bmap blocks giving:
555 * the agf for the ag in which the blocks live: sector size
556 * the agfl for the ag in which the blocks live: sector size
557 * the superblock for the free block count: sector size
558 * the allocation btrees: 2 trees * (2 * max depth - 1) * block size
559 */
560#define XFS_CALC_LINK_LOG_RES(mp) \
561 (MAX( \
562 ((mp)->m_sb.sb_inodesize + \
563 (mp)->m_sb.sb_inodesize + \
564 XFS_DIROP_LOG_RES(mp) + \
565 (128 * (2 + XFS_DIROP_LOG_COUNT(mp)))), \
566 ((mp)->m_sb.sb_sectsize + \
567 (mp)->m_sb.sb_sectsize + \
568 (mp)->m_sb.sb_sectsize + \
569 XFS_ALLOCFREE_LOG_RES(mp, 1) + \
570 (128 * (3 + XFS_ALLOCFREE_LOG_COUNT(mp, 1))))))
571
572#define XFS_LINK_LOG_RES(mp) ((mp)->m_reservations.tr_link)
573
574/*
575 * For removing a directory entry we can modify:
576 * the parent directory inode: inode size
577 * the removed inode: inode size
578 * the directory btree could join: (max depth + v2) * dir block size
579 * the directory bmap btree could join or split: (max depth + v2) * blocksize
580 * And the bmap_finish transaction can free the dir and bmap blocks giving:
581 * the agf for the ag in which the blocks live: 2 * sector size
582 * the agfl for the ag in which the blocks live: 2 * sector size
583 * the superblock for the free block count: sector size
584 * the allocation btrees: 2 exts * 2 trees * (2 * max depth - 1) * block size
585 */
586#define XFS_CALC_REMOVE_LOG_RES(mp) \
587 (MAX( \
588 ((mp)->m_sb.sb_inodesize + \
589 (mp)->m_sb.sb_inodesize + \
590 XFS_DIROP_LOG_RES(mp) + \
591 (128 * (2 + XFS_DIROP_LOG_COUNT(mp)))), \
592 ((2 * (mp)->m_sb.sb_sectsize) + \
593 (2 * (mp)->m_sb.sb_sectsize) + \
594 (mp)->m_sb.sb_sectsize + \
595 XFS_ALLOCFREE_LOG_RES(mp, 2) + \
596 (128 * (5 + XFS_ALLOCFREE_LOG_COUNT(mp, 2))))))
597
598#define XFS_REMOVE_LOG_RES(mp) ((mp)->m_reservations.tr_remove)
599
600/*
601 * For symlink we can modify:
602 * the parent directory inode: inode size
603 * the new inode: inode size
604 * the inode btree entry: 1 block
605 * the directory btree: (max depth + v2) * dir block size
606 * the directory inode\'s bmap btree: (max depth + v2) * block size
607 * the blocks for the symlink: 1 KB
608 * Or in the first xact we allocate some inodes giving:
609 * the agi and agf of the ag getting the new inodes: 2 * sectorsize
610 * the inode blocks allocated: XFS_IALLOC_BLOCKS * blocksize
611 * the inode btree: max depth * blocksize
612 * the allocation btrees: 2 trees * (2 * max depth - 1) * block size
613 */
614#define XFS_CALC_SYMLINK_LOG_RES(mp) \
615 (MAX( \
616 ((mp)->m_sb.sb_inodesize + \
617 (mp)->m_sb.sb_inodesize + \
618 XFS_FSB_TO_B(mp, 1) + \
619 XFS_DIROP_LOG_RES(mp) + \
620 1024 + \
621 (128 * (4 + XFS_DIROP_LOG_COUNT(mp)))), \
622 (2 * (mp)->m_sb.sb_sectsize + \
623 XFS_FSB_TO_B((mp), XFS_IALLOC_BLOCKS((mp))) + \
624 XFS_FSB_TO_B((mp), XFS_IN_MAXLEVELS(mp)) + \
625 XFS_ALLOCFREE_LOG_RES(mp, 1) + \
626 (128 * (2 + XFS_IALLOC_BLOCKS(mp) + XFS_IN_MAXLEVELS(mp) + \
627 XFS_ALLOCFREE_LOG_COUNT(mp, 1))))))
628
629#define XFS_SYMLINK_LOG_RES(mp) ((mp)->m_reservations.tr_symlink)
630
631/*
632 * For create we can modify:
633 * the parent directory inode: inode size
634 * the new inode: inode size
635 * the inode btree entry: block size
636 * the superblock for the nlink flag: sector size
637 * the directory btree: (max depth + v2) * dir block size
638 * the directory inode\'s bmap btree: (max depth + v2) * block size
639 * Or in the first xact we allocate some inodes giving:
640 * the agi and agf of the ag getting the new inodes: 2 * sectorsize
641 * the superblock for the nlink flag: sector size
642 * the inode blocks allocated: XFS_IALLOC_BLOCKS * blocksize
643 * the inode btree: max depth * blocksize
644 * the allocation btrees: 2 trees * (max depth - 1) * block size
645 */
646#define XFS_CALC_CREATE_LOG_RES(mp) \
647 (MAX( \
648 ((mp)->m_sb.sb_inodesize + \
649 (mp)->m_sb.sb_inodesize + \
650 (mp)->m_sb.sb_sectsize + \
651 XFS_FSB_TO_B(mp, 1) + \
652 XFS_DIROP_LOG_RES(mp) + \
653 (128 * (3 + XFS_DIROP_LOG_COUNT(mp)))), \
654 (3 * (mp)->m_sb.sb_sectsize + \
655 XFS_FSB_TO_B((mp), XFS_IALLOC_BLOCKS((mp))) + \
656 XFS_FSB_TO_B((mp), XFS_IN_MAXLEVELS(mp)) + \
657 XFS_ALLOCFREE_LOG_RES(mp, 1) + \
658 (128 * (2 + XFS_IALLOC_BLOCKS(mp) + XFS_IN_MAXLEVELS(mp) + \
659 XFS_ALLOCFREE_LOG_COUNT(mp, 1))))))
660
661#define XFS_CREATE_LOG_RES(mp) ((mp)->m_reservations.tr_create)
662
663/*
664 * Making a new directory is the same as creating a new file.
665 */
666#define XFS_CALC_MKDIR_LOG_RES(mp) XFS_CALC_CREATE_LOG_RES(mp)
667
668#define XFS_MKDIR_LOG_RES(mp) ((mp)->m_reservations.tr_mkdir)
669
670/*
671 * In freeing an inode we can modify:
672 * the inode being freed: inode size
673 * the super block free inode counter: sector size
674 * the agi hash list and counters: sector size
675 * the inode btree entry: block size
676 * the on disk inode before ours in the agi hash list: inode cluster size
677 * the inode btree: max depth * blocksize
678 * the allocation btrees: 2 trees * (max depth - 1) * block size
679 */
680#define XFS_CALC_IFREE_LOG_RES(mp) \
681 ((mp)->m_sb.sb_inodesize + \
682 (mp)->m_sb.sb_sectsize + \
683 (mp)->m_sb.sb_sectsize + \
684 XFS_FSB_TO_B((mp), 1) + \
685 MAX((__uint16_t)XFS_FSB_TO_B((mp), 1), XFS_INODE_CLUSTER_SIZE(mp)) + \
686 (128 * 5) + \
687 XFS_ALLOCFREE_LOG_RES(mp, 1) + \
688 (128 * (2 + XFS_IALLOC_BLOCKS(mp) + XFS_IN_MAXLEVELS(mp) + \
689 XFS_ALLOCFREE_LOG_COUNT(mp, 1))))
690
691
692#define XFS_IFREE_LOG_RES(mp) ((mp)->m_reservations.tr_ifree)
693
694/*
695 * When only changing the inode we log the inode and possibly the superblock
696 * We also add a bit of slop for the transaction stuff.
697 */
698#define XFS_CALC_ICHANGE_LOG_RES(mp) ((mp)->m_sb.sb_inodesize + \
699 (mp)->m_sb.sb_sectsize + 512)
700
701#define XFS_ICHANGE_LOG_RES(mp) ((mp)->m_reservations.tr_ichange)
702
703/*
704 * Growing the data section of the filesystem.
705 * superblock
706 * agi and agf
707 * allocation btrees
708 */
709#define XFS_CALC_GROWDATA_LOG_RES(mp) \
710 ((mp)->m_sb.sb_sectsize * 3 + \
711 XFS_ALLOCFREE_LOG_RES(mp, 1) + \
712 (128 * (3 + XFS_ALLOCFREE_LOG_COUNT(mp, 1))))
713
714#define XFS_GROWDATA_LOG_RES(mp) ((mp)->m_reservations.tr_growdata)
715
716/*
717 * Growing the rt section of the filesystem.
718 * In the first set of transactions (ALLOC) we allocate space to the
719 * bitmap or summary files.
720 * superblock: sector size
721 * agf of the ag from which the extent is allocated: sector size
722 * bmap btree for bitmap/summary inode: max depth * blocksize
723 * bitmap/summary inode: inode size
724 * allocation btrees for 1 block alloc: 2 * (2 * maxdepth - 1) * blocksize
725 */
726#define XFS_CALC_GROWRTALLOC_LOG_RES(mp) \
727 (2 * (mp)->m_sb.sb_sectsize + \
728 XFS_FSB_TO_B((mp), XFS_BM_MAXLEVELS(mp, XFS_DATA_FORK)) + \
729 (mp)->m_sb.sb_inodesize + \
730 XFS_ALLOCFREE_LOG_RES(mp, 1) + \
731 (128 * \
732 (3 + XFS_BM_MAXLEVELS(mp, XFS_DATA_FORK) + \
733 XFS_ALLOCFREE_LOG_COUNT(mp, 1))))
734
735#define XFS_GROWRTALLOC_LOG_RES(mp) ((mp)->m_reservations.tr_growrtalloc)
736
737/*
738 * Growing the rt section of the filesystem.
739 * In the second set of transactions (ZERO) we zero the new metadata blocks.
740 * one bitmap/summary block: blocksize
741 */
742#define XFS_CALC_GROWRTZERO_LOG_RES(mp) \
743 ((mp)->m_sb.sb_blocksize + 128)
744
745#define XFS_GROWRTZERO_LOG_RES(mp) ((mp)->m_reservations.tr_growrtzero)
746
747/*
748 * Growing the rt section of the filesystem.
749 * In the third set of transactions (FREE) we update metadata without
750 * allocating any new blocks.
751 * superblock: sector size
752 * bitmap inode: inode size
753 * summary inode: inode size
754 * one bitmap block: blocksize
755 * summary blocks: new summary size
756 */
757#define XFS_CALC_GROWRTFREE_LOG_RES(mp) \
758 ((mp)->m_sb.sb_sectsize + \
759 2 * (mp)->m_sb.sb_inodesize + \
760 (mp)->m_sb.sb_blocksize + \
761 (mp)->m_rsumsize + \
762 (128 * 5))
763
764#define XFS_GROWRTFREE_LOG_RES(mp) ((mp)->m_reservations.tr_growrtfree)
765
766/*
767 * Logging the inode modification timestamp on a synchronous write.
768 * inode
769 */
770#define XFS_CALC_SWRITE_LOG_RES(mp) \
771 ((mp)->m_sb.sb_inodesize + 128)
772
773#define XFS_SWRITE_LOG_RES(mp) ((mp)->m_reservations.tr_swrite)
774
775/*
776 * Logging the inode timestamps on an fsync -- same as SWRITE
777 * as long as SWRITE logs the entire inode core
778 */
779#define XFS_FSYNC_TS_LOG_RES(mp) ((mp)->m_reservations.tr_swrite)
780
781/*
782 * Logging the inode mode bits when writing a setuid/setgid file
783 * inode
784 */
785#define XFS_CALC_WRITEID_LOG_RES(mp) \
786 ((mp)->m_sb.sb_inodesize + 128)
787
788#define XFS_WRITEID_LOG_RES(mp) ((mp)->m_reservations.tr_swrite)
789
790/*
791 * Converting the inode from non-attributed to attributed.
792 * the inode being converted: inode size
793 * agf block and superblock (for block allocation)
794 * the new block (directory sized)
795 * bmap blocks for the new directory block
796 * allocation btrees
797 */
798#define XFS_CALC_ADDAFORK_LOG_RES(mp) \
799 ((mp)->m_sb.sb_inodesize + \
800 (mp)->m_sb.sb_sectsize * 2 + \
801 (mp)->m_dirblksize + \
802 XFS_FSB_TO_B(mp, (XFS_DAENTER_BMAP1B(mp, XFS_DATA_FORK) + 1)) + \
803 XFS_ALLOCFREE_LOG_RES(mp, 1) + \
804 (128 * (4 + (XFS_DAENTER_BMAP1B(mp, XFS_DATA_FORK) + 1) + \
805 XFS_ALLOCFREE_LOG_COUNT(mp, 1))))
806
807#define XFS_ADDAFORK_LOG_RES(mp) ((mp)->m_reservations.tr_addafork)
808
809/*
810 * Removing the attribute fork of a file
811 * the inode being truncated: inode size
812 * the inode\'s bmap btree: max depth * block size
813 * And the bmap_finish transaction can free the blocks and bmap blocks:
814 * the agf for each of the ags: 4 * sector size
815 * the agfl for each of the ags: 4 * sector size
816 * the super block to reflect the freed blocks: sector size
817 * worst case split in allocation btrees per extent assuming 4 extents:
818 * 4 exts * 2 trees * (2 * max depth - 1) * block size
819 */
820#define XFS_CALC_ATTRINVAL_LOG_RES(mp) \
821 (MAX( \
822 ((mp)->m_sb.sb_inodesize + \
823 XFS_FSB_TO_B((mp), XFS_BM_MAXLEVELS(mp, XFS_ATTR_FORK)) + \
824 (128 * (1 + XFS_BM_MAXLEVELS(mp, XFS_ATTR_FORK)))), \
825 ((4 * (mp)->m_sb.sb_sectsize) + \
826 (4 * (mp)->m_sb.sb_sectsize) + \
827 (mp)->m_sb.sb_sectsize + \
828 XFS_ALLOCFREE_LOG_RES(mp, 4) + \
829 (128 * (9 + XFS_ALLOCFREE_LOG_COUNT(mp, 4))))))
830
831#define XFS_ATTRINVAL_LOG_RES(mp) ((mp)->m_reservations.tr_attrinval)
832
833/*
834 * Setting an attribute.
835 * the inode getting the attribute
836 * the superblock for allocations
837 * the agfs extents are allocated from
838 * the attribute btree * max depth
839 * the inode allocation btree
840 * Since attribute transaction space is dependent on the size of the attribute,
841 * the calculation is done partially at mount time and partially at runtime.
842 */
843#define XFS_CALC_ATTRSET_LOG_RES(mp) \
844 ((mp)->m_sb.sb_inodesize + \
845 (mp)->m_sb.sb_sectsize + \
846 XFS_FSB_TO_B((mp), XFS_DA_NODE_MAXDEPTH) + \
847 (128 * (2 + XFS_DA_NODE_MAXDEPTH)))
848
849#define XFS_ATTRSET_LOG_RES(mp, ext) \
850 ((mp)->m_reservations.tr_attrset + \
851 (ext * (mp)->m_sb.sb_sectsize) + \
852 (ext * XFS_FSB_TO_B((mp), XFS_BM_MAXLEVELS(mp, XFS_ATTR_FORK))) + \
853 (128 * (ext + (ext * XFS_BM_MAXLEVELS(mp, XFS_ATTR_FORK)))))
854
855/*
856 * Removing an attribute.
857 * the inode: inode size
858 * the attribute btree could join: max depth * block size
859 * the inode bmap btree could join or split: max depth * block size
860 * And the bmap_finish transaction can free the attr blocks freed giving:
861 * the agf for the ag in which the blocks live: 2 * sector size
862 * the agfl for the ag in which the blocks live: 2 * sector size
863 * the superblock for the free block count: sector size
864 * the allocation btrees: 2 exts * 2 trees * (2 * max depth - 1) * block size
865 */
866#define XFS_CALC_ATTRRM_LOG_RES(mp) \
867 (MAX( \
868 ((mp)->m_sb.sb_inodesize + \
869 XFS_FSB_TO_B((mp), XFS_DA_NODE_MAXDEPTH) + \
870 XFS_FSB_TO_B((mp), XFS_BM_MAXLEVELS(mp, XFS_ATTR_FORK)) + \
871 (128 * (1 + XFS_DA_NODE_MAXDEPTH + XFS_BM_MAXLEVELS(mp, XFS_DATA_FORK)))), \
872 ((2 * (mp)->m_sb.sb_sectsize) + \
873 (2 * (mp)->m_sb.sb_sectsize) + \
874 (mp)->m_sb.sb_sectsize + \
875 XFS_ALLOCFREE_LOG_RES(mp, 2) + \
876 (128 * (5 + XFS_ALLOCFREE_LOG_COUNT(mp, 2))))))
877
878#define XFS_ATTRRM_LOG_RES(mp) ((mp)->m_reservations.tr_attrrm)
879
880/*
881 * Clearing a bad agino number in an agi hash bucket.
882 */
883#define XFS_CALC_CLEAR_AGI_BUCKET_LOG_RES(mp) \
884 ((mp)->m_sb.sb_sectsize + 128)
885
886#define XFS_CLEAR_AGI_BUCKET_LOG_RES(mp) ((mp)->m_reservations.tr_clearagi)
887
888
889/*
890 * Various log count values.
891 */
892#define XFS_DEFAULT_LOG_COUNT 1
893#define XFS_DEFAULT_PERM_LOG_COUNT 2
894#define XFS_ITRUNCATE_LOG_COUNT 2
895#define XFS_INACTIVE_LOG_COUNT 2
896#define XFS_CREATE_LOG_COUNT 2
897#define XFS_MKDIR_LOG_COUNT 3
898#define XFS_SYMLINK_LOG_COUNT 3
899#define XFS_REMOVE_LOG_COUNT 2
900#define XFS_LINK_LOG_COUNT 2
901#define XFS_RENAME_LOG_COUNT 2
902#define XFS_WRITE_LOG_COUNT 2
903#define XFS_ADDAFORK_LOG_COUNT 2
904#define XFS_ATTRINVAL_LOG_COUNT 1
905#define XFS_ATTRSET_LOG_COUNT 3
906#define XFS_ATTRRM_LOG_COUNT 3
907
908/*
909 * Here we centralize the specification of XFS meta-data buffer
910 * reference count values. This determine how hard the buffer
911 * cache tries to hold onto the buffer.
912 */
913#define XFS_AGF_REF 4
914#define XFS_AGI_REF 4
915#define XFS_AGFL_REF 3
916#define XFS_INO_BTREE_REF 3
917#define XFS_ALLOC_BTREE_REF 2
918#define XFS_BMAP_BTREE_REF 2
919#define XFS_DIR_BTREE_REF 2
920#define XFS_ATTR_BTREE_REF 1
921#define XFS_INO_REF 1
922#define XFS_DQUOT_REF 1
923
924#ifdef __KERNEL__
925/*
926 * XFS transaction mechanism exported interfaces that are
927 * actually macros.
928 */
929#define xfs_trans_get_log_res(tp) ((tp)->t_log_res)
930#define xfs_trans_get_log_count(tp) ((tp)->t_log_count)
931#define xfs_trans_get_block_res(tp) ((tp)->t_blk_res)
932#define xfs_trans_set_sync(tp) ((tp)->t_flags |= XFS_TRANS_SYNC)
933
934#ifdef DEBUG
935#define xfs_trans_agblocks_delta(tp, d) ((tp)->t_ag_freeblks_delta += (int64_t)d)
936#define xfs_trans_agflist_delta(tp, d) ((tp)->t_ag_flist_delta += (int64_t)d)
937#define xfs_trans_agbtree_delta(tp, d) ((tp)->t_ag_btree_delta += (int64_t)d)
938#else
939#define xfs_trans_agblocks_delta(tp, d)
940#define xfs_trans_agflist_delta(tp, d)
941#define xfs_trans_agbtree_delta(tp, d)
942#endif
943
944/*
945 * XFS transaction mechanism exported interfaces.
946 */
947void xfs_trans_init(struct xfs_mount *);
948xfs_trans_t *xfs_trans_alloc(struct xfs_mount *, uint);
949xfs_trans_t *_xfs_trans_alloc(struct xfs_mount *, uint);
950xfs_trans_t *xfs_trans_dup(xfs_trans_t *);
951int xfs_trans_reserve(xfs_trans_t *, uint, uint, uint,
952 uint, uint);
953void xfs_trans_mod_sb(xfs_trans_t *, uint, int64_t);
954struct xfs_buf *xfs_trans_get_buf(xfs_trans_t *, struct xfs_buftarg *, xfs_daddr_t,
955 int, uint);
956int xfs_trans_read_buf(struct xfs_mount *, xfs_trans_t *,
957 struct xfs_buftarg *, xfs_daddr_t, int, uint,
958 struct xfs_buf **);
959struct xfs_buf *xfs_trans_getsb(xfs_trans_t *, struct xfs_mount *, int);
960
961void xfs_trans_brelse(xfs_trans_t *, struct xfs_buf *);
962void xfs_trans_bjoin(xfs_trans_t *, struct xfs_buf *);
963void xfs_trans_bhold(xfs_trans_t *, struct xfs_buf *);
964void xfs_trans_bhold_release(xfs_trans_t *, struct xfs_buf *);
965void xfs_trans_binval(xfs_trans_t *, struct xfs_buf *);
966void xfs_trans_inode_buf(xfs_trans_t *, struct xfs_buf *);
967void xfs_trans_stale_inode_buf(xfs_trans_t *, struct xfs_buf *);
968void xfs_trans_dquot_buf(xfs_trans_t *, struct xfs_buf *, uint);
969void xfs_trans_inode_alloc_buf(xfs_trans_t *, struct xfs_buf *);
970int xfs_trans_iget(struct xfs_mount *, xfs_trans_t *,
971 xfs_ino_t , uint, uint, struct xfs_inode **);
972void xfs_trans_ijoin(xfs_trans_t *, struct xfs_inode *, uint);
973void xfs_trans_ihold(xfs_trans_t *, struct xfs_inode *);
974void xfs_trans_log_buf(xfs_trans_t *, struct xfs_buf *, uint, uint);
975void xfs_trans_log_inode(xfs_trans_t *, struct xfs_inode *, uint);
976struct xfs_efi_log_item *xfs_trans_get_efi(xfs_trans_t *, uint);
977void xfs_efi_release(struct xfs_efi_log_item *, uint);
978void xfs_trans_log_efi_extent(xfs_trans_t *,
979 struct xfs_efi_log_item *,
980 xfs_fsblock_t,
981 xfs_extlen_t);
982struct xfs_efd_log_item *xfs_trans_get_efd(xfs_trans_t *,
983 struct xfs_efi_log_item *,
984 uint);
985void xfs_trans_log_efd_extent(xfs_trans_t *,
986 struct xfs_efd_log_item *,
987 xfs_fsblock_t,
988 xfs_extlen_t);
989int _xfs_trans_commit(xfs_trans_t *,
990 uint flags,
991 xfs_lsn_t *,
992 int *);
993#define xfs_trans_commit(tp, flags, lsn) \
994 _xfs_trans_commit(tp, flags, lsn, NULL)
995void xfs_trans_cancel(xfs_trans_t *, int);
996void xfs_trans_ail_init(struct xfs_mount *);
997xfs_lsn_t xfs_trans_push_ail(struct xfs_mount *, xfs_lsn_t);
998xfs_lsn_t xfs_trans_tail_ail(struct xfs_mount *);
999void xfs_trans_unlocked_item(struct xfs_mount *,
1000 xfs_log_item_t *);
1001xfs_log_busy_slot_t *xfs_trans_add_busy(xfs_trans_t *tp,
1002 xfs_agnumber_t ag,
1003 xfs_extlen_t idx);
1004
1005#endif /* __KERNEL__ */
1006
1007#endif /* __XFS_TRANS_H__ */