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Linus Torvalds1da177e2005-04-16 15:20:36 -07001/*
Nathan Scott7b718762005-11-02 14:58:39 +11002 * Copyright (c) 2000-2002,2005 Silicon Graphics, Inc.
3 * All Rights Reserved.
Linus Torvalds1da177e2005-04-16 15:20:36 -07004 *
Nathan Scott7b718762005-11-02 14:58:39 +11005 * This program is free software; you can redistribute it and/or
6 * modify it under the terms of the GNU General Public License as
Linus Torvalds1da177e2005-04-16 15:20:36 -07007 * published by the Free Software Foundation.
8 *
Nathan Scott7b718762005-11-02 14:58:39 +11009 * 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.
Linus Torvalds1da177e2005-04-16 15:20:36 -070013 *
Nathan Scott7b718762005-11-02 14:58:39 +110014 * 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
Linus Torvalds1da177e2005-04-16 15:20:36 -070017 */
18#ifndef __XFS_TRANS_H__
19#define __XFS_TRANS_H__
20
Barry Naujok847fff52008-10-30 17:05:38 +110021struct xfs_log_item;
22
Linus Torvalds1da177e2005-04-16 15:20:36 -070023/*
24 * This is the structure written in the log at the head of
25 * every transaction. It identifies the type and id of the
26 * transaction, and contains the number of items logged by
27 * the transaction so we know how many to expect during recovery.
28 *
29 * Do not change the below structure without redoing the code in
30 * xlog_recover_add_to_trans() and xlog_recover_add_to_cont_trans().
31 */
32typedef struct xfs_trans_header {
33 uint th_magic; /* magic number */
34 uint th_type; /* transaction type */
35 __int32_t th_tid; /* transaction id (unused) */
36 uint th_num_items; /* num items logged by trans */
37} xfs_trans_header_t;
38
39#define XFS_TRANS_HEADER_MAGIC 0x5452414e /* TRAN */
40
41/*
42 * Log item types.
43 */
Linus Torvalds1da177e2005-04-16 15:20:36 -070044#define XFS_LI_EFI 0x1236
45#define XFS_LI_EFD 0x1237
46#define XFS_LI_IUNLINK 0x1238
Linus Torvalds1da177e2005-04-16 15:20:36 -070047#define XFS_LI_INODE 0x123b /* aligned ino chunks, var-size ibufs */
48#define XFS_LI_BUF 0x123c /* v2 bufs, variable sized inode bufs */
49#define XFS_LI_DQUOT 0x123d
50#define XFS_LI_QUOTAOFF 0x123e
51
52/*
53 * Transaction types. Used to distinguish types of buffers.
54 */
55#define XFS_TRANS_SETATTR_NOT_SIZE 1
56#define XFS_TRANS_SETATTR_SIZE 2
57#define XFS_TRANS_INACTIVE 3
58#define XFS_TRANS_CREATE 4
59#define XFS_TRANS_CREATE_TRUNC 5
60#define XFS_TRANS_TRUNCATE_FILE 6
61#define XFS_TRANS_REMOVE 7
62#define XFS_TRANS_LINK 8
63#define XFS_TRANS_RENAME 9
64#define XFS_TRANS_MKDIR 10
65#define XFS_TRANS_RMDIR 11
66#define XFS_TRANS_SYMLINK 12
67#define XFS_TRANS_SET_DMATTRS 13
68#define XFS_TRANS_GROWFS 14
69#define XFS_TRANS_STRAT_WRITE 15
70#define XFS_TRANS_DIOSTRAT 16
Christoph Hellwig13e6d5c2009-08-31 21:00:31 -030071/* 17 was XFS_TRANS_WRITE_SYNC */
Linus Torvalds1da177e2005-04-16 15:20:36 -070072#define XFS_TRANS_WRITEID 18
73#define XFS_TRANS_ADDAFORK 19
74#define XFS_TRANS_ATTRINVAL 20
75#define XFS_TRANS_ATRUNCATE 21
76#define XFS_TRANS_ATTR_SET 22
77#define XFS_TRANS_ATTR_RM 23
78#define XFS_TRANS_ATTR_FLAG 24
79#define XFS_TRANS_CLEAR_AGI_BUCKET 25
80#define XFS_TRANS_QM_SBCHANGE 26
81/*
82 * Dummy entries since we use the transaction type to index into the
83 * trans_type[] in xlog_recover_print_trans_head()
84 */
85#define XFS_TRANS_DUMMY1 27
86#define XFS_TRANS_DUMMY2 28
87#define XFS_TRANS_QM_QUOTAOFF 29
88#define XFS_TRANS_QM_DQALLOC 30
89#define XFS_TRANS_QM_SETQLIM 31
90#define XFS_TRANS_QM_DQCLUSTER 32
91#define XFS_TRANS_QM_QINOCREATE 33
92#define XFS_TRANS_QM_QUOTAOFF_END 34
93#define XFS_TRANS_SB_UNIT 35
94#define XFS_TRANS_FSYNC_TS 36
95#define XFS_TRANS_GROWFSRT_ALLOC 37
96#define XFS_TRANS_GROWFSRT_ZERO 38
97#define XFS_TRANS_GROWFSRT_FREE 39
98#define XFS_TRANS_SWAPEXT 40
David Chinner92821e22007-05-24 15:26:31 +100099#define XFS_TRANS_SB_COUNT 41
100#define XFS_TRANS_TYPE_MAX 41
Linus Torvalds1da177e2005-04-16 15:20:36 -0700101/* new transaction types need to be reflected in xfs_logprint(8) */
102
Christoph Hellwig0b1b2132009-12-14 23:14:59 +0000103#define XFS_TRANS_TYPES \
104 { XFS_TRANS_SETATTR_NOT_SIZE, "SETATTR_NOT_SIZE" }, \
105 { XFS_TRANS_SETATTR_SIZE, "SETATTR_SIZE" }, \
106 { XFS_TRANS_INACTIVE, "INACTIVE" }, \
107 { XFS_TRANS_CREATE, "CREATE" }, \
108 { XFS_TRANS_CREATE_TRUNC, "CREATE_TRUNC" }, \
109 { XFS_TRANS_TRUNCATE_FILE, "TRUNCATE_FILE" }, \
110 { XFS_TRANS_REMOVE, "REMOVE" }, \
111 { XFS_TRANS_LINK, "LINK" }, \
112 { XFS_TRANS_RENAME, "RENAME" }, \
113 { XFS_TRANS_MKDIR, "MKDIR" }, \
114 { XFS_TRANS_RMDIR, "RMDIR" }, \
115 { XFS_TRANS_SYMLINK, "SYMLINK" }, \
116 { XFS_TRANS_SET_DMATTRS, "SET_DMATTRS" }, \
117 { XFS_TRANS_GROWFS, "GROWFS" }, \
118 { XFS_TRANS_STRAT_WRITE, "STRAT_WRITE" }, \
119 { XFS_TRANS_DIOSTRAT, "DIOSTRAT" }, \
120 { XFS_TRANS_WRITEID, "WRITEID" }, \
121 { XFS_TRANS_ADDAFORK, "ADDAFORK" }, \
122 { XFS_TRANS_ATTRINVAL, "ATTRINVAL" }, \
123 { XFS_TRANS_ATRUNCATE, "ATRUNCATE" }, \
124 { XFS_TRANS_ATTR_SET, "ATTR_SET" }, \
125 { XFS_TRANS_ATTR_RM, "ATTR_RM" }, \
126 { XFS_TRANS_ATTR_FLAG, "ATTR_FLAG" }, \
127 { XFS_TRANS_CLEAR_AGI_BUCKET, "CLEAR_AGI_BUCKET" }, \
128 { XFS_TRANS_QM_SBCHANGE, "QM_SBCHANGE" }, \
129 { XFS_TRANS_QM_QUOTAOFF, "QM_QUOTAOFF" }, \
130 { XFS_TRANS_QM_DQALLOC, "QM_DQALLOC" }, \
131 { XFS_TRANS_QM_SETQLIM, "QM_SETQLIM" }, \
132 { XFS_TRANS_QM_DQCLUSTER, "QM_DQCLUSTER" }, \
133 { XFS_TRANS_QM_QINOCREATE, "QM_QINOCREATE" }, \
134 { XFS_TRANS_QM_QUOTAOFF_END, "QM_QOFF_END" }, \
135 { XFS_TRANS_SB_UNIT, "SB_UNIT" }, \
136 { XFS_TRANS_FSYNC_TS, "FSYNC_TS" }, \
137 { XFS_TRANS_GROWFSRT_ALLOC, "GROWFSRT_ALLOC" }, \
138 { XFS_TRANS_GROWFSRT_ZERO, "GROWFSRT_ZERO" }, \
139 { XFS_TRANS_GROWFSRT_FREE, "GROWFSRT_FREE" }, \
140 { XFS_TRANS_SWAPEXT, "SWAPEXT" }, \
141 { XFS_TRANS_SB_COUNT, "SB_COUNT" }, \
142 { XFS_TRANS_DUMMY1, "DUMMY1" }, \
143 { XFS_TRANS_DUMMY2, "DUMMY2" }, \
144 { XLOG_UNMOUNT_REC_TYPE, "UNMOUNT" }
145
Linus Torvalds1da177e2005-04-16 15:20:36 -0700146/*
147 * This structure is used to track log items associated with
148 * a transaction. It points to the log item and keeps some
149 * flags to track the state of the log item. It also tracks
150 * the amount of space needed to log the item it describes
151 * once we get to commit processing (see xfs_trans_commit()).
152 */
153typedef struct xfs_log_item_desc {
Barry Naujok847fff52008-10-30 17:05:38 +1100154 struct xfs_log_item *lid_item;
Linus Torvalds1da177e2005-04-16 15:20:36 -0700155 ushort lid_size;
156 unsigned char lid_flags;
157 unsigned char lid_index;
158} xfs_log_item_desc_t;
159
160#define XFS_LID_DIRTY 0x1
161#define XFS_LID_PINNED 0x2
162#define XFS_LID_BUF_STALE 0x8
163
164/*
165 * This structure is used to maintain a chunk list of log_item_desc
166 * structures. The free field is a bitmask indicating which descriptors
167 * in this chunk's array are free. The unused field is the first value
168 * not used since this chunk was allocated.
169 */
170#define XFS_LIC_NUM_SLOTS 15
171typedef struct xfs_log_item_chunk {
172 struct xfs_log_item_chunk *lic_next;
173 ushort lic_free;
174 ushort lic_unused;
175 xfs_log_item_desc_t lic_descs[XFS_LIC_NUM_SLOTS];
176} xfs_log_item_chunk_t;
177
178#define XFS_LIC_MAX_SLOT (XFS_LIC_NUM_SLOTS - 1)
179#define XFS_LIC_FREEMASK ((1 << XFS_LIC_NUM_SLOTS) - 1)
180
181
182/*
183 * Initialize the given chunk. Set the chunk's free descriptor mask
184 * to indicate that all descriptors are free. The caller gets to set
185 * lic_unused to the right value (0 matches all free). The
186 * lic_descs.lid_index values are set up as each desc is allocated.
187 */
Nathan Scotta844f452005-11-02 14:38:42 +1100188static inline void xfs_lic_init(xfs_log_item_chunk_t *cp)
189{
190 cp->lic_free = XFS_LIC_FREEMASK;
191}
192
Nathan Scotta844f452005-11-02 14:38:42 +1100193static inline void xfs_lic_init_slot(xfs_log_item_chunk_t *cp, int slot)
194{
195 cp->lic_descs[slot].lid_index = (unsigned char)(slot);
196}
197
Nathan Scotta844f452005-11-02 14:38:42 +1100198static inline int xfs_lic_vacancy(xfs_log_item_chunk_t *cp)
199{
200 return cp->lic_free & XFS_LIC_FREEMASK;
201}
202
Nathan Scotta844f452005-11-02 14:38:42 +1100203static inline void xfs_lic_all_free(xfs_log_item_chunk_t *cp)
204{
205 cp->lic_free = XFS_LIC_FREEMASK;
206}
207
Nathan Scotta844f452005-11-02 14:38:42 +1100208static inline int xfs_lic_are_all_free(xfs_log_item_chunk_t *cp)
209{
210 return ((cp->lic_free & XFS_LIC_FREEMASK) == XFS_LIC_FREEMASK);
211}
212
Nathan Scotta844f452005-11-02 14:38:42 +1100213static inline int xfs_lic_isfree(xfs_log_item_chunk_t *cp, int slot)
214{
215 return (cp->lic_free & (1 << slot));
216}
217
Nathan Scotta844f452005-11-02 14:38:42 +1100218static inline void xfs_lic_claim(xfs_log_item_chunk_t *cp, int slot)
219{
220 cp->lic_free &= ~(1 << slot);
221}
222
Nathan Scotta844f452005-11-02 14:38:42 +1100223static inline void xfs_lic_relse(xfs_log_item_chunk_t *cp, int slot)
224{
225 cp->lic_free |= 1 << slot;
226}
227
Nathan Scotta844f452005-11-02 14:38:42 +1100228static inline xfs_log_item_desc_t *
229xfs_lic_slot(xfs_log_item_chunk_t *cp, int slot)
230{
231 return &(cp->lic_descs[slot]);
232}
233
Nathan Scotta844f452005-11-02 14:38:42 +1100234static inline int xfs_lic_desc_to_slot(xfs_log_item_desc_t *dp)
235{
236 return (uint)dp->lid_index;
237}
238
Linus Torvalds1da177e2005-04-16 15:20:36 -0700239/*
240 * Calculate the address of a chunk given a descriptor pointer:
241 * dp - dp->lid_index give the address of the start of the lic_descs array.
242 * From this we subtract the offset of the lic_descs field in a chunk.
243 * All of this yields the address of the chunk, which is
244 * cast to a chunk pointer.
245 */
Nathan Scotta844f452005-11-02 14:38:42 +1100246static inline xfs_log_item_chunk_t *
247xfs_lic_desc_to_chunk(xfs_log_item_desc_t *dp)
248{
249 return (xfs_log_item_chunk_t*) \
250 (((xfs_caddr_t)((dp) - (dp)->lid_index)) - \
251 (xfs_caddr_t)(((xfs_log_item_chunk_t*)0)->lic_descs));
252}
Linus Torvalds1da177e2005-04-16 15:20:36 -0700253
Linus Torvalds1da177e2005-04-16 15:20:36 -0700254#define XFS_TRANS_MAGIC 0x5452414E /* 'TRAN' */
255/*
256 * Values for t_flags.
257 */
258#define XFS_TRANS_DIRTY 0x01 /* something needs to be logged */
259#define XFS_TRANS_SB_DIRTY 0x02 /* superblock is modified */
260#define XFS_TRANS_PERM_LOG_RES 0x04 /* xact took a permanent log res */
261#define XFS_TRANS_SYNC 0x08 /* make commit synchronous */
262#define XFS_TRANS_DQ_DIRTY 0x10 /* at least one dquot in trx dirty */
263#define XFS_TRANS_RESERVE 0x20 /* OK to use reserved data blocks */
264
265/*
266 * Values for call flags parameter.
267 */
268#define XFS_TRANS_NOSLEEP 0x1
269#define XFS_TRANS_WAIT 0x2
270#define XFS_TRANS_RELEASE_LOG_RES 0x4
271#define XFS_TRANS_ABORT 0x8
272
273/*
274 * Field values for xfs_trans_mod_sb.
275 */
276#define XFS_TRANS_SB_ICOUNT 0x00000001
277#define XFS_TRANS_SB_IFREE 0x00000002
278#define XFS_TRANS_SB_FDBLOCKS 0x00000004
279#define XFS_TRANS_SB_RES_FDBLOCKS 0x00000008
280#define XFS_TRANS_SB_FREXTENTS 0x00000010
281#define XFS_TRANS_SB_RES_FREXTENTS 0x00000020
282#define XFS_TRANS_SB_DBLOCKS 0x00000040
283#define XFS_TRANS_SB_AGCOUNT 0x00000080
284#define XFS_TRANS_SB_IMAXPCT 0x00000100
285#define XFS_TRANS_SB_REXTSIZE 0x00000200
286#define XFS_TRANS_SB_RBMBLOCKS 0x00000400
287#define XFS_TRANS_SB_RBLOCKS 0x00000800
288#define XFS_TRANS_SB_REXTENTS 0x00001000
289#define XFS_TRANS_SB_REXTSLOG 0x00002000
290
291
292/*
293 * Various log reservation values.
294 * These are based on the size of the file system block
295 * because that is what most transactions manipulate.
296 * Each adds in an additional 128 bytes per item logged to
297 * try to account for the overhead of the transaction mechanism.
298 *
299 * Note:
300 * Most of the reservations underestimate the number of allocation
301 * groups into which they could free extents in the xfs_bmap_finish()
302 * call. This is because the number in the worst case is quite high
303 * and quite unusual. In order to fix this we need to change
304 * xfs_bmap_finish() to free extents in only a single AG at a time.
305 * This will require changes to the EFI code as well, however, so that
306 * the EFI for the extents not freed is logged again in each transaction.
307 * See bug 261917.
308 */
309
310/*
311 * Per-extent log reservation for the allocation btree changes
312 * involved in freeing or allocating an extent.
313 * 2 trees * (2 blocks/level * max depth - 1) * block size
314 */
315#define XFS_ALLOCFREE_LOG_RES(mp,nx) \
316 ((nx) * (2 * XFS_FSB_TO_B((mp), 2 * XFS_AG_MAXLEVELS(mp) - 1)))
317#define XFS_ALLOCFREE_LOG_COUNT(mp,nx) \
318 ((nx) * (2 * (2 * XFS_AG_MAXLEVELS(mp) - 1)))
319
320/*
321 * Per-directory log reservation for any directory change.
322 * dir blocks: (1 btree block per level + data block + free block) * dblock size
323 * bmap btree: (levels + 2) * max depth * block size
324 * v2 directory blocks can be fragmented below the dirblksize down to the fsb
325 * size, so account for that in the DAENTER macros.
326 */
327#define XFS_DIROP_LOG_RES(mp) \
328 (XFS_FSB_TO_B(mp, XFS_DAENTER_BLOCKS(mp, XFS_DATA_FORK)) + \
329 (XFS_FSB_TO_B(mp, XFS_DAENTER_BMAPS(mp, XFS_DATA_FORK) + 1)))
330#define XFS_DIROP_LOG_COUNT(mp) \
331 (XFS_DAENTER_BLOCKS(mp, XFS_DATA_FORK) + \
332 XFS_DAENTER_BMAPS(mp, XFS_DATA_FORK) + 1)
333
334/*
335 * In a write transaction we can allocate a maximum of 2
336 * extents. This gives:
337 * the inode getting the new extents: inode size
Malcolm Parsons9da096f2009-03-29 09:55:42 +0200338 * the inode's bmap btree: max depth * block size
Linus Torvalds1da177e2005-04-16 15:20:36 -0700339 * the agfs of the ags from which the extents are allocated: 2 * sector
340 * the superblock free block counter: sector size
341 * the allocation btrees: 2 exts * 2 trees * (2 * max depth - 1) * block size
342 * And the bmap_finish transaction can free bmap blocks in a join:
343 * the agfs of the ags containing the blocks: 2 * sector size
344 * the agfls of the ags containing the blocks: 2 * sector size
345 * the super block free block counter: sector size
346 * the allocation btrees: 2 exts * 2 trees * (2 * max depth - 1) * block size
347 */
348#define XFS_CALC_WRITE_LOG_RES(mp) \
349 (MAX( \
350 ((mp)->m_sb.sb_inodesize + \
351 XFS_FSB_TO_B((mp), XFS_BM_MAXLEVELS(mp, XFS_DATA_FORK)) + \
352 (2 * (mp)->m_sb.sb_sectsize) + \
353 (mp)->m_sb.sb_sectsize + \
354 XFS_ALLOCFREE_LOG_RES(mp, 2) + \
355 (128 * (4 + XFS_BM_MAXLEVELS(mp, XFS_DATA_FORK) + XFS_ALLOCFREE_LOG_COUNT(mp, 2)))),\
356 ((2 * (mp)->m_sb.sb_sectsize) + \
357 (2 * (mp)->m_sb.sb_sectsize) + \
358 (mp)->m_sb.sb_sectsize + \
359 XFS_ALLOCFREE_LOG_RES(mp, 2) + \
360 (128 * (5 + XFS_ALLOCFREE_LOG_COUNT(mp, 2))))))
361
362#define XFS_WRITE_LOG_RES(mp) ((mp)->m_reservations.tr_write)
363
364/*
365 * In truncating a file we free up to two extents at once. We can modify:
366 * the inode being truncated: inode size
Malcolm Parsons9da096f2009-03-29 09:55:42 +0200367 * the inode's bmap btree: (max depth + 1) * block size
Linus Torvalds1da177e2005-04-16 15:20:36 -0700368 * And the bmap_finish transaction can free the blocks and bmap blocks:
369 * the agf for each of the ags: 4 * sector size
370 * the agfl for each of the ags: 4 * sector size
371 * the super block to reflect the freed blocks: sector size
372 * worst case split in allocation btrees per extent assuming 4 extents:
373 * 4 exts * 2 trees * (2 * max depth - 1) * block size
374 * the inode btree: max depth * blocksize
375 * the allocation btrees: 2 trees * (max depth - 1) * block size
376 */
377#define XFS_CALC_ITRUNCATE_LOG_RES(mp) \
378 (MAX( \
379 ((mp)->m_sb.sb_inodesize + \
380 XFS_FSB_TO_B((mp), XFS_BM_MAXLEVELS(mp, XFS_DATA_FORK) + 1) + \
381 (128 * (2 + XFS_BM_MAXLEVELS(mp, XFS_DATA_FORK)))), \
382 ((4 * (mp)->m_sb.sb_sectsize) + \
383 (4 * (mp)->m_sb.sb_sectsize) + \
384 (mp)->m_sb.sb_sectsize + \
385 XFS_ALLOCFREE_LOG_RES(mp, 4) + \
386 (128 * (9 + XFS_ALLOCFREE_LOG_COUNT(mp, 4))) + \
387 (128 * 5) + \
388 XFS_ALLOCFREE_LOG_RES(mp, 1) + \
Christoph Hellwig0d87e652009-02-09 08:37:14 +0100389 (128 * (2 + XFS_IALLOC_BLOCKS(mp) + (mp)->m_in_maxlevels + \
Linus Torvalds1da177e2005-04-16 15:20:36 -0700390 XFS_ALLOCFREE_LOG_COUNT(mp, 1))))))
391
392#define XFS_ITRUNCATE_LOG_RES(mp) ((mp)->m_reservations.tr_itruncate)
393
394/*
395 * In renaming a files we can modify:
396 * the four inodes involved: 4 * inode size
397 * the two directory btrees: 2 * (max depth + v2) * dir block size
398 * the two directory bmap btrees: 2 * max depth * block size
399 * And the bmap_finish transaction can free dir and bmap blocks (two sets
400 * of bmap blocks) giving:
401 * the agf for the ags in which the blocks live: 3 * sector size
402 * the agfl for the ags in which the blocks live: 3 * sector size
403 * the superblock for the free block count: sector size
404 * the allocation btrees: 3 exts * 2 trees * (2 * max depth - 1) * block size
405 */
406#define XFS_CALC_RENAME_LOG_RES(mp) \
407 (MAX( \
408 ((4 * (mp)->m_sb.sb_inodesize) + \
409 (2 * XFS_DIROP_LOG_RES(mp)) + \
410 (128 * (4 + 2 * XFS_DIROP_LOG_COUNT(mp)))), \
411 ((3 * (mp)->m_sb.sb_sectsize) + \
412 (3 * (mp)->m_sb.sb_sectsize) + \
413 (mp)->m_sb.sb_sectsize + \
414 XFS_ALLOCFREE_LOG_RES(mp, 3) + \
415 (128 * (7 + XFS_ALLOCFREE_LOG_COUNT(mp, 3))))))
416
417#define XFS_RENAME_LOG_RES(mp) ((mp)->m_reservations.tr_rename)
418
419/*
420 * For creating a link to an inode:
421 * the parent directory inode: inode size
422 * the linked inode: inode size
423 * the directory btree could split: (max depth + v2) * dir block size
424 * the directory bmap btree could join or split: (max depth + v2) * blocksize
425 * And the bmap_finish transaction can free some bmap blocks giving:
426 * the agf for the ag in which the blocks live: sector size
427 * the agfl for the ag in which the blocks live: sector size
428 * the superblock for the free block count: sector size
429 * the allocation btrees: 2 trees * (2 * max depth - 1) * block size
430 */
431#define XFS_CALC_LINK_LOG_RES(mp) \
432 (MAX( \
433 ((mp)->m_sb.sb_inodesize + \
434 (mp)->m_sb.sb_inodesize + \
435 XFS_DIROP_LOG_RES(mp) + \
436 (128 * (2 + XFS_DIROP_LOG_COUNT(mp)))), \
437 ((mp)->m_sb.sb_sectsize + \
438 (mp)->m_sb.sb_sectsize + \
439 (mp)->m_sb.sb_sectsize + \
440 XFS_ALLOCFREE_LOG_RES(mp, 1) + \
441 (128 * (3 + XFS_ALLOCFREE_LOG_COUNT(mp, 1))))))
442
443#define XFS_LINK_LOG_RES(mp) ((mp)->m_reservations.tr_link)
444
445/*
446 * For removing a directory entry we can modify:
447 * the parent directory inode: inode size
448 * the removed inode: inode size
449 * the directory btree could join: (max depth + v2) * dir block size
450 * the directory bmap btree could join or split: (max depth + v2) * blocksize
451 * And the bmap_finish transaction can free the dir and bmap blocks giving:
452 * the agf for the ag in which the blocks live: 2 * sector size
453 * the agfl for the ag in which the blocks live: 2 * sector size
454 * the superblock for the free block count: sector size
455 * the allocation btrees: 2 exts * 2 trees * (2 * max depth - 1) * block size
456 */
457#define XFS_CALC_REMOVE_LOG_RES(mp) \
458 (MAX( \
459 ((mp)->m_sb.sb_inodesize + \
460 (mp)->m_sb.sb_inodesize + \
461 XFS_DIROP_LOG_RES(mp) + \
462 (128 * (2 + XFS_DIROP_LOG_COUNT(mp)))), \
463 ((2 * (mp)->m_sb.sb_sectsize) + \
464 (2 * (mp)->m_sb.sb_sectsize) + \
465 (mp)->m_sb.sb_sectsize + \
466 XFS_ALLOCFREE_LOG_RES(mp, 2) + \
467 (128 * (5 + XFS_ALLOCFREE_LOG_COUNT(mp, 2))))))
468
469#define XFS_REMOVE_LOG_RES(mp) ((mp)->m_reservations.tr_remove)
470
471/*
472 * For symlink we can modify:
473 * the parent directory inode: inode size
474 * the new inode: inode size
475 * the inode btree entry: 1 block
476 * the directory btree: (max depth + v2) * dir block size
Malcolm Parsons9da096f2009-03-29 09:55:42 +0200477 * the directory inode's bmap btree: (max depth + v2) * block size
478 * the blocks for the symlink: 1 kB
Linus Torvalds1da177e2005-04-16 15:20:36 -0700479 * Or in the first xact we allocate some inodes giving:
480 * the agi and agf of the ag getting the new inodes: 2 * sectorsize
481 * the inode blocks allocated: XFS_IALLOC_BLOCKS * blocksize
482 * the inode btree: max depth * blocksize
483 * the allocation btrees: 2 trees * (2 * max depth - 1) * block size
484 */
485#define XFS_CALC_SYMLINK_LOG_RES(mp) \
486 (MAX( \
487 ((mp)->m_sb.sb_inodesize + \
488 (mp)->m_sb.sb_inodesize + \
489 XFS_FSB_TO_B(mp, 1) + \
490 XFS_DIROP_LOG_RES(mp) + \
491 1024 + \
492 (128 * (4 + XFS_DIROP_LOG_COUNT(mp)))), \
493 (2 * (mp)->m_sb.sb_sectsize + \
494 XFS_FSB_TO_B((mp), XFS_IALLOC_BLOCKS((mp))) + \
Christoph Hellwig0d87e652009-02-09 08:37:14 +0100495 XFS_FSB_TO_B((mp), (mp)->m_in_maxlevels) + \
Linus Torvalds1da177e2005-04-16 15:20:36 -0700496 XFS_ALLOCFREE_LOG_RES(mp, 1) + \
Christoph Hellwig0d87e652009-02-09 08:37:14 +0100497 (128 * (2 + XFS_IALLOC_BLOCKS(mp) + (mp)->m_in_maxlevels + \
Linus Torvalds1da177e2005-04-16 15:20:36 -0700498 XFS_ALLOCFREE_LOG_COUNT(mp, 1))))))
499
500#define XFS_SYMLINK_LOG_RES(mp) ((mp)->m_reservations.tr_symlink)
501
502/*
503 * For create we can modify:
504 * the parent directory inode: inode size
505 * the new inode: inode size
506 * the inode btree entry: block size
507 * the superblock for the nlink flag: sector size
508 * the directory btree: (max depth + v2) * dir block size
Malcolm Parsons9da096f2009-03-29 09:55:42 +0200509 * the directory inode's bmap btree: (max depth + v2) * block size
Linus Torvalds1da177e2005-04-16 15:20:36 -0700510 * Or in the first xact we allocate some inodes giving:
511 * the agi and agf of the ag getting the new inodes: 2 * sectorsize
512 * the superblock for the nlink flag: sector size
513 * the inode blocks allocated: XFS_IALLOC_BLOCKS * blocksize
514 * the inode btree: max depth * blocksize
515 * the allocation btrees: 2 trees * (max depth - 1) * block size
516 */
517#define XFS_CALC_CREATE_LOG_RES(mp) \
518 (MAX( \
519 ((mp)->m_sb.sb_inodesize + \
520 (mp)->m_sb.sb_inodesize + \
521 (mp)->m_sb.sb_sectsize + \
522 XFS_FSB_TO_B(mp, 1) + \
523 XFS_DIROP_LOG_RES(mp) + \
524 (128 * (3 + XFS_DIROP_LOG_COUNT(mp)))), \
525 (3 * (mp)->m_sb.sb_sectsize + \
526 XFS_FSB_TO_B((mp), XFS_IALLOC_BLOCKS((mp))) + \
Christoph Hellwig0d87e652009-02-09 08:37:14 +0100527 XFS_FSB_TO_B((mp), (mp)->m_in_maxlevels) + \
Linus Torvalds1da177e2005-04-16 15:20:36 -0700528 XFS_ALLOCFREE_LOG_RES(mp, 1) + \
Christoph Hellwig0d87e652009-02-09 08:37:14 +0100529 (128 * (2 + XFS_IALLOC_BLOCKS(mp) + (mp)->m_in_maxlevels + \
Linus Torvalds1da177e2005-04-16 15:20:36 -0700530 XFS_ALLOCFREE_LOG_COUNT(mp, 1))))))
531
532#define XFS_CREATE_LOG_RES(mp) ((mp)->m_reservations.tr_create)
533
534/*
535 * Making a new directory is the same as creating a new file.
536 */
537#define XFS_CALC_MKDIR_LOG_RES(mp) XFS_CALC_CREATE_LOG_RES(mp)
538
539#define XFS_MKDIR_LOG_RES(mp) ((mp)->m_reservations.tr_mkdir)
540
541/*
542 * In freeing an inode we can modify:
543 * the inode being freed: inode size
544 * the super block free inode counter: sector size
545 * the agi hash list and counters: sector size
546 * the inode btree entry: block size
547 * the on disk inode before ours in the agi hash list: inode cluster size
548 * the inode btree: max depth * blocksize
549 * the allocation btrees: 2 trees * (max depth - 1) * block size
550 */
551#define XFS_CALC_IFREE_LOG_RES(mp) \
552 ((mp)->m_sb.sb_inodesize + \
553 (mp)->m_sb.sb_sectsize + \
554 (mp)->m_sb.sb_sectsize + \
555 XFS_FSB_TO_B((mp), 1) + \
556 MAX((__uint16_t)XFS_FSB_TO_B((mp), 1), XFS_INODE_CLUSTER_SIZE(mp)) + \
557 (128 * 5) + \
558 XFS_ALLOCFREE_LOG_RES(mp, 1) + \
Christoph Hellwig0d87e652009-02-09 08:37:14 +0100559 (128 * (2 + XFS_IALLOC_BLOCKS(mp) + (mp)->m_in_maxlevels + \
Linus Torvalds1da177e2005-04-16 15:20:36 -0700560 XFS_ALLOCFREE_LOG_COUNT(mp, 1))))
561
562
563#define XFS_IFREE_LOG_RES(mp) ((mp)->m_reservations.tr_ifree)
564
565/*
566 * When only changing the inode we log the inode and possibly the superblock
567 * We also add a bit of slop for the transaction stuff.
568 */
569#define XFS_CALC_ICHANGE_LOG_RES(mp) ((mp)->m_sb.sb_inodesize + \
570 (mp)->m_sb.sb_sectsize + 512)
571
572#define XFS_ICHANGE_LOG_RES(mp) ((mp)->m_reservations.tr_ichange)
573
574/*
575 * Growing the data section of the filesystem.
576 * superblock
577 * agi and agf
578 * allocation btrees
579 */
580#define XFS_CALC_GROWDATA_LOG_RES(mp) \
581 ((mp)->m_sb.sb_sectsize * 3 + \
582 XFS_ALLOCFREE_LOG_RES(mp, 1) + \
583 (128 * (3 + XFS_ALLOCFREE_LOG_COUNT(mp, 1))))
584
585#define XFS_GROWDATA_LOG_RES(mp) ((mp)->m_reservations.tr_growdata)
586
587/*
588 * Growing the rt section of the filesystem.
589 * In the first set of transactions (ALLOC) we allocate space to the
590 * bitmap or summary files.
591 * superblock: sector size
592 * agf of the ag from which the extent is allocated: sector size
593 * bmap btree for bitmap/summary inode: max depth * blocksize
594 * bitmap/summary inode: inode size
595 * allocation btrees for 1 block alloc: 2 * (2 * maxdepth - 1) * blocksize
596 */
597#define XFS_CALC_GROWRTALLOC_LOG_RES(mp) \
598 (2 * (mp)->m_sb.sb_sectsize + \
599 XFS_FSB_TO_B((mp), XFS_BM_MAXLEVELS(mp, XFS_DATA_FORK)) + \
600 (mp)->m_sb.sb_inodesize + \
601 XFS_ALLOCFREE_LOG_RES(mp, 1) + \
602 (128 * \
603 (3 + XFS_BM_MAXLEVELS(mp, XFS_DATA_FORK) + \
604 XFS_ALLOCFREE_LOG_COUNT(mp, 1))))
605
606#define XFS_GROWRTALLOC_LOG_RES(mp) ((mp)->m_reservations.tr_growrtalloc)
607
608/*
609 * Growing the rt section of the filesystem.
610 * In the second set of transactions (ZERO) we zero the new metadata blocks.
611 * one bitmap/summary block: blocksize
612 */
613#define XFS_CALC_GROWRTZERO_LOG_RES(mp) \
614 ((mp)->m_sb.sb_blocksize + 128)
615
616#define XFS_GROWRTZERO_LOG_RES(mp) ((mp)->m_reservations.tr_growrtzero)
617
618/*
619 * Growing the rt section of the filesystem.
620 * In the third set of transactions (FREE) we update metadata without
621 * allocating any new blocks.
622 * superblock: sector size
623 * bitmap inode: inode size
624 * summary inode: inode size
625 * one bitmap block: blocksize
626 * summary blocks: new summary size
627 */
628#define XFS_CALC_GROWRTFREE_LOG_RES(mp) \
629 ((mp)->m_sb.sb_sectsize + \
630 2 * (mp)->m_sb.sb_inodesize + \
631 (mp)->m_sb.sb_blocksize + \
632 (mp)->m_rsumsize + \
633 (128 * 5))
634
635#define XFS_GROWRTFREE_LOG_RES(mp) ((mp)->m_reservations.tr_growrtfree)
636
637/*
638 * Logging the inode modification timestamp on a synchronous write.
639 * inode
640 */
641#define XFS_CALC_SWRITE_LOG_RES(mp) \
642 ((mp)->m_sb.sb_inodesize + 128)
643
644#define XFS_SWRITE_LOG_RES(mp) ((mp)->m_reservations.tr_swrite)
645
646/*
647 * Logging the inode timestamps on an fsync -- same as SWRITE
648 * as long as SWRITE logs the entire inode core
649 */
650#define XFS_FSYNC_TS_LOG_RES(mp) ((mp)->m_reservations.tr_swrite)
651
652/*
653 * Logging the inode mode bits when writing a setuid/setgid file
654 * inode
655 */
656#define XFS_CALC_WRITEID_LOG_RES(mp) \
657 ((mp)->m_sb.sb_inodesize + 128)
658
659#define XFS_WRITEID_LOG_RES(mp) ((mp)->m_reservations.tr_swrite)
660
661/*
662 * Converting the inode from non-attributed to attributed.
663 * the inode being converted: inode size
664 * agf block and superblock (for block allocation)
665 * the new block (directory sized)
666 * bmap blocks for the new directory block
667 * allocation btrees
668 */
669#define XFS_CALC_ADDAFORK_LOG_RES(mp) \
670 ((mp)->m_sb.sb_inodesize + \
671 (mp)->m_sb.sb_sectsize * 2 + \
672 (mp)->m_dirblksize + \
Nathan Scottf6c2d1f2006-06-20 13:04:51 +1000673 XFS_FSB_TO_B(mp, (XFS_DAENTER_BMAP1B(mp, XFS_DATA_FORK) + 1)) + \
Linus Torvalds1da177e2005-04-16 15:20:36 -0700674 XFS_ALLOCFREE_LOG_RES(mp, 1) + \
Nathan Scottf6c2d1f2006-06-20 13:04:51 +1000675 (128 * (4 + (XFS_DAENTER_BMAP1B(mp, XFS_DATA_FORK) + 1) + \
Linus Torvalds1da177e2005-04-16 15:20:36 -0700676 XFS_ALLOCFREE_LOG_COUNT(mp, 1))))
677
678#define XFS_ADDAFORK_LOG_RES(mp) ((mp)->m_reservations.tr_addafork)
679
680/*
681 * Removing the attribute fork of a file
682 * the inode being truncated: inode size
Malcolm Parsons9da096f2009-03-29 09:55:42 +0200683 * the inode's bmap btree: max depth * block size
Linus Torvalds1da177e2005-04-16 15:20:36 -0700684 * And the bmap_finish transaction can free the blocks and bmap blocks:
685 * the agf for each of the ags: 4 * sector size
686 * the agfl for each of the ags: 4 * sector size
687 * the super block to reflect the freed blocks: sector size
688 * worst case split in allocation btrees per extent assuming 4 extents:
689 * 4 exts * 2 trees * (2 * max depth - 1) * block size
690 */
691#define XFS_CALC_ATTRINVAL_LOG_RES(mp) \
692 (MAX( \
693 ((mp)->m_sb.sb_inodesize + \
694 XFS_FSB_TO_B((mp), XFS_BM_MAXLEVELS(mp, XFS_ATTR_FORK)) + \
695 (128 * (1 + XFS_BM_MAXLEVELS(mp, XFS_ATTR_FORK)))), \
696 ((4 * (mp)->m_sb.sb_sectsize) + \
697 (4 * (mp)->m_sb.sb_sectsize) + \
698 (mp)->m_sb.sb_sectsize + \
699 XFS_ALLOCFREE_LOG_RES(mp, 4) + \
700 (128 * (9 + XFS_ALLOCFREE_LOG_COUNT(mp, 4))))))
701
702#define XFS_ATTRINVAL_LOG_RES(mp) ((mp)->m_reservations.tr_attrinval)
703
704/*
705 * Setting an attribute.
706 * the inode getting the attribute
707 * the superblock for allocations
708 * the agfs extents are allocated from
709 * the attribute btree * max depth
710 * the inode allocation btree
711 * Since attribute transaction space is dependent on the size of the attribute,
712 * the calculation is done partially at mount time and partially at runtime.
713 */
714#define XFS_CALC_ATTRSET_LOG_RES(mp) \
715 ((mp)->m_sb.sb_inodesize + \
716 (mp)->m_sb.sb_sectsize + \
717 XFS_FSB_TO_B((mp), XFS_DA_NODE_MAXDEPTH) + \
718 (128 * (2 + XFS_DA_NODE_MAXDEPTH)))
719
720#define XFS_ATTRSET_LOG_RES(mp, ext) \
721 ((mp)->m_reservations.tr_attrset + \
722 (ext * (mp)->m_sb.sb_sectsize) + \
723 (ext * XFS_FSB_TO_B((mp), XFS_BM_MAXLEVELS(mp, XFS_ATTR_FORK))) + \
724 (128 * (ext + (ext * XFS_BM_MAXLEVELS(mp, XFS_ATTR_FORK)))))
725
726/*
727 * Removing an attribute.
728 * the inode: inode size
729 * the attribute btree could join: max depth * block size
730 * the inode bmap btree could join or split: max depth * block size
731 * And the bmap_finish transaction can free the attr blocks freed giving:
732 * the agf for the ag in which the blocks live: 2 * sector size
733 * the agfl for the ag in which the blocks live: 2 * sector size
734 * the superblock for the free block count: sector size
735 * the allocation btrees: 2 exts * 2 trees * (2 * max depth - 1) * block size
736 */
737#define XFS_CALC_ATTRRM_LOG_RES(mp) \
738 (MAX( \
739 ((mp)->m_sb.sb_inodesize + \
740 XFS_FSB_TO_B((mp), XFS_DA_NODE_MAXDEPTH) + \
741 XFS_FSB_TO_B((mp), XFS_BM_MAXLEVELS(mp, XFS_ATTR_FORK)) + \
742 (128 * (1 + XFS_DA_NODE_MAXDEPTH + XFS_BM_MAXLEVELS(mp, XFS_DATA_FORK)))), \
743 ((2 * (mp)->m_sb.sb_sectsize) + \
744 (2 * (mp)->m_sb.sb_sectsize) + \
745 (mp)->m_sb.sb_sectsize + \
746 XFS_ALLOCFREE_LOG_RES(mp, 2) + \
747 (128 * (5 + XFS_ALLOCFREE_LOG_COUNT(mp, 2))))))
748
749#define XFS_ATTRRM_LOG_RES(mp) ((mp)->m_reservations.tr_attrrm)
750
751/*
752 * Clearing a bad agino number in an agi hash bucket.
753 */
754#define XFS_CALC_CLEAR_AGI_BUCKET_LOG_RES(mp) \
755 ((mp)->m_sb.sb_sectsize + 128)
756
757#define XFS_CLEAR_AGI_BUCKET_LOG_RES(mp) ((mp)->m_reservations.tr_clearagi)
758
759
760/*
761 * Various log count values.
762 */
763#define XFS_DEFAULT_LOG_COUNT 1
764#define XFS_DEFAULT_PERM_LOG_COUNT 2
765#define XFS_ITRUNCATE_LOG_COUNT 2
766#define XFS_INACTIVE_LOG_COUNT 2
767#define XFS_CREATE_LOG_COUNT 2
768#define XFS_MKDIR_LOG_COUNT 3
769#define XFS_SYMLINK_LOG_COUNT 3
770#define XFS_REMOVE_LOG_COUNT 2
771#define XFS_LINK_LOG_COUNT 2
772#define XFS_RENAME_LOG_COUNT 2
773#define XFS_WRITE_LOG_COUNT 2
774#define XFS_ADDAFORK_LOG_COUNT 2
775#define XFS_ATTRINVAL_LOG_COUNT 1
776#define XFS_ATTRSET_LOG_COUNT 3
777#define XFS_ATTRRM_LOG_COUNT 3
778
779/*
780 * Here we centralize the specification of XFS meta-data buffer
781 * reference count values. This determine how hard the buffer
782 * cache tries to hold onto the buffer.
783 */
784#define XFS_AGF_REF 4
785#define XFS_AGI_REF 4
786#define XFS_AGFL_REF 3
787#define XFS_INO_BTREE_REF 3
788#define XFS_ALLOC_BTREE_REF 2
789#define XFS_BMAP_BTREE_REF 2
790#define XFS_DIR_BTREE_REF 2
791#define XFS_ATTR_BTREE_REF 1
792#define XFS_INO_REF 1
793#define XFS_DQUOT_REF 1
794
795#ifdef __KERNEL__
Barry Naujok847fff52008-10-30 17:05:38 +1100796
797struct xfs_buf;
798struct xfs_buftarg;
799struct xfs_efd_log_item;
800struct xfs_efi_log_item;
801struct xfs_inode;
802struct xfs_item_ops;
803struct xfs_log_iovec;
804struct xfs_log_item_desc;
805struct xfs_mount;
806struct xfs_trans;
807struct xfs_dquot_acct;
808
809typedef struct xfs_log_item {
810 struct list_head li_ail; /* AIL pointers */
811 xfs_lsn_t li_lsn; /* last on-disk lsn */
812 struct xfs_log_item_desc *li_desc; /* ptr to current desc*/
813 struct xfs_mount *li_mountp; /* ptr to fs mount */
David Chinnerfc1829f2008-10-30 17:39:46 +1100814 struct xfs_ail *li_ailp; /* ptr to AIL */
Barry Naujok847fff52008-10-30 17:05:38 +1100815 uint li_type; /* item type */
816 uint li_flags; /* misc flags */
817 struct xfs_log_item *li_bio_list; /* buffer item list */
818 void (*li_cb)(struct xfs_buf *,
819 struct xfs_log_item *);
820 /* buffer item iodone */
821 /* callback func */
822 struct xfs_item_ops *li_ops; /* function list */
823} xfs_log_item_t;
824
825#define XFS_LI_IN_AIL 0x1
826#define XFS_LI_ABORTED 0x2
827
Christoph Hellwig0b1b2132009-12-14 23:14:59 +0000828#define XFS_LI_FLAGS \
829 { XFS_LI_IN_AIL, "IN_AIL" }, \
830 { XFS_LI_ABORTED, "ABORTED" }
831
Barry Naujok847fff52008-10-30 17:05:38 +1100832typedef struct xfs_item_ops {
833 uint (*iop_size)(xfs_log_item_t *);
834 void (*iop_format)(xfs_log_item_t *, struct xfs_log_iovec *);
835 void (*iop_pin)(xfs_log_item_t *);
836 void (*iop_unpin)(xfs_log_item_t *, int);
837 void (*iop_unpin_remove)(xfs_log_item_t *, struct xfs_trans *);
838 uint (*iop_trylock)(xfs_log_item_t *);
839 void (*iop_unlock)(xfs_log_item_t *);
840 xfs_lsn_t (*iop_committed)(xfs_log_item_t *, xfs_lsn_t);
841 void (*iop_push)(xfs_log_item_t *);
842 void (*iop_pushbuf)(xfs_log_item_t *);
843 void (*iop_committing)(xfs_log_item_t *, xfs_lsn_t);
844} xfs_item_ops_t;
845
846#define IOP_SIZE(ip) (*(ip)->li_ops->iop_size)(ip)
847#define IOP_FORMAT(ip,vp) (*(ip)->li_ops->iop_format)(ip, vp)
848#define IOP_PIN(ip) (*(ip)->li_ops->iop_pin)(ip)
849#define IOP_UNPIN(ip, flags) (*(ip)->li_ops->iop_unpin)(ip, flags)
850#define IOP_UNPIN_REMOVE(ip,tp) (*(ip)->li_ops->iop_unpin_remove)(ip, tp)
851#define IOP_TRYLOCK(ip) (*(ip)->li_ops->iop_trylock)(ip)
852#define IOP_UNLOCK(ip) (*(ip)->li_ops->iop_unlock)(ip)
853#define IOP_COMMITTED(ip, lsn) (*(ip)->li_ops->iop_committed)(ip, lsn)
854#define IOP_PUSH(ip) (*(ip)->li_ops->iop_push)(ip)
855#define IOP_PUSHBUF(ip) (*(ip)->li_ops->iop_pushbuf)(ip)
856#define IOP_COMMITTING(ip, lsn) (*(ip)->li_ops->iop_committing)(ip, lsn)
857
858/*
859 * Return values for the IOP_TRYLOCK() routines.
860 */
861#define XFS_ITEM_SUCCESS 0
862#define XFS_ITEM_PINNED 1
863#define XFS_ITEM_LOCKED 2
864#define XFS_ITEM_FLUSHING 3
865#define XFS_ITEM_PUSHBUF 4
866
867/*
868 * This structure is used to maintain a list of block ranges that have been
869 * freed in the transaction. The ranges are listed in the perag[] busy list
870 * between when they're freed and the transaction is committed to disk.
871 */
872
873typedef struct xfs_log_busy_slot {
874 xfs_agnumber_t lbc_ag;
875 ushort lbc_idx; /* index in perag.busy[] */
876} xfs_log_busy_slot_t;
877
878#define XFS_LBC_NUM_SLOTS 31
879typedef struct xfs_log_busy_chunk {
880 struct xfs_log_busy_chunk *lbc_next;
881 uint lbc_free; /* free slots bitmask */
882 ushort lbc_unused; /* first unused */
883 xfs_log_busy_slot_t lbc_busy[XFS_LBC_NUM_SLOTS];
884} xfs_log_busy_chunk_t;
885
886#define XFS_LBC_MAX_SLOT (XFS_LBC_NUM_SLOTS - 1)
887#define XFS_LBC_FREEMASK ((1U << XFS_LBC_NUM_SLOTS) - 1)
888
889#define XFS_LBC_INIT(cp) ((cp)->lbc_free = XFS_LBC_FREEMASK)
890#define XFS_LBC_CLAIM(cp, slot) ((cp)->lbc_free &= ~(1 << (slot)))
891#define XFS_LBC_SLOT(cp, slot) (&((cp)->lbc_busy[(slot)]))
892#define XFS_LBC_VACANCY(cp) (((cp)->lbc_free) & XFS_LBC_FREEMASK)
893#define XFS_LBC_ISFREE(cp, slot) ((cp)->lbc_free & (1 << (slot)))
894
895/*
896 * This is the type of function which can be given to xfs_trans_callback()
897 * to be called upon the transaction's commit to disk.
898 */
899typedef void (*xfs_trans_callback_t)(struct xfs_trans *, void *);
900
901/*
902 * This is the structure maintained for every active transaction.
903 */
904typedef struct xfs_trans {
905 unsigned int t_magic; /* magic number */
906 xfs_log_callback_t t_logcb; /* log callback struct */
907 unsigned int t_type; /* transaction type */
908 unsigned int t_log_res; /* amt of log space resvd */
909 unsigned int t_log_count; /* count for perm log res */
910 unsigned int t_blk_res; /* # of blocks resvd */
911 unsigned int t_blk_res_used; /* # of resvd blocks used */
912 unsigned int t_rtx_res; /* # of rt extents resvd */
913 unsigned int t_rtx_res_used; /* # of resvd rt extents used */
914 xfs_log_ticket_t t_ticket; /* log mgr ticket */
915 xfs_lsn_t t_lsn; /* log seq num of start of
916 * transaction. */
917 xfs_lsn_t t_commit_lsn; /* log seq num of end of
918 * transaction. */
919 struct xfs_mount *t_mountp; /* ptr to fs mount struct */
920 struct xfs_dquot_acct *t_dqinfo; /* acctg info for dquots */
921 xfs_trans_callback_t t_callback; /* transaction callback */
922 void *t_callarg; /* callback arg */
923 unsigned int t_flags; /* misc flags */
924 int64_t t_icount_delta; /* superblock icount change */
925 int64_t t_ifree_delta; /* superblock ifree change */
926 int64_t t_fdblocks_delta; /* superblock fdblocks chg */
927 int64_t t_res_fdblocks_delta; /* on-disk only chg */
928 int64_t t_frextents_delta;/* superblock freextents chg*/
929 int64_t t_res_frextents_delta; /* on-disk only chg */
930#ifdef DEBUG
931 int64_t t_ag_freeblks_delta; /* debugging counter */
932 int64_t t_ag_flist_delta; /* debugging counter */
933 int64_t t_ag_btree_delta; /* debugging counter */
934#endif
935 int64_t t_dblocks_delta;/* superblock dblocks change */
936 int64_t t_agcount_delta;/* superblock agcount change */
937 int64_t t_imaxpct_delta;/* superblock imaxpct change */
938 int64_t t_rextsize_delta;/* superblock rextsize chg */
939 int64_t t_rbmblocks_delta;/* superblock rbmblocks chg */
940 int64_t t_rblocks_delta;/* superblock rblocks change */
941 int64_t t_rextents_delta;/* superblocks rextents chg */
942 int64_t t_rextslog_delta;/* superblocks rextslog chg */
943 unsigned int t_items_free; /* log item descs free */
944 xfs_log_item_chunk_t t_items; /* first log item desc chunk */
945 xfs_trans_header_t t_header; /* header for in-log trans */
946 unsigned int t_busy_free; /* busy descs free */
947 xfs_log_busy_chunk_t t_busy; /* busy/async free blocks */
948 unsigned long t_pflags; /* saved process flags state */
949} xfs_trans_t;
950
Linus Torvalds1da177e2005-04-16 15:20:36 -0700951/*
952 * XFS transaction mechanism exported interfaces that are
953 * actually macros.
954 */
955#define xfs_trans_get_log_res(tp) ((tp)->t_log_res)
956#define xfs_trans_get_log_count(tp) ((tp)->t_log_count)
957#define xfs_trans_get_block_res(tp) ((tp)->t_blk_res)
958#define xfs_trans_set_sync(tp) ((tp)->t_flags |= XFS_TRANS_SYNC)
959
960#ifdef DEBUG
David Chinner20f4ebf2007-02-10 18:36:10 +1100961#define xfs_trans_agblocks_delta(tp, d) ((tp)->t_ag_freeblks_delta += (int64_t)d)
962#define xfs_trans_agflist_delta(tp, d) ((tp)->t_ag_flist_delta += (int64_t)d)
963#define xfs_trans_agbtree_delta(tp, d) ((tp)->t_ag_btree_delta += (int64_t)d)
Linus Torvalds1da177e2005-04-16 15:20:36 -0700964#else
965#define xfs_trans_agblocks_delta(tp, d)
966#define xfs_trans_agflist_delta(tp, d)
967#define xfs_trans_agbtree_delta(tp, d)
968#endif
969
970/*
971 * XFS transaction mechanism exported interfaces.
972 */
Linus Torvalds1da177e2005-04-16 15:20:36 -0700973xfs_trans_t *xfs_trans_alloc(struct xfs_mount *, uint);
Christoph Hellwig80641dc2009-10-19 04:00:03 +0000974xfs_trans_t *_xfs_trans_alloc(struct xfs_mount *, uint, uint);
Linus Torvalds1da177e2005-04-16 15:20:36 -0700975xfs_trans_t *xfs_trans_dup(xfs_trans_t *);
976int xfs_trans_reserve(xfs_trans_t *, uint, uint, uint,
977 uint, uint);
David Chinner20f4ebf2007-02-10 18:36:10 +1100978void xfs_trans_mod_sb(xfs_trans_t *, uint, int64_t);
Linus Torvalds1da177e2005-04-16 15:20:36 -0700979struct xfs_buf *xfs_trans_get_buf(xfs_trans_t *, struct xfs_buftarg *, xfs_daddr_t,
980 int, uint);
981int xfs_trans_read_buf(struct xfs_mount *, xfs_trans_t *,
982 struct xfs_buftarg *, xfs_daddr_t, int, uint,
983 struct xfs_buf **);
984struct xfs_buf *xfs_trans_getsb(xfs_trans_t *, struct xfs_mount *, int);
985
986void xfs_trans_brelse(xfs_trans_t *, struct xfs_buf *);
987void xfs_trans_bjoin(xfs_trans_t *, struct xfs_buf *);
988void xfs_trans_bhold(xfs_trans_t *, struct xfs_buf *);
Tim Shimminefa092f2005-09-05 08:29:01 +1000989void xfs_trans_bhold_release(xfs_trans_t *, struct xfs_buf *);
Linus Torvalds1da177e2005-04-16 15:20:36 -0700990void xfs_trans_binval(xfs_trans_t *, struct xfs_buf *);
991void xfs_trans_inode_buf(xfs_trans_t *, struct xfs_buf *);
Linus Torvalds1da177e2005-04-16 15:20:36 -0700992void xfs_trans_stale_inode_buf(xfs_trans_t *, struct xfs_buf *);
993void xfs_trans_dquot_buf(xfs_trans_t *, struct xfs_buf *, uint);
994void xfs_trans_inode_alloc_buf(xfs_trans_t *, struct xfs_buf *);
995int xfs_trans_iget(struct xfs_mount *, xfs_trans_t *,
996 xfs_ino_t , uint, uint, struct xfs_inode **);
997void xfs_trans_ijoin(xfs_trans_t *, struct xfs_inode *, uint);
998void xfs_trans_ihold(xfs_trans_t *, struct xfs_inode *);
Linus Torvalds1da177e2005-04-16 15:20:36 -0700999void xfs_trans_log_buf(xfs_trans_t *, struct xfs_buf *, uint, uint);
1000void xfs_trans_log_inode(xfs_trans_t *, struct xfs_inode *, uint);
1001struct xfs_efi_log_item *xfs_trans_get_efi(xfs_trans_t *, uint);
1002void xfs_efi_release(struct xfs_efi_log_item *, uint);
1003void xfs_trans_log_efi_extent(xfs_trans_t *,
1004 struct xfs_efi_log_item *,
1005 xfs_fsblock_t,
1006 xfs_extlen_t);
1007struct xfs_efd_log_item *xfs_trans_get_efd(xfs_trans_t *,
1008 struct xfs_efi_log_item *,
1009 uint);
1010void xfs_trans_log_efd_extent(xfs_trans_t *,
1011 struct xfs_efd_log_item *,
1012 xfs_fsblock_t,
1013 xfs_extlen_t);
Christoph Hellwigf538d4d2005-11-02 10:26:59 +11001014int _xfs_trans_commit(xfs_trans_t *,
1015 uint flags,
Christoph Hellwigf538d4d2005-11-02 10:26:59 +11001016 int *);
Eric Sandeen1c72bf92007-05-08 13:48:42 +10001017#define xfs_trans_commit(tp, flags) _xfs_trans_commit(tp, flags, NULL)
Linus Torvalds1da177e2005-04-16 15:20:36 -07001018void xfs_trans_cancel(xfs_trans_t *, int);
David Chinner249a8c12008-02-05 12:13:32 +11001019int xfs_trans_ail_init(struct xfs_mount *);
1020void xfs_trans_ail_destroy(struct xfs_mount *);
Linus Torvalds1da177e2005-04-16 15:20:36 -07001021xfs_log_busy_slot_t *xfs_trans_add_busy(xfs_trans_t *tp,
1022 xfs_agnumber_t ag,
1023 xfs_extlen_t idx);
1024
David Chinnera8272ce2007-11-23 16:28:09 +11001025extern kmem_zone_t *xfs_trans_zone;
1026
Linus Torvalds1da177e2005-04-16 15:20:36 -07001027#endif /* __KERNEL__ */
1028
Barry Naujok847fff52008-10-30 17:05:38 +11001029void xfs_trans_init(struct xfs_mount *);
1030int xfs_trans_roll(struct xfs_trans **, struct xfs_inode *);
1031
Linus Torvalds1da177e2005-04-16 15:20:36 -07001032#endif /* __XFS_TRANS_H__ */