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Merge branch 'rs485fix' of git://www.jni.nu/cris
[linux.git] / fs / xfs / xfs_trans.h
CommitLineData
1da177e4 1/*
7b718769
NS		 2 * Copyright (c) 2000-2002,2005 Silicon Graphics, Inc.
3 * All Rights Reserved.
1da177e4 4 *
7b718769
NS		 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
1da177e4
LT		 7 * published by the Free Software Foundation.
8 *
7b718769
NS		 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.
1da177e4 13 *
7b718769
NS		 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
1da177e4
LT		 17 */
18#ifndef __XFS_TRANS_H__
19#define __XFS_TRANS_H__
20
847fff5c
BN		 21struct xfs_log_item;
22
1da177e4
LT		 23/*
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 */
1da177e4
LT		 44#define XFS_LI_EFI 0x1236
45#define XFS_LI_EFD 0x1237
46#define XFS_LI_IUNLINK 0x1238
1da177e4
LT		 47#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
9abbc539
DC		 52#define XFS_LI_TYPE_DESC \
53 { XFS_LI_EFI, "XFS_LI_EFI" }, \
54 { XFS_LI_EFD, "XFS_LI_EFD" }, \
55 { XFS_LI_IUNLINK, "XFS_LI_IUNLINK" }, \
56 { XFS_LI_INODE, "XFS_LI_INODE" }, \
57 { XFS_LI_BUF, "XFS_LI_BUF" }, \
58 { XFS_LI_DQUOT, "XFS_LI_DQUOT" }, \
59 { XFS_LI_QUOTAOFF, "XFS_LI_QUOTAOFF" }
60
1da177e4
LT		 61/*
62 * Transaction types. Used to distinguish types of buffers.
63 */
64#define XFS_TRANS_SETATTR_NOT_SIZE 1
65#define XFS_TRANS_SETATTR_SIZE 2
66#define XFS_TRANS_INACTIVE 3
67#define XFS_TRANS_CREATE 4
68#define XFS_TRANS_CREATE_TRUNC 5
69#define XFS_TRANS_TRUNCATE_FILE 6
70#define XFS_TRANS_REMOVE 7
71#define XFS_TRANS_LINK 8
72#define XFS_TRANS_RENAME 9
73#define XFS_TRANS_MKDIR 10
74#define XFS_TRANS_RMDIR 11
75#define XFS_TRANS_SYMLINK 12
76#define XFS_TRANS_SET_DMATTRS 13
77#define XFS_TRANS_GROWFS 14
78#define XFS_TRANS_STRAT_WRITE 15
79#define XFS_TRANS_DIOSTRAT 16
13e6d5cd 80/* 17 was XFS_TRANS_WRITE_SYNC */
1da177e4
LT		 81#define XFS_TRANS_WRITEID 18
82#define XFS_TRANS_ADDAFORK 19
83#define XFS_TRANS_ATTRINVAL 20
84#define XFS_TRANS_ATRUNCATE 21
85#define XFS_TRANS_ATTR_SET 22
86#define XFS_TRANS_ATTR_RM 23
87#define XFS_TRANS_ATTR_FLAG 24
88#define XFS_TRANS_CLEAR_AGI_BUCKET 25
89#define XFS_TRANS_QM_SBCHANGE 26
90/*
91 * Dummy entries since we use the transaction type to index into the
92 * trans_type[] in xlog_recover_print_trans_head()
93 */
94#define XFS_TRANS_DUMMY1 27
95#define XFS_TRANS_DUMMY2 28
96#define XFS_TRANS_QM_QUOTAOFF 29
97#define XFS_TRANS_QM_DQALLOC 30
98#define XFS_TRANS_QM_SETQLIM 31
99#define XFS_TRANS_QM_DQCLUSTER 32
100#define XFS_TRANS_QM_QINOCREATE 33
101#define XFS_TRANS_QM_QUOTAOFF_END 34
102#define XFS_TRANS_SB_UNIT 35
103#define XFS_TRANS_FSYNC_TS 36
104#define XFS_TRANS_GROWFSRT_ALLOC 37
105#define XFS_TRANS_GROWFSRT_ZERO 38
106#define XFS_TRANS_GROWFSRT_FREE 39
107#define XFS_TRANS_SWAPEXT 40
92821e2b 108#define XFS_TRANS_SB_COUNT 41
71e330b5
DC		 109#define XFS_TRANS_CHECKPOINT 42
110#define XFS_TRANS_TYPE_MAX 42
1da177e4
LT		 111/* new transaction types need to be reflected in xfs_logprint(8) */
112
0b1b213f
CH		 113#define XFS_TRANS_TYPES \
114 { XFS_TRANS_SETATTR_NOT_SIZE, "SETATTR_NOT_SIZE" }, \
115 { XFS_TRANS_SETATTR_SIZE, "SETATTR_SIZE" }, \
116 { XFS_TRANS_INACTIVE, "INACTIVE" }, \
117 { XFS_TRANS_CREATE, "CREATE" }, \
118 { XFS_TRANS_CREATE_TRUNC, "CREATE_TRUNC" }, \
119 { XFS_TRANS_TRUNCATE_FILE, "TRUNCATE_FILE" }, \
120 { XFS_TRANS_REMOVE, "REMOVE" }, \
121 { XFS_TRANS_LINK, "LINK" }, \
122 { XFS_TRANS_RENAME, "RENAME" }, \
123 { XFS_TRANS_MKDIR, "MKDIR" }, \
124 { XFS_TRANS_RMDIR, "RMDIR" }, \
125 { XFS_TRANS_SYMLINK, "SYMLINK" }, \
126 { XFS_TRANS_SET_DMATTRS, "SET_DMATTRS" }, \
127 { XFS_TRANS_GROWFS, "GROWFS" }, \
128 { XFS_TRANS_STRAT_WRITE, "STRAT_WRITE" }, \
129 { XFS_TRANS_DIOSTRAT, "DIOSTRAT" }, \
130 { XFS_TRANS_WRITEID, "WRITEID" }, \
131 { XFS_TRANS_ADDAFORK, "ADDAFORK" }, \
132 { XFS_TRANS_ATTRINVAL, "ATTRINVAL" }, \
133 { XFS_TRANS_ATRUNCATE, "ATRUNCATE" }, \
134 { XFS_TRANS_ATTR_SET, "ATTR_SET" }, \
135 { XFS_TRANS_ATTR_RM, "ATTR_RM" }, \
136 { XFS_TRANS_ATTR_FLAG, "ATTR_FLAG" }, \
137 { XFS_TRANS_CLEAR_AGI_BUCKET, "CLEAR_AGI_BUCKET" }, \
138 { XFS_TRANS_QM_SBCHANGE, "QM_SBCHANGE" }, \
139 { XFS_TRANS_QM_QUOTAOFF, "QM_QUOTAOFF" }, \
140 { XFS_TRANS_QM_DQALLOC, "QM_DQALLOC" }, \
141 { XFS_TRANS_QM_SETQLIM, "QM_SETQLIM" }, \
142 { XFS_TRANS_QM_DQCLUSTER, "QM_DQCLUSTER" }, \
143 { XFS_TRANS_QM_QINOCREATE, "QM_QINOCREATE" }, \
144 { XFS_TRANS_QM_QUOTAOFF_END, "QM_QOFF_END" }, \
145 { XFS_TRANS_SB_UNIT, "SB_UNIT" }, \
146 { XFS_TRANS_FSYNC_TS, "FSYNC_TS" }, \
147 { XFS_TRANS_GROWFSRT_ALLOC, "GROWFSRT_ALLOC" }, \
148 { XFS_TRANS_GROWFSRT_ZERO, "GROWFSRT_ZERO" }, \
149 { XFS_TRANS_GROWFSRT_FREE, "GROWFSRT_FREE" }, \
150 { XFS_TRANS_SWAPEXT, "SWAPEXT" }, \
151 { XFS_TRANS_SB_COUNT, "SB_COUNT" }, \
71e330b5 152 { XFS_TRANS_CHECKPOINT, "CHECKPOINT" }, \
0b1b213f
CH		 153 { XFS_TRANS_DUMMY1, "DUMMY1" }, \
154 { XFS_TRANS_DUMMY2, "DUMMY2" }, \
155 { XLOG_UNMOUNT_REC_TYPE, "UNMOUNT" }
156
1da177e4
LT		 157/*
158 * This structure is used to track log items associated with
159 * a transaction. It points to the log item and keeps some
160 * flags to track the state of the log item. It also tracks
161 * the amount of space needed to log the item it describes
162 * once we get to commit processing (see xfs_trans_commit()).
163 */
e98c414f 164struct xfs_log_item_desc {
847fff5c 165 struct xfs_log_item *lid_item;
e98c414f
CH		 166 ushort lid_size;
167 unsigned char lid_flags;
168 struct list_head lid_trans;
169};
1da177e4
LT		 170
171#define XFS_LID_DIRTY 0x1
1da177e4 172
1da177e4
LT		 173#define XFS_TRANS_MAGIC 0x5452414E /* 'TRAN' */
174/*
175 * Values for t_flags.
176 */
177#define XFS_TRANS_DIRTY 0x01 /* something needs to be logged */
178#define XFS_TRANS_SB_DIRTY 0x02 /* superblock is modified */
179#define XFS_TRANS_PERM_LOG_RES 0x04 /* xact took a permanent log res */
180#define XFS_TRANS_SYNC 0x08 /* make commit synchronous */
181#define XFS_TRANS_DQ_DIRTY 0x10 /* at least one dquot in trx dirty */
182#define XFS_TRANS_RESERVE 0x20 /* OK to use reserved data blocks */
183
184/*
185 * Values for call flags parameter.
186 */
1da177e4
LT		 187#define XFS_TRANS_RELEASE_LOG_RES 0x4
188#define XFS_TRANS_ABORT 0x8
189
190/*
191 * Field values for xfs_trans_mod_sb.
192 */
193#define XFS_TRANS_SB_ICOUNT 0x00000001
194#define XFS_TRANS_SB_IFREE 0x00000002
195#define XFS_TRANS_SB_FDBLOCKS 0x00000004
196#define XFS_TRANS_SB_RES_FDBLOCKS 0x00000008
197#define XFS_TRANS_SB_FREXTENTS 0x00000010
198#define XFS_TRANS_SB_RES_FREXTENTS 0x00000020
199#define XFS_TRANS_SB_DBLOCKS 0x00000040
200#define XFS_TRANS_SB_AGCOUNT 0x00000080
201#define XFS_TRANS_SB_IMAXPCT 0x00000100
202#define XFS_TRANS_SB_REXTSIZE 0x00000200
203#define XFS_TRANS_SB_RBMBLOCKS 0x00000400
204#define XFS_TRANS_SB_RBLOCKS 0x00000800
205#define XFS_TRANS_SB_REXTENTS 0x00001000
206#define XFS_TRANS_SB_REXTSLOG 0x00002000
207
208
1da177e4
LT		 209/*
210 * Per-extent log reservation for the allocation btree changes
211 * involved in freeing or allocating an extent.
212 * 2 trees * (2 blocks/level * max depth - 1) * block size
213 */
214#define XFS_ALLOCFREE_LOG_RES(mp,nx) \
215 ((nx) * (2 * XFS_FSB_TO_B((mp), 2 * XFS_AG_MAXLEVELS(mp) - 1)))
216#define XFS_ALLOCFREE_LOG_COUNT(mp,nx) \
217 ((nx) * (2 * (2 * XFS_AG_MAXLEVELS(mp) - 1)))
218
219/*
220 * Per-directory log reservation for any directory change.
221 * dir blocks: (1 btree block per level + data block + free block) * dblock size
222 * bmap btree: (levels + 2) * max depth * block size
223 * v2 directory blocks can be fragmented below the dirblksize down to the fsb
224 * size, so account for that in the DAENTER macros.
225 */
226#define XFS_DIROP_LOG_RES(mp) \
227 (XFS_FSB_TO_B(mp, XFS_DAENTER_BLOCKS(mp, XFS_DATA_FORK)) + \
228 (XFS_FSB_TO_B(mp, XFS_DAENTER_BMAPS(mp, XFS_DATA_FORK) + 1)))
229#define XFS_DIROP_LOG_COUNT(mp) \
230 (XFS_DAENTER_BLOCKS(mp, XFS_DATA_FORK) + \
231 XFS_DAENTER_BMAPS(mp, XFS_DATA_FORK) + 1)
232
1da177e4
LT		 233
234#define XFS_WRITE_LOG_RES(mp) ((mp)->m_reservations.tr_write)
1da177e4 235#define XFS_ITRUNCATE_LOG_RES(mp) ((mp)->m_reservations.tr_itruncate)
1da177e4 236#define XFS_RENAME_LOG_RES(mp) ((mp)->m_reservations.tr_rename)
1da177e4 237#define XFS_LINK_LOG_RES(mp) ((mp)->m_reservations.tr_link)
1da177e4 238#define XFS_REMOVE_LOG_RES(mp) ((mp)->m_reservations.tr_remove)
1da177e4 239#define XFS_SYMLINK_LOG_RES(mp) ((mp)->m_reservations.tr_symlink)
1da177e4 240#define XFS_CREATE_LOG_RES(mp) ((mp)->m_reservations.tr_create)
1da177e4 241#define XFS_MKDIR_LOG_RES(mp) ((mp)->m_reservations.tr_mkdir)
1da177e4 242#define XFS_IFREE_LOG_RES(mp) ((mp)->m_reservations.tr_ifree)
1da177e4 243#define XFS_ICHANGE_LOG_RES(mp) ((mp)->m_reservations.tr_ichange)
1da177e4 244#define XFS_GROWDATA_LOG_RES(mp) ((mp)->m_reservations.tr_growdata)
1da177e4 245#define XFS_GROWRTALLOC_LOG_RES(mp) ((mp)->m_reservations.tr_growrtalloc)
1da177e4 246#define XFS_GROWRTZERO_LOG_RES(mp) ((mp)->m_reservations.tr_growrtzero)
1da177e4 247#define XFS_GROWRTFREE_LOG_RES(mp) ((mp)->m_reservations.tr_growrtfree)
1da177e4 248#define XFS_SWRITE_LOG_RES(mp) ((mp)->m_reservations.tr_swrite)
1da177e4
LT		 249/*
250 * Logging the inode timestamps on an fsync -- same as SWRITE
251 * as long as SWRITE logs the entire inode core
252 */
253#define XFS_FSYNC_TS_LOG_RES(mp) ((mp)->m_reservations.tr_swrite)
1da177e4 254#define XFS_WRITEID_LOG_RES(mp) ((mp)->m_reservations.tr_swrite)
1da177e4 255#define XFS_ADDAFORK_LOG_RES(mp) ((mp)->m_reservations.tr_addafork)
1da177e4 256#define XFS_ATTRINVAL_LOG_RES(mp) ((mp)->m_reservations.tr_attrinval)
1da177e4
LT		 257#define XFS_ATTRSET_LOG_RES(mp, ext) \
258 ((mp)->m_reservations.tr_attrset + \
259 (ext * (mp)->m_sb.sb_sectsize) + \
260 (ext * XFS_FSB_TO_B((mp), XFS_BM_MAXLEVELS(mp, XFS_ATTR_FORK))) + \
261 (128 * (ext + (ext * XFS_BM_MAXLEVELS(mp, XFS_ATTR_FORK)))))
1da177e4 262#define XFS_ATTRRM_LOG_RES(mp) ((mp)->m_reservations.tr_attrrm)
1da177e4
LT		 263#define XFS_CLEAR_AGI_BUCKET_LOG_RES(mp) ((mp)->m_reservations.tr_clearagi)
264
265
266/*
267 * Various log count values.
268 */
269#define XFS_DEFAULT_LOG_COUNT 1
270#define XFS_DEFAULT_PERM_LOG_COUNT 2
271#define XFS_ITRUNCATE_LOG_COUNT 2
272#define XFS_INACTIVE_LOG_COUNT 2
273#define XFS_CREATE_LOG_COUNT 2
274#define XFS_MKDIR_LOG_COUNT 3
275#define XFS_SYMLINK_LOG_COUNT 3
276#define XFS_REMOVE_LOG_COUNT 2
277#define XFS_LINK_LOG_COUNT 2
278#define XFS_RENAME_LOG_COUNT 2
279#define XFS_WRITE_LOG_COUNT 2
280#define XFS_ADDAFORK_LOG_COUNT 2
281#define XFS_ATTRINVAL_LOG_COUNT 1
282#define XFS_ATTRSET_LOG_COUNT 3
283#define XFS_ATTRRM_LOG_COUNT 3
284
285/*
286 * Here we centralize the specification of XFS meta-data buffer
287 * reference count values. This determine how hard the buffer
288 * cache tries to hold onto the buffer.
289 */
290#define XFS_AGF_REF 4
291#define XFS_AGI_REF 4
292#define XFS_AGFL_REF 3
293#define XFS_INO_BTREE_REF 3
294#define XFS_ALLOC_BTREE_REF 2
295#define XFS_BMAP_BTREE_REF 2
296#define XFS_DIR_BTREE_REF 2
297#define XFS_ATTR_BTREE_REF 1
298#define XFS_INO_REF 1
299#define XFS_DQUOT_REF 1
300
301#ifdef __KERNEL__
847fff5c
BN		 302
303struct xfs_buf;
304struct xfs_buftarg;
305struct xfs_efd_log_item;
306struct xfs_efi_log_item;
307struct xfs_inode;
308struct xfs_item_ops;
309struct xfs_log_iovec;
310struct xfs_log_item_desc;
311struct xfs_mount;
312struct xfs_trans;
313struct xfs_dquot_acct;
ed3b4d6c 314struct xfs_busy_extent;
847fff5c
BN		 315
316typedef struct xfs_log_item {
317 struct list_head li_ail; /* AIL pointers */
318 xfs_lsn_t li_lsn; /* last on-disk lsn */
319 struct xfs_log_item_desc *li_desc; /* ptr to current desc*/
320 struct xfs_mount *li_mountp; /* ptr to fs mount */
fc1829f3 321 struct xfs_ail *li_ailp; /* ptr to AIL */
847fff5c
BN		 322 uint li_type; /* item type */
323 uint li_flags; /* misc flags */
324 struct xfs_log_item *li_bio_list; /* buffer item list */
325 void (*li_cb)(struct xfs_buf *,
326 struct xfs_log_item *);
327 /* buffer item iodone */
328 /* callback func */
329 struct xfs_item_ops *li_ops; /* function list */
71e330b5
DC		 330
331 /* delayed logging */
332 struct list_head li_cil; /* CIL pointers */
333 struct xfs_log_vec *li_lv; /* active log vector */
ccf7c23f 334 xfs_lsn_t li_seq; /* CIL commit seq */
847fff5c
BN		 335} xfs_log_item_t;
336
337#define XFS_LI_IN_AIL 0x1
338#define XFS_LI_ABORTED 0x2
339
0b1b213f
CH		 340#define XFS_LI_FLAGS \
341 { XFS_LI_IN_AIL, "IN_AIL" }, \
342 { XFS_LI_ABORTED, "ABORTED" }
343
847fff5c
BN		 344typedef struct xfs_item_ops {
345 uint (*iop_size)(xfs_log_item_t *);
346 void (*iop_format)(xfs_log_item_t *, struct xfs_log_iovec *);
347 void (*iop_pin)(xfs_log_item_t *);
9412e318 348 void (*iop_unpin)(xfs_log_item_t *, int remove);
847fff5c
BN		 349 uint (*iop_trylock)(xfs_log_item_t *);
350 void (*iop_unlock)(xfs_log_item_t *);
351 xfs_lsn_t (*iop_committed)(xfs_log_item_t *, xfs_lsn_t);
352 void (*iop_push)(xfs_log_item_t *);
353 void (*iop_pushbuf)(xfs_log_item_t *);
354 void (*iop_committing)(xfs_log_item_t *, xfs_lsn_t);
355} xfs_item_ops_t;
356
357#define IOP_SIZE(ip) (*(ip)->li_ops->iop_size)(ip)
358#define IOP_FORMAT(ip,vp) (*(ip)->li_ops->iop_format)(ip, vp)
359#define IOP_PIN(ip) (*(ip)->li_ops->iop_pin)(ip)
9412e318 360#define IOP_UNPIN(ip, remove) (*(ip)->li_ops->iop_unpin)(ip, remove)
847fff5c
BN		 361#define IOP_TRYLOCK(ip) (*(ip)->li_ops->iop_trylock)(ip)
362#define IOP_UNLOCK(ip) (*(ip)->li_ops->iop_unlock)(ip)
363#define IOP_COMMITTED(ip, lsn) (*(ip)->li_ops->iop_committed)(ip, lsn)
364#define IOP_PUSH(ip) (*(ip)->li_ops->iop_push)(ip)
365#define IOP_PUSHBUF(ip) (*(ip)->li_ops->iop_pushbuf)(ip)
366#define IOP_COMMITTING(ip, lsn) (*(ip)->li_ops->iop_committing)(ip, lsn)
367
368/*
369 * Return values for the IOP_TRYLOCK() routines.
370 */
371#define XFS_ITEM_SUCCESS 0
372#define XFS_ITEM_PINNED 1
373#define XFS_ITEM_LOCKED 2
d808f617 374#define XFS_ITEM_PUSHBUF 3
847fff5c 375
847fff5c
BN		 376/*
377 * This is the type of function which can be given to xfs_trans_callback()
378 * to be called upon the transaction's commit to disk.
379 */
380typedef void (*xfs_trans_callback_t)(struct xfs_trans *, void *);
381
382/*
383 * This is the structure maintained for every active transaction.
384 */
385typedef struct xfs_trans {
386 unsigned int t_magic; /* magic number */
387 xfs_log_callback_t t_logcb; /* log callback struct */
388 unsigned int t_type; /* transaction type */
389 unsigned int t_log_res; /* amt of log space resvd */
390 unsigned int t_log_count; /* count for perm log res */
391 unsigned int t_blk_res; /* # of blocks resvd */
392 unsigned int t_blk_res_used; /* # of resvd blocks used */
393 unsigned int t_rtx_res; /* # of rt extents resvd */
394 unsigned int t_rtx_res_used; /* # of resvd rt extents used */
35a8a72f 395 struct xlog_ticket *t_ticket; /* log mgr ticket */
847fff5c
BN		 396 xfs_lsn_t t_lsn; /* log seq num of start of
397 * transaction. */
398 xfs_lsn_t t_commit_lsn; /* log seq num of end of
399 * transaction. */
400 struct xfs_mount *t_mountp; /* ptr to fs mount struct */
401 struct xfs_dquot_acct *t_dqinfo; /* acctg info for dquots */
402 xfs_trans_callback_t t_callback; /* transaction callback */
403 void *t_callarg; /* callback arg */
404 unsigned int t_flags; /* misc flags */
405 int64_t t_icount_delta; /* superblock icount change */
406 int64_t t_ifree_delta; /* superblock ifree change */
407 int64_t t_fdblocks_delta; /* superblock fdblocks chg */
408 int64_t t_res_fdblocks_delta; /* on-disk only chg */
409 int64_t t_frextents_delta;/* superblock freextents chg*/
410 int64_t t_res_frextents_delta; /* on-disk only chg */
411#ifdef DEBUG
412 int64_t t_ag_freeblks_delta; /* debugging counter */
413 int64_t t_ag_flist_delta; /* debugging counter */
414 int64_t t_ag_btree_delta; /* debugging counter */
415#endif
416 int64_t t_dblocks_delta;/* superblock dblocks change */
417 int64_t t_agcount_delta;/* superblock agcount change */
418 int64_t t_imaxpct_delta;/* superblock imaxpct change */
419 int64_t t_rextsize_delta;/* superblock rextsize chg */
420 int64_t t_rbmblocks_delta;/* superblock rbmblocks chg */
421 int64_t t_rblocks_delta;/* superblock rblocks change */
422 int64_t t_rextents_delta;/* superblocks rextents chg */
423 int64_t t_rextslog_delta;/* superblocks rextslog chg */
e98c414f 424 struct list_head t_items; /* log item descriptors */
847fff5c 425 xfs_trans_header_t t_header; /* header for in-log trans */
ed3b4d6c 426 struct list_head t_busy; /* list of busy extents */
847fff5c
BN		 427 unsigned long t_pflags; /* saved process flags state */
428} xfs_trans_t;
429
1da177e4
LT		 430/*
431 * XFS transaction mechanism exported interfaces that are
432 * actually macros.
433 */
434#define xfs_trans_get_log_res(tp) ((tp)->t_log_res)
435#define xfs_trans_get_log_count(tp) ((tp)->t_log_count)
436#define xfs_trans_get_block_res(tp) ((tp)->t_blk_res)
437#define xfs_trans_set_sync(tp) ((tp)->t_flags |= XFS_TRANS_SYNC)
438
439#ifdef DEBUG
20f4ebf2
DC		 440#define xfs_trans_agblocks_delta(tp, d) ((tp)->t_ag_freeblks_delta += (int64_t)d)
441#define xfs_trans_agflist_delta(tp, d) ((tp)->t_ag_flist_delta += (int64_t)d)
442#define xfs_trans_agbtree_delta(tp, d) ((tp)->t_ag_btree_delta += (int64_t)d)
1da177e4
LT		 443#else
444#define xfs_trans_agblocks_delta(tp, d)
445#define xfs_trans_agflist_delta(tp, d)
446#define xfs_trans_agbtree_delta(tp, d)
447#endif
448
449/*
450 * XFS transaction mechanism exported interfaces.
451 */
1da177e4 452xfs_trans_t *xfs_trans_alloc(struct xfs_mount *, uint);
80641dc6 453xfs_trans_t *_xfs_trans_alloc(struct xfs_mount *, uint, uint);
1da177e4
LT		 454xfs_trans_t *xfs_trans_dup(xfs_trans_t *);
455int xfs_trans_reserve(xfs_trans_t *, uint, uint, uint,
456 uint, uint);
20f4ebf2 457void xfs_trans_mod_sb(xfs_trans_t *, uint, int64_t);
1da177e4
LT		 458struct xfs_buf *xfs_trans_get_buf(xfs_trans_t *, struct xfs_buftarg *, xfs_daddr_t,
459 int, uint);
460int xfs_trans_read_buf(struct xfs_mount *, xfs_trans_t *,
461 struct xfs_buftarg *, xfs_daddr_t, int, uint,
462 struct xfs_buf **);
463struct xfs_buf *xfs_trans_getsb(xfs_trans_t *, struct xfs_mount *, int);
464
465void xfs_trans_brelse(xfs_trans_t *, struct xfs_buf *);
466void xfs_trans_bjoin(xfs_trans_t *, struct xfs_buf *);
467void xfs_trans_bhold(xfs_trans_t *, struct xfs_buf *);
efa092f3 468void xfs_trans_bhold_release(xfs_trans_t *, struct xfs_buf *);
1da177e4
LT		 469void xfs_trans_binval(xfs_trans_t *, struct xfs_buf *);
470void xfs_trans_inode_buf(xfs_trans_t *, struct xfs_buf *);
1da177e4
LT		 471void xfs_trans_stale_inode_buf(xfs_trans_t *, struct xfs_buf *);
472void xfs_trans_dquot_buf(xfs_trans_t *, struct xfs_buf *, uint);
473void xfs_trans_inode_alloc_buf(xfs_trans_t *, struct xfs_buf *);
474int xfs_trans_iget(struct xfs_mount *, xfs_trans_t *,
475 xfs_ino_t , uint, uint, struct xfs_inode **);
898621d5
CH		 476void xfs_trans_ijoin_ref(struct xfs_trans *, struct xfs_inode *, uint);
477void xfs_trans_ijoin(struct xfs_trans *, struct xfs_inode *);
1da177e4
LT		 478void xfs_trans_log_buf(xfs_trans_t *, struct xfs_buf *, uint, uint);
479void xfs_trans_log_inode(xfs_trans_t *, struct xfs_inode *, uint);
480struct xfs_efi_log_item *xfs_trans_get_efi(xfs_trans_t *, uint);
481void xfs_efi_release(struct xfs_efi_log_item *, uint);
482void xfs_trans_log_efi_extent(xfs_trans_t *,
483 struct xfs_efi_log_item *,
484 xfs_fsblock_t,
485 xfs_extlen_t);
486struct xfs_efd_log_item *xfs_trans_get_efd(xfs_trans_t *,
487 struct xfs_efi_log_item *,
488 uint);
489void xfs_trans_log_efd_extent(xfs_trans_t *,
490 struct xfs_efd_log_item *,
491 xfs_fsblock_t,
492 xfs_extlen_t);
f538d4da
CH		 493int _xfs_trans_commit(xfs_trans_t *,
494 uint flags,
f538d4da 495 int *);
1c72bf90 496#define xfs_trans_commit(tp, flags) _xfs_trans_commit(tp, flags, NULL)
1da177e4 497void xfs_trans_cancel(xfs_trans_t *, int);
249a8c11
DC		 498int xfs_trans_ail_init(struct xfs_mount *);
499void xfs_trans_ail_destroy(struct xfs_mount *);
1da177e4 500
a8272ce0 501extern kmem_zone_t *xfs_trans_zone;
e98c414f 502extern kmem_zone_t *xfs_log_item_desc_zone;
a8272ce0 503
1da177e4
LT		 504#endif /* __KERNEL__ */
505
847fff5c
BN		 506void xfs_trans_init(struct xfs_mount *);
507int xfs_trans_roll(struct xfs_trans **, struct xfs_inode *);
508
1da177e4 509#endif /* __XFS_TRANS_H__ */
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