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 struct xfs_log_item; 22 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 */ 32 typedef 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 */ 44 #define XFS_LI_EFI 0x1236 45 #define XFS_LI_EFD 0x1237 46 #define XFS_LI_IUNLINK 0x1238 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 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 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 80 /* 17 was XFS_TRANS_WRITE_SYNC */ 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 40 108 #define XFS_TRANS_SB_COUNT 41 109 #define XFS_TRANS_CHECKPOINT 42 110 #define XFS_TRANS_TYPE_MAX 42 111 /* new transaction types need to be reflected in xfs_logprint(8) */ 112 113 #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" }, \ 152 { XFS_TRANS_CHECKPOINT, "CHECKPOINT" }, \ 153 { XFS_TRANS_DUMMY1, "DUMMY1" }, \ 154 { XFS_TRANS_DUMMY2, "DUMMY2" }, \ 155 { XLOG_UNMOUNT_REC_TYPE, "UNMOUNT" } 156 157 /* 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 */ 164 struct xfs_log_item_desc { 165 struct xfs_log_item *lid_item; 166 struct list_head lid_trans; 167 unsigned char lid_flags; 168 }; 169 170 #define XFS_LID_DIRTY 0x1 171 172 #define XFS_TRANS_MAGIC 0x5452414E /* 'TRAN' */ 173 /* 174 * Values for t_flags. 175 */ 176 #define XFS_TRANS_DIRTY 0x01 /* something needs to be logged */ 177 #define XFS_TRANS_SB_DIRTY 0x02 /* superblock is modified */ 178 #define XFS_TRANS_PERM_LOG_RES 0x04 /* xact took a permanent log res */ 179 #define XFS_TRANS_SYNC 0x08 /* make commit synchronous */ 180 #define XFS_TRANS_DQ_DIRTY 0x10 /* at least one dquot in trx dirty */ 181 #define XFS_TRANS_RESERVE 0x20 /* OK to use reserved data blocks */ 182 #define XFS_TRANS_FREEZE_PROT 0x40 /* Transaction has elevated writer 183 count in superblock */ 184 185 /* 186 * Values for call flags parameter. 187 */ 188 #define XFS_TRANS_RELEASE_LOG_RES 0x4 189 #define XFS_TRANS_ABORT 0x8 190 191 /* 192 * Field values for xfs_trans_mod_sb. 193 */ 194 #define XFS_TRANS_SB_ICOUNT 0x00000001 195 #define XFS_TRANS_SB_IFREE 0x00000002 196 #define XFS_TRANS_SB_FDBLOCKS 0x00000004 197 #define XFS_TRANS_SB_RES_FDBLOCKS 0x00000008 198 #define XFS_TRANS_SB_FREXTENTS 0x00000010 199 #define XFS_TRANS_SB_RES_FREXTENTS 0x00000020 200 #define XFS_TRANS_SB_DBLOCKS 0x00000040 201 #define XFS_TRANS_SB_AGCOUNT 0x00000080 202 #define XFS_TRANS_SB_IMAXPCT 0x00000100 203 #define XFS_TRANS_SB_REXTSIZE 0x00000200 204 #define XFS_TRANS_SB_RBMBLOCKS 0x00000400 205 #define XFS_TRANS_SB_RBLOCKS 0x00000800 206 #define XFS_TRANS_SB_REXTENTS 0x00001000 207 #define XFS_TRANS_SB_REXTSLOG 0x00002000 208 209 210 /* 211 * Per-extent log reservation for the allocation btree changes 212 * involved in freeing or allocating an extent. 213 * 2 trees * (2 blocks/level * max depth - 1) * block size 214 */ 215 #define XFS_ALLOCFREE_LOG_RES(mp,nx) \ 216 ((nx) * (2 * XFS_FSB_TO_B((mp), 2 * XFS_AG_MAXLEVELS(mp) - 1))) 217 #define XFS_ALLOCFREE_LOG_COUNT(mp,nx) \ 218 ((nx) * (2 * (2 * XFS_AG_MAXLEVELS(mp) - 1))) 219 220 /* 221 * Per-directory log reservation for any directory change. 222 * dir blocks: (1 btree block per level + data block + free block) * dblock size 223 * bmap btree: (levels + 2) * max depth * block size 224 * v2 directory blocks can be fragmented below the dirblksize down to the fsb 225 * size, so account for that in the DAENTER macros. 226 */ 227 #define XFS_DIROP_LOG_RES(mp) \ 228 (XFS_FSB_TO_B(mp, XFS_DAENTER_BLOCKS(mp, XFS_DATA_FORK)) + \ 229 (XFS_FSB_TO_B(mp, XFS_DAENTER_BMAPS(mp, XFS_DATA_FORK) + 1))) 230 #define XFS_DIROP_LOG_COUNT(mp) \ 231 (XFS_DAENTER_BLOCKS(mp, XFS_DATA_FORK) + \ 232 XFS_DAENTER_BMAPS(mp, XFS_DATA_FORK) + 1) 233 234 235 #define XFS_WRITE_LOG_RES(mp) ((mp)->m_reservations.tr_write) 236 #define XFS_ITRUNCATE_LOG_RES(mp) ((mp)->m_reservations.tr_itruncate) 237 #define XFS_RENAME_LOG_RES(mp) ((mp)->m_reservations.tr_rename) 238 #define XFS_LINK_LOG_RES(mp) ((mp)->m_reservations.tr_link) 239 #define XFS_REMOVE_LOG_RES(mp) ((mp)->m_reservations.tr_remove) 240 #define XFS_SYMLINK_LOG_RES(mp) ((mp)->m_reservations.tr_symlink) 241 #define XFS_CREATE_LOG_RES(mp) ((mp)->m_reservations.tr_create) 242 #define XFS_MKDIR_LOG_RES(mp) ((mp)->m_reservations.tr_mkdir) 243 #define XFS_IFREE_LOG_RES(mp) ((mp)->m_reservations.tr_ifree) 244 #define XFS_ICHANGE_LOG_RES(mp) ((mp)->m_reservations.tr_ichange) 245 #define XFS_GROWDATA_LOG_RES(mp) ((mp)->m_reservations.tr_growdata) 246 #define XFS_GROWRTALLOC_LOG_RES(mp) ((mp)->m_reservations.tr_growrtalloc) 247 #define XFS_GROWRTZERO_LOG_RES(mp) ((mp)->m_reservations.tr_growrtzero) 248 #define XFS_GROWRTFREE_LOG_RES(mp) ((mp)->m_reservations.tr_growrtfree) 249 #define XFS_SWRITE_LOG_RES(mp) ((mp)->m_reservations.tr_swrite) 250 /* 251 * Logging the inode timestamps on an fsync -- same as SWRITE 252 * as long as SWRITE logs the entire inode core 253 */ 254 #define XFS_FSYNC_TS_LOG_RES(mp) ((mp)->m_reservations.tr_swrite) 255 #define XFS_WRITEID_LOG_RES(mp) ((mp)->m_reservations.tr_swrite) 256 #define XFS_ADDAFORK_LOG_RES(mp) ((mp)->m_reservations.tr_addafork) 257 #define XFS_ATTRINVAL_LOG_RES(mp) ((mp)->m_reservations.tr_attrinval) 258 #define XFS_ATTRSETM_LOG_RES(mp) ((mp)->m_reservations.tr_attrsetm) 259 #define XFS_ATTRSETRT_LOG_RES(mp) ((mp)->m_reservations.tr_attrsetrt) 260 #define XFS_ATTRRM_LOG_RES(mp) ((mp)->m_reservations.tr_attrrm) 261 #define XFS_CLEAR_AGI_BUCKET_LOG_RES(mp) ((mp)->m_reservations.tr_clearagi) 262 #define XFS_QM_SBCHANGE_LOG_RES(mp) ((mp)->m_reservations.tr_qm_sbchange) 263 #define XFS_QM_SETQLIM_LOG_RES(mp) ((mp)->m_reservations.tr_qm_setqlim) 264 #define XFS_QM_DQALLOC_LOG_RES(mp) ((mp)->m_reservations.tr_qm_dqalloc) 265 #define XFS_QM_QUOTAOFF_LOG_RES(mp) ((mp)->m_reservations.tr_qm_quotaoff) 266 #define XFS_QM_QUOTAOFF_END_LOG_RES(mp) ((mp)->m_reservations.tr_qm_equotaoff) 267 #define XFS_SB_LOG_RES(mp) ((mp)->m_reservations.tr_sb) 268 269 /* 270 * Various log count values. 271 */ 272 #define XFS_DEFAULT_LOG_COUNT 1 273 #define XFS_DEFAULT_PERM_LOG_COUNT 2 274 #define XFS_ITRUNCATE_LOG_COUNT 2 275 #define XFS_INACTIVE_LOG_COUNT 2 276 #define XFS_CREATE_LOG_COUNT 2 277 #define XFS_MKDIR_LOG_COUNT 3 278 #define XFS_SYMLINK_LOG_COUNT 3 279 #define XFS_REMOVE_LOG_COUNT 2 280 #define XFS_LINK_LOG_COUNT 2 281 #define XFS_RENAME_LOG_COUNT 2 282 #define XFS_WRITE_LOG_COUNT 2 283 #define XFS_ADDAFORK_LOG_COUNT 2 284 #define XFS_ATTRINVAL_LOG_COUNT 1 285 #define XFS_ATTRSET_LOG_COUNT 3 286 #define XFS_ATTRRM_LOG_COUNT 3 287 288 /* 289 * Here we centralize the specification of XFS meta-data buffer 290 * reference count values. This determine how hard the buffer 291 * cache tries to hold onto the buffer. 292 */ 293 #define XFS_AGF_REF 4 294 #define XFS_AGI_REF 4 295 #define XFS_AGFL_REF 3 296 #define XFS_INO_BTREE_REF 3 297 #define XFS_ALLOC_BTREE_REF 2 298 #define XFS_BMAP_BTREE_REF 2 299 #define XFS_DIR_BTREE_REF 2 300 #define XFS_INO_REF 2 301 #define XFS_ATTR_BTREE_REF 1 302 #define XFS_DQUOT_REF 1 303 304 #ifdef __KERNEL__ 305 306 struct xfs_buf; 307 struct xfs_buftarg; 308 struct xfs_efd_log_item; 309 struct xfs_efi_log_item; 310 struct xfs_inode; 311 struct xfs_item_ops; 312 struct xfs_log_iovec; 313 struct xfs_log_item_desc; 314 struct xfs_mount; 315 struct xfs_trans; 316 struct xfs_dquot_acct; 317 struct xfs_busy_extent; 318 319 typedef struct xfs_log_item { 320 struct list_head li_ail; /* AIL pointers */ 321 xfs_lsn_t li_lsn; /* last on-disk lsn */ 322 struct xfs_log_item_desc *li_desc; /* ptr to current desc*/ 323 struct xfs_mount *li_mountp; /* ptr to fs mount */ 324 struct xfs_ail *li_ailp; /* ptr to AIL */ 325 uint li_type; /* item type */ 326 uint li_flags; /* misc flags */ 327 struct xfs_log_item *li_bio_list; /* buffer item list */ 328 void (*li_cb)(struct xfs_buf *, 329 struct xfs_log_item *); 330 /* buffer item iodone */ 331 /* callback func */ 332 const struct xfs_item_ops *li_ops; /* function list */ 333 334 /* delayed logging */ 335 struct list_head li_cil; /* CIL pointers */ 336 struct xfs_log_vec *li_lv; /* active log vector */ 337 xfs_lsn_t li_seq; /* CIL commit seq */ 338 } xfs_log_item_t; 339 340 #define XFS_LI_IN_AIL 0x1 341 #define XFS_LI_ABORTED 0x2 342 343 #define XFS_LI_FLAGS \ 344 { XFS_LI_IN_AIL, "IN_AIL" }, \ 345 { XFS_LI_ABORTED, "ABORTED" } 346 347 struct xfs_item_ops { 348 uint (*iop_size)(xfs_log_item_t *); 349 void (*iop_format)(xfs_log_item_t *, struct xfs_log_iovec *); 350 void (*iop_pin)(xfs_log_item_t *); 351 void (*iop_unpin)(xfs_log_item_t *, int remove); 352 uint (*iop_push)(struct xfs_log_item *, struct list_head *); 353 void (*iop_unlock)(xfs_log_item_t *); 354 xfs_lsn_t (*iop_committed)(xfs_log_item_t *, xfs_lsn_t); 355 void (*iop_committing)(xfs_log_item_t *, xfs_lsn_t); 356 }; 357 358 #define IOP_SIZE(ip) (*(ip)->li_ops->iop_size)(ip) 359 #define IOP_FORMAT(ip,vp) (*(ip)->li_ops->iop_format)(ip, vp) 360 #define IOP_PIN(ip) (*(ip)->li_ops->iop_pin)(ip) 361 #define IOP_UNPIN(ip, remove) (*(ip)->li_ops->iop_unpin)(ip, remove) 362 #define IOP_PUSH(ip, list) (*(ip)->li_ops->iop_push)(ip, list) 363 #define IOP_UNLOCK(ip) (*(ip)->li_ops->iop_unlock)(ip) 364 #define IOP_COMMITTED(ip, lsn) (*(ip)->li_ops->iop_committed)(ip, lsn) 365 #define IOP_COMMITTING(ip, lsn) (*(ip)->li_ops->iop_committing)(ip, lsn) 366 367 /* 368 * Return values for the IOP_PUSH() routines. 369 */ 370 #define XFS_ITEM_SUCCESS 0 371 #define XFS_ITEM_PINNED 1 372 #define XFS_ITEM_LOCKED 2 373 #define XFS_ITEM_FLUSHING 3 374 375 /* 376 * This is the type of function which can be given to xfs_trans_callback() 377 * to be called upon the transaction's commit to disk. 378 */ 379 typedef void (*xfs_trans_callback_t)(struct xfs_trans *, void *); 380 381 /* 382 * This is the structure maintained for every active transaction. 383 */ 384 typedef struct xfs_trans { 385 unsigned int t_magic; /* magic number */ 386 xfs_log_callback_t t_logcb; /* log callback struct */ 387 unsigned int t_type; /* transaction type */ 388 unsigned int t_log_res; /* amt of log space resvd */ 389 unsigned int t_log_count; /* count for perm log res */ 390 unsigned int t_blk_res; /* # of blocks resvd */ 391 unsigned int t_blk_res_used; /* # of resvd blocks used */ 392 unsigned int t_rtx_res; /* # of rt extents resvd */ 393 unsigned int t_rtx_res_used; /* # of resvd rt extents used */ 394 struct xlog_ticket *t_ticket; /* log mgr ticket */ 395 xfs_lsn_t t_lsn; /* log seq num of start of 396 * transaction. */ 397 xfs_lsn_t t_commit_lsn; /* log seq num of end of 398 * transaction. */ 399 struct xfs_mount *t_mountp; /* ptr to fs mount struct */ 400 struct xfs_dquot_acct *t_dqinfo; /* acctg info for dquots */ 401 unsigned int t_flags; /* misc flags */ 402 int64_t t_icount_delta; /* superblock icount change */ 403 int64_t t_ifree_delta; /* superblock ifree change */ 404 int64_t t_fdblocks_delta; /* superblock fdblocks chg */ 405 int64_t t_res_fdblocks_delta; /* on-disk only chg */ 406 int64_t t_frextents_delta;/* superblock freextents chg*/ 407 int64_t t_res_frextents_delta; /* on-disk only chg */ 408 #if defined(DEBUG) || defined(XFS_WARN) 409 int64_t t_ag_freeblks_delta; /* debugging counter */ 410 int64_t t_ag_flist_delta; /* debugging counter */ 411 int64_t t_ag_btree_delta; /* debugging counter */ 412 #endif 413 int64_t t_dblocks_delta;/* superblock dblocks change */ 414 int64_t t_agcount_delta;/* superblock agcount change */ 415 int64_t t_imaxpct_delta;/* superblock imaxpct change */ 416 int64_t t_rextsize_delta;/* superblock rextsize chg */ 417 int64_t t_rbmblocks_delta;/* superblock rbmblocks chg */ 418 int64_t t_rblocks_delta;/* superblock rblocks change */ 419 int64_t t_rextents_delta;/* superblocks rextents chg */ 420 int64_t t_rextslog_delta;/* superblocks rextslog chg */ 421 struct list_head t_items; /* log item descriptors */ 422 xfs_trans_header_t t_header; /* header for in-log trans */ 423 struct list_head t_busy; /* list of busy extents */ 424 unsigned long t_pflags; /* saved process flags state */ 425 } xfs_trans_t; 426 427 /* 428 * XFS transaction mechanism exported interfaces that are 429 * actually macros. 430 */ 431 #define xfs_trans_get_log_res(tp) ((tp)->t_log_res) 432 #define xfs_trans_get_log_count(tp) ((tp)->t_log_count) 433 #define xfs_trans_get_block_res(tp) ((tp)->t_blk_res) 434 #define xfs_trans_set_sync(tp) ((tp)->t_flags |= XFS_TRANS_SYNC) 435 436 #if defined(DEBUG) || defined(XFS_WARN) 437 #define xfs_trans_agblocks_delta(tp, d) ((tp)->t_ag_freeblks_delta += (int64_t)d) 438 #define xfs_trans_agflist_delta(tp, d) ((tp)->t_ag_flist_delta += (int64_t)d) 439 #define xfs_trans_agbtree_delta(tp, d) ((tp)->t_ag_btree_delta += (int64_t)d) 440 #else 441 #define xfs_trans_agblocks_delta(tp, d) 442 #define xfs_trans_agflist_delta(tp, d) 443 #define xfs_trans_agbtree_delta(tp, d) 444 #endif 445 446 /* 447 * XFS transaction mechanism exported interfaces. 448 */ 449 xfs_trans_t *xfs_trans_alloc(struct xfs_mount *, uint); 450 xfs_trans_t *_xfs_trans_alloc(struct xfs_mount *, uint, xfs_km_flags_t); 451 xfs_trans_t *xfs_trans_dup(xfs_trans_t *); 452 int xfs_trans_reserve(xfs_trans_t *, uint, uint, uint, 453 uint, uint); 454 void xfs_trans_mod_sb(xfs_trans_t *, uint, int64_t); 455 456 struct xfs_buf *xfs_trans_get_buf_map(struct xfs_trans *tp, 457 struct xfs_buftarg *target, 458 struct xfs_buf_map *map, int nmaps, 459 uint flags); 460 461 static inline struct xfs_buf * 462 xfs_trans_get_buf( 463 struct xfs_trans *tp, 464 struct xfs_buftarg *target, 465 xfs_daddr_t blkno, 466 int numblks, 467 uint flags) 468 { 469 DEFINE_SINGLE_BUF_MAP(map, blkno, numblks); 470 return xfs_trans_get_buf_map(tp, target, &map, 1, flags); 471 } 472 473 int xfs_trans_read_buf_map(struct xfs_mount *mp, 474 struct xfs_trans *tp, 475 struct xfs_buftarg *target, 476 struct xfs_buf_map *map, int nmaps, 477 xfs_buf_flags_t flags, 478 struct xfs_buf **bpp, 479 const struct xfs_buf_ops *ops); 480 481 static inline int 482 xfs_trans_read_buf( 483 struct xfs_mount *mp, 484 struct xfs_trans *tp, 485 struct xfs_buftarg *target, 486 xfs_daddr_t blkno, 487 int numblks, 488 xfs_buf_flags_t flags, 489 struct xfs_buf **bpp, 490 const struct xfs_buf_ops *ops) 491 { 492 DEFINE_SINGLE_BUF_MAP(map, blkno, numblks); 493 return xfs_trans_read_buf_map(mp, tp, target, &map, 1, 494 flags, bpp, ops); 495 } 496 497 struct xfs_buf *xfs_trans_getsb(xfs_trans_t *, struct xfs_mount *, int); 498 499 void xfs_trans_brelse(xfs_trans_t *, struct xfs_buf *); 500 void xfs_trans_bjoin(xfs_trans_t *, struct xfs_buf *); 501 void xfs_trans_bhold(xfs_trans_t *, struct xfs_buf *); 502 void xfs_trans_bhold_release(xfs_trans_t *, struct xfs_buf *); 503 void xfs_trans_binval(xfs_trans_t *, struct xfs_buf *); 504 void xfs_trans_inode_buf(xfs_trans_t *, struct xfs_buf *); 505 void xfs_trans_stale_inode_buf(xfs_trans_t *, struct xfs_buf *); 506 void xfs_trans_dquot_buf(xfs_trans_t *, struct xfs_buf *, uint); 507 void xfs_trans_inode_alloc_buf(xfs_trans_t *, struct xfs_buf *); 508 void xfs_trans_ichgtime(struct xfs_trans *, struct xfs_inode *, int); 509 void xfs_trans_ijoin(struct xfs_trans *, struct xfs_inode *, uint); 510 void xfs_trans_log_buf(xfs_trans_t *, struct xfs_buf *, uint, uint); 511 void xfs_trans_log_inode(xfs_trans_t *, struct xfs_inode *, uint); 512 struct xfs_efi_log_item *xfs_trans_get_efi(xfs_trans_t *, uint); 513 void xfs_efi_release(struct xfs_efi_log_item *, uint); 514 void xfs_trans_log_efi_extent(xfs_trans_t *, 515 struct xfs_efi_log_item *, 516 xfs_fsblock_t, 517 xfs_extlen_t); 518 struct xfs_efd_log_item *xfs_trans_get_efd(xfs_trans_t *, 519 struct xfs_efi_log_item *, 520 uint); 521 void xfs_trans_log_efd_extent(xfs_trans_t *, 522 struct xfs_efd_log_item *, 523 xfs_fsblock_t, 524 xfs_extlen_t); 525 int xfs_trans_commit(xfs_trans_t *, uint flags); 526 void xfs_trans_cancel(xfs_trans_t *, int); 527 int xfs_trans_ail_init(struct xfs_mount *); 528 void xfs_trans_ail_destroy(struct xfs_mount *); 529 530 extern kmem_zone_t *xfs_trans_zone; 531 extern kmem_zone_t *xfs_log_item_desc_zone; 532 533 #endif /* __KERNEL__ */ 534 535 void xfs_trans_init(struct xfs_mount *); 536 int xfs_trans_roll(struct xfs_trans **, struct xfs_inode *); 537 538 #endif /* __XFS_TRANS_H__ */ 539