fs/xfs/xfs_trans.h

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