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_5_3_BUF          0x1234  /* v1 bufs, 1-block inode buffers */
  43 #define XFS_LI_5_3_INODE        0x1235  /* 1-block inode buffers */
  44 #define XFS_LI_EFI              0x1236
  45 #define XFS_LI_EFD              0x1237
  46 #define XFS_LI_IUNLINK          0x1238
  47 #define XFS_LI_6_1_INODE        0x1239  /* 4K non-aligned inode bufs */
  48 #define XFS_LI_6_1_BUF          0x123a  /* v1, 4K inode buffers */
  49 #define XFS_LI_INODE            0x123b  /* aligned ino chunks, var-size ibufs */
  50 #define XFS_LI_BUF              0x123c  /* v2 bufs, variable sized inode bufs */
  51 #define XFS_LI_DQUOT            0x123d
  52 #define XFS_LI_QUOTAOFF         0x123e
  53
  54 /*
  55  * Transaction types.  Used to distinguish types of buffers.
  56  */
  57 #define XFS_TRANS_SETATTR_NOT_SIZE      1
  58 #define XFS_TRANS_SETATTR_SIZE          2
  59 #define XFS_TRANS_INACTIVE              3
  60 #define XFS_TRANS_CREATE                4
  61 #define XFS_TRANS_CREATE_TRUNC          5
  62 #define XFS_TRANS_TRUNCATE_FILE         6
  63 #define XFS_TRANS_REMOVE                7
  64 #define XFS_TRANS_LINK                  8
  65 #define XFS_TRANS_RENAME                9
  66 #define XFS_TRANS_MKDIR                 10
  67 #define XFS_TRANS_RMDIR                 11
  68 #define XFS_TRANS_SYMLINK               12
  69 #define XFS_TRANS_SET_DMATTRS           13
  70 #define XFS_TRANS_GROWFS                14
  71 #define XFS_TRANS_STRAT_WRITE           15
  72 #define XFS_TRANS_DIOSTRAT              16
  73 #define XFS_TRANS_WRITE_SYNC            17
  74 #define XFS_TRANS_WRITEID               18
  75 #define XFS_TRANS_ADDAFORK              19
  76 #define XFS_TRANS_ATTRINVAL             20
  77 #define XFS_TRANS_ATRUNCATE             21
  78 #define XFS_TRANS_ATTR_SET              22
  79 #define XFS_TRANS_ATTR_RM               23
  80 #define XFS_TRANS_ATTR_FLAG             24
  81 #define XFS_TRANS_CLEAR_AGI_BUCKET      25
  82 #define XFS_TRANS_QM_SBCHANGE           26
  83 /*
  84  * Dummy entries since we use the transaction type to index into the
  85  * trans_type[] in xlog_recover_print_trans_head()
  86  */
  87 #define XFS_TRANS_DUMMY1                27
  88 #define XFS_TRANS_DUMMY2                28
  89 #define XFS_TRANS_QM_QUOTAOFF           29
  90 #define XFS_TRANS_QM_DQALLOC            30
  91 #define XFS_TRANS_QM_SETQLIM            31
  92 #define XFS_TRANS_QM_DQCLUSTER          32
  93 #define XFS_TRANS_QM_QINOCREATE         33
  94 #define XFS_TRANS_QM_QUOTAOFF_END       34
  95 #define XFS_TRANS_SB_UNIT               35
  96 #define XFS_TRANS_FSYNC_TS              36
  97 #define XFS_TRANS_GROWFSRT_ALLOC        37
  98 #define XFS_TRANS_GROWFSRT_ZERO         38
  99 #define XFS_TRANS_GROWFSRT_FREE         39
 100 #define XFS_TRANS_SWAPEXT               40
 101 #define XFS_TRANS_TYPE_MAX              40
 102 /* new transaction types need to be reflected in xfs_logprint(8) */
 103
 104
 105 #ifdef __KERNEL__
 106 struct xfs_buf;
 107 struct xfs_buftarg;
 108 struct xfs_efd_log_item;
 109 struct xfs_efi_log_item;
 110 struct xfs_inode;
 111 struct xfs_item_ops;
 112 struct xfs_log_iovec;
 113 struct xfs_log_item;
 114 struct xfs_log_item_desc;
 115 struct xfs_mount;
 116 struct xfs_trans;
 117 struct xfs_dquot_acct;
 118
 119 typedef struct xfs_ail_entry {
 120         struct xfs_log_item     *ail_forw;      /* AIL forw pointer */
 121         struct xfs_log_item     *ail_back;      /* AIL back pointer */
 122 } xfs_ail_entry_t;
 123
 124 typedef struct xfs_log_item {
 125         xfs_ail_entry_t                 li_ail;         /* AIL pointers */
 126         xfs_lsn_t                       li_lsn;         /* last on-disk lsn */
 127         struct xfs_log_item_desc        *li_desc;       /* ptr to current desc*/
 128         struct xfs_mount                *li_mountp;     /* ptr to fs mount */
 129         uint                            li_type;        /* item type */
 130         uint                            li_flags;       /* misc flags */
 131         struct xfs_log_item             *li_bio_list;   /* buffer item list */
 132         void                            (*li_cb)(struct xfs_buf *,
 133                                                  struct xfs_log_item *);
 134                                                         /* buffer item iodone */
 135                                                         /* callback func */
 136         struct xfs_item_ops             *li_ops;        /* function list */
 137 } xfs_log_item_t;
 138
 139 #define XFS_LI_IN_AIL   0x1
 140 #define XFS_LI_ABORTED  0x2
 141
 142 typedef struct xfs_item_ops {
 143         uint (*iop_size)(xfs_log_item_t *);
 144         void (*iop_format)(xfs_log_item_t *, struct xfs_log_iovec *);
 145         void (*iop_pin)(xfs_log_item_t *);
 146         void (*iop_unpin)(xfs_log_item_t *, int);
 147         void (*iop_unpin_remove)(xfs_log_item_t *, struct xfs_trans *);
 148         uint (*iop_trylock)(xfs_log_item_t *);
 149         void (*iop_unlock)(xfs_log_item_t *);
 150         xfs_lsn_t (*iop_committed)(xfs_log_item_t *, xfs_lsn_t);
 151         void (*iop_push)(xfs_log_item_t *);
 152         void (*iop_pushbuf)(xfs_log_item_t *);
 153         void (*iop_committing)(xfs_log_item_t *, xfs_lsn_t);
 154 } xfs_item_ops_t;
 155
 156 #define IOP_SIZE(ip)            (*(ip)->li_ops->iop_size)(ip)
 157 #define IOP_FORMAT(ip,vp)       (*(ip)->li_ops->iop_format)(ip, vp)
 158 #define IOP_PIN(ip)             (*(ip)->li_ops->iop_pin)(ip)
 159 #define IOP_UNPIN(ip, flags)    (*(ip)->li_ops->iop_unpin)(ip, flags)
 160 #define IOP_UNPIN_REMOVE(ip,tp) (*(ip)->li_ops->iop_unpin_remove)(ip, tp)
 161 #define IOP_TRYLOCK(ip)         (*(ip)->li_ops->iop_trylock)(ip)
 162 #define IOP_UNLOCK(ip)          (*(ip)->li_ops->iop_unlock)(ip)
 163 #define IOP_COMMITTED(ip, lsn)  (*(ip)->li_ops->iop_committed)(ip, lsn)
 164 #define IOP_PUSH(ip)            (*(ip)->li_ops->iop_push)(ip)
 165 #define IOP_PUSHBUF(ip)         (*(ip)->li_ops->iop_pushbuf)(ip)
 166 #define IOP_COMMITTING(ip, lsn) (*(ip)->li_ops->iop_committing)(ip, lsn)
 167
 168 /*
 169  * Return values for the IOP_TRYLOCK() routines.
 170  */
 171 #define XFS_ITEM_SUCCESS        0
 172 #define XFS_ITEM_PINNED         1
 173 #define XFS_ITEM_LOCKED         2
 174 #define XFS_ITEM_FLUSHING       3
 175 #define XFS_ITEM_PUSHBUF        4
 176
 177 #endif  /* __KERNEL__ */
 178
 179 /*
 180  * This structure is used to track log items associated with
 181  * a transaction.  It points to the log item and keeps some
 182  * flags to track the state of the log item.  It also tracks
 183  * the amount of space needed to log the item it describes
 184  * once we get to commit processing (see xfs_trans_commit()).
 185  */
 186 typedef struct xfs_log_item_desc {
 187         xfs_log_item_t  *lid_item;
 188         ushort          lid_size;
 189         unsigned char   lid_flags;
 190         unsigned char   lid_index;
 191 } xfs_log_item_desc_t;
 192
 193 #define XFS_LID_DIRTY           0x1
 194 #define XFS_LID_PINNED          0x2
 195 #define XFS_LID_BUF_STALE       0x8
 196
 197 /*
 198  * This structure is used to maintain a chunk list of log_item_desc
 199  * structures. The free field is a bitmask indicating which descriptors
 200  * in this chunk's array are free.  The unused field is the first value
 201  * not used since this chunk was allocated.
 202  */
 203 #define XFS_LIC_NUM_SLOTS       15
 204 typedef struct xfs_log_item_chunk {
 205         struct xfs_log_item_chunk       *lic_next;
 206         ushort                          lic_free;
 207         ushort                          lic_unused;
 208         xfs_log_item_desc_t             lic_descs[XFS_LIC_NUM_SLOTS];
 209 } xfs_log_item_chunk_t;
 210
 211 #define XFS_LIC_MAX_SLOT        (XFS_LIC_NUM_SLOTS - 1)
 212 #define XFS_LIC_FREEMASK        ((1 << XFS_LIC_NUM_SLOTS) - 1)
 213
 214
 215 /*
 216  * Initialize the given chunk.  Set the chunk's free descriptor mask
 217  * to indicate that all descriptors are free.  The caller gets to set
 218  * lic_unused to the right value (0 matches all free).  The
 219  * lic_descs.lid_index values are set up as each desc is allocated.
 220  */
 221 #define XFS_LIC_INIT(cp)        xfs_lic_init(cp)
 222 static inline void xfs_lic_init(xfs_log_item_chunk_t *cp)
 223 {
 224         cp->lic_free = XFS_LIC_FREEMASK;
 225 }
 226
 227 #define XFS_LIC_INIT_SLOT(cp,slot)      xfs_lic_init_slot(cp, slot)
 228 static inline void xfs_lic_init_slot(xfs_log_item_chunk_t *cp, int slot)
 229 {
 230         cp->lic_descs[slot].lid_index = (unsigned char)(slot);
 231 }
 232
 233 #define XFS_LIC_VACANCY(cp)             xfs_lic_vacancy(cp)
 234 static inline int xfs_lic_vacancy(xfs_log_item_chunk_t *cp)
 235 {
 236         return cp->lic_free & XFS_LIC_FREEMASK;
 237 }
 238
 239 #define XFS_LIC_ALL_FREE(cp)            xfs_lic_all_free(cp)
 240 static inline void xfs_lic_all_free(xfs_log_item_chunk_t *cp)
 241 {
 242         cp->lic_free = XFS_LIC_FREEMASK;
 243 }
 244
 245 #define XFS_LIC_ARE_ALL_FREE(cp)        xfs_lic_are_all_free(cp)
 246 static inline int xfs_lic_are_all_free(xfs_log_item_chunk_t *cp)
 247 {
 248         return ((cp->lic_free & XFS_LIC_FREEMASK) == XFS_LIC_FREEMASK);
 249 }
 250
 251 #define XFS_LIC_ISFREE(cp,slot) xfs_lic_isfree(cp,slot)
 252 static inline int xfs_lic_isfree(xfs_log_item_chunk_t *cp, int slot)
 253 {
 254         return (cp->lic_free & (1 << slot));
 255 }
 256
 257 #define XFS_LIC_CLAIM(cp,slot)          xfs_lic_claim(cp,slot)
 258 static inline void xfs_lic_claim(xfs_log_item_chunk_t *cp, int slot)
 259 {
 260         cp->lic_free &= ~(1 << slot);
 261 }
 262
 263 #define XFS_LIC_RELSE(cp,slot)          xfs_lic_relse(cp,slot)
 264 static inline void xfs_lic_relse(xfs_log_item_chunk_t *cp, int slot)
 265 {
 266         cp->lic_free |= 1 << slot;
 267 }
 268
 269 #define XFS_LIC_SLOT(cp,slot)           xfs_lic_slot(cp,slot)
 270 static inline xfs_log_item_desc_t *
 271 xfs_lic_slot(xfs_log_item_chunk_t *cp, int slot)
 272 {
 273         return &(cp->lic_descs[slot]);
 274 }
 275
 276 #define XFS_LIC_DESC_TO_SLOT(dp)        xfs_lic_desc_to_slot(dp)
 277 static inline int xfs_lic_desc_to_slot(xfs_log_item_desc_t *dp)
 278 {
 279         return (uint)dp->lid_index;
 280 }
 281
 282 /*
 283  * Calculate the address of a chunk given a descriptor pointer:
 284  * dp - dp->lid_index give the address of the start of the lic_descs array.
 285  * From this we subtract the offset of the lic_descs field in a chunk.
 286  * All of this yields the address of the chunk, which is
 287  * cast to a chunk pointer.
 288  */
 289 #define XFS_LIC_DESC_TO_CHUNK(dp)       xfs_lic_desc_to_chunk(dp)
 290 static inline xfs_log_item_chunk_t *
 291 xfs_lic_desc_to_chunk(xfs_log_item_desc_t *dp)
 292 {
 293         return (xfs_log_item_chunk_t*) \
 294                 (((xfs_caddr_t)((dp) - (dp)->lid_index)) - \
 295                 (xfs_caddr_t)(((xfs_log_item_chunk_t*)0)->lic_descs));
 296 }
 297
 298 #ifdef __KERNEL__
 299 /*
 300  * This structure is used to maintain a list of block ranges that have been
 301  * freed in the transaction.  The ranges are listed in the perag[] busy list
 302  * between when they're freed and the transaction is committed to disk.
 303  */
 304
 305 typedef struct xfs_log_busy_slot {
 306         xfs_agnumber_t          lbc_ag;
 307         ushort                  lbc_idx;        /* index in perag.busy[] */
 308 } xfs_log_busy_slot_t;
 309
 310 #define XFS_LBC_NUM_SLOTS       31
 311 typedef struct xfs_log_busy_chunk {
 312         struct xfs_log_busy_chunk       *lbc_next;
 313         uint                            lbc_free;       /* free slots bitmask */
 314         ushort                          lbc_unused;     /* first unused */
 315         xfs_log_busy_slot_t             lbc_busy[XFS_LBC_NUM_SLOTS];
 316 } xfs_log_busy_chunk_t;
 317
 318 #define XFS_LBC_MAX_SLOT        (XFS_LBC_NUM_SLOTS - 1)
 319 #define XFS_LBC_FREEMASK        ((1U << XFS_LBC_NUM_SLOTS) - 1)
 320
 321 #define XFS_LBC_INIT(cp)        ((cp)->lbc_free = XFS_LBC_FREEMASK)
 322 #define XFS_LBC_CLAIM(cp, slot) ((cp)->lbc_free &= ~(1 << (slot)))
 323 #define XFS_LBC_SLOT(cp, slot)  (&((cp)->lbc_busy[(slot)]))
 324 #define XFS_LBC_VACANCY(cp)     (((cp)->lbc_free) & XFS_LBC_FREEMASK)
 325 #define XFS_LBC_ISFREE(cp, slot) ((cp)->lbc_free & (1 << (slot)))
 326
 327 /*
 328  * This is the type of function which can be given to xfs_trans_callback()
 329  * to be called upon the transaction's commit to disk.
 330  */
 331 typedef void (*xfs_trans_callback_t)(struct xfs_trans *, void *);
 332
 333 /*
 334  * This is the structure maintained for every active transaction.
 335  */
 336 typedef struct xfs_trans {
 337         unsigned int            t_magic;        /* magic number */
 338         xfs_log_callback_t      t_logcb;        /* log callback struct */
 339         unsigned int            t_type;         /* transaction type */
 340         unsigned int            t_log_res;      /* amt of log space resvd */
 341         unsigned int            t_log_count;    /* count for perm log res */
 342         unsigned int            t_blk_res;      /* # of blocks resvd */
 343         unsigned int            t_blk_res_used; /* # of resvd blocks used */
 344         unsigned int            t_rtx_res;      /* # of rt extents resvd */
 345         unsigned int            t_rtx_res_used; /* # of resvd rt extents used */
 346         xfs_log_ticket_t        t_ticket;       /* log mgr ticket */
 347         sema_t                  t_sema;         /* sema for commit completion */
 348         xfs_lsn_t               t_lsn;          /* log seq num of start of
 349                                                  * transaction. */
 350         xfs_lsn_t               t_commit_lsn;   /* log seq num of end of
 351                                                  * transaction. */
 352         struct xfs_mount        *t_mountp;      /* ptr to fs mount struct */
 353         struct xfs_dquot_acct   *t_dqinfo;      /* acctg info for dquots */
 354         xfs_trans_callback_t    t_callback;     /* transaction callback */
 355         void                    *t_callarg;     /* callback arg */
 356         unsigned int            t_flags;        /* misc flags */
 357         long                    t_icount_delta; /* superblock icount change */
 358         long                    t_ifree_delta;  /* superblock ifree change */
 359         long                    t_fdblocks_delta; /* superblock fdblocks chg */
 360         long                    t_res_fdblocks_delta; /* on-disk only chg */
 361         long                    t_frextents_delta;/* superblock freextents chg*/
 362         long                    t_res_frextents_delta; /* on-disk only chg */
 363 #ifdef DEBUG
 364         long                    t_ag_freeblks_delta; /* debugging counter */
 365         long                    t_ag_flist_delta; /* debugging counter */
 366         long                    t_ag_btree_delta; /* debugging counter */
 367 #endif
 368         long                    t_dblocks_delta;/* superblock dblocks change */
 369         long                    t_agcount_delta;/* superblock agcount change */
 370         long                    t_imaxpct_delta;/* superblock imaxpct change */
 371         long                    t_rextsize_delta;/* superblock rextsize chg */
 372         long                    t_rbmblocks_delta;/* superblock rbmblocks chg */
 373         long                    t_rblocks_delta;/* superblock rblocks change */
 374         long                    t_rextents_delta;/* superblocks rextents chg */
 375         long                    t_rextslog_delta;/* superblocks rextslog chg */
 376         unsigned int            t_items_free;   /* log item descs free */
 377         xfs_log_item_chunk_t    t_items;        /* first log item desc chunk */
 378         xfs_trans_header_t      t_header;       /* header for in-log trans */
 379         unsigned int            t_busy_free;    /* busy descs free */
 380         xfs_log_busy_chunk_t    t_busy;         /* busy/async free blocks */
 381         unsigned long           t_pflags;       /* saved process flags state */
 382 } xfs_trans_t;
 383
 384 #endif  /* __KERNEL__ */
 385
 386
 387 #define XFS_TRANS_MAGIC         0x5452414E      /* 'TRAN' */
 388 /*
 389  * Values for t_flags.
 390  */
 391 #define XFS_TRANS_DIRTY         0x01    /* something needs to be logged */
 392 #define XFS_TRANS_SB_DIRTY      0x02    /* superblock is modified */
 393 #define XFS_TRANS_PERM_LOG_RES  0x04    /* xact took a permanent log res */
 394 #define XFS_TRANS_SYNC          0x08    /* make commit synchronous */
 395 #define XFS_TRANS_DQ_DIRTY      0x10    /* at least one dquot in trx dirty */
 396 #define XFS_TRANS_RESERVE       0x20    /* OK to use reserved data blocks */
 397
 398 /*
 399  * Values for call flags parameter.
 400  */
 401 #define XFS_TRANS_NOSLEEP               0x1
 402 #define XFS_TRANS_WAIT                  0x2
 403 #define XFS_TRANS_RELEASE_LOG_RES       0x4
 404 #define XFS_TRANS_ABORT                 0x8
 405
 406 /*
 407  * Field values for xfs_trans_mod_sb.
 408  */
 409 #define XFS_TRANS_SB_ICOUNT             0x00000001
 410 #define XFS_TRANS_SB_IFREE              0x00000002
 411 #define XFS_TRANS_SB_FDBLOCKS           0x00000004
 412 #define XFS_TRANS_SB_RES_FDBLOCKS       0x00000008
 413 #define XFS_TRANS_SB_FREXTENTS          0x00000010
 414 #define XFS_TRANS_SB_RES_FREXTENTS      0x00000020
 415 #define XFS_TRANS_SB_DBLOCKS            0x00000040
 416 #define XFS_TRANS_SB_AGCOUNT            0x00000080
 417 #define XFS_TRANS_SB_IMAXPCT            0x00000100
 418 #define XFS_TRANS_SB_REXTSIZE           0x00000200
 419 #define XFS_TRANS_SB_RBMBLOCKS          0x00000400
 420 #define XFS_TRANS_SB_RBLOCKS            0x00000800
 421 #define XFS_TRANS_SB_REXTENTS           0x00001000
 422 #define XFS_TRANS_SB_REXTSLOG           0x00002000
 423
 424
 425 /*
 426  * Various log reservation values.
 427  * These are based on the size of the file system block
 428  * because that is what most transactions manipulate.
 429  * Each adds in an additional 128 bytes per item logged to
 430  * try to account for the overhead of the transaction mechanism.
 431  *
 432  * Note:
 433  * Most of the reservations underestimate the number of allocation
 434  * groups into which they could free extents in the xfs_bmap_finish()
 435  * call.  This is because the number in the worst case is quite high
 436  * and quite unusual.  In order to fix this we need to change
 437  * xfs_bmap_finish() to free extents in only a single AG at a time.
 438  * This will require changes to the EFI code as well, however, so that
 439  * the EFI for the extents not freed is logged again in each transaction.
 440  * See bug 261917.
 441  */
 442
 443 /*
 444  * Per-extent log reservation for the allocation btree changes
 445  * involved in freeing or allocating an extent.
 446  * 2 trees * (2 blocks/level * max depth - 1) * block size
 447  */
 448 #define XFS_ALLOCFREE_LOG_RES(mp,nx) \
 449         ((nx) * (2 * XFS_FSB_TO_B((mp), 2 * XFS_AG_MAXLEVELS(mp) - 1)))
 450 #define XFS_ALLOCFREE_LOG_COUNT(mp,nx) \
 451         ((nx) * (2 * (2 * XFS_AG_MAXLEVELS(mp) - 1)))
 452
 453 /*
 454  * Per-directory log reservation for any directory change.
 455  * dir blocks: (1 btree block per level + data block + free block) * dblock size
 456  * bmap btree: (levels + 2) * max depth * block size
 457  * v2 directory blocks can be fragmented below the dirblksize down to the fsb
 458  * size, so account for that in the DAENTER macros.
 459  */
 460 #define XFS_DIROP_LOG_RES(mp)   \
 461         (XFS_FSB_TO_B(mp, XFS_DAENTER_BLOCKS(mp, XFS_DATA_FORK)) + \
 462          (XFS_FSB_TO_B(mp, XFS_DAENTER_BMAPS(mp, XFS_DATA_FORK) + 1)))
 463 #define XFS_DIROP_LOG_COUNT(mp) \
 464         (XFS_DAENTER_BLOCKS(mp, XFS_DATA_FORK) + \
 465          XFS_DAENTER_BMAPS(mp, XFS_DATA_FORK) + 1)
 466
 467 /*
 468  * In a write transaction we can allocate a maximum of 2
 469  * extents.  This gives:
 470  *    the inode getting the new extents: inode size
 471  *    the inode\'s bmap btree: max depth * block size
 472  *    the agfs of the ags from which the extents are allocated: 2 * sector
 473  *    the superblock free block counter: sector size
 474  *    the allocation btrees: 2 exts * 2 trees * (2 * max depth - 1) * block size
 475  * And the bmap_finish transaction can free bmap blocks in a join:
 476  *    the agfs of the ags containing the blocks: 2 * sector size
 477  *    the agfls of the ags containing the blocks: 2 * sector size
 478  *    the super block free block counter: sector size
 479  *    the allocation btrees: 2 exts * 2 trees * (2 * max depth - 1) * block size
 480  */
 481 #define XFS_CALC_WRITE_LOG_RES(mp) \
 482         (MAX( \
 483          ((mp)->m_sb.sb_inodesize + \
 484           XFS_FSB_TO_B((mp), XFS_BM_MAXLEVELS(mp, XFS_DATA_FORK)) + \
 485           (2 * (mp)->m_sb.sb_sectsize) + \
 486           (mp)->m_sb.sb_sectsize + \
 487           XFS_ALLOCFREE_LOG_RES(mp, 2) + \
 488           (128 * (4 + XFS_BM_MAXLEVELS(mp, XFS_DATA_FORK) + XFS_ALLOCFREE_LOG_COUNT(mp, 2)))),\
 489          ((2 * (mp)->m_sb.sb_sectsize) + \
 490           (2 * (mp)->m_sb.sb_sectsize) + \
 491           (mp)->m_sb.sb_sectsize + \
 492           XFS_ALLOCFREE_LOG_RES(mp, 2) + \
 493           (128 * (5 + XFS_ALLOCFREE_LOG_COUNT(mp, 2))))))
 494
 495 #define XFS_WRITE_LOG_RES(mp)   ((mp)->m_reservations.tr_write)
 496
 497 /*
 498  * In truncating a file we free up to two extents at once.  We can modify:
 499  *    the inode being truncated: inode size
 500  *    the inode\'s bmap btree: (max depth + 1) * block size
 501  * And the bmap_finish transaction can free the blocks and bmap blocks:
 502  *    the agf for each of the ags: 4 * sector size
 503  *    the agfl for each of the ags: 4 * sector size
 504  *    the super block to reflect the freed blocks: sector size
 505  *    worst case split in allocation btrees per extent assuming 4 extents:
 506  *              4 exts * 2 trees * (2 * max depth - 1) * block size
 507  *    the inode btree: max depth * blocksize
 508  *    the allocation btrees: 2 trees * (max depth - 1) * block size
 509  */
 510 #define XFS_CALC_ITRUNCATE_LOG_RES(mp) \
 511         (MAX( \
 512          ((mp)->m_sb.sb_inodesize + \
 513           XFS_FSB_TO_B((mp), XFS_BM_MAXLEVELS(mp, XFS_DATA_FORK) + 1) + \
 514           (128 * (2 + XFS_BM_MAXLEVELS(mp, XFS_DATA_FORK)))), \
 515          ((4 * (mp)->m_sb.sb_sectsize) + \
 516           (4 * (mp)->m_sb.sb_sectsize) + \
 517           (mp)->m_sb.sb_sectsize + \
 518           XFS_ALLOCFREE_LOG_RES(mp, 4) + \
 519           (128 * (9 + XFS_ALLOCFREE_LOG_COUNT(mp, 4))) + \
 520           (128 * 5) + \
 521           XFS_ALLOCFREE_LOG_RES(mp, 1) + \
 522            (128 * (2 + XFS_IALLOC_BLOCKS(mp) + XFS_IN_MAXLEVELS(mp) + \
 523             XFS_ALLOCFREE_LOG_COUNT(mp, 1))))))
 524
 525 #define XFS_ITRUNCATE_LOG_RES(mp)   ((mp)->m_reservations.tr_itruncate)
 526
 527 /*
 528  * In renaming a files we can modify:
 529  *    the four inodes involved: 4 * inode size
 530  *    the two directory btrees: 2 * (max depth + v2) * dir block size
 531  *    the two directory bmap btrees: 2 * max depth * block size
 532  * And the bmap_finish transaction can free dir and bmap blocks (two sets
 533  *      of bmap blocks) giving:
 534  *    the agf for the ags in which the blocks live: 3 * sector size
 535  *    the agfl for the ags in which the blocks live: 3 * sector size
 536  *    the superblock for the free block count: sector size
 537  *    the allocation btrees: 3 exts * 2 trees * (2 * max depth - 1) * block size
 538  */
 539 #define XFS_CALC_RENAME_LOG_RES(mp) \
 540         (MAX( \
 541          ((4 * (mp)->m_sb.sb_inodesize) + \
 542           (2 * XFS_DIROP_LOG_RES(mp)) + \
 543           (128 * (4 + 2 * XFS_DIROP_LOG_COUNT(mp)))), \
 544          ((3 * (mp)->m_sb.sb_sectsize) + \
 545           (3 * (mp)->m_sb.sb_sectsize) + \
 546           (mp)->m_sb.sb_sectsize + \
 547           XFS_ALLOCFREE_LOG_RES(mp, 3) + \
 548           (128 * (7 + XFS_ALLOCFREE_LOG_COUNT(mp, 3))))))
 549
 550 #define XFS_RENAME_LOG_RES(mp)  ((mp)->m_reservations.tr_rename)
 551
 552 /*
 553  * For creating a link to an inode:
 554  *    the parent directory inode: inode size
 555  *    the linked inode: inode size
 556  *    the directory btree could split: (max depth + v2) * dir block size
 557  *    the directory bmap btree could join or split: (max depth + v2) * blocksize
 558  * And the bmap_finish transaction can free some bmap blocks giving:
 559  *    the agf for the ag in which the blocks live: sector size
 560  *    the agfl for the ag in which the blocks live: sector size
 561  *    the superblock for the free block count: sector size
 562  *    the allocation btrees: 2 trees * (2 * max depth - 1) * block size
 563  */
 564 #define XFS_CALC_LINK_LOG_RES(mp) \
 565         (MAX( \
 566          ((mp)->m_sb.sb_inodesize + \
 567           (mp)->m_sb.sb_inodesize + \
 568           XFS_DIROP_LOG_RES(mp) + \
 569           (128 * (2 + XFS_DIROP_LOG_COUNT(mp)))), \
 570          ((mp)->m_sb.sb_sectsize + \
 571           (mp)->m_sb.sb_sectsize + \
 572           (mp)->m_sb.sb_sectsize + \
 573           XFS_ALLOCFREE_LOG_RES(mp, 1) + \
 574           (128 * (3 + XFS_ALLOCFREE_LOG_COUNT(mp, 1))))))
 575
 576 #define XFS_LINK_LOG_RES(mp)    ((mp)->m_reservations.tr_link)
 577
 578 /*
 579  * For removing a directory entry we can modify:
 580  *    the parent directory inode: inode size
 581  *    the removed inode: inode size
 582  *    the directory btree could join: (max depth + v2) * dir block size
 583  *    the directory bmap btree could join or split: (max depth + v2) * blocksize
 584  * And the bmap_finish transaction can free the dir and bmap blocks giving:
 585  *    the agf for the ag in which the blocks live: 2 * sector size
 586  *    the agfl for the ag in which the blocks live: 2 * sector size
 587  *    the superblock for the free block count: sector size
 588  *    the allocation btrees: 2 exts * 2 trees * (2 * max depth - 1) * block size
 589  */
 590 #define XFS_CALC_REMOVE_LOG_RES(mp)     \
 591         (MAX( \
 592          ((mp)->m_sb.sb_inodesize + \
 593           (mp)->m_sb.sb_inodesize + \
 594           XFS_DIROP_LOG_RES(mp) + \
 595           (128 * (2 + XFS_DIROP_LOG_COUNT(mp)))), \
 596          ((2 * (mp)->m_sb.sb_sectsize) + \
 597           (2 * (mp)->m_sb.sb_sectsize) + \
 598           (mp)->m_sb.sb_sectsize + \
 599           XFS_ALLOCFREE_LOG_RES(mp, 2) + \
 600           (128 * (5 + XFS_ALLOCFREE_LOG_COUNT(mp, 2))))))
 601
 602 #define XFS_REMOVE_LOG_RES(mp)  ((mp)->m_reservations.tr_remove)
 603
 604 /*
 605  * For symlink we can modify:
 606  *    the parent directory inode: inode size
 607  *    the new inode: inode size
 608  *    the inode btree entry: 1 block
 609  *    the directory btree: (max depth + v2) * dir block size
 610  *    the directory inode\'s bmap btree: (max depth + v2) * block size
 611  *    the blocks for the symlink: 1 KB
 612  * Or in the first xact we allocate some inodes giving:
 613  *    the agi and agf of the ag getting the new inodes: 2 * sectorsize
 614  *    the inode blocks allocated: XFS_IALLOC_BLOCKS * blocksize
 615  *    the inode btree: max depth * blocksize
 616  *    the allocation btrees: 2 trees * (2 * max depth - 1) * block size
 617  */
 618 #define XFS_CALC_SYMLINK_LOG_RES(mp)            \
 619         (MAX( \
 620          ((mp)->m_sb.sb_inodesize + \
 621           (mp)->m_sb.sb_inodesize + \
 622           XFS_FSB_TO_B(mp, 1) + \
 623           XFS_DIROP_LOG_RES(mp) + \
 624           1024 + \
 625           (128 * (4 + XFS_DIROP_LOG_COUNT(mp)))), \
 626          (2 * (mp)->m_sb.sb_sectsize + \
 627           XFS_FSB_TO_B((mp), XFS_IALLOC_BLOCKS((mp))) + \
 628           XFS_FSB_TO_B((mp), XFS_IN_MAXLEVELS(mp)) + \
 629           XFS_ALLOCFREE_LOG_RES(mp, 1) + \
 630           (128 * (2 + XFS_IALLOC_BLOCKS(mp) + XFS_IN_MAXLEVELS(mp) + \
 631            XFS_ALLOCFREE_LOG_COUNT(mp, 1))))))
 632
 633 #define XFS_SYMLINK_LOG_RES(mp) ((mp)->m_reservations.tr_symlink)
 634
 635 /*
 636  * For create we can modify:
 637  *    the parent directory inode: inode size
 638  *    the new inode: inode size
 639  *    the inode btree entry: block size
 640  *    the superblock for the nlink flag: sector size
 641  *    the directory btree: (max depth + v2) * dir block size
 642  *    the directory inode\'s bmap btree: (max depth + v2) * block size
 643  * Or in the first xact we allocate some inodes giving:
 644  *    the agi and agf of the ag getting the new inodes: 2 * sectorsize
 645  *    the superblock for the nlink flag: sector size
 646  *    the inode blocks allocated: XFS_IALLOC_BLOCKS * blocksize
 647  *    the inode btree: max depth * blocksize
 648  *    the allocation btrees: 2 trees * (max depth - 1) * block size
 649  */
 650 #define XFS_CALC_CREATE_LOG_RES(mp)             \
 651         (MAX( \
 652          ((mp)->m_sb.sb_inodesize + \
 653           (mp)->m_sb.sb_inodesize + \
 654           (mp)->m_sb.sb_sectsize + \
 655           XFS_FSB_TO_B(mp, 1) + \
 656           XFS_DIROP_LOG_RES(mp) + \
 657           (128 * (3 + XFS_DIROP_LOG_COUNT(mp)))), \
 658          (3 * (mp)->m_sb.sb_sectsize + \
 659           XFS_FSB_TO_B((mp), XFS_IALLOC_BLOCKS((mp))) + \
 660           XFS_FSB_TO_B((mp), XFS_IN_MAXLEVELS(mp)) + \
 661           XFS_ALLOCFREE_LOG_RES(mp, 1) + \
 662           (128 * (2 + XFS_IALLOC_BLOCKS(mp) + XFS_IN_MAXLEVELS(mp) + \
 663            XFS_ALLOCFREE_LOG_COUNT(mp, 1))))))
 664
 665 #define XFS_CREATE_LOG_RES(mp)  ((mp)->m_reservations.tr_create)
 666
 667 /*
 668  * Making a new directory is the same as creating a new file.
 669  */
 670 #define XFS_CALC_MKDIR_LOG_RES(mp)      XFS_CALC_CREATE_LOG_RES(mp)
 671
 672 #define XFS_MKDIR_LOG_RES(mp)   ((mp)->m_reservations.tr_mkdir)
 673
 674 /*
 675  * In freeing an inode we can modify:
 676  *    the inode being freed: inode size
 677  *    the super block free inode counter: sector size
 678  *    the agi hash list and counters: sector size
 679  *    the inode btree entry: block size
 680  *    the on disk inode before ours in the agi hash list: inode cluster size
 681  *    the inode btree: max depth * blocksize
 682  *    the allocation btrees: 2 trees * (max depth - 1) * block size
 683  */
 684 #define XFS_CALC_IFREE_LOG_RES(mp) \
 685         ((mp)->m_sb.sb_inodesize + \
 686          (mp)->m_sb.sb_sectsize + \
 687          (mp)->m_sb.sb_sectsize + \
 688          XFS_FSB_TO_B((mp), 1) + \
 689          MAX((__uint16_t)XFS_FSB_TO_B((mp), 1), XFS_INODE_CLUSTER_SIZE(mp)) + \
 690          (128 * 5) + \
 691           XFS_ALLOCFREE_LOG_RES(mp, 1) + \
 692           (128 * (2 + XFS_IALLOC_BLOCKS(mp) + XFS_IN_MAXLEVELS(mp) + \
 693            XFS_ALLOCFREE_LOG_COUNT(mp, 1))))
 694
 695
 696 #define XFS_IFREE_LOG_RES(mp)   ((mp)->m_reservations.tr_ifree)
 697
 698 /*
 699  * When only changing the inode we log the inode and possibly the superblock
 700  * We also add a bit of slop for the transaction stuff.
 701  */
 702 #define XFS_CALC_ICHANGE_LOG_RES(mp)    ((mp)->m_sb.sb_inodesize + \
 703                                          (mp)->m_sb.sb_sectsize + 512)
 704
 705 #define XFS_ICHANGE_LOG_RES(mp) ((mp)->m_reservations.tr_ichange)
 706
 707 /*
 708  * Growing the data section of the filesystem.
 709  *      superblock
 710  *      agi and agf
 711  *      allocation btrees
 712  */
 713 #define XFS_CALC_GROWDATA_LOG_RES(mp) \
 714         ((mp)->m_sb.sb_sectsize * 3 + \
 715          XFS_ALLOCFREE_LOG_RES(mp, 1) + \
 716          (128 * (3 + XFS_ALLOCFREE_LOG_COUNT(mp, 1))))
 717
 718 #define XFS_GROWDATA_LOG_RES(mp)    ((mp)->m_reservations.tr_growdata)
 719
 720 /*
 721  * Growing the rt section of the filesystem.
 722  * In the first set of transactions (ALLOC) we allocate space to the
 723  * bitmap or summary files.
 724  *      superblock: sector size
 725  *      agf of the ag from which the extent is allocated: sector size
 726  *      bmap btree for bitmap/summary inode: max depth * blocksize
 727  *      bitmap/summary inode: inode size
 728  *      allocation btrees for 1 block alloc: 2 * (2 * maxdepth - 1) * blocksize
 729  */
 730 #define XFS_CALC_GROWRTALLOC_LOG_RES(mp) \
 731         (2 * (mp)->m_sb.sb_sectsize + \
 732          XFS_FSB_TO_B((mp), XFS_BM_MAXLEVELS(mp, XFS_DATA_FORK)) + \
 733          (mp)->m_sb.sb_inodesize + \
 734          XFS_ALLOCFREE_LOG_RES(mp, 1) + \
 735          (128 * \
 736           (3 + XFS_BM_MAXLEVELS(mp, XFS_DATA_FORK) + \
 737            XFS_ALLOCFREE_LOG_COUNT(mp, 1))))
 738
 739 #define XFS_GROWRTALLOC_LOG_RES(mp)     ((mp)->m_reservations.tr_growrtalloc)
 740
 741 /*
 742  * Growing the rt section of the filesystem.
 743  * In the second set of transactions (ZERO) we zero the new metadata blocks.
 744  *      one bitmap/summary block: blocksize
 745  */
 746 #define XFS_CALC_GROWRTZERO_LOG_RES(mp) \
 747         ((mp)->m_sb.sb_blocksize + 128)
 748
 749 #define XFS_GROWRTZERO_LOG_RES(mp)      ((mp)->m_reservations.tr_growrtzero)
 750
 751 /*
 752  * Growing the rt section of the filesystem.
 753  * In the third set of transactions (FREE) we update metadata without
 754  * allocating any new blocks.
 755  *      superblock: sector size
 756  *      bitmap inode: inode size
 757  *      summary inode: inode size
 758  *      one bitmap block: blocksize
 759  *      summary blocks: new summary size
 760  */
 761 #define XFS_CALC_GROWRTFREE_LOG_RES(mp) \
 762         ((mp)->m_sb.sb_sectsize + \
 763          2 * (mp)->m_sb.sb_inodesize + \
 764          (mp)->m_sb.sb_blocksize + \
 765          (mp)->m_rsumsize + \
 766          (128 * 5))
 767
 768 #define XFS_GROWRTFREE_LOG_RES(mp)      ((mp)->m_reservations.tr_growrtfree)
 769
 770 /*
 771  * Logging the inode modification timestamp on a synchronous write.
 772  *      inode
 773  */
 774 #define XFS_CALC_SWRITE_LOG_RES(mp) \
 775         ((mp)->m_sb.sb_inodesize + 128)
 776
 777 #define XFS_SWRITE_LOG_RES(mp)  ((mp)->m_reservations.tr_swrite)
 778
 779 /*
 780  * Logging the inode timestamps on an fsync -- same as SWRITE
 781  * as long as SWRITE logs the entire inode core
 782  */
 783 #define XFS_FSYNC_TS_LOG_RES(mp)        ((mp)->m_reservations.tr_swrite)
 784
 785 /*
 786  * Logging the inode mode bits when writing a setuid/setgid file
 787  *      inode
 788  */
 789 #define XFS_CALC_WRITEID_LOG_RES(mp) \
 790         ((mp)->m_sb.sb_inodesize + 128)
 791
 792 #define XFS_WRITEID_LOG_RES(mp) ((mp)->m_reservations.tr_swrite)
 793
 794 /*
 795  * Converting the inode from non-attributed to attributed.
 796  *      the inode being converted: inode size
 797  *      agf block and superblock (for block allocation)
 798  *      the new block (directory sized)
 799  *      bmap blocks for the new directory block
 800  *      allocation btrees
 801  */
 802 #define XFS_CALC_ADDAFORK_LOG_RES(mp)   \
 803         ((mp)->m_sb.sb_inodesize + \
 804          (mp)->m_sb.sb_sectsize * 2 + \
 805          (mp)->m_dirblksize + \
 806          XFS_FSB_TO_B(mp, (XFS_DAENTER_BMAP1B(mp, XFS_DATA_FORK) + 1)) + \
 807          XFS_ALLOCFREE_LOG_RES(mp, 1) + \
 808          (128 * (4 + (XFS_DAENTER_BMAP1B(mp, XFS_DATA_FORK) + 1) + \
 809                  XFS_ALLOCFREE_LOG_COUNT(mp, 1))))
 810
 811 #define XFS_ADDAFORK_LOG_RES(mp)        ((mp)->m_reservations.tr_addafork)
 812
 813 /*
 814  * Removing the attribute fork of a file
 815  *    the inode being truncated: inode size
 816  *    the inode\'s bmap btree: max depth * block size
 817  * And the bmap_finish transaction can free the blocks and bmap blocks:
 818  *    the agf for each of the ags: 4 * sector size
 819  *    the agfl for each of the ags: 4 * sector size
 820  *    the super block to reflect the freed blocks: sector size
 821  *    worst case split in allocation btrees per extent assuming 4 extents:
 822  *              4 exts * 2 trees * (2 * max depth - 1) * block size
 823  */
 824 #define XFS_CALC_ATTRINVAL_LOG_RES(mp)  \
 825         (MAX( \
 826          ((mp)->m_sb.sb_inodesize + \
 827           XFS_FSB_TO_B((mp), XFS_BM_MAXLEVELS(mp, XFS_ATTR_FORK)) + \
 828           (128 * (1 + XFS_BM_MAXLEVELS(mp, XFS_ATTR_FORK)))), \
 829          ((4 * (mp)->m_sb.sb_sectsize) + \
 830           (4 * (mp)->m_sb.sb_sectsize) + \
 831           (mp)->m_sb.sb_sectsize + \
 832           XFS_ALLOCFREE_LOG_RES(mp, 4) + \
 833           (128 * (9 + XFS_ALLOCFREE_LOG_COUNT(mp, 4))))))
 834
 835 #define XFS_ATTRINVAL_LOG_RES(mp)       ((mp)->m_reservations.tr_attrinval)
 836
 837 /*
 838  * Setting an attribute.
 839  *      the inode getting the attribute
 840  *      the superblock for allocations
 841  *      the agfs extents are allocated from
 842  *      the attribute btree * max depth
 843  *      the inode allocation btree
 844  * Since attribute transaction space is dependent on the size of the attribute,
 845  * the calculation is done partially at mount time and partially at runtime.
 846  */
 847 #define XFS_CALC_ATTRSET_LOG_RES(mp)    \
 848         ((mp)->m_sb.sb_inodesize + \
 849          (mp)->m_sb.sb_sectsize + \
 850           XFS_FSB_TO_B((mp), XFS_DA_NODE_MAXDEPTH) + \
 851           (128 * (2 + XFS_DA_NODE_MAXDEPTH)))
 852
 853 #define XFS_ATTRSET_LOG_RES(mp, ext)    \
 854         ((mp)->m_reservations.tr_attrset + \
 855          (ext * (mp)->m_sb.sb_sectsize) + \
 856          (ext * XFS_FSB_TO_B((mp), XFS_BM_MAXLEVELS(mp, XFS_ATTR_FORK))) + \
 857          (128 * (ext + (ext * XFS_BM_MAXLEVELS(mp, XFS_ATTR_FORK)))))
 858
 859 /*
 860  * Removing an attribute.
 861  *    the inode: inode size
 862  *    the attribute btree could join: max depth * block size
 863  *    the inode bmap btree could join or split: max depth * block size
 864  * And the bmap_finish transaction can free the attr blocks freed giving:
 865  *    the agf for the ag in which the blocks live: 2 * sector size
 866  *    the agfl for the ag in which the blocks live: 2 * sector size
 867  *    the superblock for the free block count: sector size
 868  *    the allocation btrees: 2 exts * 2 trees * (2 * max depth - 1) * block size
 869  */
 870 #define XFS_CALC_ATTRRM_LOG_RES(mp)     \
 871         (MAX( \
 872           ((mp)->m_sb.sb_inodesize + \
 873           XFS_FSB_TO_B((mp), XFS_DA_NODE_MAXDEPTH) + \
 874           XFS_FSB_TO_B((mp), XFS_BM_MAXLEVELS(mp, XFS_ATTR_FORK)) + \
 875           (128 * (1 + XFS_DA_NODE_MAXDEPTH + XFS_BM_MAXLEVELS(mp, XFS_DATA_FORK)))), \
 876          ((2 * (mp)->m_sb.sb_sectsize) + \
 877           (2 * (mp)->m_sb.sb_sectsize) + \
 878           (mp)->m_sb.sb_sectsize + \
 879           XFS_ALLOCFREE_LOG_RES(mp, 2) + \
 880           (128 * (5 + XFS_ALLOCFREE_LOG_COUNT(mp, 2))))))
 881
 882 #define XFS_ATTRRM_LOG_RES(mp)  ((mp)->m_reservations.tr_attrrm)
 883
 884 /*
 885  * Clearing a bad agino number in an agi hash bucket.
 886  */
 887 #define XFS_CALC_CLEAR_AGI_BUCKET_LOG_RES(mp) \
 888         ((mp)->m_sb.sb_sectsize + 128)
 889
 890 #define XFS_CLEAR_AGI_BUCKET_LOG_RES(mp)  ((mp)->m_reservations.tr_clearagi)
 891
 892
 893 /*
 894  * Various log count values.
 895  */
 896 #define XFS_DEFAULT_LOG_COUNT           1
 897 #define XFS_DEFAULT_PERM_LOG_COUNT      2
 898 #define XFS_ITRUNCATE_LOG_COUNT         2
 899 #define XFS_INACTIVE_LOG_COUNT          2
 900 #define XFS_CREATE_LOG_COUNT            2
 901 #define XFS_MKDIR_LOG_COUNT             3
 902 #define XFS_SYMLINK_LOG_COUNT           3
 903 #define XFS_REMOVE_LOG_COUNT            2
 904 #define XFS_LINK_LOG_COUNT              2
 905 #define XFS_RENAME_LOG_COUNT            2
 906 #define XFS_WRITE_LOG_COUNT             2
 907 #define XFS_ADDAFORK_LOG_COUNT          2
 908 #define XFS_ATTRINVAL_LOG_COUNT         1
 909 #define XFS_ATTRSET_LOG_COUNT           3
 910 #define XFS_ATTRRM_LOG_COUNT            3
 911
 912 /*
 913  * Here we centralize the specification of XFS meta-data buffer
 914  * reference count values.  This determine how hard the buffer
 915  * cache tries to hold onto the buffer.
 916  */
 917 #define XFS_AGF_REF             4
 918 #define XFS_AGI_REF             4
 919 #define XFS_AGFL_REF            3
 920 #define XFS_INO_BTREE_REF       3
 921 #define XFS_ALLOC_BTREE_REF     2
 922 #define XFS_BMAP_BTREE_REF      2
 923 #define XFS_DIR_BTREE_REF       2
 924 #define XFS_ATTR_BTREE_REF      1
 925 #define XFS_INO_REF             1
 926 #define XFS_DQUOT_REF           1
 927
 928 #ifdef __KERNEL__
 929 /*
 930  * XFS transaction mechanism exported interfaces that are
 931  * actually macros.
 932  */
 933 #define xfs_trans_get_log_res(tp)       ((tp)->t_log_res)
 934 #define xfs_trans_get_log_count(tp)     ((tp)->t_log_count)
 935 #define xfs_trans_get_block_res(tp)     ((tp)->t_blk_res)
 936 #define xfs_trans_set_sync(tp)          ((tp)->t_flags |= XFS_TRANS_SYNC)
 937
 938 #ifdef DEBUG
 939 #define xfs_trans_agblocks_delta(tp, d) ((tp)->t_ag_freeblks_delta += (long)d)
 940 #define xfs_trans_agflist_delta(tp, d)  ((tp)->t_ag_flist_delta += (long)d)
 941 #define xfs_trans_agbtree_delta(tp, d)  ((tp)->t_ag_btree_delta += (long)d)
 942 #else
 943 #define xfs_trans_agblocks_delta(tp, d)
 944 #define xfs_trans_agflist_delta(tp, d)
 945 #define xfs_trans_agbtree_delta(tp, d)
 946 #endif
 947
 948 /*
 949  * XFS transaction mechanism exported interfaces.
 950  */
 951 void            xfs_trans_init(struct xfs_mount *);
 952 xfs_trans_t     *xfs_trans_alloc(struct xfs_mount *, uint);
 953 xfs_trans_t     *_xfs_trans_alloc(struct xfs_mount *, uint);
 954 xfs_trans_t     *xfs_trans_dup(xfs_trans_t *);
 955 int             xfs_trans_reserve(xfs_trans_t *, uint, uint, uint,
 956                                   uint, uint);
 957 void            xfs_trans_mod_sb(xfs_trans_t *, uint, long);
 958 struct xfs_buf  *xfs_trans_get_buf(xfs_trans_t *, struct xfs_buftarg *, xfs_daddr_t,
 959                                    int, uint);
 960 int             xfs_trans_read_buf(struct xfs_mount *, xfs_trans_t *,
 961                                    struct xfs_buftarg *, xfs_daddr_t, int, uint,
 962                                    struct xfs_buf **);
 963 struct xfs_buf  *xfs_trans_getsb(xfs_trans_t *, struct xfs_mount *, int);
 964
 965 void            xfs_trans_brelse(xfs_trans_t *, struct xfs_buf *);
 966 void            xfs_trans_bjoin(xfs_trans_t *, struct xfs_buf *);
 967 void            xfs_trans_bhold(xfs_trans_t *, struct xfs_buf *);
 968 void            xfs_trans_bhold_release(xfs_trans_t *, struct xfs_buf *);
 969 void            xfs_trans_binval(xfs_trans_t *, struct xfs_buf *);
 970 void            xfs_trans_inode_buf(xfs_trans_t *, struct xfs_buf *);
 971 void            xfs_trans_stale_inode_buf(xfs_trans_t *, struct xfs_buf *);
 972 void            xfs_trans_dquot_buf(xfs_trans_t *, struct xfs_buf *, uint);
 973 void            xfs_trans_inode_alloc_buf(xfs_trans_t *, struct xfs_buf *);
 974 int             xfs_trans_iget(struct xfs_mount *, xfs_trans_t *,
 975                                xfs_ino_t , uint, uint, struct xfs_inode **);
 976 void            xfs_trans_ijoin(xfs_trans_t *, struct xfs_inode *, uint);
 977 void            xfs_trans_ihold(xfs_trans_t *, struct xfs_inode *);
 978 void            xfs_trans_log_buf(xfs_trans_t *, struct xfs_buf *, uint, uint);
 979 void            xfs_trans_log_inode(xfs_trans_t *, struct xfs_inode *, uint);
 980 struct xfs_efi_log_item *xfs_trans_get_efi(xfs_trans_t *, uint);
 981 void            xfs_efi_release(struct xfs_efi_log_item *, uint);
 982 void            xfs_trans_log_efi_extent(xfs_trans_t *,
 983                                          struct xfs_efi_log_item *,
 984                                          xfs_fsblock_t,
 985                                          xfs_extlen_t);
 986 struct xfs_efd_log_item *xfs_trans_get_efd(xfs_trans_t *,
 987                                   struct xfs_efi_log_item *,
 988                                   uint);
 989 void            xfs_trans_log_efd_extent(xfs_trans_t *,
 990                                          struct xfs_efd_log_item *,
 991                                          xfs_fsblock_t,
 992                                          xfs_extlen_t);
 993 int             _xfs_trans_commit(xfs_trans_t *,
 994                                   uint flags,
 995                                   xfs_lsn_t *,
 996                                   int *);
 997 #define xfs_trans_commit(tp, flags, lsn) \
 998         _xfs_trans_commit(tp, flags, lsn, NULL)
 999 void            xfs_trans_cancel(xfs_trans_t *, int);
1000 void            xfs_trans_ail_init(struct xfs_mount *);
1001 xfs_lsn_t       xfs_trans_push_ail(struct xfs_mount *, xfs_lsn_t);
1002 xfs_lsn_t       xfs_trans_tail_ail(struct xfs_mount *);
1003 void            xfs_trans_unlocked_item(struct xfs_mount *,
1004                                         xfs_log_item_t *);
1005 xfs_log_busy_slot_t *xfs_trans_add_busy(xfs_trans_t *tp,
1006                                         xfs_agnumber_t ag,
1007                                         xfs_extlen_t idx);
1008
1009 #endif  /* __KERNEL__ */
1010
1011 #endif  /* __XFS_TRANS_H__ */