include/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_SB_COUNT              41
 102 #define XFS_TRANS_TYPE_MAX              41
 103 /* new transaction types need to be reflected in xfs_logprint(8) */
 104
 105
 106 #ifdef __KERNEL__
 107 struct xfs_buf;
 108 struct xfs_buftarg;
 109 struct xfs_efd_log_item;
 110 struct xfs_efi_log_item;
 111 struct xfs_inode;
 112 struct xfs_item_ops;
 113 struct xfs_log_iovec;
 114 struct xfs_log_item;
 115 struct xfs_log_item_desc;
 116 struct xfs_mount;
 117 struct xfs_trans;
 118 struct xfs_dquot_acct;
 119
 120 typedef struct xfs_ail_entry {
 121         struct xfs_log_item     *ail_forw;      /* AIL forw pointer */
 122         struct xfs_log_item     *ail_back;      /* AIL back pointer */
 123 } xfs_ail_entry_t;
 124
 125 typedef struct xfs_log_item {
 126         xfs_ail_entry_t                 li_ail;         /* AIL pointers */
 127         xfs_lsn_t                       li_lsn;         /* last on-disk lsn */
 128         struct xfs_log_item_desc        *li_desc;       /* ptr to current desc*/
 129         struct xfs_mount                *li_mountp;     /* ptr to fs mount */
 130         uint                            li_type;        /* item type */
 131         uint                            li_flags;       /* misc flags */
 132         struct xfs_log_item             *li_bio_list;   /* buffer item list */
 133         void                            (*li_cb)(struct xfs_buf *,
 134                                                  struct xfs_log_item *);
 135                                                         /* buffer item iodone */
 136                                                         /* callback func */
 137         struct xfs_item_ops             *li_ops;        /* function list */
 138 } xfs_log_item_t;
 139
 140 #define XFS_LI_IN_AIL   0x1
 141 #define XFS_LI_ABORTED  0x2
 142
 143 typedef struct xfs_item_ops {
 144         uint (*iop_size)(xfs_log_item_t *);
 145         void (*iop_format)(xfs_log_item_t *, struct xfs_log_iovec *);
 146         void (*iop_pin)(xfs_log_item_t *);
 147         void (*iop_unpin)(xfs_log_item_t *, int);
 148         void (*iop_unpin_remove)(xfs_log_item_t *, struct xfs_trans *);
 149         uint (*iop_trylock)(xfs_log_item_t *);
 150         void (*iop_unlock)(xfs_log_item_t *);
 151         xfs_lsn_t (*iop_committed)(xfs_log_item_t *, xfs_lsn_t);
 152         void (*iop_push)(xfs_log_item_t *);
 153         void (*iop_abort)(xfs_log_item_t *);
 154         void (*iop_pushbuf)(xfs_log_item_t *);
 155         void (*iop_committing)(xfs_log_item_t *, xfs_lsn_t);
 156 } xfs_item_ops_t;
 157
 158 #define IOP_SIZE(ip)            (*(ip)->li_ops->iop_size)(ip)
 159 #define IOP_FORMAT(ip,vp)       (*(ip)->li_ops->iop_format)(ip, vp)
 160 #define IOP_PIN(ip)             (*(ip)->li_ops->iop_pin)(ip)
 161 #define IOP_UNPIN(ip, flags)    (*(ip)->li_ops->iop_unpin)(ip, flags)
 162 #define IOP_UNPIN_REMOVE(ip,tp) (*(ip)->li_ops->iop_unpin_remove)(ip, tp)
 163 #define IOP_TRYLOCK(ip)         (*(ip)->li_ops->iop_trylock)(ip)
 164 #define IOP_UNLOCK(ip)          (*(ip)->li_ops->iop_unlock)(ip)
 165 #define IOP_COMMITTED(ip, lsn)  (*(ip)->li_ops->iop_committed)(ip, lsn)
 166 #define IOP_PUSH(ip)            (*(ip)->li_ops->iop_push)(ip)
 167 #define IOP_ABORT(ip)           (*(ip)->li_ops->iop_abort)(ip)
 168 #define IOP_PUSHBUF(ip)         (*(ip)->li_ops->iop_pushbuf)(ip)
 169 #define IOP_COMMITTING(ip, lsn) (*(ip)->li_ops->iop_committing)(ip, lsn)
 170
 171 /*
 172  * Return values for the IOP_TRYLOCK() routines.
 173  */
 174 #define XFS_ITEM_SUCCESS        0
 175 #define XFS_ITEM_PINNED         1
 176 #define XFS_ITEM_LOCKED         2
 177 #define XFS_ITEM_FLUSHING       3
 178 #define XFS_ITEM_PUSHBUF        4
 179
 180 #endif  /* __KERNEL__ */
 181
 182 /*
 183  * This structure is used to track log items associated with
 184  * a transaction.  It points to the log item and keeps some
 185  * flags to track the state of the log item.  It also tracks
 186  * the amount of space needed to log the item it describes
 187  * once we get to commit processing (see xfs_trans_commit()).
 188  */
 189 typedef struct xfs_log_item_desc {
 190         xfs_log_item_t  *lid_item;
 191         ushort          lid_size;
 192         unsigned char   lid_flags;
 193         unsigned char   lid_index;
 194 } xfs_log_item_desc_t;
 195
 196 #define XFS_LID_DIRTY           0x1
 197 #define XFS_LID_PINNED          0x2
 198 #define XFS_LID_BUF_STALE       0x8
 199
 200 /*
 201  * This structure is used to maintain a chunk list of log_item_desc
 202  * structures. The free field is a bitmask indicating which descriptors
 203  * in this chunk's array are free.  The unused field is the first value
 204  * not used since this chunk was allocated.
 205  */
 206 #define XFS_LIC_NUM_SLOTS       15
 207 typedef struct xfs_log_item_chunk {
 208         struct xfs_log_item_chunk       *lic_next;
 209         ushort                          lic_free;
 210         ushort                          lic_unused;
 211         xfs_log_item_desc_t             lic_descs[XFS_LIC_NUM_SLOTS];
 212 } xfs_log_item_chunk_t;
 213
 214 #define XFS_LIC_MAX_SLOT        (XFS_LIC_NUM_SLOTS - 1)
 215 #define XFS_LIC_FREEMASK        ((1 << XFS_LIC_NUM_SLOTS) - 1)
 216
 217
 218 /*
 219  * Initialize the given chunk.  Set the chunk's free descriptor mask
 220  * to indicate that all descriptors are free.  The caller gets to set
 221  * lic_unused to the right value (0 matches all free).  The
 222  * lic_descs.lid_index values are set up as each desc is allocated.
 223  */
 224 #define XFS_LIC_INIT(cp)        xfs_lic_init(cp)
 225 static inline void xfs_lic_init(xfs_log_item_chunk_t *cp)
 226 {
 227         cp->lic_free = XFS_LIC_FREEMASK;
 228 }
 229
 230 #define XFS_LIC_INIT_SLOT(cp,slot)      xfs_lic_init_slot(cp, slot)
 231 static inline void xfs_lic_init_slot(xfs_log_item_chunk_t *cp, int slot)
 232 {
 233         cp->lic_descs[slot].lid_index = (unsigned char)(slot);
 234 }
 235
 236 #define XFS_LIC_VACANCY(cp)             xfs_lic_vacancy(cp)
 237 static inline int xfs_lic_vacancy(xfs_log_item_chunk_t *cp)
 238 {
 239         return cp->lic_free & XFS_LIC_FREEMASK;
 240 }
 241
 242 #define XFS_LIC_ALL_FREE(cp)            xfs_lic_all_free(cp)
 243 static inline void xfs_lic_all_free(xfs_log_item_chunk_t *cp)
 244 {
 245         cp->lic_free = XFS_LIC_FREEMASK;
 246 }
 247
 248 #define XFS_LIC_ARE_ALL_FREE(cp)        xfs_lic_are_all_free(cp)
 249 static inline int xfs_lic_are_all_free(xfs_log_item_chunk_t *cp)
 250 {
 251         return ((cp->lic_free & XFS_LIC_FREEMASK) == XFS_LIC_FREEMASK);
 252 }
 253
 254 #define XFS_LIC_ISFREE(cp,slot) xfs_lic_isfree(cp,slot)
 255 static inline int xfs_lic_isfree(xfs_log_item_chunk_t *cp, int slot)
 256 {
 257         return (cp->lic_free & (1 << slot));
 258 }
 259
 260 #define XFS_LIC_CLAIM(cp,slot)          xfs_lic_claim(cp,slot)
 261 static inline void xfs_lic_claim(xfs_log_item_chunk_t *cp, int slot)
 262 {
 263         cp->lic_free &= ~(1 << slot);
 264 }
 265
 266 #define XFS_LIC_RELSE(cp,slot)          xfs_lic_relse(cp,slot)
 267 static inline void xfs_lic_relse(xfs_log_item_chunk_t *cp, int slot)
 268 {
 269         cp->lic_free |= 1 << slot;
 270 }
 271
 272 #define XFS_LIC_SLOT(cp,slot)           xfs_lic_slot(cp,slot)
 273 static inline xfs_log_item_desc_t *
 274 xfs_lic_slot(xfs_log_item_chunk_t *cp, int slot)
 275 {
 276         return &(cp->lic_descs[slot]);
 277 }
 278
 279 #define XFS_LIC_DESC_TO_SLOT(dp)        xfs_lic_desc_to_slot(dp)
 280 static inline int xfs_lic_desc_to_slot(xfs_log_item_desc_t *dp)
 281 {
 282         return (uint)dp->lid_index;
 283 }
 284
 285 /*
 286  * Calculate the address of a chunk given a descriptor pointer:
 287  * dp - dp->lid_index give the address of the start of the lic_descs array.
 288  * From this we subtract the offset of the lic_descs field in a chunk.
 289  * All of this yields the address of the chunk, which is
 290  * cast to a chunk pointer.
 291  */
 292 #define XFS_LIC_DESC_TO_CHUNK(dp)       xfs_lic_desc_to_chunk(dp)
 293 static inline xfs_log_item_chunk_t *
 294 xfs_lic_desc_to_chunk(xfs_log_item_desc_t *dp)
 295 {
 296         return (xfs_log_item_chunk_t*) \
 297                 (((xfs_caddr_t)((dp) - (dp)->lid_index)) - \
 298                 (xfs_caddr_t)(((xfs_log_item_chunk_t*)0)->lic_descs));
 299 }
 300
 301 #ifdef __KERNEL__
 302 /*
 303  * This structure is used to maintain a list of block ranges that have been
 304  * freed in the transaction.  The ranges are listed in the perag[] busy list
 305  * between when they're freed and the transaction is committed to disk.
 306  */
 307
 308 typedef struct xfs_log_busy_slot {
 309         xfs_agnumber_t          lbc_ag;
 310         ushort                  lbc_idx;        /* index in perag.busy[] */
 311 } xfs_log_busy_slot_t;
 312
 313 #define XFS_LBC_NUM_SLOTS       31
 314 typedef struct xfs_log_busy_chunk {
 315         struct xfs_log_busy_chunk       *lbc_next;
 316         uint                            lbc_free;       /* free slots bitmask */
 317         ushort                          lbc_unused;     /* first unused */
 318         xfs_log_busy_slot_t             lbc_busy[XFS_LBC_NUM_SLOTS];
 319 } xfs_log_busy_chunk_t;
 320
 321 #define XFS_LBC_MAX_SLOT        (XFS_LBC_NUM_SLOTS - 1)
 322 #define XFS_LBC_FREEMASK        ((1U << XFS_LBC_NUM_SLOTS) - 1)
 323
 324 #define XFS_LBC_INIT(cp)        ((cp)->lbc_free = XFS_LBC_FREEMASK)
 325 #define XFS_LBC_CLAIM(cp, slot) ((cp)->lbc_free &= ~(1 << (slot)))
 326 #define XFS_LBC_SLOT(cp, slot)  (&((cp)->lbc_busy[(slot)]))
 327 #define XFS_LBC_VACANCY(cp)     (((cp)->lbc_free) & XFS_LBC_FREEMASK)
 328 #define XFS_LBC_ISFREE(cp, slot) ((cp)->lbc_free & (1 << (slot)))
 329
 330 /*
 331  * This is the type of function which can be given to xfs_trans_callback()
 332  * to be called upon the transaction's commit to disk.
 333  */
 334 typedef void (*xfs_trans_callback_t)(struct xfs_trans *, void *);
 335
 336 /*
 337  * This is the structure maintained for every active transaction.
 338  */
 339 typedef struct xfs_trans {
 340         unsigned int            t_magic;        /* magic number */
 341         xfs_log_callback_t      t_logcb;        /* log callback struct */
 342         struct xfs_trans        *t_forw;        /* async list pointers */
 343         struct xfs_trans        *t_back;        /* async list pointers */
 344         unsigned int            t_type;         /* transaction type */
 345         unsigned int            t_log_res;      /* amt of log space resvd */
 346         unsigned int            t_log_count;    /* count for perm log res */
 347         unsigned int            t_blk_res;      /* # of blocks resvd */
 348         unsigned int            t_blk_res_used; /* # of resvd blocks used */
 349         unsigned int            t_rtx_res;      /* # of rt extents resvd */
 350         unsigned int            t_rtx_res_used; /* # of resvd rt extents used */
 351         xfs_log_ticket_t        t_ticket;       /* log mgr ticket */
 352         sema_t                  t_sema;         /* sema for commit completion */
 353         xfs_lsn_t               t_lsn;          /* log seq num of start of
 354                                                  * transaction. */
 355         xfs_lsn_t               t_commit_lsn;   /* log seq num of end of
 356                                                  * transaction. */
 357         struct xfs_mount        *t_mountp;      /* ptr to fs mount struct */
 358         struct xfs_dquot_acct   *t_dqinfo;      /* accting info for dquots */
 359         xfs_trans_callback_t    t_callback;     /* transaction callback */
 360         void                    *t_callarg;     /* callback arg */
 361         unsigned int            t_flags;        /* misc flags */
 362         long                    t_icount_delta; /* superblock icount change */
 363         long                    t_ifree_delta;  /* superblock ifree change */
 364         long                    t_fdblocks_delta; /* superblock fdblocks chg */
 365         long                    t_res_fdblocks_delta; /* on-disk only chg */
 366         long                    t_frextents_delta;/* superblock freextents chg*/
 367         long                    t_res_frextents_delta; /* on-disk only chg */
 368         long                    t_ag_freeblks_delta; /* debugging counter */
 369         long                    t_ag_flist_delta; /* debugging counter */
 370         long                    t_ag_btree_delta; /* debugging counter */
 371         long                    t_dblocks_delta;/* superblock dblocks change */
 372         long                    t_agcount_delta;/* superblock agcount change */
 373         long                    t_imaxpct_delta;/* superblock imaxpct change */
 374         long                    t_rextsize_delta;/* superblock rextsize chg */
 375         long                    t_rbmblocks_delta;/* superblock rbmblocks chg */
 376         long                    t_rblocks_delta;/* superblock rblocks change */
 377         long                    t_rextents_delta;/* superblocks rextents chg */
 378         long                    t_rextslog_delta;/* superblocks rextslog chg */
 379         unsigned int            t_items_free;   /* log item descs free */
 380         xfs_log_item_chunk_t    t_items;        /* first log item desc chunk */
 381         xfs_trans_header_t      t_header;       /* header for in-log trans */
 382         unsigned int            t_busy_free;    /* busy descs free */
 383         xfs_log_busy_chunk_t    t_busy;         /* busy/async free blocks */
 384         xfs_pflags_t            t_pflags;       /* saved pflags state */
 385 } xfs_trans_t;
 386
 387 #endif  /* __KERNEL__ */
 388
 389
 390 #define XFS_TRANS_MAGIC         0x5452414E      /* 'TRAN' */
 391 /*
 392  * Values for t_flags.
 393  */
 394 #define XFS_TRANS_DIRTY         0x01    /* something needs to be logged */
 395 #define XFS_TRANS_SB_DIRTY      0x02    /* superblock is modified */
 396 #define XFS_TRANS_PERM_LOG_RES  0x04    /* xact took a permanent log res */
 397 #define XFS_TRANS_SYNC          0x08    /* make commit synchronous */
 398 #define XFS_TRANS_DQ_DIRTY      0x10    /* at least one dquot in trx dirty */
 399 #define XFS_TRANS_RESERVE       0x20    /* OK to use reserved data blocks */
 400
 401 /*
 402  * Values for call flags parameter.
 403  */
 404 #define XFS_TRANS_NOSLEEP               0x1
 405 #define XFS_TRANS_WAIT                  0x2
 406 #define XFS_TRANS_RELEASE_LOG_RES       0x4
 407 #define XFS_TRANS_ABORT                 0x8
 408
 409 /*
 410  * Field values for xfs_trans_mod_sb.
 411  */
 412 #define XFS_TRANS_SB_ICOUNT             0x00000001
 413 #define XFS_TRANS_SB_IFREE              0x00000002
 414 #define XFS_TRANS_SB_FDBLOCKS           0x00000004
 415 #define XFS_TRANS_SB_RES_FDBLOCKS       0x00000008
 416 #define XFS_TRANS_SB_FREXTENTS          0x00000010
 417 #define XFS_TRANS_SB_RES_FREXTENTS      0x00000020
 418 #define XFS_TRANS_SB_DBLOCKS            0x00000040
 419 #define XFS_TRANS_SB_AGCOUNT            0x00000080
 420 #define XFS_TRANS_SB_IMAXPCT            0x00000100
 421 #define XFS_TRANS_SB_REXTSIZE           0x00000200
 422 #define XFS_TRANS_SB_RBMBLOCKS          0x00000400
 423 #define XFS_TRANS_SB_RBLOCKS            0x00000800
 424 #define XFS_TRANS_SB_REXTENTS           0x00001000
 425 #define XFS_TRANS_SB_REXTSLOG           0x00002000
 426
 427
 428 /*
 429  * Various log reservation values.
 430  * These are based on the size of the file system block
 431  * because that is what most transactions manipulate.
 432  * Each adds in an additional 128 bytes per item logged to
 433  * try to account for the overhead of the transaction mechanism.
 434  *
 435  * Note:
 436  * Most of the reservations underestimate the number of allocation
 437  * groups into which they could free extents in the xfs_bmap_finish()
 438  * call.  This is because the number in the worst case is quite high
 439  * and quite unusual.  In order to fix this we need to change
 440  * xfs_bmap_finish() to free extents in only a single AG at a time.
 441  * This will require changes to the EFI code as well, however, so that
 442  * the EFI for the extents not freed is logged again in each transaction.
 443  * See bug 261917.
 444  */
 445
 446 /*
 447  * Per-extent log reservation for the allocation btree changes
 448  * involved in freeing or allocating an extent.
 449  * 2 trees * (2 blocks/level * max depth - 1) * block size
 450  */
 451 #define XFS_ALLOCFREE_LOG_RES(mp,nx) \
 452         ((nx) * (2 * XFS_FSB_TO_B((mp), 2 * XFS_AG_MAXLEVELS(mp) - 1)))
 453 #define XFS_ALLOCFREE_LOG_COUNT(mp,nx) \
 454         ((nx) * (2 * (2 * XFS_AG_MAXLEVELS(mp) - 1)))
 455
 456 /*
 457  * Per-directory log reservation for any directory change.
 458  * dir blocks: (1 btree block per level + data block + free block) * dblock size
 459  * bmap btree: (levels + 2) * max depth * block size
 460  * v2 directory blocks can be fragmented below the dirblksize down to the fsb
 461  * size, so account for that in the DAENTER macros.
 462  */
 463 #define XFS_DIROP_LOG_RES(mp)   \
 464         (XFS_FSB_TO_B(mp, XFS_DAENTER_BLOCKS(mp, XFS_DATA_FORK)) + \
 465          (XFS_FSB_TO_B(mp, XFS_DAENTER_BMAPS(mp, XFS_DATA_FORK) + 1)))
 466 #define XFS_DIROP_LOG_COUNT(mp) \
 467         (XFS_DAENTER_BLOCKS(mp, XFS_DATA_FORK) + \
 468          XFS_DAENTER_BMAPS(mp, XFS_DATA_FORK) + 1)
 469
 470 /*
 471  * In a write transaction we can allocate a maximum of 2
 472  * extents.  This gives:
 473  *    the inode getting the new extents: inode size
 474  *    the inode\'s bmap btree: max depth * block size
 475  *    the agfs of the ags from which the extents are allocated: 2 * sector
 476  *    the superblock free block counter: sector size
 477  *    the allocation btrees: 2 exts * 2 trees * (2 * max depth - 1) * block size
 478  * And the bmap_finish transaction can free bmap blocks in a join:
 479  *    the agfs of the ags containing the blocks: 2 * sector size
 480  *    the agfls of the ags containing the blocks: 2 * sector size
 481  *    the super block free block counter: sector size
 482  *    the allocation btrees: 2 exts * 2 trees * (2 * max depth - 1) * block size
 483  */
 484 #define XFS_CALC_WRITE_LOG_RES(mp) \
 485         (MAX( \
 486          ((mp)->m_sb.sb_inodesize + \
 487           XFS_FSB_TO_B((mp), XFS_BM_MAXLEVELS(mp, XFS_DATA_FORK)) + \
 488           (2 * (mp)->m_sb.sb_sectsize) + \
 489           (mp)->m_sb.sb_sectsize + \
 490           XFS_ALLOCFREE_LOG_RES(mp, 2) + \
 491           (128 * (4 + XFS_BM_MAXLEVELS(mp, XFS_DATA_FORK) + XFS_ALLOCFREE_LOG_COUNT(mp, 2)))),\
 492          ((2 * (mp)->m_sb.sb_sectsize) + \
 493           (2 * (mp)->m_sb.sb_sectsize) + \
 494           (mp)->m_sb.sb_sectsize + \
 495           XFS_ALLOCFREE_LOG_RES(mp, 2) + \
 496           (128 * (5 + XFS_ALLOCFREE_LOG_COUNT(mp, 2))))))
 497
 498 #define XFS_WRITE_LOG_RES(mp)   ((mp)->m_reservations.tr_write)
 499
 500 /*
 501  * In truncating a file we free up to two extents at once.  We can modify:
 502  *    the inode being truncated: inode size
 503  *    the inode\'s bmap btree: (max depth + 1) * block size
 504  * And the bmap_finish transaction can free the blocks and bmap blocks:
 505  *    the agf for each of the ags: 4 * sector size
 506  *    the agfl for each of the ags: 4 * sector size
 507  *    the super block to reflect the freed blocks: sector size
 508  *    worst case split in allocation btrees per extent assuming 4 extents:
 509  *              4 exts * 2 trees * (2 * max depth - 1) * block size
 510  *    the inode btree: max depth * blocksize
 511  *    the allocation btrees: 2 trees * (max depth - 1) * block size
 512  */
 513 #define XFS_CALC_ITRUNCATE_LOG_RES(mp) \
 514         (MAX( \
 515          ((mp)->m_sb.sb_inodesize + \
 516           XFS_FSB_TO_B((mp), XFS_BM_MAXLEVELS(mp, XFS_DATA_FORK) + 1) + \
 517           (128 * (2 + XFS_BM_MAXLEVELS(mp, XFS_DATA_FORK)))), \
 518          ((4 * (mp)->m_sb.sb_sectsize) + \
 519           (4 * (mp)->m_sb.sb_sectsize) + \
 520           (mp)->m_sb.sb_sectsize + \
 521           XFS_ALLOCFREE_LOG_RES(mp, 4) + \
 522           (128 * (9 + XFS_ALLOCFREE_LOG_COUNT(mp, 4))) + \
 523           (128 * 5) + \
 524           XFS_ALLOCFREE_LOG_RES(mp, 1) + \
 525            (128 * (2 + XFS_IALLOC_BLOCKS(mp) + XFS_IN_MAXLEVELS(mp) + \
 526             XFS_ALLOCFREE_LOG_COUNT(mp, 1))))))
 527
 528 #define XFS_ITRUNCATE_LOG_RES(mp)   ((mp)->m_reservations.tr_itruncate)
 529
 530 /*
 531  * In renaming a files we can modify:
 532  *    the four inodes involved: 4 * inode size
 533  *    the two directory btrees: 2 * (max depth + v2) * dir block size
 534  *    the two directory bmap btrees: 2 * max depth * block size
 535  * And the bmap_finish transaction can free dir and bmap blocks (two sets
 536  *      of bmap blocks) giving:
 537  *    the agf for the ags in which the blocks live: 3 * sector size
 538  *    the agfl for the ags in which the blocks live: 3 * sector size
 539  *    the superblock for the free block count: sector size
 540  *    the allocation btrees: 3 exts * 2 trees * (2 * max depth - 1) * block size
 541  */
 542 #define XFS_CALC_RENAME_LOG_RES(mp) \
 543         (MAX( \
 544          ((4 * (mp)->m_sb.sb_inodesize) + \
 545           (2 * XFS_DIROP_LOG_RES(mp)) + \
 546           (128 * (4 + 2 * XFS_DIROP_LOG_COUNT(mp)))), \
 547          ((3 * (mp)->m_sb.sb_sectsize) + \
 548           (3 * (mp)->m_sb.sb_sectsize) + \
 549           (mp)->m_sb.sb_sectsize + \
 550           XFS_ALLOCFREE_LOG_RES(mp, 3) + \
 551           (128 * (7 + XFS_ALLOCFREE_LOG_COUNT(mp, 3))))))
 552
 553 #define XFS_RENAME_LOG_RES(mp)  ((mp)->m_reservations.tr_rename)
 554
 555 /*
 556  * For creating a link to an inode:
 557  *    the parent directory inode: inode size
 558  *    the linked inode: inode size
 559  *    the directory btree could split: (max depth + v2) * dir block size
 560  *    the directory bmap btree could join or split: (max depth + v2) * blocksize
 561  * And the bmap_finish transaction can free some bmap blocks giving:
 562  *    the agf for the ag in which the blocks live: sector size
 563  *    the agfl for the ag in which the blocks live: sector size
 564  *    the superblock for the free block count: sector size
 565  *    the allocation btrees: 2 trees * (2 * max depth - 1) * block size
 566  */
 567 #define XFS_CALC_LINK_LOG_RES(mp) \
 568         (MAX( \
 569          ((mp)->m_sb.sb_inodesize + \
 570           (mp)->m_sb.sb_inodesize + \
 571           XFS_DIROP_LOG_RES(mp) + \
 572           (128 * (2 + XFS_DIROP_LOG_COUNT(mp)))), \
 573          ((mp)->m_sb.sb_sectsize + \
 574           (mp)->m_sb.sb_sectsize + \
 575           (mp)->m_sb.sb_sectsize + \
 576           XFS_ALLOCFREE_LOG_RES(mp, 1) + \
 577           (128 * (3 + XFS_ALLOCFREE_LOG_COUNT(mp, 1))))))
 578
 579 #define XFS_LINK_LOG_RES(mp)    ((mp)->m_reservations.tr_link)
 580
 581 /*
 582  * For removing a directory entry we can modify:
 583  *    the parent directory inode: inode size
 584  *    the removed inode: inode size
 585  *    the directory btree could join: (max depth + v2) * dir block size
 586  *    the directory bmap btree could join or split: (max depth + v2) * blocksize
 587  * And the bmap_finish transaction can free the dir and bmap blocks giving:
 588  *    the agf for the ag in which the blocks live: 2 * sector size
 589  *    the agfl for the ag in which the blocks live: 2 * sector size
 590  *    the superblock for the free block count: sector size
 591  *    the allocation btrees: 2 exts * 2 trees * (2 * max depth - 1) * block size
 592  */
 593 #define XFS_CALC_REMOVE_LOG_RES(mp)     \
 594         (MAX( \
 595          ((mp)->m_sb.sb_inodesize + \
 596           (mp)->m_sb.sb_inodesize + \
 597           XFS_DIROP_LOG_RES(mp) + \
 598           (128 * (2 + XFS_DIROP_LOG_COUNT(mp)))), \
 599          ((2 * (mp)->m_sb.sb_sectsize) + \
 600           (2 * (mp)->m_sb.sb_sectsize) + \
 601           (mp)->m_sb.sb_sectsize + \
 602           XFS_ALLOCFREE_LOG_RES(mp, 2) + \
 603           (128 * (5 + XFS_ALLOCFREE_LOG_COUNT(mp, 2))))))
 604
 605 #define XFS_REMOVE_LOG_RES(mp)  ((mp)->m_reservations.tr_remove)
 606
 607 /*
 608  * For symlink we can modify:
 609  *    the parent directory inode: inode size
 610  *    the new inode: inode size
 611  *    the inode btree entry: 1 block
 612  *    the directory btree: (max depth + v2) * dir block size
 613  *    the directory inode\'s bmap btree: (max depth + v2) * block size
 614  *    the blocks for the symlink: 1 KB
 615  * Or in the first xact we allocate some inodes giving:
 616  *    the agi and agf of the ag getting the new inodes: 2 * sectorsize
 617  *    the inode blocks allocated: XFS_IALLOC_BLOCKS * blocksize
 618  *    the inode btree: max depth * blocksize
 619  *    the allocation btrees: 2 trees * (2 * max depth - 1) * block size
 620  */
 621 #define XFS_CALC_SYMLINK_LOG_RES(mp)            \
 622         (MAX( \
 623          ((mp)->m_sb.sb_inodesize + \
 624           (mp)->m_sb.sb_inodesize + \
 625           XFS_FSB_TO_B(mp, 1) + \
 626           XFS_DIROP_LOG_RES(mp) + \
 627           1024 + \
 628           (128 * (4 + XFS_DIROP_LOG_COUNT(mp)))), \
 629          (2 * (mp)->m_sb.sb_sectsize + \
 630           XFS_FSB_TO_B((mp), XFS_IALLOC_BLOCKS((mp))) + \
 631           XFS_FSB_TO_B((mp), XFS_IN_MAXLEVELS(mp)) + \
 632           XFS_ALLOCFREE_LOG_RES(mp, 1) + \
 633           (128 * (2 + XFS_IALLOC_BLOCKS(mp) + XFS_IN_MAXLEVELS(mp) + \
 634            XFS_ALLOCFREE_LOG_COUNT(mp, 1))))))
 635
 636 #define XFS_SYMLINK_LOG_RES(mp) ((mp)->m_reservations.tr_symlink)
 637
 638 /*
 639  * For create we can modify:
 640  *    the parent directory inode: inode size
 641  *    the new inode: inode size
 642  *    the inode btree entry: block size
 643  *    the superblock for the nlink flag: sector size
 644  *    the directory btree: (max depth + v2) * dir block size
 645  *    the directory inode\'s bmap btree: (max depth + v2) * block size
 646  * Or in the first xact we allocate some inodes giving:
 647  *    the agi and agf of the ag getting the new inodes: 2 * sectorsize
 648  *    the superblock for the nlink flag: sector size
 649  *    the inode blocks allocated: XFS_IALLOC_BLOCKS * blocksize
 650  *    the inode btree: max depth * blocksize
 651  *    the allocation btrees: 2 trees * (max depth - 1) * block size
 652  */
 653 #define XFS_CALC_CREATE_LOG_RES(mp)             \
 654         (MAX( \
 655          ((mp)->m_sb.sb_inodesize + \
 656           (mp)->m_sb.sb_inodesize + \
 657           (mp)->m_sb.sb_sectsize + \
 658           XFS_FSB_TO_B(mp, 1) + \
 659           XFS_DIROP_LOG_RES(mp) + \
 660           (128 * (3 + XFS_DIROP_LOG_COUNT(mp)))), \
 661          (3 * (mp)->m_sb.sb_sectsize + \
 662           XFS_FSB_TO_B((mp), XFS_IALLOC_BLOCKS((mp))) + \
 663           XFS_FSB_TO_B((mp), XFS_IN_MAXLEVELS(mp)) + \
 664           XFS_ALLOCFREE_LOG_RES(mp, 1) + \
 665           (128 * (2 + XFS_IALLOC_BLOCKS(mp) + XFS_IN_MAXLEVELS(mp) + \
 666            XFS_ALLOCFREE_LOG_COUNT(mp, 1))))))
 667
 668 #define XFS_CREATE_LOG_RES(mp)  ((mp)->m_reservations.tr_create)
 669
 670 /*
 671  * Making a new directory is the same as creating a new file.
 672  */
 673 #define XFS_CALC_MKDIR_LOG_RES(mp)      XFS_CALC_CREATE_LOG_RES(mp)
 674
 675 #define XFS_MKDIR_LOG_RES(mp)   ((mp)->m_reservations.tr_mkdir)
 676
 677 /*
 678  * In freeing an inode we can modify:
 679  *    the inode being freed: inode size
 680  *    the super block free inode counter: sector size
 681  *    the agi hash list and counters: sector size
 682  *    the inode btree entry: block size
 683  *    the on disk inode before ours in the agi hash list: inode cluster size
 684  *    the inode btree: max depth * blocksize
 685  *    the allocation btrees: 2 trees * (max depth - 1) * block size
 686  */
 687 #define XFS_CALC_IFREE_LOG_RES(mp) \
 688         ((mp)->m_sb.sb_inodesize + \
 689          (mp)->m_sb.sb_sectsize + \
 690          (mp)->m_sb.sb_sectsize + \
 691          XFS_FSB_TO_B((mp), 1) + \
 692          MAX((__uint16_t)XFS_FSB_TO_B((mp), 1), XFS_INODE_CLUSTER_SIZE(mp)) + \
 693          (128 * 5) + \
 694           XFS_ALLOCFREE_LOG_RES(mp, 1) + \
 695           (128 * (2 + XFS_IALLOC_BLOCKS(mp) + XFS_IN_MAXLEVELS(mp) + \
 696            XFS_ALLOCFREE_LOG_COUNT(mp, 1))))
 697
 698
 699 #define XFS_IFREE_LOG_RES(mp)   ((mp)->m_reservations.tr_ifree)
 700
 701 /*
 702  * When only changing the inode we log the inode and possibly the superblock
 703  * We also add a bit of slop for the transaction stuff.
 704  */
 705 #define XFS_CALC_ICHANGE_LOG_RES(mp)    ((mp)->m_sb.sb_inodesize + \
 706                                          (mp)->m_sb.sb_sectsize + 512)
 707
 708 #define XFS_ICHANGE_LOG_RES(mp) ((mp)->m_reservations.tr_ichange)
 709
 710 /*
 711  * Growing the data section of the filesystem.
 712  *      superblock
 713  *      agi and agf
 714  *      allocation btrees
 715  */
 716 #define XFS_CALC_GROWDATA_LOG_RES(mp) \
 717         ((mp)->m_sb.sb_sectsize * 3 + \
 718          XFS_ALLOCFREE_LOG_RES(mp, 1) + \
 719          (128 * (3 + XFS_ALLOCFREE_LOG_COUNT(mp, 1))))
 720
 721 #define XFS_GROWDATA_LOG_RES(mp)    ((mp)->m_reservations.tr_growdata)
 722
 723 /*
 724  * Growing the rt section of the filesystem.
 725  * In the first set of transactions (ALLOC) we allocate space to the
 726  * bitmap or summary files.
 727  *      superblock: sector size
 728  *      agf of the ag from which the extent is allocated: sector size
 729  *      bmap btree for bitmap/summary inode: max depth * blocksize
 730  *      bitmap/summary inode: inode size
 731  *      allocation btrees for 1 block alloc: 2 * (2 * maxdepth - 1) * blocksize
 732  */
 733 #define XFS_CALC_GROWRTALLOC_LOG_RES(mp) \
 734         (2 * (mp)->m_sb.sb_sectsize + \
 735          XFS_FSB_TO_B((mp), XFS_BM_MAXLEVELS(mp, XFS_DATA_FORK)) + \
 736          (mp)->m_sb.sb_inodesize + \
 737          XFS_ALLOCFREE_LOG_RES(mp, 1) + \
 738          (128 * \
 739           (3 + XFS_BM_MAXLEVELS(mp, XFS_DATA_FORK) + \
 740            XFS_ALLOCFREE_LOG_COUNT(mp, 1))))
 741
 742 #define XFS_GROWRTALLOC_LOG_RES(mp)     ((mp)->m_reservations.tr_growrtalloc)
 743
 744 /*
 745  * Growing the rt section of the filesystem.
 746  * In the second set of transactions (ZERO) we zero the new metadata blocks.
 747  *      one bitmap/summary block: blocksize
 748  */
 749 #define XFS_CALC_GROWRTZERO_LOG_RES(mp) \
 750         ((mp)->m_sb.sb_blocksize + 128)
 751
 752 #define XFS_GROWRTZERO_LOG_RES(mp)      ((mp)->m_reservations.tr_growrtzero)
 753
 754 /*
 755  * Growing the rt section of the filesystem.
 756  * In the third set of transactions (FREE) we update metadata without
 757  * allocating any new blocks.
 758  *      superblock: sector size
 759  *      bitmap inode: inode size
 760  *      summary inode: inode size
 761  *      one bitmap block: blocksize
 762  *      summary blocks: new summary size
 763  */
 764 #define XFS_CALC_GROWRTFREE_LOG_RES(mp) \
 765         ((mp)->m_sb.sb_sectsize + \
 766          2 * (mp)->m_sb.sb_inodesize + \
 767          (mp)->m_sb.sb_blocksize + \
 768          (mp)->m_rsumsize + \
 769          (128 * 5))
 770
 771 #define XFS_GROWRTFREE_LOG_RES(mp)      ((mp)->m_reservations.tr_growrtfree)
 772
 773 /*
 774  * Logging the inode modification timestamp on a synchronous write.
 775  *      inode
 776  */
 777 #define XFS_CALC_SWRITE_LOG_RES(mp) \
 778         ((mp)->m_sb.sb_inodesize + 128)
 779
 780 #define XFS_SWRITE_LOG_RES(mp)  ((mp)->m_reservations.tr_swrite)
 781
 782 /*
 783  * Logging the inode timestamps on an fsync -- same as SWRITE
 784  * as long as SWRITE logs the entire inode core
 785  */
 786 #define XFS_FSYNC_TS_LOG_RES(mp)        ((mp)->m_reservations.tr_swrite)
 787
 788 /*
 789  * Logging the inode mode bits when writing a setuid/setgid file
 790  *      inode
 791  */
 792 #define XFS_CALC_WRITEID_LOG_RES(mp) \
 793         ((mp)->m_sb.sb_inodesize + 128)
 794
 795 #define XFS_WRITEID_LOG_RES(mp) ((mp)->m_reservations.tr_swrite)
 796
 797 /*
 798  * Converting the inode from non-attributed to attributed.
 799  *      the inode being converted: inode size
 800  *      agf block and superblock (for block allocation)
 801  *      the new block (directory sized)
 802  *      bmap blocks for the new directory block
 803  *      allocation btrees
 804  */
 805 #define XFS_CALC_ADDAFORK_LOG_RES(mp)   \
 806         ((mp)->m_sb.sb_inodesize + \
 807          (mp)->m_sb.sb_sectsize * 2 + \
 808          (mp)->m_dirblksize + \
 809          (XFS_DIR_IS_V1(mp) ? 0 : \
 810             XFS_FSB_TO_B(mp, (XFS_DAENTER_BMAP1B(mp, XFS_DATA_FORK) + 1))) + \
 811          XFS_ALLOCFREE_LOG_RES(mp, 1) + \
 812          (128 * (4 + \
 813                  (XFS_DIR_IS_V1(mp) ? 0 : \
 814                          XFS_DAENTER_BMAP1B(mp, XFS_DATA_FORK) + 1) + \
 815                  XFS_ALLOCFREE_LOG_COUNT(mp, 1))))
 816
 817 #define XFS_ADDAFORK_LOG_RES(mp)        ((mp)->m_reservations.tr_addafork)
 818
 819 /*
 820  * Removing the attribute fork of a file
 821  *    the inode being truncated: inode size
 822  *    the inode\'s bmap btree: max depth * block size
 823  * And the bmap_finish transaction can free the blocks and bmap blocks:
 824  *    the agf for each of the ags: 4 * sector size
 825  *    the agfl for each of the ags: 4 * sector size
 826  *    the super block to reflect the freed blocks: sector size
 827  *    worst case split in allocation btrees per extent assuming 4 extents:
 828  *              4 exts * 2 trees * (2 * max depth - 1) * block size
 829  */
 830 #define XFS_CALC_ATTRINVAL_LOG_RES(mp)  \
 831         (MAX( \
 832          ((mp)->m_sb.sb_inodesize + \
 833           XFS_FSB_TO_B((mp), XFS_BM_MAXLEVELS(mp, XFS_ATTR_FORK)) + \
 834           (128 * (1 + XFS_BM_MAXLEVELS(mp, XFS_ATTR_FORK)))), \
 835          ((4 * (mp)->m_sb.sb_sectsize) + \
 836           (4 * (mp)->m_sb.sb_sectsize) + \
 837           (mp)->m_sb.sb_sectsize + \
 838           XFS_ALLOCFREE_LOG_RES(mp, 4) + \
 839           (128 * (9 + XFS_ALLOCFREE_LOG_COUNT(mp, 4))))))
 840
 841 #define XFS_ATTRINVAL_LOG_RES(mp)       ((mp)->m_reservations.tr_attrinval)
 842
 843 /*
 844  * Setting an attribute.
 845  *      the inode getting the attribute
 846  *      the superblock for allocations
 847  *      the agfs extents are allocated from
 848  *      the attribute btree * max depth
 849  *      the inode allocation btree
 850  * Since attribute transaction space is dependent on the size of the attribute,
 851  * the calculation is done partially at mount time and partially at runtime.
 852  */
 853 #define XFS_CALC_ATTRSET_LOG_RES(mp)    \
 854         ((mp)->m_sb.sb_inodesize + \
 855          (mp)->m_sb.sb_sectsize + \
 856           XFS_FSB_TO_B((mp), XFS_DA_NODE_MAXDEPTH) + \
 857           (128 * (2 + XFS_DA_NODE_MAXDEPTH)))
 858
 859 #define XFS_ATTRSET_LOG_RES(mp, ext)    \
 860         ((mp)->m_reservations.tr_attrset + \
 861          (ext * (mp)->m_sb.sb_sectsize) + \
 862          (ext * XFS_FSB_TO_B((mp), XFS_BM_MAXLEVELS(mp, XFS_ATTR_FORK))) + \
 863          (128 * (ext + (ext * XFS_BM_MAXLEVELS(mp, XFS_ATTR_FORK)))))
 864
 865 /*
 866  * Removing an attribute.
 867  *    the inode: inode size
 868  *    the attribute btree could join: max depth * block size
 869  *    the inode bmap btree could join or split: max depth * block size
 870  * And the bmap_finish transaction can free the attr blocks freed giving:
 871  *    the agf for the ag in which the blocks live: 2 * sector size
 872  *    the agfl for the ag in which the blocks live: 2 * sector size
 873  *    the superblock for the free block count: sector size
 874  *    the allocation btrees: 2 exts * 2 trees * (2 * max depth - 1) * block size
 875  */
 876 #define XFS_CALC_ATTRRM_LOG_RES(mp)     \
 877         (MAX( \
 878           ((mp)->m_sb.sb_inodesize + \
 879           XFS_FSB_TO_B((mp), XFS_DA_NODE_MAXDEPTH) + \
 880           XFS_FSB_TO_B((mp), XFS_BM_MAXLEVELS(mp, XFS_ATTR_FORK)) + \
 881           (128 * (1 + XFS_DA_NODE_MAXDEPTH + XFS_BM_MAXLEVELS(mp, XFS_DATA_FORK)))), \
 882          ((2 * (mp)->m_sb.sb_sectsize) + \
 883           (2 * (mp)->m_sb.sb_sectsize) + \
 884           (mp)->m_sb.sb_sectsize + \
 885           XFS_ALLOCFREE_LOG_RES(mp, 2) + \
 886           (128 * (5 + XFS_ALLOCFREE_LOG_COUNT(mp, 2))))))
 887
 888 #define XFS_ATTRRM_LOG_RES(mp)  ((mp)->m_reservations.tr_attrrm)
 889
 890 /*
 891  * Clearing a bad agino number in an agi hash bucket.
 892  */
 893 #define XFS_CALC_CLEAR_AGI_BUCKET_LOG_RES(mp) \
 894         ((mp)->m_sb.sb_sectsize + 128)
 895
 896 #define XFS_CLEAR_AGI_BUCKET_LOG_RES(mp)  ((mp)->m_reservations.tr_clearagi)
 897
 898
 899 /*
 900  * Various log count values.
 901  */
 902 #define XFS_DEFAULT_LOG_COUNT           1
 903 #define XFS_DEFAULT_PERM_LOG_COUNT      2
 904 #define XFS_ITRUNCATE_LOG_COUNT         2
 905 #define XFS_INACTIVE_LOG_COUNT          2
 906 #define XFS_CREATE_LOG_COUNT            2
 907 #define XFS_MKDIR_LOG_COUNT             3
 908 #define XFS_SYMLINK_LOG_COUNT           3
 909 #define XFS_REMOVE_LOG_COUNT            2
 910 #define XFS_LINK_LOG_COUNT              2
 911 #define XFS_RENAME_LOG_COUNT            2
 912 #define XFS_WRITE_LOG_COUNT             2
 913 #define XFS_ADDAFORK_LOG_COUNT          2
 914 #define XFS_ATTRINVAL_LOG_COUNT         1
 915 #define XFS_ATTRSET_LOG_COUNT           3
 916 #define XFS_ATTRRM_LOG_COUNT            3
 917
 918 /*
 919  * Here we centralize the specification of XFS meta-data buffer
 920  * reference count values.  This determine how hard the buffer
 921  * cache tries to hold onto the buffer.
 922  */
 923 #define XFS_AGF_REF             4
 924 #define XFS_AGI_REF             4
 925 #define XFS_AGFL_REF            3
 926 #define XFS_INO_BTREE_REF       3
 927 #define XFS_ALLOC_BTREE_REF     2
 928 #define XFS_BMAP_BTREE_REF      2
 929 #define XFS_DIR_BTREE_REF       2
 930 #define XFS_ATTR_BTREE_REF      1
 931 #define XFS_INO_REF             1
 932 #define XFS_DQUOT_REF           1
 933
 934 #ifdef __KERNEL__
 935 /*
 936  * XFS transaction mechanism exported interfaces that are
 937  * actually macros.
 938  */
 939 #define xfs_trans_get_log_res(tp)       ((tp)->t_log_res)
 940 #define xfs_trans_get_log_count(tp)     ((tp)->t_log_count)
 941 #define xfs_trans_get_block_res(tp)     ((tp)->t_blk_res)
 942 #define xfs_trans_set_sync(tp)          ((tp)->t_flags |= XFS_TRANS_SYNC)
 943
 944 #ifdef DEBUG
 945 #define xfs_trans_agblocks_delta(tp, d) ((tp)->t_ag_freeblks_delta += (long)d)
 946 #define xfs_trans_agflist_delta(tp, d)  ((tp)->t_ag_flist_delta += (long)d)
 947 #define xfs_trans_agbtree_delta(tp, d)  ((tp)->t_ag_btree_delta += (long)d)
 948 #else
 949 #define xfs_trans_agblocks_delta(tp, d)
 950 #define xfs_trans_agflist_delta(tp, d)
 951 #define xfs_trans_agbtree_delta(tp, d)
 952 #endif
 953
 954 /*
 955  * XFS transaction mechanism exported interfaces.
 956  */
 957 void            xfs_trans_init(struct xfs_mount *);
 958 xfs_trans_t     *xfs_trans_alloc(struct xfs_mount *, uint);
 959 xfs_trans_t     *_xfs_trans_alloc(struct xfs_mount *, uint);
 960 xfs_trans_t     *xfs_trans_dup(xfs_trans_t *);
 961 int             xfs_trans_reserve(xfs_trans_t *, uint, uint, uint,
 962                                   uint, uint);
 963 void            xfs_trans_mod_sb(xfs_trans_t *, uint, long);
 964 struct xfs_buf  *xfs_trans_get_buf(xfs_trans_t *, struct xfs_buftarg *, xfs_daddr_t,
 965                                    int, uint);
 966 int             xfs_trans_read_buf(struct xfs_mount *, xfs_trans_t *,
 967                                    struct xfs_buftarg *, xfs_daddr_t, int, uint,
 968                                    struct xfs_buf **);
 969 struct xfs_buf  *xfs_trans_getsb(xfs_trans_t *, struct xfs_mount *, int);
 970
 971 void            xfs_trans_brelse(xfs_trans_t *, struct xfs_buf *);
 972 void            xfs_trans_bjoin(xfs_trans_t *, struct xfs_buf *);
 973 void            xfs_trans_bhold(xfs_trans_t *, struct xfs_buf *);
 974 void            xfs_trans_bhold_release(xfs_trans_t *, struct xfs_buf *);
 975 void            xfs_trans_binval(xfs_trans_t *, struct xfs_buf *);
 976 void            xfs_trans_inode_buf(xfs_trans_t *, struct xfs_buf *);
 977 void            xfs_trans_stale_inode_buf(xfs_trans_t *, struct xfs_buf *);
 978 void            xfs_trans_dquot_buf(xfs_trans_t *, struct xfs_buf *, uint);
 979 void            xfs_trans_inode_alloc_buf(xfs_trans_t *, struct xfs_buf *);
 980 int             xfs_trans_iget(struct xfs_mount *, xfs_trans_t *,
 981                                xfs_ino_t , uint, uint, struct xfs_inode **);
 982 void            xfs_trans_ijoin(xfs_trans_t *, struct xfs_inode *, uint);
 983 void            xfs_trans_ihold(xfs_trans_t *, struct xfs_inode *);
 984 void            xfs_trans_log_buf(xfs_trans_t *, struct xfs_buf *, uint, uint);
 985 void            xfs_trans_log_inode(xfs_trans_t *, struct xfs_inode *, uint);
 986 struct xfs_efi_log_item *xfs_trans_get_efi(xfs_trans_t *, uint);
 987 void            xfs_efi_release(struct xfs_efi_log_item *, uint);
 988 void            xfs_trans_log_efi_extent(xfs_trans_t *,
 989                                          struct xfs_efi_log_item *,
 990                                          xfs_fsblock_t,
 991                                          xfs_extlen_t);
 992 struct xfs_efd_log_item *xfs_trans_get_efd(xfs_trans_t *,
 993                                   struct xfs_efi_log_item *,
 994                                   uint);
 995 void            xfs_trans_log_efd_extent(xfs_trans_t *,
 996                                          struct xfs_efd_log_item *,
 997                                          xfs_fsblock_t,
 998                                          xfs_extlen_t);
 999 int             _xfs_trans_commit(xfs_trans_t *,
1000                                   uint flags,
1001                                   xfs_lsn_t *,
1002                                   int *);
1003 #define xfs_trans_commit(tp, flags, lsn) \
1004         _xfs_trans_commit(tp, flags, lsn, NULL)
1005 void            xfs_trans_cancel(xfs_trans_t *, int);
1006 void            xfs_trans_ail_init(struct xfs_mount *);
1007 xfs_lsn_t       xfs_trans_push_ail(struct xfs_mount *, xfs_lsn_t);
1008 xfs_lsn_t       xfs_trans_tail_ail(struct xfs_mount *);
1009 void            xfs_trans_unlocked_item(struct xfs_mount *,
1010                                         xfs_log_item_t *);
1011 xfs_log_busy_slot_t *xfs_trans_add_busy(xfs_trans_t *tp,
1012                                         xfs_agnumber_t ag,
1013                                         xfs_extlen_t idx);
1014
1015 #endif  /* __KERNEL__ */
1016
1017 #endif  /* __XFS_TRANS_H__ */