include/xfs_trans.h

   1 /*
   2  * Copyright (c) 2000-2002 Silicon Graphics, Inc.  All Rights Reserved.
   3  *
   4  * This program is free software; you can redistribute it and/or modify it
   5  * under the terms of version 2 of the GNU General Public License as
   6  * published by the Free Software Foundation.
   7  *
   8  * This program is distributed in the hope that it would be useful, but
   9  * WITHOUT ANY WARRANTY; without even the implied warranty of
  10  * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.
  11  *
  12  * Further, this software is distributed without any warranty that it is
  13  * free of the rightful claim of any third person regarding infringement
  14  * or the like.  Any license provided herein, whether implied or
  15  * otherwise, applies only to this software file.  Patent licenses, if
  16  * any, provided herein do not apply to combinations of this program with
  17  * other software, or any other product whatsoever.
  18  *
  19  * You should have received a copy of the GNU General Public License along
  20  * with this program; if not, write the Free Software Foundation, Inc., 59
  21  * Temple Place - Suite 330, Boston MA 02111-1307, USA.
  22  *
  23  * Contact information: Silicon Graphics, Inc., 1600 Amphitheatre Pkwy,
  24  * Mountain View, CA  94043, or:
  25  *
  26  * http://www.sgi.com
  27  *
  28  * For further information regarding this notice, see:
  29  *
  30  * http://oss.sgi.com/projects/GenInfo/SGIGPLNoticeExplan/
  31  */
  32 #ifndef __XFS_TRANS_H__
  33 #define __XFS_TRANS_H__
  34
  35 /*
  36  * This is the structure written in the log at the head of
  37  * every transaction. It identifies the type and id of the
  38  * transaction, and contains the number of items logged by
  39  * the transaction so we know how many to expect during recovery.
  40  *
  41  * Do not change the below structure without redoing the code in
  42  * xlog_recover_add_to_trans() and xlog_recover_add_to_cont_trans().
  43  */
  44 typedef struct xfs_trans_header {
  45         uint            th_magic;               /* magic number */
  46         uint            th_type;                /* transaction type */
  47         __int32_t       th_tid;                 /* transaction id (unused) */
  48         uint            th_num_items;           /* num items logged by trans */
  49 } xfs_trans_header_t;
  50
  51 #define XFS_TRANS_HEADER_MAGIC  0x5452414e      /* TRAN */
  52
  53 /*
  54  * Log item types.
  55  */
  56 #define XFS_LI_5_3_BUF          0x1234  /* v1 bufs, 1-block inode buffers */
  57 #define XFS_LI_5_3_INODE        0x1235  /* 1-block inode buffers */
  58 #define XFS_LI_EFI              0x1236
  59 #define XFS_LI_EFD              0x1237
  60 #define XFS_LI_IUNLINK          0x1238
  61 #define XFS_LI_6_1_INODE        0x1239  /* 4K non-aligned inode bufs */
  62 #define XFS_LI_6_1_BUF          0x123a  /* v1, 4K inode buffers */
  63 #define XFS_LI_INODE            0x123b  /* aligned ino chunks, var-size ibufs */
  64 #define XFS_LI_BUF              0x123c  /* v2 bufs, variable sized inode bufs */
  65 #define XFS_LI_DQUOT            0x123d
  66 #define XFS_LI_QUOTAOFF         0x123e
  67
  68 /*
  69  * Transaction types.  Used to distinguish types of buffers.
  70  */
  71 #define XFS_TRANS_SETATTR_NOT_SIZE      1
  72 #define XFS_TRANS_SETATTR_SIZE          2
  73 #define XFS_TRANS_INACTIVE              3
  74 #define XFS_TRANS_CREATE                4
  75 #define XFS_TRANS_CREATE_TRUNC          5
  76 #define XFS_TRANS_TRUNCATE_FILE         6
  77 #define XFS_TRANS_REMOVE                7
  78 #define XFS_TRANS_LINK                  8
  79 #define XFS_TRANS_RENAME                9
  80 #define XFS_TRANS_MKDIR                 10
  81 #define XFS_TRANS_RMDIR                 11
  82 #define XFS_TRANS_SYMLINK               12
  83 #define XFS_TRANS_SET_DMATTRS           13
  84 #define XFS_TRANS_GROWFS                14
  85 #define XFS_TRANS_STRAT_WRITE           15
  86 #define XFS_TRANS_DIOSTRAT              16
  87 #define XFS_TRANS_WRITE_SYNC            17
  88 #define XFS_TRANS_WRITEID               18
  89 #define XFS_TRANS_ADDAFORK              19
  90 #define XFS_TRANS_ATTRINVAL             20
  91 #define XFS_TRANS_ATRUNCATE             21
  92 #define XFS_TRANS_ATTR_SET              22
  93 #define XFS_TRANS_ATTR_RM               23
  94 #define XFS_TRANS_ATTR_FLAG             24
  95 #define XFS_TRANS_CLEAR_AGI_BUCKET      25
  96 #define XFS_TRANS_QM_SBCHANGE           26
  97 /*
  98  * Dummy entries since we use the transaction type to index into the
  99  * trans_type[] in xlog_recover_print_trans_head()
 100  */
 101 #define XFS_TRANS_DUMMY1                27
 102 #define XFS_TRANS_DUMMY2                28
 103 #define XFS_TRANS_QM_QUOTAOFF           29
 104 #define XFS_TRANS_QM_DQALLOC            30
 105 #define XFS_TRANS_QM_SETQLIM            31
 106 #define XFS_TRANS_QM_DQCLUSTER          32
 107 #define XFS_TRANS_QM_QINOCREATE         33
 108 #define XFS_TRANS_QM_QUOTAOFF_END       34
 109 #define XFS_TRANS_SB_UNIT               35
 110 #define XFS_TRANS_FSYNC_TS              36
 111 #define XFS_TRANS_GROWFSRT_ALLOC        37
 112 #define XFS_TRANS_GROWFSRT_ZERO         38
 113 #define XFS_TRANS_GROWFSRT_FREE         39
 114 #define XFS_TRANS_SWAPEXT               40
 115 /* new transaction types need to be reflected in xfs_logprint(8) */
 116
 117
 118 #ifdef __KERNEL__
 119 struct xfs_buf;
 120 struct xfs_buftarg;
 121 struct xfs_efd_log_item;
 122 struct xfs_efi_log_item;
 123 struct xfs_inode;
 124 struct xfs_item_ops;
 125 struct xfs_log_iovec;
 126 struct xfs_log_item;
 127 struct xfs_log_item_desc;
 128 struct xfs_mount;
 129 struct xfs_trans;
 130 struct xfs_dquot_acct;
 131
 132 typedef struct xfs_ail_entry {
 133         struct xfs_log_item     *ail_forw;      /* AIL forw pointer */
 134         struct xfs_log_item     *ail_back;      /* AIL back pointer */
 135 } xfs_ail_entry_t;
 136
 137 /*
 138  * This structure is passed as a parameter to xfs_trans_push_ail()
 139  * and is used to track the what LSN the waiting processes are
 140  * waiting to become unused.
 141  */
 142 typedef struct xfs_ail_ticket {
 143         xfs_lsn_t               at_lsn;         /* lsn waitin for */
 144         struct xfs_ail_ticket   *at_forw;       /* wait list ptr */
 145         struct xfs_ail_ticket   *at_back;       /* wait list ptr */
 146         sv_t                    at_sema;        /* wait sema */
 147 } xfs_ail_ticket_t;
 148
 149
 150 typedef struct xfs_log_item {
 151         xfs_ail_entry_t                 li_ail;         /* AIL pointers */
 152         xfs_lsn_t                       li_lsn;         /* last on-disk lsn */
 153         struct xfs_log_item_desc        *li_desc;       /* ptr to current desc*/
 154         struct xfs_mount                *li_mountp;     /* ptr to fs mount */
 155         uint                            li_type;        /* item type */
 156         uint                            li_flags;       /* misc flags */
 157         struct xfs_log_item             *li_bio_list;   /* buffer item list */
 158         void                            (*li_cb)(struct xfs_buf *,
 159                                                  struct xfs_log_item *);
 160                                                         /* buffer item iodone */
 161                                                         /* callback func */
 162         struct xfs_item_ops             *li_ops;        /* function list */
 163 } xfs_log_item_t;
 164
 165 #define XFS_LI_IN_AIL   0x1
 166 #define XFS_LI_ABORTED  0x2
 167
 168 typedef struct xfs_item_ops {
 169         uint (*iop_size)(xfs_log_item_t *);
 170         void (*iop_format)(xfs_log_item_t *, struct xfs_log_iovec *);
 171         void (*iop_pin)(xfs_log_item_t *);
 172         void (*iop_unpin)(xfs_log_item_t *, int);
 173         void (*iop_unpin_remove)(xfs_log_item_t *, struct xfs_trans *);
 174         uint (*iop_trylock)(xfs_log_item_t *);
 175         void (*iop_unlock)(xfs_log_item_t *);
 176         xfs_lsn_t (*iop_committed)(xfs_log_item_t *, xfs_lsn_t);
 177         void (*iop_push)(xfs_log_item_t *);
 178         void (*iop_abort)(xfs_log_item_t *);
 179         void (*iop_pushbuf)(xfs_log_item_t *);
 180         void (*iop_committing)(xfs_log_item_t *, xfs_lsn_t);
 181 } xfs_item_ops_t;
 182
 183 #define IOP_SIZE(ip)            (*(ip)->li_ops->iop_size)(ip)
 184 #define IOP_FORMAT(ip,vp)       (*(ip)->li_ops->iop_format)(ip, vp)
 185 #define IOP_PIN(ip)             (*(ip)->li_ops->iop_pin)(ip)
 186 #define IOP_UNPIN(ip, flags)    (*(ip)->li_ops->iop_unpin)(ip, flags)
 187 #define IOP_UNPIN_REMOVE(ip,tp) (*(ip)->li_ops->iop_unpin_remove)(ip, tp)
 188 #define IOP_TRYLOCK(ip)         (*(ip)->li_ops->iop_trylock)(ip)
 189 #define IOP_UNLOCK(ip)          (*(ip)->li_ops->iop_unlock)(ip)
 190 #define IOP_COMMITTED(ip, lsn)  (*(ip)->li_ops->iop_committed)(ip, lsn)
 191 #define IOP_PUSH(ip)            (*(ip)->li_ops->iop_push)(ip)
 192 #define IOP_ABORT(ip)           (*(ip)->li_ops->iop_abort)(ip)
 193 #define IOP_PUSHBUF(ip)         (*(ip)->li_ops->iop_pushbuf)(ip)
 194 #define IOP_COMMITTING(ip, lsn) (*(ip)->li_ops->iop_committing)(ip, lsn)
 195
 196 /*
 197  * Return values for the IOP_TRYLOCK() routines.
 198  */
 199 #define XFS_ITEM_SUCCESS        0
 200 #define XFS_ITEM_PINNED         1
 201 #define XFS_ITEM_LOCKED         2
 202 #define XFS_ITEM_FLUSHING       3
 203 #define XFS_ITEM_PUSHBUF        4
 204
 205 #endif  /* __KERNEL__ */
 206
 207 /*
 208  * This structure is used to track log items associated with
 209  * a transaction.  It points to the log item and keeps some
 210  * flags to track the state of the log item.  It also tracks
 211  * the amount of space needed to log the item it describes
 212  * once we get to commit processing (see xfs_trans_commit()).
 213  */
 214 typedef struct xfs_log_item_desc {
 215         xfs_log_item_t  *lid_item;
 216         ushort          lid_size;
 217         unsigned char   lid_flags;
 218         unsigned char   lid_index;
 219 } xfs_log_item_desc_t;
 220
 221 #define XFS_LID_DIRTY           0x1
 222 #define XFS_LID_PINNED          0x2
 223 #define XFS_LID_SYNC_UNLOCK     0x4
 224 #define XFS_LID_BUF_STALE       0x8
 225
 226 /*
 227  * This structure is used to maintain a chunk list of log_item_desc
 228  * structures. The free field is a bitmask indicating which descriptors
 229  * in this chunk's array are free.  The unused field is the first value
 230  * not used since this chunk was allocated.
 231  */
 232 #define XFS_LIC_NUM_SLOTS       15
 233 typedef struct xfs_log_item_chunk {
 234         struct xfs_log_item_chunk       *lic_next;
 235         ushort                          lic_free;
 236         ushort                          lic_unused;
 237         xfs_log_item_desc_t             lic_descs[XFS_LIC_NUM_SLOTS];
 238 } xfs_log_item_chunk_t;
 239
 240 #define XFS_LIC_MAX_SLOT        (XFS_LIC_NUM_SLOTS - 1)
 241 #define XFS_LIC_FREEMASK        ((1 << XFS_LIC_NUM_SLOTS) - 1)
 242
 243
 244 /*
 245  * Initialize the given chunk.  Set the chunk's free descriptor mask
 246  * to indicate that all descriptors are free.  The caller gets to set
 247  * lic_unused to the right value (0 matches all free).  The
 248  * lic_descs.lid_index values are set up as each desc is allocated.
 249  */
 250 #if XFS_WANT_FUNCS || (XFS_WANT_SPACE && XFSSO_XFS_LIC_INIT)
 251 void xfs_lic_init(xfs_log_item_chunk_t *cp);
 252 #define XFS_LIC_INIT(cp)        xfs_lic_init(cp)
 253 #else
 254 #define XFS_LIC_INIT(cp)        ((cp)->lic_free = XFS_LIC_FREEMASK)
 255 #endif
 256 #if XFS_WANT_FUNCS || (XFS_WANT_SPACE && XFSSO_XFS_LIC_INIT_SLOT)
 257 void xfs_lic_init_slot(xfs_log_item_chunk_t *cp, int slot);
 258 #define XFS_LIC_INIT_SLOT(cp,slot)      xfs_lic_init_slot(cp, slot)
 259 #else
 260 #define XFS_LIC_INIT_SLOT(cp,slot)      \
 261         ((cp)->lic_descs[slot].lid_index = (unsigned char)(slot))
 262 #endif
 263 #if XFS_WANT_FUNCS || (XFS_WANT_SPACE && XFSSO_XFS_LIC_VACANCY)
 264 int xfs_lic_vacancy(xfs_log_item_chunk_t *cp);
 265 #define XFS_LIC_VACANCY(cp)             xfs_lic_vacancy(cp)
 266 #else
 267 #define XFS_LIC_VACANCY(cp)             (((cp)->lic_free) & XFS_LIC_FREEMASK)
 268 #endif
 269 #if XFS_WANT_FUNCS || (XFS_WANT_SPACE && XFSSO_XFS_LIC_ALL_FREE)
 270 void xfs_lic_all_free(xfs_log_item_chunk_t *cp);
 271 #define XFS_LIC_ALL_FREE(cp)            xfs_lic_all_free(cp)
 272 #else
 273 #define XFS_LIC_ALL_FREE(cp)            ((cp)->lic_free = XFS_LIC_FREEMASK)
 274 #endif
 275 #if XFS_WANT_FUNCS || (XFS_WANT_SPACE && XFSSO_XFS_LIC_ARE_ALL_FREE)
 276 int xfs_lic_are_all_free(xfs_log_item_chunk_t *cp);
 277 #define XFS_LIC_ARE_ALL_FREE(cp)        xfs_lic_are_all_free(cp)
 278 #else
 279 #define XFS_LIC_ARE_ALL_FREE(cp)        (((cp)->lic_free & XFS_LIC_FREEMASK) ==\
 280                                         XFS_LIC_FREEMASK)
 281 #endif
 282 #if XFS_WANT_FUNCS || (XFS_WANT_SPACE && XFSSO_XFS_LIC_ISFREE)
 283 int xfs_lic_isfree(xfs_log_item_chunk_t *cp, int slot);
 284 #define XFS_LIC_ISFREE(cp,slot) xfs_lic_isfree(cp,slot)
 285 #else
 286 #define XFS_LIC_ISFREE(cp,slot) ((cp)->lic_free & (1 << (slot)))
 287 #endif
 288 #if XFS_WANT_FUNCS || (XFS_WANT_SPACE && XFSSO_XFS_LIC_CLAIM)
 289 void xfs_lic_claim(xfs_log_item_chunk_t *cp, int slot);
 290 #define XFS_LIC_CLAIM(cp,slot)          xfs_lic_claim(cp,slot)
 291 #else
 292 #define XFS_LIC_CLAIM(cp,slot)          ((cp)->lic_free &= ~(1 << (slot)))
 293 #endif
 294 #if XFS_WANT_FUNCS || (XFS_WANT_SPACE && XFSSO_XFS_LIC_RELSE)
 295 void xfs_lic_relse(xfs_log_item_chunk_t *cp, int slot);
 296 #define XFS_LIC_RELSE(cp,slot)          xfs_lic_relse(cp,slot)
 297 #else
 298 #define XFS_LIC_RELSE(cp,slot)          ((cp)->lic_free |= 1 << (slot))
 299 #endif
 300 #if XFS_WANT_FUNCS || (XFS_WANT_SPACE && XFSSO_XFS_LIC_SLOT)
 301 xfs_log_item_desc_t *xfs_lic_slot(xfs_log_item_chunk_t *cp, int slot);
 302 #define XFS_LIC_SLOT(cp,slot)           xfs_lic_slot(cp,slot)
 303 #else
 304 #define XFS_LIC_SLOT(cp,slot)           (&((cp)->lic_descs[slot]))
 305 #endif
 306 #if XFS_WANT_FUNCS || (XFS_WANT_SPACE && XFSSO_XFS_LIC_DESC_TO_SLOT)
 307 int xfs_lic_desc_to_slot(xfs_log_item_desc_t *dp);
 308 #define XFS_LIC_DESC_TO_SLOT(dp)        xfs_lic_desc_to_slot(dp)
 309 #else
 310 #define XFS_LIC_DESC_TO_SLOT(dp)        ((uint)((dp)->lid_index))
 311 #endif
 312 /*
 313  * Calculate the address of a chunk given a descriptor pointer:
 314  * dp - dp->lid_index give the address of the start of the lic_descs array.
 315  * From this we subtract the offset of the lic_descs field in a chunk.
 316  * All of this yields the address of the chunk, which is
 317  * cast to a chunk pointer.
 318  */
 319 #if XFS_WANT_FUNCS || (XFS_WANT_SPACE && XFSSO_XFS_LIC_DESC_TO_CHUNK)
 320 xfs_log_item_chunk_t *xfs_lic_desc_to_chunk(xfs_log_item_desc_t *dp);
 321 #define XFS_LIC_DESC_TO_CHUNK(dp)       xfs_lic_desc_to_chunk(dp)
 322 #else
 323 #define XFS_LIC_DESC_TO_CHUNK(dp)       ((xfs_log_item_chunk_t*) \
 324                                         (((xfs_caddr_t)((dp) - (dp)->lid_index)) -\
 325                                         (xfs_caddr_t)(((xfs_log_item_chunk_t*) \
 326                                         0)->lic_descs)))
 327 #endif
 328
 329 #ifdef __KERNEL__
 330 /*
 331  * This structure is used to maintain a list of block ranges that have been
 332  * freed in the transaction.  The ranges are listed in the perag[] busy list
 333  * between when they're freed and the transaction is committed to disk.
 334  */
 335
 336 typedef struct xfs_log_busy_slot {
 337         xfs_agnumber_t          lbc_ag;
 338         ushort                  lbc_idx;        /* index in perag.busy[] */
 339 } xfs_log_busy_slot_t;
 340
 341 #define XFS_LBC_NUM_SLOTS       31
 342 typedef struct xfs_log_busy_chunk {
 343         struct xfs_log_busy_chunk       *lbc_next;
 344         uint                            lbc_free;       /* bitmask of free slots */
 345         ushort                          lbc_unused;     /* first unused */
 346         xfs_log_busy_slot_t             lbc_busy[XFS_LBC_NUM_SLOTS];
 347 } xfs_log_busy_chunk_t;
 348
 349 #define XFS_LBC_MAX_SLOT        (XFS_LBC_NUM_SLOTS - 1)
 350 #define XFS_LBC_FREEMASK        ((1U << XFS_LBC_NUM_SLOTS) - 1)
 351
 352 #define XFS_LBC_INIT(cp)        ((cp)->lbc_free = XFS_LBC_FREEMASK)
 353 #define XFS_LBC_CLAIM(cp, slot) ((cp)->lbc_free &= ~(1 << (slot)))
 354 #define XFS_LBC_SLOT(cp, slot)  (&((cp)->lbc_busy[(slot)]))
 355 #define XFS_LBC_VACANCY(cp)     (((cp)->lbc_free) & XFS_LBC_FREEMASK)
 356 #define XFS_LBC_ISFREE(cp, slot) ((cp)->lbc_free & (1 << (slot)))
 357
 358 /*
 359  * This is the type of function which can be given to xfs_trans_callback()
 360  * to be called upon the transaction's commit to disk.
 361  */
 362 typedef void (*xfs_trans_callback_t)(struct xfs_trans *, void *);
 363
 364 /*
 365  * This is the structure maintained for every active transaction.
 366  */
 367 typedef struct xfs_trans {
 368         unsigned int            t_magic;        /* magic number */
 369         xfs_log_callback_t      t_logcb;        /* log callback struct */
 370         struct xfs_trans        *t_forw;        /* async list pointers */
 371         struct xfs_trans        *t_back;        /* async list pointers */
 372         unsigned int            t_type;         /* transaction type */
 373         unsigned int            t_log_res;      /* amt of log space resvd */
 374         unsigned int            t_log_count;    /* count for perm log res */
 375         unsigned int            t_blk_res;      /* # of blocks resvd */
 376         unsigned int            t_blk_res_used; /* # of resvd blocks used */
 377         unsigned int            t_rtx_res;      /* # of rt extents resvd */
 378         unsigned int            t_rtx_res_used; /* # of resvd rt extents used */
 379         xfs_log_ticket_t        t_ticket;       /* log mgr ticket */
 380         sema_t                  t_sema;         /* sema for commit completion */
 381         xfs_lsn_t               t_lsn;          /* log seq num of start of
 382                                                  * transaction. */
 383         xfs_lsn_t               t_commit_lsn;   /* log seq num of end of
 384                                                  * transaction. */
 385         struct xfs_mount        *t_mountp;      /* ptr to fs mount struct */
 386         struct xfs_dquot_acct   *t_dqinfo;      /* accting info for dquots */
 387         xfs_trans_callback_t    t_callback;     /* transaction callback */
 388         void                    *t_callarg;     /* callback arg */
 389         unsigned int            t_flags;        /* misc flags */
 390         long                    t_icount_delta; /* superblock icount change */
 391         long                    t_ifree_delta;  /* superblock ifree change */
 392         long                    t_fdblocks_delta; /* superblock fdblocks chg */
 393         long                    t_res_fdblocks_delta; /* on-disk only chg */
 394         long                    t_frextents_delta;/* superblock freextents chg*/
 395         long                    t_res_frextents_delta; /* on-disk only chg */
 396         long                    t_ag_freeblks_delta; /* debugging counter */
 397         long                    t_ag_flist_delta; /* debugging counter */
 398         long                    t_ag_btree_delta; /* debugging counter */
 399         long                    t_dblocks_delta;/* superblock dblocks change */
 400         long                    t_agcount_delta;/* superblock agcount change */
 401         long                    t_imaxpct_delta;/* superblock imaxpct change */
 402         long                    t_rextsize_delta;/* superblock rextsize chg */
 403         long                    t_rbmblocks_delta;/* superblock rbmblocks chg */
 404         long                    t_rblocks_delta;/* superblock rblocks change */
 405         long                    t_rextents_delta;/* superblocks rextents chg */
 406         long                    t_rextslog_delta;/* superblocks rextslog chg */
 407         unsigned int            t_items_free;   /* log item descs free */
 408         xfs_log_item_chunk_t    t_items;        /* first log item desc chunk */
 409         xfs_trans_header_t      t_header;       /* header for in-log trans */
 410         unsigned int            t_busy_free;    /* busy descs free */
 411         xfs_log_busy_chunk_t    t_busy;         /* busy/async free blocks */
 412 } xfs_trans_t;
 413
 414 #endif  /* __KERNEL__ */
 415
 416
 417 #define XFS_TRANS_MAGIC         0x5452414E      /* 'TRAN' */
 418 /*
 419  * Values for t_flags.
 420  */
 421 #define XFS_TRANS_DIRTY         0x01    /* something needs to be logged */
 422 #define XFS_TRANS_SB_DIRTY      0x02    /* superblock is modified */
 423 #define XFS_TRANS_PERM_LOG_RES  0x04    /* xact took a permanent log res */
 424 #define XFS_TRANS_SYNC          0x08    /* make commit synchronous */
 425 #define XFS_TRANS_DQ_DIRTY      0x10    /* at least one dquot in trx dirty */
 426 #define XFS_TRANS_RESERVE       0x20    /* OK to use reserved data blocks */
 427
 428 /*
 429  * Values for call flags parameter.
 430  */
 431 #define XFS_TRANS_NOSLEEP               0x1
 432 #define XFS_TRANS_WAIT                  0x2
 433 #define XFS_TRANS_RELEASE_LOG_RES       0x4
 434 #define XFS_TRANS_ABORT                 0x8
 435
 436 /*
 437  * Field values for xfs_trans_mod_sb.
 438  */
 439 #define XFS_TRANS_SB_ICOUNT             0x00000001
 440 #define XFS_TRANS_SB_IFREE              0x00000002
 441 #define XFS_TRANS_SB_FDBLOCKS           0x00000004
 442 #define XFS_TRANS_SB_RES_FDBLOCKS       0x00000008
 443 #define XFS_TRANS_SB_FREXTENTS          0x00000010
 444 #define XFS_TRANS_SB_RES_FREXTENTS      0x00000020
 445 #define XFS_TRANS_SB_DBLOCKS            0x00000040
 446 #define XFS_TRANS_SB_AGCOUNT            0x00000080
 447 #define XFS_TRANS_SB_IMAXPCT            0x00000100
 448 #define XFS_TRANS_SB_REXTSIZE           0x00000200
 449 #define XFS_TRANS_SB_RBMBLOCKS          0x00000400
 450 #define XFS_TRANS_SB_RBLOCKS            0x00000800
 451 #define XFS_TRANS_SB_REXTENTS           0x00001000
 452 #define XFS_TRANS_SB_REXTSLOG           0x00002000
 453
 454
 455 /*
 456  * Various log reservation values.
 457  * These are based on the size of the file system block
 458  * because that is what most transactions manipulate.
 459  * Each adds in an additional 128 bytes per item logged to
 460  * try to account for the overhead of the transaction mechanism.
 461  *
 462  * Note:
 463  * Most of the reservations underestimate the number of allocation
 464  * groups into which they could free extents in the xfs_bmap_finish()
 465  * call.  This is because the number in the worst case is quite high
 466  * and quite unusual.  In order to fix this we need to change
 467  * xfs_bmap_finish() to free extents in only a single AG at a time.
 468  * This will require changes to the EFI code as well, however, so that
 469  * the EFI for the extents not freed is logged again in each transaction.
 470  * See bug 261917.
 471  */
 472
 473 /*
 474  * Per-extent log reservation for the allocation btree changes
 475  * involved in freeing or allocating an extent.
 476  * 2 trees * (2 blocks/level * max depth - 1) * block size
 477  */
 478 #define XFS_ALLOCFREE_LOG_RES(mp,nx) \
 479         ((nx) * (2 * XFS_FSB_TO_B((mp), 2 * XFS_AG_MAXLEVELS(mp) - 1)))
 480 #define XFS_ALLOCFREE_LOG_COUNT(mp,nx) \
 481         ((nx) * (2 * (2 * XFS_AG_MAXLEVELS(mp) - 1)))
 482
 483 /*
 484  * Per-directory log reservation for any directory change.
 485  * dir blocks: (1 btree block per level + data block + free block) * dblock size
 486  * bmap btree: (levels + 2) * max depth * block size
 487  * v2 directory blocks can be fragmented below the dirblksize down to the fsb
 488  * size, so account for that in the DAENTER macros.
 489  */
 490 #define XFS_DIROP_LOG_RES(mp)   \
 491         (XFS_FSB_TO_B(mp, XFS_DAENTER_BLOCKS(mp, XFS_DATA_FORK)) + \
 492          (XFS_FSB_TO_B(mp, XFS_DAENTER_BMAPS(mp, XFS_DATA_FORK) + 1)))
 493 #define XFS_DIROP_LOG_COUNT(mp) \
 494         (XFS_DAENTER_BLOCKS(mp, XFS_DATA_FORK) + \
 495          XFS_DAENTER_BMAPS(mp, XFS_DATA_FORK) + 1)
 496
 497 /*
 498  * In a write transaction we can allocate a maximum of 2
 499  * extents.  This gives:
 500  *    the inode getting the new extents: inode size
 501  *    the inode\'s bmap btree: max depth * block size
 502  *    the agfs of the ags from which the extents are allocated: 2 * sector
 503  *    the superblock free block counter: sector size
 504  *    the allocation btrees: 2 exts * 2 trees * (2 * max depth - 1) * block size
 505  * And the bmap_finish transaction can free bmap blocks in a join:
 506  *    the agfs of the ags containing the blocks: 2 * sector size
 507  *    the agfls of the ags containing the blocks: 2 * sector size
 508  *    the super block free block counter: sector size
 509  *    the allocation btrees: 2 exts * 2 trees * (2 * max depth - 1) * block size
 510  */
 511 #define XFS_CALC_WRITE_LOG_RES(mp) \
 512         (MAX( \
 513          ((mp)->m_sb.sb_inodesize + \
 514           XFS_FSB_TO_B((mp), XFS_BM_MAXLEVELS(mp, XFS_DATA_FORK)) + \
 515           (2 * (mp)->m_sb.sb_sectsize) + \
 516           (mp)->m_sb.sb_sectsize + \
 517           XFS_ALLOCFREE_LOG_RES(mp, 2) + \
 518           (128 * (4 + XFS_BM_MAXLEVELS(mp, XFS_DATA_FORK) + XFS_ALLOCFREE_LOG_COUNT(mp, 2)))),\
 519          ((2 * (mp)->m_sb.sb_sectsize) + \
 520           (2 * (mp)->m_sb.sb_sectsize) + \
 521           (mp)->m_sb.sb_sectsize + \
 522           XFS_ALLOCFREE_LOG_RES(mp, 2) + \
 523           (128 * (5 + XFS_ALLOCFREE_LOG_COUNT(mp, 2))))))
 524
 525 #define XFS_WRITE_LOG_RES(mp)   ((mp)->m_reservations.tr_write)
 526
 527 /*
 528  * In truncating a file we free up to two extents at once.  We can modify:
 529  *    the inode being truncated: inode size
 530  *    the inode\'s bmap btree: (max depth + 1) * block size
 531  * And the bmap_finish transaction can free the blocks and bmap blocks:
 532  *    the agf for each of the ags: 4 * sector size
 533  *    the agfl for each of the ags: 4 * sector size
 534  *    the super block to reflect the freed blocks: sector size
 535  *    worst case split in allocation btrees per extent assuming 4 extents:
 536  *              4 exts * 2 trees * (2 * max depth - 1) * block size
 537  */
 538 #define XFS_CALC_ITRUNCATE_LOG_RES(mp) \
 539         (MAX( \
 540          ((mp)->m_sb.sb_inodesize + \
 541           XFS_FSB_TO_B((mp), XFS_BM_MAXLEVELS(mp, XFS_DATA_FORK) + 1) + \
 542           (128 * (2 + XFS_BM_MAXLEVELS(mp, XFS_DATA_FORK)))), \
 543          ((4 * (mp)->m_sb.sb_sectsize) + \
 544           (4 * (mp)->m_sb.sb_sectsize) + \
 545           (mp)->m_sb.sb_sectsize + \
 546           XFS_ALLOCFREE_LOG_RES(mp, 4) + \
 547           (128 * (9 + XFS_ALLOCFREE_LOG_COUNT(mp, 4))))))
 548
 549 #define XFS_ITRUNCATE_LOG_RES(mp)   ((mp)->m_reservations.tr_itruncate)
 550
 551 /*
 552  * In renaming a files we can modify:
 553  *    the four inodes involved: 4 * inode size
 554  *    the two directory btrees: 2 * (max depth + v2) * dir block size
 555  *    the two directory bmap btrees: 2 * max depth * block size
 556  * And the bmap_finish transaction can free dir and bmap blocks (two sets
 557  *      of bmap blocks) giving:
 558  *    the agf for the ags in which the blocks live: 3 * sector size
 559  *    the agfl for the ags in which the blocks live: 3 * sector size
 560  *    the superblock for the free block count: sector size
 561  *    the allocation btrees: 3 exts * 2 trees * (2 * max depth - 1) * block size
 562  */
 563 #define XFS_CALC_RENAME_LOG_RES(mp) \
 564         (MAX( \
 565          ((4 * (mp)->m_sb.sb_inodesize) + \
 566           (2 * XFS_DIROP_LOG_RES(mp)) + \
 567           (128 * (4 + 2 * XFS_DIROP_LOG_COUNT(mp)))), \
 568          ((3 * (mp)->m_sb.sb_sectsize) + \
 569           (3 * (mp)->m_sb.sb_sectsize) + \
 570           (mp)->m_sb.sb_sectsize + \
 571           XFS_ALLOCFREE_LOG_RES(mp, 3) + \
 572           (128 * (7 + XFS_ALLOCFREE_LOG_COUNT(mp, 3))))))
 573
 574 #define XFS_RENAME_LOG_RES(mp)  ((mp)->m_reservations.tr_rename)
 575
 576 /*
 577  * For creating a link to an inode:
 578  *    the parent directory inode: inode size
 579  *    the linked inode: inode size
 580  *    the directory btree could split: (max depth + v2) * dir block size
 581  *    the directory bmap btree could join or split: (max depth + v2) * blocksize
 582  * And the bmap_finish transaction can free some bmap blocks giving:
 583  *    the agf for the ag in which the blocks live: sector size
 584  *    the agfl for the ag in which the blocks live: sector size
 585  *    the superblock for the free block count: sector size
 586  *    the allocation btrees: 2 trees * (2 * max depth - 1) * block size
 587  */
 588 #define XFS_CALC_LINK_LOG_RES(mp) \
 589         (MAX( \
 590          ((mp)->m_sb.sb_inodesize + \
 591           (mp)->m_sb.sb_inodesize + \
 592           XFS_DIROP_LOG_RES(mp) + \
 593           (128 * (2 + XFS_DIROP_LOG_COUNT(mp)))), \
 594          ((mp)->m_sb.sb_sectsize + \
 595           (mp)->m_sb.sb_sectsize + \
 596           (mp)->m_sb.sb_sectsize + \
 597           XFS_ALLOCFREE_LOG_RES(mp, 1) + \
 598           (128 * (3 + XFS_ALLOCFREE_LOG_COUNT(mp, 1))))))
 599
 600 #define XFS_LINK_LOG_RES(mp)    ((mp)->m_reservations.tr_link)
 601
 602 /*
 603  * For removing a directory entry we can modify:
 604  *    the parent directory inode: inode size
 605  *    the removed inode: inode size
 606  *    the directory btree could join: (max depth + v2) * dir block size
 607  *    the directory bmap btree could join or split: (max depth + v2) * blocksize
 608  * And the bmap_finish transaction can free the dir and bmap blocks giving:
 609  *    the agf for the ag in which the blocks live: 2 * sector size
 610  *    the agfl for the ag in which the blocks live: 2 * sector size
 611  *    the superblock for the free block count: sector size
 612  *    the allocation btrees: 2 exts * 2 trees * (2 * max depth - 1) * block size
 613  */
 614 #define XFS_CALC_REMOVE_LOG_RES(mp)     \
 615         (MAX( \
 616          ((mp)->m_sb.sb_inodesize + \
 617           (mp)->m_sb.sb_inodesize + \
 618           XFS_DIROP_LOG_RES(mp) + \
 619           (128 * (2 + XFS_DIROP_LOG_COUNT(mp)))), \
 620          ((2 * (mp)->m_sb.sb_sectsize) + \
 621           (2 * (mp)->m_sb.sb_sectsize) + \
 622           (mp)->m_sb.sb_sectsize + \
 623           XFS_ALLOCFREE_LOG_RES(mp, 2) + \
 624           (128 * (5 + XFS_ALLOCFREE_LOG_COUNT(mp, 2))))))
 625
 626 #define XFS_REMOVE_LOG_RES(mp)  ((mp)->m_reservations.tr_remove)
 627
 628 /*
 629  * For symlink we can modify:
 630  *    the parent directory inode: inode size
 631  *    the new inode: inode size
 632  *    the inode btree entry: 1 block
 633  *    the directory btree: (max depth + v2) * dir block size
 634  *    the directory inode\'s bmap btree: (max depth + v2) * block size
 635  *    the blocks for the symlink: 1 KB
 636  * Or in the first xact we allocate some inodes giving:
 637  *    the agi and agf of the ag getting the new inodes: 2 * sectorsize
 638  *    the inode blocks allocated: XFS_IALLOC_BLOCKS * blocksize
 639  *    the inode btree: max depth * blocksize
 640  *    the allocation btrees: 2 trees * (2 * max depth - 1) * block size
 641  */
 642 #define XFS_CALC_SYMLINK_LOG_RES(mp)            \
 643         (MAX( \
 644          ((mp)->m_sb.sb_inodesize + \
 645           (mp)->m_sb.sb_inodesize + \
 646           XFS_FSB_TO_B(mp, 1) + \
 647           XFS_DIROP_LOG_RES(mp) + \
 648           1024 + \
 649           (128 * (4 + XFS_DIROP_LOG_COUNT(mp)))), \
 650          (2 * (mp)->m_sb.sb_sectsize + \
 651           XFS_FSB_TO_B((mp), XFS_IALLOC_BLOCKS((mp))) + \
 652           XFS_FSB_TO_B((mp), XFS_IN_MAXLEVELS(mp)) + \
 653           XFS_ALLOCFREE_LOG_RES(mp, 1) + \
 654           (128 * (2 + XFS_IALLOC_BLOCKS(mp) + XFS_IN_MAXLEVELS(mp) + \
 655            XFS_ALLOCFREE_LOG_COUNT(mp, 1))))))
 656
 657 #define XFS_SYMLINK_LOG_RES(mp) ((mp)->m_reservations.tr_symlink)
 658
 659 /*
 660  * For create we can modify:
 661  *    the parent directory inode: inode size
 662  *    the new inode: inode size
 663  *    the inode btree entry: block size
 664  *    the superblock for the nlink flag: sector size
 665  *    the directory btree: (max depth + v2) * dir block size
 666  *    the directory inode\'s bmap btree: (max depth + v2) * block size
 667  * Or in the first xact we allocate some inodes giving:
 668  *    the agi and agf of the ag getting the new inodes: 2 * sectorsize
 669  *    the superblock for the nlink flag: sector size
 670  *    the inode blocks allocated: XFS_IALLOC_BLOCKS * blocksize
 671  *    the inode btree: max depth * blocksize
 672  *    the allocation btrees: 2 trees * (max depth - 1) * block size
 673  */
 674 #define XFS_CALC_CREATE_LOG_RES(mp)             \
 675         (MAX( \
 676          ((mp)->m_sb.sb_inodesize + \
 677           (mp)->m_sb.sb_inodesize + \
 678           (mp)->m_sb.sb_sectsize + \
 679           XFS_FSB_TO_B(mp, 1) + \
 680           XFS_DIROP_LOG_RES(mp) + \
 681           (128 * (3 + XFS_DIROP_LOG_COUNT(mp)))), \
 682          (3 * (mp)->m_sb.sb_sectsize + \
 683           XFS_FSB_TO_B((mp), XFS_IALLOC_BLOCKS((mp))) + \
 684           XFS_FSB_TO_B((mp), XFS_IN_MAXLEVELS(mp)) + \
 685           XFS_ALLOCFREE_LOG_RES(mp, 1) + \
 686           (128 * (2 + XFS_IALLOC_BLOCKS(mp) + XFS_IN_MAXLEVELS(mp) + \
 687            XFS_ALLOCFREE_LOG_COUNT(mp, 1))))))
 688
 689 #define XFS_CREATE_LOG_RES(mp)  ((mp)->m_reservations.tr_create)
 690
 691 /*
 692  * Making a new directory is the same as creating a new file.
 693  */
 694 #define XFS_CALC_MKDIR_LOG_RES(mp)      XFS_CALC_CREATE_LOG_RES(mp)
 695
 696 #define XFS_MKDIR_LOG_RES(mp)   ((mp)->m_reservations.tr_mkdir)
 697
 698 /*
 699  * In freeing an inode we can modify:
 700  *    the inode being freed: inode size
 701  *    the super block free inode counter: sector size
 702  *    the agi hash list and counters: sector size
 703  *    the inode btree entry: block size
 704  *    the on disk inode before ours in the agi hash list: inode cluster size
 705  */
 706 #define XFS_CALC_IFREE_LOG_RES(mp) \
 707         ((mp)->m_sb.sb_inodesize + \
 708          (mp)->m_sb.sb_sectsize + \
 709          (mp)->m_sb.sb_sectsize + \
 710          XFS_FSB_TO_B((mp), 1) + \
 711          MAX((__uint16_t)XFS_FSB_TO_B((mp), 1), XFS_INODE_CLUSTER_SIZE(mp)) + \
 712          (128 * 5))
 713
 714 #define XFS_IFREE_LOG_RES(mp)   ((mp)->m_reservations.tr_ifree)
 715
 716 /*
 717  * When only changing the inode we log the inode and possibly the superblock
 718  * We also add a bit of slop for the transaction stuff.
 719  */
 720 #define XFS_CALC_ICHANGE_LOG_RES(mp)    ((mp)->m_sb.sb_inodesize + \
 721                                          (mp)->m_sb.sb_sectsize + 512)
 722
 723 #define XFS_ICHANGE_LOG_RES(mp) ((mp)->m_reservations.tr_ichange)
 724
 725 /*
 726  * Growing the data section of the filesystem.
 727  *      superblock
 728  *      agi and agf
 729  *      allocation btrees
 730  */
 731 #define XFS_CALC_GROWDATA_LOG_RES(mp) \
 732         ((mp)->m_sb.sb_sectsize * 3 + \
 733          XFS_ALLOCFREE_LOG_RES(mp, 1) + \
 734          (128 * (3 + XFS_ALLOCFREE_LOG_COUNT(mp, 1))))
 735
 736 #define XFS_GROWDATA_LOG_RES(mp)    ((mp)->m_reservations.tr_growdata)
 737
 738 /*
 739  * Growing the rt section of the filesystem.
 740  * In the first set of transactions (ALLOC) we allocate space to the
 741  * bitmap or summary files.
 742  *      superblock: sector size
 743  *      agf of the ag from which the extent is allocated: sector size
 744  *      bmap btree for bitmap/summary inode: max depth * blocksize
 745  *      bitmap/summary inode: inode size
 746  *      allocation btrees for 1 block alloc: 2 * (2 * maxdepth - 1) * blocksize
 747  */
 748 #define XFS_CALC_GROWRTALLOC_LOG_RES(mp) \
 749         (2 * (mp)->m_sb.sb_sectsize + \
 750          XFS_FSB_TO_B((mp), XFS_BM_MAXLEVELS(mp, XFS_DATA_FORK)) + \
 751          (mp)->m_sb.sb_inodesize + \
 752          XFS_ALLOCFREE_LOG_RES(mp, 1) + \
 753          (128 * \
 754           (3 + XFS_BM_MAXLEVELS(mp, XFS_DATA_FORK) + \
 755            XFS_ALLOCFREE_LOG_COUNT(mp, 1))))
 756
 757 #define XFS_GROWRTALLOC_LOG_RES(mp)     ((mp)->m_reservations.tr_growrtalloc)
 758
 759 /*
 760  * Growing the rt section of the filesystem.
 761  * In the second set of transactions (ZERO) we zero the new metadata blocks.
 762  *      one bitmap/summary block: blocksize
 763  */
 764 #define XFS_CALC_GROWRTZERO_LOG_RES(mp) \
 765         ((mp)->m_sb.sb_blocksize + 128)
 766
 767 #define XFS_GROWRTZERO_LOG_RES(mp)      ((mp)->m_reservations.tr_growrtzero)
 768
 769 /*
 770  * Growing the rt section of the filesystem.
 771  * In the third set of transactions (FREE) we update metadata without
 772  * allocating any new blocks.
 773  *      superblock: sector size
 774  *      bitmap inode: inode size
 775  *      summary inode: inode size
 776  *      one bitmap block: blocksize
 777  *      summary blocks: new summary size
 778  */
 779 #define XFS_CALC_GROWRTFREE_LOG_RES(mp) \
 780         ((mp)->m_sb.sb_sectsize + \
 781          2 * (mp)->m_sb.sb_inodesize + \
 782          (mp)->m_sb.sb_blocksize + \
 783          (mp)->m_rsumsize + \
 784          (128 * 5))
 785
 786 #define XFS_GROWRTFREE_LOG_RES(mp)      ((mp)->m_reservations.tr_growrtfree)
 787
 788 /*
 789  * Logging the inode modification timestamp on a synchronous write.
 790  *      inode
 791  */
 792 #define XFS_CALC_SWRITE_LOG_RES(mp) \
 793         ((mp)->m_sb.sb_inodesize + 128)
 794
 795 #define XFS_SWRITE_LOG_RES(mp)  ((mp)->m_reservations.tr_swrite)
 796
 797 /*
 798  * Logging the inode timestamps on an fsync -- same as SWRITE
 799  * as long as SWRITE logs the entire inode core
 800  */
 801 #define XFS_FSYNC_TS_LOG_RES(mp)        ((mp)->m_reservations.tr_swrite)
 802
 803 /*
 804  * Logging the inode mode bits when writing a setuid/setgid file
 805  *      inode
 806  */
 807 #define XFS_CALC_WRITEID_LOG_RES(mp) \
 808         ((mp)->m_sb.sb_inodesize + 128)
 809
 810 #define XFS_WRITEID_LOG_RES(mp) ((mp)->m_reservations.tr_swrite)
 811
 812 /*
 813  * Converting the inode from non-attributed to attributed.
 814  *      the inode being converted: inode size
 815  *      agf block and superblock (for block allocation)
 816  *      the new block (directory sized)
 817  *      bmap blocks for the new directory block
 818  *      allocation btrees
 819  */
 820 #define XFS_CALC_ADDAFORK_LOG_RES(mp)   \
 821         ((mp)->m_sb.sb_inodesize + \
 822          (mp)->m_sb.sb_sectsize * 2 + \
 823          (mp)->m_dirblksize + \
 824          (XFS_DIR_IS_V1(mp) ? 0 : \
 825             XFS_FSB_TO_B(mp, (XFS_DAENTER_BMAP1B(mp, XFS_DATA_FORK) + 1))) + \
 826          XFS_ALLOCFREE_LOG_RES(mp, 1) + \
 827          (128 * (4 + \
 828                  (XFS_DIR_IS_V1(mp) ? 0 : \
 829                          XFS_DAENTER_BMAP1B(mp, XFS_DATA_FORK) + 1) + \
 830                  XFS_ALLOCFREE_LOG_COUNT(mp, 1))))
 831
 832 #define XFS_ADDAFORK_LOG_RES(mp)        ((mp)->m_reservations.tr_addafork)
 833
 834 /*
 835  * Removing the attribute fork of a file
 836  *    the inode being truncated: inode size
 837  *    the inode\'s bmap btree: max depth * block size
 838  * And the bmap_finish transaction can free the blocks and bmap blocks:
 839  *    the agf for each of the ags: 4 * sector size
 840  *    the agfl for each of the ags: 4 * sector size
 841  *    the super block to reflect the freed blocks: sector size
 842  *    worst case split in allocation btrees per extent assuming 4 extents:
 843  *              4 exts * 2 trees * (2 * max depth - 1) * block size
 844  */
 845 #define XFS_CALC_ATTRINVAL_LOG_RES(mp)  \
 846         (MAX( \
 847          ((mp)->m_sb.sb_inodesize + \
 848           XFS_FSB_TO_B((mp), XFS_BM_MAXLEVELS(mp, XFS_ATTR_FORK)) + \
 849           (128 * (1 + XFS_BM_MAXLEVELS(mp, XFS_ATTR_FORK)))), \
 850          ((4 * (mp)->m_sb.sb_sectsize) + \
 851           (4 * (mp)->m_sb.sb_sectsize) + \
 852           (mp)->m_sb.sb_sectsize + \
 853           XFS_ALLOCFREE_LOG_RES(mp, 4) + \
 854           (128 * (9 + XFS_ALLOCFREE_LOG_COUNT(mp, 4))))))
 855
 856 #define XFS_ATTRINVAL_LOG_RES(mp)       ((mp)->m_reservations.tr_attrinval)
 857
 858 /*
 859  * Setting an attribute.
 860  *      the inode getting the attribute
 861  *      the superblock for allocations
 862  *      the agfs extents are allocated from
 863  *      the attribute btree * max depth
 864  *      the inode allocation btree
 865  * Since attribute transaction space is dependent on the size of the attribute,
 866  * the calculation is done partially at mount time and partially at runtime.
 867  */
 868 #define XFS_CALC_ATTRSET_LOG_RES(mp)    \
 869         ((mp)->m_sb.sb_inodesize + \
 870          (mp)->m_sb.sb_sectsize + \
 871           XFS_FSB_TO_B((mp), XFS_DA_NODE_MAXDEPTH) + \
 872           (128 * (2 + XFS_DA_NODE_MAXDEPTH)))
 873
 874 #define XFS_ATTRSET_LOG_RES(mp, ext)    \
 875         ((mp)->m_reservations.tr_attrset + \
 876          (ext * (mp)->m_sb.sb_sectsize) + \
 877          (ext * XFS_FSB_TO_B((mp), XFS_BM_MAXLEVELS(mp, XFS_ATTR_FORK))) + \
 878          (128 * (ext + (ext * XFS_BM_MAXLEVELS(mp, XFS_ATTR_FORK)))))
 879
 880 /*
 881  * Removing an attribute.
 882  *    the inode: inode size
 883  *    the attribute btree could join: max depth * block size
 884  *    the inode bmap btree could join or split: max depth * block size
 885  * And the bmap_finish transaction can free the attr blocks freed giving:
 886  *    the agf for the ag in which the blocks live: 2 * sector size
 887  *    the agfl for the ag in which the blocks live: 2 * sector size
 888  *    the superblock for the free block count: sector size
 889  *    the allocation btrees: 2 exts * 2 trees * (2 * max depth - 1) * block size
 890  */
 891 #define XFS_CALC_ATTRRM_LOG_RES(mp)     \
 892         (MAX( \
 893           ((mp)->m_sb.sb_inodesize + \
 894           XFS_FSB_TO_B((mp), XFS_DA_NODE_MAXDEPTH) + \
 895           XFS_FSB_TO_B((mp), XFS_BM_MAXLEVELS(mp, XFS_ATTR_FORK)) + \
 896           (128 * (1 + XFS_DA_NODE_MAXDEPTH + XFS_BM_MAXLEVELS(mp, XFS_DATA_FORK)))), \
 897          ((2 * (mp)->m_sb.sb_sectsize) + \
 898           (2 * (mp)->m_sb.sb_sectsize) + \
 899           (mp)->m_sb.sb_sectsize + \
 900           XFS_ALLOCFREE_LOG_RES(mp, 2) + \
 901           (128 * (5 + XFS_ALLOCFREE_LOG_COUNT(mp, 2))))))
 902
 903 #define XFS_ATTRRM_LOG_RES(mp)  ((mp)->m_reservations.tr_attrrm)
 904
 905 /*
 906  * Clearing a bad agino number in an agi hash bucket.
 907  */
 908 #define XFS_CALC_CLEAR_AGI_BUCKET_LOG_RES(mp) \
 909         ((mp)->m_sb.sb_sectsize + 128)
 910
 911 #define XFS_CLEAR_AGI_BUCKET_LOG_RES(mp)  ((mp)->m_reservations.tr_clearagi)
 912
 913
 914 /*
 915  * Various log count values.
 916  */
 917 #define XFS_DEFAULT_LOG_COUNT           1
 918 #define XFS_DEFAULT_PERM_LOG_COUNT      2
 919 #define XFS_ITRUNCATE_LOG_COUNT         2
 920 #define XFS_CREATE_LOG_COUNT            2
 921 #define XFS_MKDIR_LOG_COUNT             3
 922 #define XFS_SYMLINK_LOG_COUNT           3
 923 #define XFS_REMOVE_LOG_COUNT            2
 924 #define XFS_LINK_LOG_COUNT              2
 925 #define XFS_RENAME_LOG_COUNT            2
 926 #define XFS_WRITE_LOG_COUNT             2
 927 #define XFS_ADDAFORK_LOG_COUNT          2
 928 #define XFS_ATTRINVAL_LOG_COUNT         1
 929 #define XFS_ATTRSET_LOG_COUNT           3
 930 #define XFS_ATTRRM_LOG_COUNT            3
 931
 932 /*
 933  * Here we centralize the specification of XFS meta-data buffer
 934  * reference count values.  This determine how hard the buffer
 935  * cache tries to hold onto the buffer.
 936  */
 937 #define XFS_AGF_REF             4
 938 #define XFS_AGI_REF             4
 939 #define XFS_AGFL_REF            3
 940 #define XFS_INO_BTREE_REF       3
 941 #define XFS_ALLOC_BTREE_REF     2
 942 #define XFS_BMAP_BTREE_REF      2
 943 #define XFS_DIR_BTREE_REF       2
 944 #define XFS_ATTR_BTREE_REF      1
 945 #define XFS_INO_REF             1
 946 #define XFS_DQUOT_REF           1
 947
 948 #ifdef __KERNEL__
 949 /*
 950  * XFS transaction mechanism exported interfaces that are
 951  * actually macros.
 952  */
 953 #define xfs_trans_get_log_res(tp)       ((tp)->t_log_res)
 954 #define xfs_trans_get_log_count(tp)     ((tp)->t_log_count)
 955 #define xfs_trans_get_block_res(tp)     ((tp)->t_blk_res)
 956 #define xfs_trans_set_sync(tp)          ((tp)->t_flags |= XFS_TRANS_SYNC)
 957
 958 #ifdef DEBUG
 959 #define xfs_trans_agblocks_delta(tp, d) ((tp)->t_ag_freeblks_delta += (long)d)
 960 #define xfs_trans_agflist_delta(tp, d)  ((tp)->t_ag_flist_delta += (long)d)
 961 #define xfs_trans_agbtree_delta(tp, d)  ((tp)->t_ag_btree_delta += (long)d)
 962 #else
 963 #define xfs_trans_agblocks_delta(tp, d)
 964 #define xfs_trans_agflist_delta(tp, d)
 965 #define xfs_trans_agbtree_delta(tp, d)
 966 #endif
 967
 968 /*
 969  * XFS transaction mechanism exported interfaces.
 970  */
 971 void            xfs_trans_init(struct xfs_mount *);
 972 xfs_trans_t     *xfs_trans_alloc(struct xfs_mount *, uint);
 973 xfs_trans_t     *_xfs_trans_alloc(struct xfs_mount *, uint);
 974 xfs_trans_t     *xfs_trans_dup(xfs_trans_t *);
 975 int             xfs_trans_reserve(xfs_trans_t *, uint, uint, uint,
 976                                   uint, uint);
 977 void            xfs_trans_callback(xfs_trans_t *,
 978                                    void (*)(xfs_trans_t *, void *), void *);
 979 void            xfs_trans_mod_sb(xfs_trans_t *, uint, long);
 980 struct xfs_buf  *xfs_trans_get_buf(xfs_trans_t *, struct xfs_buftarg *, xfs_daddr_t,
 981                                    int, uint);
 982 int             xfs_trans_read_buf(struct xfs_mount *, xfs_trans_t *,
 983                                    struct xfs_buftarg *, xfs_daddr_t, int, uint,
 984                                    struct xfs_buf **);
 985 struct xfs_buf  *xfs_trans_getsb(xfs_trans_t *, struct xfs_mount *, int);
 986
 987 void            xfs_trans_brelse(xfs_trans_t *, struct xfs_buf *);
 988 void            xfs_trans_bjoin(xfs_trans_t *, struct xfs_buf *);
 989 void            xfs_trans_bhold(xfs_trans_t *, struct xfs_buf *);
 990 void            xfs_trans_bhold_until_committed(xfs_trans_t *, struct xfs_buf *);
 991 void            xfs_trans_binval(xfs_trans_t *, struct xfs_buf *);
 992 void            xfs_trans_inode_buf(xfs_trans_t *, struct xfs_buf *);
 993 void            xfs_trans_dquot_buf(xfs_trans_t *, struct xfs_buf *, uint);
 994 void            xfs_trans_inode_alloc_buf(xfs_trans_t *, struct xfs_buf *);
 995 int             xfs_trans_iget(struct xfs_mount *, xfs_trans_t *,
 996                                xfs_ino_t , uint, struct xfs_inode **);
 997 void            xfs_trans_iput(xfs_trans_t *, struct xfs_inode *, uint);
 998 void            xfs_trans_ijoin(xfs_trans_t *, struct xfs_inode *, uint);
 999 void            xfs_trans_ihold(xfs_trans_t *, struct xfs_inode *);
1000 void            xfs_trans_ihold_release(xfs_trans_t *, struct xfs_inode *);
1001 void            xfs_trans_log_buf(xfs_trans_t *, struct xfs_buf *, uint, uint);
1002 void            xfs_trans_log_inode(xfs_trans_t *, struct xfs_inode *, uint);
1003 struct xfs_efi_log_item *xfs_trans_get_efi(xfs_trans_t *, uint);
1004 void            xfs_efi_release(struct xfs_efi_log_item *, uint);
1005 void            xfs_trans_log_efi_extent(xfs_trans_t *,
1006                                          struct xfs_efi_log_item *,
1007                                          xfs_fsblock_t,
1008                                          xfs_extlen_t);
1009 struct xfs_efd_log_item *xfs_trans_get_efd(xfs_trans_t *,
1010                                   struct xfs_efi_log_item *,
1011                                   uint);
1012 void            xfs_trans_log_efd_extent(xfs_trans_t *,
1013                                          struct xfs_efd_log_item *,
1014                                          xfs_fsblock_t,
1015                                          xfs_extlen_t);
1016 int             xfs_trans_commit(xfs_trans_t *, uint flags, xfs_lsn_t *);
1017 void            xfs_trans_cancel(xfs_trans_t *, int);
1018 void            xfs_trans_ail_init(struct xfs_mount *);
1019 xfs_lsn_t       xfs_trans_push_ail(struct xfs_mount *, xfs_lsn_t);
1020 xfs_lsn_t       xfs_trans_tail_ail(struct xfs_mount *);
1021 void            xfs_trans_unlocked_item(struct xfs_mount *,
1022                                         xfs_log_item_t *);
1023 xfs_log_busy_slot_t *xfs_trans_add_busy(xfs_trans_t *tp,
1024                                         xfs_agnumber_t ag,
1025                                         xfs_extlen_t idx);
1026
1027 #endif  /* __KERNEL__ */
1028
1029 #endif  /* __XFS_TRANS_H__ */