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 #define XFS_LI_RPC              0x123f  /* CXFS RPC return info */
  68
  69 /*
  70  * Transaction types.  Used to distinguish types of buffers.
  71  */
  72 #define XFS_TRANS_SETATTR_NOT_SIZE      1
  73 #define XFS_TRANS_SETATTR_SIZE          2
  74 #define XFS_TRANS_INACTIVE              3
  75 #define XFS_TRANS_CREATE                4
  76 #define XFS_TRANS_CREATE_TRUNC          5
  77 #define XFS_TRANS_TRUNCATE_FILE         6
  78 #define XFS_TRANS_REMOVE                7
  79 #define XFS_TRANS_LINK                  8
  80 #define XFS_TRANS_RENAME                9
  81 #define XFS_TRANS_MKDIR                 10
  82 #define XFS_TRANS_RMDIR                 11
  83 #define XFS_TRANS_SYMLINK               12
  84 #define XFS_TRANS_SET_DMATTRS           13
  85 #define XFS_TRANS_GROWFS                14
  86 #define XFS_TRANS_STRAT_WRITE           15
  87 #define XFS_TRANS_DIOSTRAT              16
  88 #define XFS_TRANS_WRITE_SYNC            17
  89 #define XFS_TRANS_WRITEID               18
  90 #define XFS_TRANS_ADDAFORK              19
  91 #define XFS_TRANS_ATTRINVAL             20
  92 #define XFS_TRANS_ATRUNCATE             21
  93 #define XFS_TRANS_ATTR_SET              22
  94 #define XFS_TRANS_ATTR_RM               23
  95 #define XFS_TRANS_ATTR_FLAG             24
  96 #define XFS_TRANS_CLEAR_AGI_BUCKET      25
  97 #define XFS_TRANS_QM_SBCHANGE           26
  98 /*
  99  * Dummy entries since we use the transaction type to index into the
 100  * trans_type[] in xlog_recover_print_trans_head()
 101  */
 102 #define XFS_TRANS_DUMMY1                27
 103 #define XFS_TRANS_DUMMY2                28
 104 #define XFS_TRANS_QM_QUOTAOFF           29
 105 #define XFS_TRANS_QM_DQALLOC            30
 106 #define XFS_TRANS_QM_SETQLIM            31
 107 #define XFS_TRANS_QM_DQCLUSTER          32
 108 #define XFS_TRANS_QM_QINOCREATE         33
 109 #define XFS_TRANS_QM_QUOTAOFF_END       34
 110 #define XFS_TRANS_SB_UNIT               35
 111 #define XFS_TRANS_FSYNC_TS              36
 112 #define XFS_TRANS_GROWFSRT_ALLOC        37
 113 #define XFS_TRANS_GROWFSRT_ZERO         38
 114 #define XFS_TRANS_GROWFSRT_FREE         39
 115 #define XFS_TRANS_SWAPEXT               40
 116 /* new transaction types need to be reflected in xfs_logprint(8) */
 117
 118
 119 #ifdef __KERNEL__
 120 struct xfs_buf;
 121 struct xfs_buftarg;
 122 struct xfs_efd_log_item;
 123 struct xfs_efi_log_item;
 124 struct xfs_inode;
 125 struct xfs_item_ops;
 126 struct xfs_log_iovec;
 127 struct xfs_log_item;
 128 struct xfs_log_item_desc;
 129 struct xfs_mount;
 130 struct xfs_trans;
 131 struct xfs_dquot_acct;
 132
 133 typedef struct xfs_ail_entry {
 134         struct xfs_log_item     *ail_forw;      /* AIL forw pointer */
 135         struct xfs_log_item     *ail_back;      /* AIL back pointer */
 136 } xfs_ail_entry_t;
 137
 138 /*
 139  * This structure is passed as a parameter to xfs_trans_push_ail()
 140  * and is used to track the what LSN the waiting processes are
 141  * waiting to become unused.
 142  */
 143 typedef struct xfs_ail_ticket {
 144         xfs_lsn_t               at_lsn;         /* lsn waitin for */
 145         struct xfs_ail_ticket   *at_forw;       /* wait list ptr */
 146         struct xfs_ail_ticket   *at_back;       /* wait list ptr */
 147         sv_t                    at_sema;        /* wait sema */
 148 } xfs_ail_ticket_t;
 149
 150
 151 typedef struct xfs_log_item {
 152         xfs_ail_entry_t                 li_ail;         /* AIL pointers */
 153         xfs_lsn_t                       li_lsn;         /* last on-disk lsn */
 154         struct xfs_log_item_desc        *li_desc;       /* ptr to current desc*/
 155         struct xfs_mount                *li_mountp;     /* ptr to fs mount */
 156         uint                            li_type;        /* item type */
 157         uint                            li_flags;       /* misc flags */
 158         struct xfs_log_item             *li_bio_list;   /* buffer item list */
 159         void                            (*li_cb)(struct xfs_buf *,
 160                                                  struct xfs_log_item *);
 161                                                         /* buffer item iodone */
 162                                                         /* callback func */
 163         struct xfs_item_ops             *li_ops;        /* function list */
 164 } xfs_log_item_t;
 165
 166 #define XFS_LI_IN_AIL   0x1
 167 #define XFS_LI_ABORTED  0x2
 168
 169 typedef struct xfs_item_ops {
 170         uint (*iop_size)(xfs_log_item_t *);
 171         void (*iop_format)(xfs_log_item_t *, struct xfs_log_iovec *);
 172         void (*iop_pin)(xfs_log_item_t *);
 173         void (*iop_unpin)(xfs_log_item_t *);
 174         void (*iop_unpin_remove)(xfs_log_item_t *, struct xfs_trans *);
 175         uint (*iop_trylock)(xfs_log_item_t *);
 176         void (*iop_unlock)(xfs_log_item_t *);
 177         xfs_lsn_t (*iop_committed)(xfs_log_item_t *, xfs_lsn_t);
 178         void (*iop_push)(xfs_log_item_t *);
 179         void (*iop_abort)(xfs_log_item_t *);
 180         void (*iop_pushbuf)(xfs_log_item_t *);
 181         void (*iop_committing)(xfs_log_item_t *, xfs_lsn_t);
 182 } xfs_item_ops_t;
 183
 184 #define IOP_SIZE(ip)            (*(ip)->li_ops->iop_size)(ip)
 185 #define IOP_FORMAT(ip,vp)       (*(ip)->li_ops->iop_format)(ip, vp)
 186 #define IOP_PIN(ip)             (*(ip)->li_ops->iop_pin)(ip)
 187 #define IOP_UNPIN(ip)           (*(ip)->li_ops->iop_unpin)(ip)
 188 #define IOP_UNPIN_REMOVE(ip,tp) (*(ip)->li_ops->iop_unpin_remove)(ip, tp)
 189 #define IOP_TRYLOCK(ip)         (*(ip)->li_ops->iop_trylock)(ip)
 190 #define IOP_UNLOCK(ip)          (*(ip)->li_ops->iop_unlock)(ip)
 191 #define IOP_COMMITTED(ip, lsn)  (*(ip)->li_ops->iop_committed)(ip, lsn)
 192 #define IOP_PUSH(ip)            (*(ip)->li_ops->iop_push)(ip)
 193 #define IOP_ABORT(ip)           (*(ip)->li_ops->iop_abort)(ip)
 194 #define IOP_PUSHBUF(ip)         (*(ip)->li_ops->iop_pushbuf)(ip)
 195 #define IOP_COMMITTING(ip, lsn) (*(ip)->li_ops->iop_committing)(ip, lsn)
 196
 197 /*
 198  * Return values for the IOP_TRYLOCK() routines.
 199  */
 200 #define XFS_ITEM_SUCCESS        0
 201 #define XFS_ITEM_PINNED         1
 202 #define XFS_ITEM_LOCKED         2
 203 #define XFS_ITEM_FLUSHING       3
 204 #define XFS_ITEM_PUSHBUF        4
 205
 206 #endif  /* __KERNEL__ */
 207
 208 /*
 209  * This structure is used to track log items associated with
 210  * a transaction.  It points to the log item and keeps some
 211  * flags to track the state of the log item.  It also tracks
 212  * the amount of space needed to log the item it describes
 213  * once we get to commit processing (see xfs_trans_commit()).
 214  */
 215 typedef struct xfs_log_item_desc {
 216         xfs_log_item_t  *lid_item;
 217         ushort          lid_size;
 218         unsigned char   lid_flags;
 219         unsigned char   lid_index;
 220 } xfs_log_item_desc_t;
 221
 222 #define XFS_LID_DIRTY           0x1
 223 #define XFS_LID_PINNED          0x2
 224 #define XFS_LID_SYNC_UNLOCK     0x4
 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 trans commit*/
 382         struct xfs_mount        *t_mountp;      /* ptr to fs mount struct */
 383         struct xfs_dquot_acct   *t_dqinfo;      /* accting info for dquots */
 384         xfs_trans_callback_t    t_callback;     /* transaction callback */
 385         void                    *t_callarg;     /* callback arg */
 386         unsigned int            t_flags;        /* misc flags */
 387         long                    t_icount_delta; /* superblock icount change */
 388         long                    t_ifree_delta;  /* superblock ifree change */
 389         long                    t_fdblocks_delta; /* superblock fdblocks chg */
 390         long                    t_res_fdblocks_delta; /* on-disk only chg */
 391         long                    t_frextents_delta;/* superblock freextents chg*/
 392         long                    t_res_frextents_delta; /* on-disk only chg */
 393         long                    t_ag_freeblks_delta; /* debugging counter */
 394         long                    t_ag_flist_delta; /* debugging counter */
 395         long                    t_ag_btree_delta; /* debugging counter */
 396         long                    t_dblocks_delta;/* superblock dblocks change */
 397         long                    t_agcount_delta;/* superblock agcount change */
 398         long                    t_imaxpct_delta;/* superblock imaxpct change */
 399         long                    t_rextsize_delta;/* superblock rextsize chg */
 400         long                    t_rbmblocks_delta;/* superblock rbmblocks chg */
 401         long                    t_rblocks_delta;/* superblock rblocks change */
 402         long                    t_rextents_delta;/* superblocks rextents chg */
 403         long                    t_rextslog_delta;/* superblocks rextslog chg */
 404         unsigned int            t_items_free;   /* log item descs free */
 405         xfs_log_item_chunk_t    t_items;        /* first log item desc chunk */
 406         xfs_trans_header_t      t_header;       /* header for in-log trans */
 407         unsigned int            t_busy_free;    /* busy descs free */
 408         xfs_log_busy_chunk_t    t_busy;         /* busy/async free blocks */
 409 } xfs_trans_t;
 410
 411 #endif  /* __KERNEL__ */
 412
 413
 414 #define XFS_TRANS_MAGIC         0x5452414E      /* 'TRAN' */
 415 /*
 416  * Values for t_flags.
 417  */
 418 #define XFS_TRANS_DIRTY         0x01    /* something needs to be logged */
 419 #define XFS_TRANS_SB_DIRTY      0x02    /* superblock is modified */
 420 #define XFS_TRANS_PERM_LOG_RES  0x04    /* xact took a permanent log res */
 421 #define XFS_TRANS_SYNC          0x08    /* make commit synchronous */
 422 #define XFS_TRANS_DQ_DIRTY      0x10    /* at least one dquot in trx dirty */
 423 #define XFS_TRANS_RESERVE       0x20    /* OK to use reserved data blocks */
 424
 425 /*
 426  * Values for call flags parameter.
 427  */
 428 #define XFS_TRANS_NOSLEEP               0x1
 429 #define XFS_TRANS_WAIT                  0x2
 430 #define XFS_TRANS_RELEASE_LOG_RES       0x4
 431 #define XFS_TRANS_ABORT                 0x8
 432
 433 /*
 434  * Field values for xfs_trans_mod_sb.
 435  */
 436 #define XFS_TRANS_SB_ICOUNT             0x00000001
 437 #define XFS_TRANS_SB_IFREE              0x00000002
 438 #define XFS_TRANS_SB_FDBLOCKS           0x00000004
 439 #define XFS_TRANS_SB_RES_FDBLOCKS       0x00000008
 440 #define XFS_TRANS_SB_FREXTENTS          0x00000010
 441 #define XFS_TRANS_SB_RES_FREXTENTS      0x00000020
 442 #define XFS_TRANS_SB_DBLOCKS            0x00000040
 443 #define XFS_TRANS_SB_AGCOUNT            0x00000080
 444 #define XFS_TRANS_SB_IMAXPCT            0x00000100
 445 #define XFS_TRANS_SB_REXTSIZE           0x00000200
 446 #define XFS_TRANS_SB_RBMBLOCKS          0x00000400
 447 #define XFS_TRANS_SB_RBLOCKS            0x00000800
 448 #define XFS_TRANS_SB_REXTENTS           0x00001000
 449 #define XFS_TRANS_SB_REXTSLOG           0x00002000
 450
 451
 452 /*
 453  * Various log reservation values.
 454  * These are based on the size of the file system block
 455  * because that is what most transactions manipulate.
 456  * Each adds in an additional 128 bytes per item logged to
 457  * try to account for the overhead of the transaction mechanism.
 458  *
 459  * Note:
 460  * Most of the reservations underestimate the number of allocation
 461  * groups into which they could free extents in the xfs_bmap_finish()
 462  * call.  This is because the number in the worst case is quite high
 463  * and quite unusual.  In order to fix this we need to change
 464  * xfs_bmap_finish() to free extents in only a single AG at a time.
 465  * This will require changes to the EFI code as well, however, so that
 466  * the EFI for the extents not freed is logged again in each transaction.
 467  * See bug 261917.
 468  */
 469
 470 /*
 471  * Per-extent log reservation for the allocation btree changes
 472  * involved in freeing or allocating an extent.
 473  * 2 trees * (2 blocks/level * max depth - 1) * block size
 474  */
 475 #define XFS_ALLOCFREE_LOG_RES(mp,nx) \
 476         ((nx) * (2 * XFS_FSB_TO_B((mp), 2 * XFS_AG_MAXLEVELS(mp) - 1)))
 477 #define XFS_ALLOCFREE_LOG_COUNT(mp,nx) \
 478         ((nx) * (2 * (2 * XFS_AG_MAXLEVELS(mp) - 1)))
 479
 480 /*
 481  * Per-directory log reservation for any directory change.
 482  * dir blocks: (1 btree block per level + data block + free block) * dblock size
 483  * bmap btree: (levels + 2) * max depth * block size
 484  * v2 directory blocks can be fragmented below the dirblksize down to the fsb
 485  * size, so account for that in the DAENTER macros.
 486  */
 487 #define XFS_DIROP_LOG_RES(mp)   \
 488         (XFS_FSB_TO_B(mp, XFS_DAENTER_BLOCKS(mp, XFS_DATA_FORK)) + \
 489          (XFS_FSB_TO_B(mp, XFS_DAENTER_BMAPS(mp, XFS_DATA_FORK) + 1)))
 490 #define XFS_DIROP_LOG_COUNT(mp) \
 491         (XFS_DAENTER_BLOCKS(mp, XFS_DATA_FORK) + \
 492          XFS_DAENTER_BMAPS(mp, XFS_DATA_FORK) + 1)
 493
 494 /*
 495  * In a write transaction we can allocate a maximum of 2
 496  * extents.  This gives:
 497  *    the inode getting the new extents: inode size
 498  *    the inode\'s bmap btree: max depth * block size
 499  *    the agfs of the ags from which the extents are allocated: 2 * sector
 500  *    the superblock free block counter: sector size
 501  *    the allocation btrees: 2 exts * 2 trees * (2 * max depth - 1) * block size
 502  * And the bmap_finish transaction can free bmap blocks in a join:
 503  *    the agfs of the ags containing the blocks: 2 * sector size
 504  *    the agfls of the ags containing the blocks: 2 * sector size
 505  *    the super block free block counter: sector size
 506  *    the allocation btrees: 2 exts * 2 trees * (2 * max depth - 1) * block size
 507  */
 508 #define XFS_CALC_WRITE_LOG_RES(mp) \
 509         (MAX( \
 510          ((mp)->m_sb.sb_inodesize + \
 511           XFS_FSB_TO_B((mp), XFS_BM_MAXLEVELS(mp, XFS_DATA_FORK)) + \
 512           (2 * (mp)->m_sb.sb_sectsize) + \
 513           (mp)->m_sb.sb_sectsize + \
 514           XFS_ALLOCFREE_LOG_RES(mp, 2) + \
 515           (128 * (4 + XFS_BM_MAXLEVELS(mp, XFS_DATA_FORK) + XFS_ALLOCFREE_LOG_COUNT(mp, 2)))),\
 516          ((2 * (mp)->m_sb.sb_sectsize) + \
 517           (2 * (mp)->m_sb.sb_sectsize) + \
 518           (mp)->m_sb.sb_sectsize + \
 519           XFS_ALLOCFREE_LOG_RES(mp, 2) + \
 520           (128 * (5 + XFS_ALLOCFREE_LOG_COUNT(mp, 2))))))
 521
 522 #define XFS_WRITE_LOG_RES(mp)   ((mp)->m_reservations.tr_write)
 523
 524 /*
 525  * In truncating a file we free up to two extents at once.  We can modify:
 526  *    the inode being truncated: inode size
 527  *    the inode\'s bmap btree: (max depth + 1) * block size
 528  * And the bmap_finish transaction can free the blocks and bmap blocks:
 529  *    the agf for each of the ags: 4 * sector size
 530  *    the agfl for each of the ags: 4 * sector size
 531  *    the super block to reflect the freed blocks: sector size
 532  *    worst case split in allocation btrees per extent assuming 4 extents:
 533  *              4 exts * 2 trees * (2 * max depth - 1) * block size
 534  */
 535 #define XFS_CALC_ITRUNCATE_LOG_RES(mp) \
 536         (MAX( \
 537          ((mp)->m_sb.sb_inodesize + \
 538           XFS_FSB_TO_B((mp), XFS_BM_MAXLEVELS(mp, XFS_DATA_FORK) + 1) + \
 539           (128 * (2 + XFS_BM_MAXLEVELS(mp, XFS_DATA_FORK)))), \
 540          ((4 * (mp)->m_sb.sb_sectsize) + \
 541           (4 * (mp)->m_sb.sb_sectsize) + \
 542           (mp)->m_sb.sb_sectsize + \
 543           XFS_ALLOCFREE_LOG_RES(mp, 4) + \
 544           (128 * (9 + XFS_ALLOCFREE_LOG_COUNT(mp, 4))))))
 545
 546 #define XFS_ITRUNCATE_LOG_RES(mp)   ((mp)->m_reservations.tr_itruncate)
 547
 548 /*
 549  * In renaming a files we can modify:
 550  *    the four inodes involved: 4 * inode size
 551  *    the two directory btrees: 2 * (max depth + v2) * dir block size
 552  *    the two directory bmap btrees: 2 * max depth * block size
 553  * And the bmap_finish transaction can free dir and bmap blocks (two sets
 554  *      of bmap blocks) giving:
 555  *    the agf for the ags in which the blocks live: 3 * sector size
 556  *    the agfl for the ags in which the blocks live: 3 * sector size
 557  *    the superblock for the free block count: sector size
 558  *    the allocation btrees: 3 exts * 2 trees * (2 * max depth - 1) * block size
 559  */
 560 #define XFS_CALC_RENAME_LOG_RES(mp) \
 561         (MAX( \
 562          ((4 * (mp)->m_sb.sb_inodesize) + \
 563           (2 * XFS_DIROP_LOG_RES(mp)) + \
 564           (128 * (4 + 2 * XFS_DIROP_LOG_COUNT(mp)))), \
 565          ((3 * (mp)->m_sb.sb_sectsize) + \
 566           (3 * (mp)->m_sb.sb_sectsize) + \
 567           (mp)->m_sb.sb_sectsize + \
 568           XFS_ALLOCFREE_LOG_RES(mp, 3) + \
 569           (128 * (7 + XFS_ALLOCFREE_LOG_COUNT(mp, 3))))))
 570
 571 #define XFS_RENAME_LOG_RES(mp)  ((mp)->m_reservations.tr_rename)
 572
 573 /*
 574  * For creating a link to an inode:
 575  *    the parent directory inode: inode size
 576  *    the linked inode: inode size
 577  *    the directory btree could split: (max depth + v2) * dir block size
 578  *    the directory bmap btree could join or split: (max depth + v2) * blocksize
 579  * And the bmap_finish transaction can free some bmap blocks giving:
 580  *    the agf for the ag in which the blocks live: sector size
 581  *    the agfl for the ag in which the blocks live: sector size
 582  *    the superblock for the free block count: sector size
 583  *    the allocation btrees: 2 trees * (2 * max depth - 1) * block size
 584  */
 585 #define XFS_CALC_LINK_LOG_RES(mp) \
 586         (MAX( \
 587          ((mp)->m_sb.sb_inodesize + \
 588           (mp)->m_sb.sb_inodesize + \
 589           XFS_DIROP_LOG_RES(mp) + \
 590           (128 * (2 + XFS_DIROP_LOG_COUNT(mp)))), \
 591          ((mp)->m_sb.sb_sectsize + \
 592           (mp)->m_sb.sb_sectsize + \
 593           (mp)->m_sb.sb_sectsize + \
 594           XFS_ALLOCFREE_LOG_RES(mp, 1) + \
 595           (128 * (3 + XFS_ALLOCFREE_LOG_COUNT(mp, 1))))))
 596
 597 #define XFS_LINK_LOG_RES(mp)    ((mp)->m_reservations.tr_link)
 598
 599 /*
 600  * For removing a directory entry we can modify:
 601  *    the parent directory inode: inode size
 602  *    the removed inode: inode size
 603  *    the directory btree could join: (max depth + v2) * dir block size
 604  *    the directory bmap btree could join or split: (max depth + v2) * blocksize
 605  * And the bmap_finish transaction can free the dir and bmap blocks giving:
 606  *    the agf for the ag in which the blocks live: 2 * sector size
 607  *    the agfl for the ag in which the blocks live: 2 * sector size
 608  *    the superblock for the free block count: sector size
 609  *    the allocation btrees: 2 exts * 2 trees * (2 * max depth - 1) * block size
 610  */
 611 #define XFS_CALC_REMOVE_LOG_RES(mp)     \
 612         (MAX( \
 613          ((mp)->m_sb.sb_inodesize + \
 614           (mp)->m_sb.sb_inodesize + \
 615           XFS_DIROP_LOG_RES(mp) + \
 616           (128 * (2 + XFS_DIROP_LOG_COUNT(mp)))), \
 617          ((2 * (mp)->m_sb.sb_sectsize) + \
 618           (2 * (mp)->m_sb.sb_sectsize) + \
 619           (mp)->m_sb.sb_sectsize + \
 620           XFS_ALLOCFREE_LOG_RES(mp, 2) + \
 621           (128 * (5 + XFS_ALLOCFREE_LOG_COUNT(mp, 2))))))
 622
 623 #define XFS_REMOVE_LOG_RES(mp)  ((mp)->m_reservations.tr_remove)
 624
 625 /*
 626  * For symlink we can modify:
 627  *    the parent directory inode: inode size
 628  *    the new inode: inode size
 629  *    the inode btree entry: 1 block
 630  *    the directory btree: (max depth + v2) * dir block size
 631  *    the directory inode\'s bmap btree: (max depth + v2) * block size
 632  *    the blocks for the symlink: 1 KB
 633  * Or in the first xact we allocate some inodes giving:
 634  *    the agi and agf of the ag getting the new inodes: 2 * sectorsize
 635  *    the inode blocks allocated: XFS_IALLOC_BLOCKS * blocksize
 636  *    the inode btree: max depth * blocksize
 637  *    the allocation btrees: 2 trees * (2 * max depth - 1) * block size
 638  */
 639 #define XFS_CALC_SYMLINK_LOG_RES(mp)            \
 640         (MAX( \
 641          ((mp)->m_sb.sb_inodesize + \
 642           (mp)->m_sb.sb_inodesize + \
 643           XFS_FSB_TO_B(mp, 1) + \
 644           XFS_DIROP_LOG_RES(mp) + \
 645           1024 + \
 646           (128 * (4 + XFS_DIROP_LOG_COUNT(mp)))), \
 647          (2 * (mp)->m_sb.sb_sectsize + \
 648           XFS_FSB_TO_B((mp), XFS_IALLOC_BLOCKS((mp))) + \
 649           XFS_FSB_TO_B((mp), XFS_IN_MAXLEVELS(mp)) + \
 650           XFS_ALLOCFREE_LOG_RES(mp, 1) + \
 651           (128 * (2 + XFS_IALLOC_BLOCKS(mp) + XFS_IN_MAXLEVELS(mp) + \
 652            XFS_ALLOCFREE_LOG_COUNT(mp, 1))))))
 653
 654 #define XFS_SYMLINK_LOG_RES(mp) ((mp)->m_reservations.tr_symlink)
 655
 656 /*
 657  * For create we can modify:
 658  *    the parent directory inode: inode size
 659  *    the new inode: inode size
 660  *    the inode btree entry: block size
 661  *    the superblock for the nlink flag: sector size
 662  *    the directory btree: (max depth + v2) * dir block size
 663  *    the directory inode\'s bmap btree: (max depth + v2) * block size
 664  * Or in the first xact we allocate some inodes giving:
 665  *    the agi and agf of the ag getting the new inodes: 2 * sectorsize
 666  *    the superblock for the nlink flag: sector size
 667  *    the inode blocks allocated: XFS_IALLOC_BLOCKS * blocksize
 668  *    the inode btree: max depth * blocksize
 669  *    the allocation btrees: 2 trees * (max depth - 1) * block size
 670  */
 671 #define XFS_CALC_CREATE_LOG_RES(mp)             \
 672         (MAX( \
 673          ((mp)->m_sb.sb_inodesize + \
 674           (mp)->m_sb.sb_inodesize + \
 675           (mp)->m_sb.sb_sectsize + \
 676           XFS_FSB_TO_B(mp, 1) + \
 677           XFS_DIROP_LOG_RES(mp) + \
 678           (128 * (3 + XFS_DIROP_LOG_COUNT(mp)))), \
 679          (3 * (mp)->m_sb.sb_sectsize + \
 680           XFS_FSB_TO_B((mp), XFS_IALLOC_BLOCKS((mp))) + \
 681           XFS_FSB_TO_B((mp), XFS_IN_MAXLEVELS(mp)) + \
 682           XFS_ALLOCFREE_LOG_RES(mp, 1) + \
 683           (128 * (2 + XFS_IALLOC_BLOCKS(mp) + XFS_IN_MAXLEVELS(mp) + \
 684            XFS_ALLOCFREE_LOG_COUNT(mp, 1))))))
 685
 686 #define XFS_CREATE_LOG_RES(mp)  ((mp)->m_reservations.tr_create)
 687
 688 /*
 689  * Making a new directory is the same as creating a new file.
 690  */
 691 #define XFS_CALC_MKDIR_LOG_RES(mp)      XFS_CALC_CREATE_LOG_RES(mp)
 692
 693 #define XFS_MKDIR_LOG_RES(mp)   ((mp)->m_reservations.tr_mkdir)
 694
 695 /*
 696  * In freeing an inode we can modify:
 697  *    the inode being freed: inode size
 698  *    the super block free inode counter: sector size
 699  *    the agi hash list and counters: sector size
 700  *    the inode btree entry: block size
 701  *    the on disk inode before ours in the agi hash list: inode cluster size
 702  */
 703 #define XFS_CALC_IFREE_LOG_RES(mp) \
 704         ((mp)->m_sb.sb_inodesize + \
 705          (mp)->m_sb.sb_sectsize + \
 706          (mp)->m_sb.sb_sectsize + \
 707          XFS_FSB_TO_B((mp), 1) + \
 708          MAX((__uint16_t)XFS_FSB_TO_B((mp), 1), XFS_INODE_CLUSTER_SIZE(mp)) + \
 709          (128 * 5))
 710
 711 #define XFS_IFREE_LOG_RES(mp)   ((mp)->m_reservations.tr_ifree)
 712
 713 /*
 714  * When only changing the inode we log the inode and possibly the superblock
 715  * We also add a bit of slop for the transaction stuff.
 716  */
 717 #define XFS_CALC_ICHANGE_LOG_RES(mp)    ((mp)->m_sb.sb_inodesize + \
 718                                          (mp)->m_sb.sb_sectsize + 512)
 719
 720 #define XFS_ICHANGE_LOG_RES(mp) ((mp)->m_reservations.tr_ichange)
 721
 722 /*
 723  * Growing the data section of the filesystem.
 724  *      superblock
 725  *      agi and agf
 726  *      allocation btrees
 727  */
 728 #define XFS_CALC_GROWDATA_LOG_RES(mp) \
 729         ((mp)->m_sb.sb_sectsize * 3 + \
 730          XFS_ALLOCFREE_LOG_RES(mp, 1) + \
 731          (128 * (3 + XFS_ALLOCFREE_LOG_COUNT(mp, 1))))
 732
 733 #define XFS_GROWDATA_LOG_RES(mp)    ((mp)->m_reservations.tr_growdata)
 734
 735 /*
 736  * Growing the rt section of the filesystem.
 737  * In the first set of transactions (ALLOC) we allocate space to the
 738  * bitmap or summary files.
 739  *      superblock: sector size
 740  *      agf of the ag from which the extent is allocated: sector size
 741  *      bmap btree for bitmap/summary inode: max depth * blocksize
 742  *      bitmap/summary inode: inode size
 743  *      allocation btrees for 1 block alloc: 2 * (2 * maxdepth - 1) * blocksize
 744  */
 745 #define XFS_CALC_GROWRTALLOC_LOG_RES(mp) \
 746         (2 * (mp)->m_sb.sb_sectsize + \
 747          XFS_FSB_TO_B((mp), XFS_BM_MAXLEVELS(mp, XFS_DATA_FORK)) + \
 748          (mp)->m_sb.sb_inodesize + \
 749          XFS_ALLOCFREE_LOG_RES(mp, 1) + \
 750          (128 * \
 751           (3 + XFS_BM_MAXLEVELS(mp, XFS_DATA_FORK) + \
 752            XFS_ALLOCFREE_LOG_COUNT(mp, 1))))
 753
 754 #define XFS_GROWRTALLOC_LOG_RES(mp)     ((mp)->m_reservations.tr_growrtalloc)
 755
 756 /*
 757  * Growing the rt section of the filesystem.
 758  * In the second set of transactions (ZERO) we zero the new metadata blocks.
 759  *      one bitmap/summary block: blocksize
 760  */
 761 #define XFS_CALC_GROWRTZERO_LOG_RES(mp) \
 762         ((mp)->m_sb.sb_blocksize + 128)
 763
 764 #define XFS_GROWRTZERO_LOG_RES(mp)      ((mp)->m_reservations.tr_growrtzero)
 765
 766 /*
 767  * Growing the rt section of the filesystem.
 768  * In the third set of transactions (FREE) we update metadata without
 769  * allocating any new blocks.
 770  *      superblock: sector size
 771  *      bitmap inode: inode size
 772  *      summary inode: inode size
 773  *      one bitmap block: blocksize
 774  *      summary blocks: new summary size
 775  */
 776 #define XFS_CALC_GROWRTFREE_LOG_RES(mp) \
 777         ((mp)->m_sb.sb_sectsize + \
 778          2 * (mp)->m_sb.sb_inodesize + \
 779          (mp)->m_sb.sb_blocksize + \
 780          (mp)->m_rsumsize + \
 781          (128 * 5))
 782
 783 #define XFS_GROWRTFREE_LOG_RES(mp)      ((mp)->m_reservations.tr_growrtfree)
 784
 785 /*
 786  * Logging the inode modification timestamp on a synchronous write.
 787  *      inode
 788  */
 789 #define XFS_CALC_SWRITE_LOG_RES(mp) \
 790         ((mp)->m_sb.sb_inodesize + 128)
 791
 792 #define XFS_SWRITE_LOG_RES(mp)  ((mp)->m_reservations.tr_swrite)
 793
 794 /*
 795  * Logging the inode timestamps on an fsync -- same as SWRITE
 796  * as long as SWRITE logs the entire inode core
 797  */
 798 #define XFS_FSYNC_TS_LOG_RES(mp)        ((mp)->m_reservations.tr_swrite)
 799
 800 /*
 801  * Logging the inode mode bits when writing a setuid/setgid file
 802  *      inode
 803  */
 804 #define XFS_CALC_WRITEID_LOG_RES(mp) \
 805         ((mp)->m_sb.sb_inodesize + 128)
 806
 807 #define XFS_WRITEID_LOG_RES(mp) ((mp)->m_reservations.tr_swrite)
 808
 809 /*
 810  * Converting the inode from non-attributed to attributed.
 811  *      the inode being converted: inode size
 812  *      agf block and superblock (for block allocation)
 813  *      the new block (directory sized)
 814  *      bmap blocks for the new directory block
 815  *      allocation btrees
 816  */
 817 #define XFS_CALC_ADDAFORK_LOG_RES(mp)   \
 818         ((mp)->m_sb.sb_inodesize + \
 819          (mp)->m_sb.sb_sectsize * 2 + \
 820          (mp)->m_dirblksize + \
 821          (XFS_DIR_IS_V1(mp) ? 0 : \
 822             XFS_FSB_TO_B(mp, (XFS_DAENTER_BMAP1B(mp, XFS_DATA_FORK) + 1))) + \
 823          XFS_ALLOCFREE_LOG_RES(mp, 1) + \
 824          (128 * (4 + \
 825                  (XFS_DIR_IS_V1(mp) ? 0 : \
 826                          XFS_DAENTER_BMAP1B(mp, XFS_DATA_FORK) + 1) + \
 827                  XFS_ALLOCFREE_LOG_COUNT(mp, 1))))
 828
 829 #define XFS_ADDAFORK_LOG_RES(mp)        ((mp)->m_reservations.tr_addafork)
 830
 831 /*
 832  * Removing the attribute fork of a file
 833  *    the inode being truncated: inode size
 834  *    the inode\'s bmap btree: max depth * block size
 835  * And the bmap_finish transaction can free the blocks and bmap blocks:
 836  *    the agf for each of the ags: 4 * sector size
 837  *    the agfl for each of the ags: 4 * sector size
 838  *    the super block to reflect the freed blocks: sector size
 839  *    worst case split in allocation btrees per extent assuming 4 extents:
 840  *              4 exts * 2 trees * (2 * max depth - 1) * block size
 841  */
 842 #define XFS_CALC_ATTRINVAL_LOG_RES(mp)  \
 843         (MAX( \
 844          ((mp)->m_sb.sb_inodesize + \
 845           XFS_FSB_TO_B((mp), XFS_BM_MAXLEVELS(mp, XFS_ATTR_FORK)) + \
 846           (128 * (1 + XFS_BM_MAXLEVELS(mp, XFS_ATTR_FORK)))), \
 847          ((4 * (mp)->m_sb.sb_sectsize) + \
 848           (4 * (mp)->m_sb.sb_sectsize) + \
 849           (mp)->m_sb.sb_sectsize + \
 850           XFS_ALLOCFREE_LOG_RES(mp, 4) + \
 851           (128 * (9 + XFS_ALLOCFREE_LOG_COUNT(mp, 4))))))
 852
 853 #define XFS_ATTRINVAL_LOG_RES(mp)       ((mp)->m_reservations.tr_attrinval)
 854
 855 /*
 856  * Setting an attribute.
 857  *      the inode getting the attribute
 858  *      the superblock for allocations
 859  *      the agfs extents are allocated from
 860  *      the attribute btree * max depth
 861  *      the inode allocation btree
 862  * Since attribute transaction space is dependent on the size of the attribute,
 863  * the calculation is done partially at mount time and partially at runtime.
 864  */
 865 #define XFS_CALC_ATTRSET_LOG_RES(mp)    \
 866         ((mp)->m_sb.sb_inodesize + \
 867          (mp)->m_sb.sb_sectsize + \
 868           XFS_FSB_TO_B((mp), XFS_DA_NODE_MAXDEPTH) + \
 869           (128 * (2 + XFS_DA_NODE_MAXDEPTH)))
 870
 871 #define XFS_ATTRSET_LOG_RES(mp, ext)    \
 872         ((mp)->m_reservations.tr_attrset + \
 873          (ext * (mp)->m_sb.sb_sectsize) + \
 874          (ext * XFS_FSB_TO_B((mp), XFS_BM_MAXLEVELS(mp, XFS_ATTR_FORK))) + \
 875          (128 * (ext + (ext * XFS_BM_MAXLEVELS(mp, XFS_ATTR_FORK)))))
 876
 877 /*
 878  * Removing an attribute.
 879  *    the inode: inode size
 880  *    the attribute btree could join: max depth * block size
 881  *    the inode bmap btree could join or split: max depth * block size
 882  * And the bmap_finish transaction can free the attr blocks freed giving:
 883  *    the agf for the ag in which the blocks live: 2 * sector size
 884  *    the agfl for the ag in which the blocks live: 2 * sector size
 885  *    the superblock for the free block count: sector size
 886  *    the allocation btrees: 2 exts * 2 trees * (2 * max depth - 1) * block size
 887  */
 888 #define XFS_CALC_ATTRRM_LOG_RES(mp)     \
 889         (MAX( \
 890           ((mp)->m_sb.sb_inodesize + \
 891           XFS_FSB_TO_B((mp), XFS_DA_NODE_MAXDEPTH) + \
 892           XFS_FSB_TO_B((mp), XFS_BM_MAXLEVELS(mp, XFS_ATTR_FORK)) + \
 893           (128 * (1 + XFS_DA_NODE_MAXDEPTH + XFS_BM_MAXLEVELS(mp, XFS_DATA_FORK)))), \
 894          ((2 * (mp)->m_sb.sb_sectsize) + \
 895           (2 * (mp)->m_sb.sb_sectsize) + \
 896           (mp)->m_sb.sb_sectsize + \
 897           XFS_ALLOCFREE_LOG_RES(mp, 2) + \
 898           (128 * (5 + XFS_ALLOCFREE_LOG_COUNT(mp, 2))))))
 899
 900 #define XFS_ATTRRM_LOG_RES(mp)  ((mp)->m_reservations.tr_attrrm)
 901
 902 /*
 903  * Clearing a bad agino number in an agi hash bucket.
 904  */
 905 #define XFS_CALC_CLEAR_AGI_BUCKET_LOG_RES(mp) \
 906         ((mp)->m_sb.sb_sectsize + 128)
 907
 908 #define XFS_CLEAR_AGI_BUCKET_LOG_RES(mp)  ((mp)->m_reservations.tr_clearagi)
 909
 910
 911 /*
 912  * Various log count values.
 913  */
 914 #define XFS_DEFAULT_LOG_COUNT           1
 915 #define XFS_DEFAULT_PERM_LOG_COUNT      2
 916 #define XFS_ITRUNCATE_LOG_COUNT         2
 917 #define XFS_CREATE_LOG_COUNT            2
 918 #define XFS_MKDIR_LOG_COUNT             3
 919 #define XFS_SYMLINK_LOG_COUNT           3
 920 #define XFS_REMOVE_LOG_COUNT            2
 921 #define XFS_LINK_LOG_COUNT              2
 922 #define XFS_RENAME_LOG_COUNT            2
 923 #define XFS_WRITE_LOG_COUNT             2
 924 #define XFS_ADDAFORK_LOG_COUNT          2
 925 #define XFS_ATTRINVAL_LOG_COUNT         1
 926 #define XFS_ATTRSET_LOG_COUNT           3
 927 #define XFS_ATTRRM_LOG_COUNT            3
 928
 929 /*
 930  * Here we centralize the specification of XFS meta-data buffer
 931  * reference count values.  This determine how hard the buffer
 932  * cache tries to hold onto the buffer.
 933  */
 934 #define XFS_AGF_REF             4
 935 #define XFS_AGI_REF             4
 936 #define XFS_AGFL_REF            3
 937 #define XFS_INO_BTREE_REF       3
 938 #define XFS_ALLOC_BTREE_REF     2
 939 #define XFS_BMAP_BTREE_REF      2
 940 #define XFS_DIR_BTREE_REF       2
 941 #define XFS_ATTR_BTREE_REF      1
 942 #define XFS_INO_REF             1
 943 #define XFS_DQUOT_REF           1
 944
 945 #ifdef __KERNEL__
 946 /*
 947  * XFS transaction mechanism exported interfaces that are
 948  * actually macros.
 949  */
 950 #define xfs_trans_get_log_res(tp)       ((tp)->t_log_res)
 951 #define xfs_trans_get_log_count(tp)     ((tp)->t_log_count)
 952 #define xfs_trans_get_block_res(tp)     ((tp)->t_blk_res)
 953 #define xfs_trans_set_sync(tp)          ((tp)->t_flags |= XFS_TRANS_SYNC)
 954
 955 #ifdef DEBUG
 956 #define xfs_trans_agblocks_delta(tp, d) ((tp)->t_ag_freeblks_delta += (long)d)
 957 #define xfs_trans_agflist_delta(tp, d)  ((tp)->t_ag_flist_delta += (long)d)
 958 #define xfs_trans_agbtree_delta(tp, d)  ((tp)->t_ag_btree_delta += (long)d)
 959 #else
 960 #define xfs_trans_agblocks_delta(tp, d)
 961 #define xfs_trans_agflist_delta(tp, d)
 962 #define xfs_trans_agbtree_delta(tp, d)
 963 #endif
 964
 965 /*
 966  * XFS transaction mechanism exported interfaces.
 967  */
 968 void            xfs_trans_init(struct xfs_mount *);
 969 xfs_trans_t     *xfs_trans_alloc(struct xfs_mount *, uint);
 970 xfs_trans_t     *_xfs_trans_alloc(struct xfs_mount *, uint);
 971 xfs_trans_t     *xfs_trans_dup(xfs_trans_t *);
 972 int             xfs_trans_reserve(xfs_trans_t *, uint, uint, uint,
 973                                   uint, uint);
 974 void            xfs_trans_callback(xfs_trans_t *,
 975                                    void (*)(xfs_trans_t *, void *), void *);
 976 void            xfs_trans_mod_sb(xfs_trans_t *, uint, long);
 977 struct xfs_buf  *xfs_trans_get_buf(xfs_trans_t *, struct xfs_buftarg *, xfs_daddr_t,
 978                                    int, uint);
 979 int             xfs_trans_read_buf(struct xfs_mount *, xfs_trans_t *,
 980                                    struct xfs_buftarg *, xfs_daddr_t, int, uint,
 981                                    struct xfs_buf **);
 982 struct xfs_buf  *xfs_trans_getsb(xfs_trans_t *, struct xfs_mount *, int);
 983
 984 void            xfs_trans_brelse(xfs_trans_t *, struct xfs_buf *);
 985 void            xfs_trans_bjoin(xfs_trans_t *, struct xfs_buf *);
 986 void            xfs_trans_bhold(xfs_trans_t *, struct xfs_buf *);
 987 void            xfs_trans_bhold_until_committed(xfs_trans_t *, struct xfs_buf *);
 988 void            xfs_trans_binval(xfs_trans_t *, struct xfs_buf *);
 989 void            xfs_trans_inode_buf(xfs_trans_t *, struct xfs_buf *);
 990 void            xfs_trans_dquot_buf(xfs_trans_t *, struct xfs_buf *, uint);
 991 void            xfs_trans_inode_alloc_buf(xfs_trans_t *, struct xfs_buf *);
 992 int             xfs_trans_iget(struct xfs_mount *, xfs_trans_t *,
 993                                xfs_ino_t , uint, struct xfs_inode **);
 994 void            xfs_trans_iput(xfs_trans_t *, struct xfs_inode *, uint);
 995 void            xfs_trans_ijoin(xfs_trans_t *, struct xfs_inode *, uint);
 996 void            xfs_trans_ihold(xfs_trans_t *, struct xfs_inode *);
 997 void            xfs_trans_ihold_release(xfs_trans_t *, struct xfs_inode *);
 998 void            xfs_trans_log_buf(xfs_trans_t *, struct xfs_buf *, uint, uint);
 999 void            xfs_trans_log_inode(xfs_trans_t *, struct xfs_inode *, uint);
1000 struct xfs_efi_log_item *xfs_trans_get_efi(xfs_trans_t *, uint);
1001 void            xfs_efi_release(struct xfs_efi_log_item *, uint);
1002 void            xfs_trans_log_efi_extent(xfs_trans_t *,
1003                                          struct xfs_efi_log_item *,
1004                                          xfs_fsblock_t,
1005                                          xfs_extlen_t);
1006 struct xfs_efd_log_item *xfs_trans_get_efd(xfs_trans_t *,
1007                                   struct xfs_efi_log_item *,
1008                                   uint);
1009 void            xfs_trans_log_efd_extent(xfs_trans_t *,
1010                                          struct xfs_efd_log_item *,
1011                                          xfs_fsblock_t,
1012                                          xfs_extlen_t);
1013 void            xfs_trans_log_create_rpc(xfs_trans_t *, int, xfs_ino_t);
1014 void            xfs_trans_log_setattr_rpc(xfs_trans_t *, int);
1015 int             xfs_trans_commit(xfs_trans_t *, uint flags, xfs_lsn_t *);
1016 void            xfs_trans_commit_async(struct xfs_mount *);
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 /*
1028  * Not necessarily exported, but used outside a single file.
1029  */
1030 int             xfs_trans_lsn_danger(struct xfs_mount *, xfs_lsn_t);
1031
1032 #endif  /* __KERNEL__ */
1033
1034 #endif  /* __XFS_TRANS_H__ */