1 /* 2 * Copyright (c) 2000-2002,2005 Silicon Graphics, Inc. 3 * All Rights Reserved. 4 * 5 * This program is free software; you can redistribute it and/or 6 * modify it under the terms of the GNU General Public License as 7 * published by the Free Software Foundation. 8 * 9 * This program is distributed in the hope that it would be useful, 10 * but WITHOUT ANY WARRANTY; without even the implied warranty of 11 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the 12 * GNU General Public License for more details. 13 * 14 * You should have received a copy of the GNU General Public License 15 * along with this program; if not, write the Free Software Foundation, 16 * Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA 17 */ 18 #ifndef __XFS_TRANS_H__ 19 #define __XFS_TRANS_H__ 20 21 /* kernel only transaction subsystem defines */ 22 23 struct xfs_buf; 24 struct xfs_buftarg; 25 struct xfs_efd_log_item; 26 struct xfs_efi_log_item; 27 struct xfs_inode; 28 struct xfs_item_ops; 29 struct xfs_log_iovec; 30 struct xfs_log_item_desc; 31 struct xfs_mount; 32 struct xfs_trans; 33 struct xfs_trans_res; 34 struct xfs_dquot_acct; 35 struct xfs_rud_log_item; 36 struct xfs_rui_log_item; 37 struct xfs_btree_cur; 38 struct xfs_cui_log_item; 39 struct xfs_cud_log_item; 40 struct xfs_defer_ops; 41 struct xfs_bui_log_item; 42 struct xfs_bud_log_item; 43 44 typedef struct xfs_log_item { 45 struct list_head li_ail; /* AIL pointers */ 46 xfs_lsn_t li_lsn; /* last on-disk lsn */ 47 struct xfs_log_item_desc *li_desc; /* ptr to current desc*/ 48 struct xfs_mount *li_mountp; /* ptr to fs mount */ 49 struct xfs_ail *li_ailp; /* ptr to AIL */ 50 uint li_type; /* item type */ 51 uint li_flags; /* misc flags */ 52 struct xfs_buf *li_buf; /* real buffer pointer */ 53 struct list_head li_bio_list; /* buffer item list */ 54 void (*li_cb)(struct xfs_buf *, 55 struct xfs_log_item *); 56 /* buffer item iodone */ 57 /* callback func */ 58 const struct xfs_item_ops *li_ops; /* function list */ 59 60 /* delayed logging */ 61 struct list_head li_cil; /* CIL pointers */ 62 struct xfs_log_vec *li_lv; /* active log vector */ 63 struct xfs_log_vec *li_lv_shadow; /* standby vector */ 64 xfs_lsn_t li_seq; /* CIL commit seq */ 65 } xfs_log_item_t; 66 67 #define XFS_LI_IN_AIL 0x1 68 #define XFS_LI_ABORTED 0x2 69 #define XFS_LI_FAILED 0x4 70 71 #define XFS_LI_FLAGS \ 72 { XFS_LI_IN_AIL, "IN_AIL" }, \ 73 { XFS_LI_ABORTED, "ABORTED" }, \ 74 { XFS_LI_FAILED, "FAILED" } 75 76 struct xfs_item_ops { 77 void (*iop_size)(xfs_log_item_t *, int *, int *); 78 void (*iop_format)(xfs_log_item_t *, struct xfs_log_vec *); 79 void (*iop_pin)(xfs_log_item_t *); 80 void (*iop_unpin)(xfs_log_item_t *, int remove); 81 uint (*iop_push)(struct xfs_log_item *, struct list_head *); 82 void (*iop_unlock)(xfs_log_item_t *); 83 xfs_lsn_t (*iop_committed)(xfs_log_item_t *, xfs_lsn_t); 84 void (*iop_committing)(xfs_log_item_t *, xfs_lsn_t); 85 void (*iop_error)(xfs_log_item_t *, xfs_buf_t *); 86 }; 87 88 void xfs_log_item_init(struct xfs_mount *mp, struct xfs_log_item *item, 89 int type, const struct xfs_item_ops *ops); 90 91 /* 92 * Return values for the iop_push() routines. 93 */ 94 #define XFS_ITEM_SUCCESS 0 95 #define XFS_ITEM_PINNED 1 96 #define XFS_ITEM_LOCKED 2 97 #define XFS_ITEM_FLUSHING 3 98 99 100 /* 101 * This is the structure maintained for every active transaction. 102 */ 103 typedef struct xfs_trans { 104 unsigned int t_magic; /* magic number */ 105 unsigned int t_log_res; /* amt of log space resvd */ 106 unsigned int t_log_count; /* count for perm log res */ 107 unsigned int t_blk_res; /* # of blocks resvd */ 108 unsigned int t_blk_res_used; /* # of resvd blocks used */ 109 unsigned int t_rtx_res; /* # of rt extents resvd */ 110 unsigned int t_rtx_res_used; /* # of resvd rt extents used */ 111 struct xlog_ticket *t_ticket; /* log mgr ticket */ 112 struct xfs_mount *t_mountp; /* ptr to fs mount struct */ 113 struct xfs_dquot_acct *t_dqinfo; /* acctg info for dquots */ 114 unsigned int t_flags; /* misc flags */ 115 int64_t t_icount_delta; /* superblock icount change */ 116 int64_t t_ifree_delta; /* superblock ifree change */ 117 int64_t t_fdblocks_delta; /* superblock fdblocks chg */ 118 int64_t t_res_fdblocks_delta; /* on-disk only chg */ 119 int64_t t_frextents_delta;/* superblock freextents chg*/ 120 int64_t t_res_frextents_delta; /* on-disk only chg */ 121 #if defined(DEBUG) || defined(XFS_WARN) 122 int64_t t_ag_freeblks_delta; /* debugging counter */ 123 int64_t t_ag_flist_delta; /* debugging counter */ 124 int64_t t_ag_btree_delta; /* debugging counter */ 125 #endif 126 int64_t t_dblocks_delta;/* superblock dblocks change */ 127 int64_t t_agcount_delta;/* superblock agcount change */ 128 int64_t t_imaxpct_delta;/* superblock imaxpct change */ 129 int64_t t_rextsize_delta;/* superblock rextsize chg */ 130 int64_t t_rbmblocks_delta;/* superblock rbmblocks chg */ 131 int64_t t_rblocks_delta;/* superblock rblocks change */ 132 int64_t t_rextents_delta;/* superblocks rextents chg */ 133 int64_t t_rextslog_delta;/* superblocks rextslog chg */ 134 struct list_head t_items; /* log item descriptors */ 135 struct list_head t_busy; /* list of busy extents */ 136 unsigned long t_pflags; /* saved process flags state */ 137 } xfs_trans_t; 138 139 /* 140 * XFS transaction mechanism exported interfaces that are 141 * actually macros. 142 */ 143 #define xfs_trans_set_sync(tp) ((tp)->t_flags |= XFS_TRANS_SYNC) 144 145 #if defined(DEBUG) || defined(XFS_WARN) 146 #define xfs_trans_agblocks_delta(tp, d) ((tp)->t_ag_freeblks_delta += (int64_t)d) 147 #define xfs_trans_agflist_delta(tp, d) ((tp)->t_ag_flist_delta += (int64_t)d) 148 #define xfs_trans_agbtree_delta(tp, d) ((tp)->t_ag_btree_delta += (int64_t)d) 149 #else 150 #define xfs_trans_agblocks_delta(tp, d) 151 #define xfs_trans_agflist_delta(tp, d) 152 #define xfs_trans_agbtree_delta(tp, d) 153 #endif 154 155 /* 156 * XFS transaction mechanism exported interfaces. 157 */ 158 int xfs_trans_alloc(struct xfs_mount *mp, struct xfs_trans_res *resp, 159 uint blocks, uint rtextents, uint flags, 160 struct xfs_trans **tpp); 161 int xfs_trans_alloc_empty(struct xfs_mount *mp, 162 struct xfs_trans **tpp); 163 void xfs_trans_mod_sb(xfs_trans_t *, uint, int64_t); 164 165 struct xfs_buf *xfs_trans_get_buf_map(struct xfs_trans *tp, 166 struct xfs_buftarg *target, 167 struct xfs_buf_map *map, int nmaps, 168 uint flags); 169 170 static inline struct xfs_buf * 171 xfs_trans_get_buf( 172 struct xfs_trans *tp, 173 struct xfs_buftarg *target, 174 xfs_daddr_t blkno, 175 int numblks, 176 uint flags) 177 { 178 DEFINE_SINGLE_BUF_MAP(map, blkno, numblks); 179 return xfs_trans_get_buf_map(tp, target, &map, 1, flags); 180 } 181 182 int xfs_trans_read_buf_map(struct xfs_mount *mp, 183 struct xfs_trans *tp, 184 struct xfs_buftarg *target, 185 struct xfs_buf_map *map, int nmaps, 186 xfs_buf_flags_t flags, 187 struct xfs_buf **bpp, 188 const struct xfs_buf_ops *ops); 189 190 static inline int 191 xfs_trans_read_buf( 192 struct xfs_mount *mp, 193 struct xfs_trans *tp, 194 struct xfs_buftarg *target, 195 xfs_daddr_t blkno, 196 int numblks, 197 xfs_buf_flags_t flags, 198 struct xfs_buf **bpp, 199 const struct xfs_buf_ops *ops) 200 { 201 DEFINE_SINGLE_BUF_MAP(map, blkno, numblks); 202 return xfs_trans_read_buf_map(mp, tp, target, &map, 1, 203 flags, bpp, ops); 204 } 205 206 struct xfs_buf *xfs_trans_getsb(xfs_trans_t *, struct xfs_mount *, int); 207 208 void xfs_trans_brelse(xfs_trans_t *, struct xfs_buf *); 209 void xfs_trans_bjoin(xfs_trans_t *, struct xfs_buf *); 210 void xfs_trans_bhold(xfs_trans_t *, struct xfs_buf *); 211 void xfs_trans_bhold_release(xfs_trans_t *, struct xfs_buf *); 212 void xfs_trans_binval(xfs_trans_t *, struct xfs_buf *); 213 void xfs_trans_inode_buf(xfs_trans_t *, struct xfs_buf *); 214 void xfs_trans_stale_inode_buf(xfs_trans_t *, struct xfs_buf *); 215 bool xfs_trans_ordered_buf(xfs_trans_t *, struct xfs_buf *); 216 void xfs_trans_dquot_buf(xfs_trans_t *, struct xfs_buf *, uint); 217 void xfs_trans_inode_alloc_buf(xfs_trans_t *, struct xfs_buf *); 218 void xfs_trans_ichgtime(struct xfs_trans *, struct xfs_inode *, int); 219 void xfs_trans_ijoin(struct xfs_trans *, struct xfs_inode *, uint); 220 void xfs_trans_log_buf(struct xfs_trans *, struct xfs_buf *, uint, 221 uint); 222 void xfs_trans_dirty_buf(struct xfs_trans *, struct xfs_buf *); 223 void xfs_trans_log_inode(xfs_trans_t *, struct xfs_inode *, uint); 224 225 void xfs_extent_free_init_defer_op(void); 226 struct xfs_efd_log_item *xfs_trans_get_efd(struct xfs_trans *, 227 struct xfs_efi_log_item *, 228 uint); 229 int xfs_trans_free_extent(struct xfs_trans *, 230 struct xfs_efd_log_item *, xfs_fsblock_t, 231 xfs_extlen_t, struct xfs_owner_info *); 232 int xfs_trans_commit(struct xfs_trans *); 233 int xfs_trans_roll(struct xfs_trans **); 234 int xfs_trans_roll_inode(struct xfs_trans **, struct xfs_inode *); 235 void xfs_trans_cancel(xfs_trans_t *); 236 int xfs_trans_ail_init(struct xfs_mount *); 237 void xfs_trans_ail_destroy(struct xfs_mount *); 238 239 void xfs_trans_buf_set_type(struct xfs_trans *, struct xfs_buf *, 240 enum xfs_blft); 241 void xfs_trans_buf_copy_type(struct xfs_buf *dst_bp, 242 struct xfs_buf *src_bp); 243 244 extern kmem_zone_t *xfs_trans_zone; 245 extern kmem_zone_t *xfs_log_item_desc_zone; 246 247 /* rmap updates */ 248 enum xfs_rmap_intent_type; 249 250 void xfs_rmap_update_init_defer_op(void); 251 struct xfs_rud_log_item *xfs_trans_get_rud(struct xfs_trans *tp, 252 struct xfs_rui_log_item *ruip); 253 int xfs_trans_log_finish_rmap_update(struct xfs_trans *tp, 254 struct xfs_rud_log_item *rudp, enum xfs_rmap_intent_type type, 255 uint64_t owner, int whichfork, xfs_fileoff_t startoff, 256 xfs_fsblock_t startblock, xfs_filblks_t blockcount, 257 xfs_exntst_t state, struct xfs_btree_cur **pcur); 258 259 /* refcount updates */ 260 enum xfs_refcount_intent_type; 261 262 void xfs_refcount_update_init_defer_op(void); 263 struct xfs_cud_log_item *xfs_trans_get_cud(struct xfs_trans *tp, 264 struct xfs_cui_log_item *cuip); 265 int xfs_trans_log_finish_refcount_update(struct xfs_trans *tp, 266 struct xfs_cud_log_item *cudp, struct xfs_defer_ops *dfops, 267 enum xfs_refcount_intent_type type, xfs_fsblock_t startblock, 268 xfs_extlen_t blockcount, xfs_fsblock_t *new_fsb, 269 xfs_extlen_t *new_len, struct xfs_btree_cur **pcur); 270 271 /* mapping updates */ 272 enum xfs_bmap_intent_type; 273 274 void xfs_bmap_update_init_defer_op(void); 275 struct xfs_bud_log_item *xfs_trans_get_bud(struct xfs_trans *tp, 276 struct xfs_bui_log_item *buip); 277 int xfs_trans_log_finish_bmap_update(struct xfs_trans *tp, 278 struct xfs_bud_log_item *rudp, struct xfs_defer_ops *dfops, 279 enum xfs_bmap_intent_type type, struct xfs_inode *ip, 280 int whichfork, xfs_fileoff_t startoff, xfs_fsblock_t startblock, 281 xfs_filblks_t *blockcount, xfs_exntst_t state); 282 283 #endif /* __XFS_TRANS_H__ */ 284