2 * Copyright (c) 2000-2002,2005 Silicon Graphics, Inc.
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.
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.
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
18 #ifndef __XFS_TRANS_H__
19 #define __XFS_TRANS_H__
21 /* kernel only transaction subsystem defines */
25 struct xfs_efd_log_item;
26 struct xfs_efi_log_item;
33 struct xfs_dquot_acct;
34 struct xfs_rud_log_item;
35 struct xfs_rui_log_item;
37 struct xfs_cui_log_item;
38 struct xfs_cud_log_item;
40 struct xfs_bui_log_item;
41 struct xfs_bud_log_item;
43 typedef struct xfs_log_item {
44 struct list_head li_ail; /* AIL pointers */
45 struct list_head li_trans; /* transaction list */
46 xfs_lsn_t li_lsn; /* last on-disk lsn */
47 struct xfs_mount *li_mountp; /* ptr to fs mount */
48 struct xfs_ail *li_ailp; /* ptr to AIL */
49 uint li_type; /* item type */
50 unsigned long li_flags; /* misc flags */
51 struct xfs_buf *li_buf; /* real buffer pointer */
52 struct list_head li_bio_list; /* buffer item list */
53 void (*li_cb)(struct xfs_buf *,
54 struct xfs_log_item *);
55 /* buffer item iodone */
57 const struct xfs_item_ops *li_ops; /* function list */
60 struct list_head li_cil; /* CIL pointers */
61 struct xfs_log_vec *li_lv; /* active log vector */
62 struct xfs_log_vec *li_lv_shadow; /* standby vector */
63 xfs_lsn_t li_seq; /* CIL commit seq */
67 * li_flags use the (set/test/clear)_bit atomic interfaces because updates can
68 * race with each other and we don't want to have to use the AIL lock to
69 * serialise all updates.
71 #define XFS_LI_IN_AIL 0
72 #define XFS_LI_ABORTED 1
73 #define XFS_LI_FAILED 2
74 #define XFS_LI_DIRTY 3 /* log item dirty in transaction */
76 #define XFS_LI_FLAGS \
77 { (1 << XFS_LI_IN_AIL), "IN_AIL" }, \
78 { (1 << XFS_LI_ABORTED), "ABORTED" }, \
79 { (1 << XFS_LI_FAILED), "FAILED" }, \
80 { (1 << XFS_LI_DIRTY), "DIRTY" }
83 void (*iop_size)(xfs_log_item_t *, int *, int *);
84 void (*iop_format)(xfs_log_item_t *, struct xfs_log_vec *);
85 void (*iop_pin)(xfs_log_item_t *);
86 void (*iop_unpin)(xfs_log_item_t *, int remove);
87 uint (*iop_push)(struct xfs_log_item *, struct list_head *);
88 void (*iop_unlock)(xfs_log_item_t *);
89 xfs_lsn_t (*iop_committed)(xfs_log_item_t *, xfs_lsn_t);
90 void (*iop_committing)(xfs_log_item_t *, xfs_lsn_t);
91 void (*iop_error)(xfs_log_item_t *, xfs_buf_t *);
94 void xfs_log_item_init(struct xfs_mount *mp, struct xfs_log_item *item,
95 int type, const struct xfs_item_ops *ops);
98 * Return values for the iop_push() routines.
100 #define XFS_ITEM_SUCCESS 0
101 #define XFS_ITEM_PINNED 1
102 #define XFS_ITEM_LOCKED 2
103 #define XFS_ITEM_FLUSHING 3
107 * This is the structure maintained for every active transaction.
109 typedef struct xfs_trans {
110 unsigned int t_magic; /* magic number */
111 unsigned int t_log_res; /* amt of log space resvd */
112 unsigned int t_log_count; /* count for perm log res */
113 unsigned int t_blk_res; /* # of blocks resvd */
114 unsigned int t_blk_res_used; /* # of resvd blocks used */
115 unsigned int t_rtx_res; /* # of rt extents resvd */
116 unsigned int t_rtx_res_used; /* # of resvd rt extents used */
117 struct xlog_ticket *t_ticket; /* log mgr ticket */
118 struct xfs_mount *t_mountp; /* ptr to fs mount struct */
119 struct xfs_dquot_acct *t_dqinfo; /* acctg info for dquots */
120 struct xfs_defer_ops *t_agfl_dfops; /* optional agfl fixup dfops */
121 unsigned int t_flags; /* misc flags */
122 int64_t t_icount_delta; /* superblock icount change */
123 int64_t t_ifree_delta; /* superblock ifree change */
124 int64_t t_fdblocks_delta; /* superblock fdblocks chg */
125 int64_t t_res_fdblocks_delta; /* on-disk only chg */
126 int64_t t_frextents_delta;/* superblock freextents chg*/
127 int64_t t_res_frextents_delta; /* on-disk only chg */
128 #if defined(DEBUG) || defined(XFS_WARN)
129 int64_t t_ag_freeblks_delta; /* debugging counter */
130 int64_t t_ag_flist_delta; /* debugging counter */
131 int64_t t_ag_btree_delta; /* debugging counter */
133 int64_t t_dblocks_delta;/* superblock dblocks change */
134 int64_t t_agcount_delta;/* superblock agcount change */
135 int64_t t_imaxpct_delta;/* superblock imaxpct change */
136 int64_t t_rextsize_delta;/* superblock rextsize chg */
137 int64_t t_rbmblocks_delta;/* superblock rbmblocks chg */
138 int64_t t_rblocks_delta;/* superblock rblocks change */
139 int64_t t_rextents_delta;/* superblocks rextents chg */
140 int64_t t_rextslog_delta;/* superblocks rextslog chg */
141 struct list_head t_items; /* log item descriptors */
142 struct list_head t_busy; /* list of busy extents */
143 unsigned long t_pflags; /* saved process flags state */
147 * XFS transaction mechanism exported interfaces that are
150 #define xfs_trans_set_sync(tp) ((tp)->t_flags |= XFS_TRANS_SYNC)
152 #if defined(DEBUG) || defined(XFS_WARN)
153 #define xfs_trans_agblocks_delta(tp, d) ((tp)->t_ag_freeblks_delta += (int64_t)d)
154 #define xfs_trans_agflist_delta(tp, d) ((tp)->t_ag_flist_delta += (int64_t)d)
155 #define xfs_trans_agbtree_delta(tp, d) ((tp)->t_ag_btree_delta += (int64_t)d)
157 #define xfs_trans_agblocks_delta(tp, d)
158 #define xfs_trans_agflist_delta(tp, d)
159 #define xfs_trans_agbtree_delta(tp, d)
163 * XFS transaction mechanism exported interfaces.
165 int xfs_trans_alloc(struct xfs_mount *mp, struct xfs_trans_res *resp,
166 uint blocks, uint rtextents, uint flags,
167 struct xfs_trans **tpp);
168 int xfs_trans_alloc_empty(struct xfs_mount *mp,
169 struct xfs_trans **tpp);
170 void xfs_trans_mod_sb(xfs_trans_t *, uint, int64_t);
172 struct xfs_buf *xfs_trans_get_buf_map(struct xfs_trans *tp,
173 struct xfs_buftarg *target,
174 struct xfs_buf_map *map, int nmaps,
177 static inline struct xfs_buf *
179 struct xfs_trans *tp,
180 struct xfs_buftarg *target,
185 DEFINE_SINGLE_BUF_MAP(map, blkno, numblks);
186 return xfs_trans_get_buf_map(tp, target, &map, 1, flags);
189 int xfs_trans_read_buf_map(struct xfs_mount *mp,
190 struct xfs_trans *tp,
191 struct xfs_buftarg *target,
192 struct xfs_buf_map *map, int nmaps,
193 xfs_buf_flags_t flags,
194 struct xfs_buf **bpp,
195 const struct xfs_buf_ops *ops);
199 struct xfs_mount *mp,
200 struct xfs_trans *tp,
201 struct xfs_buftarg *target,
204 xfs_buf_flags_t flags,
205 struct xfs_buf **bpp,
206 const struct xfs_buf_ops *ops)
208 DEFINE_SINGLE_BUF_MAP(map, blkno, numblks);
209 return xfs_trans_read_buf_map(mp, tp, target, &map, 1,
213 struct xfs_buf *xfs_trans_getsb(xfs_trans_t *, struct xfs_mount *, int);
215 void xfs_trans_brelse(xfs_trans_t *, struct xfs_buf *);
216 void xfs_trans_bjoin(xfs_trans_t *, struct xfs_buf *);
217 void xfs_trans_bhold(xfs_trans_t *, struct xfs_buf *);
218 void xfs_trans_bhold_release(xfs_trans_t *, struct xfs_buf *);
219 void xfs_trans_binval(xfs_trans_t *, struct xfs_buf *);
220 void xfs_trans_inode_buf(xfs_trans_t *, struct xfs_buf *);
221 void xfs_trans_stale_inode_buf(xfs_trans_t *, struct xfs_buf *);
222 bool xfs_trans_ordered_buf(xfs_trans_t *, struct xfs_buf *);
223 void xfs_trans_dquot_buf(xfs_trans_t *, struct xfs_buf *, uint);
224 void xfs_trans_inode_alloc_buf(xfs_trans_t *, struct xfs_buf *);
225 void xfs_trans_ichgtime(struct xfs_trans *, struct xfs_inode *, int);
226 void xfs_trans_ijoin(struct xfs_trans *, struct xfs_inode *, uint);
227 void xfs_trans_log_buf(struct xfs_trans *, struct xfs_buf *, uint,
229 void xfs_trans_dirty_buf(struct xfs_trans *, struct xfs_buf *);
230 void xfs_trans_log_inode(xfs_trans_t *, struct xfs_inode *, uint);
232 void xfs_extent_free_init_defer_op(void);
233 struct xfs_efd_log_item *xfs_trans_get_efd(struct xfs_trans *,
234 struct xfs_efi_log_item *,
236 int xfs_trans_free_extent(struct xfs_trans *,
237 struct xfs_efd_log_item *, xfs_fsblock_t,
238 xfs_extlen_t, struct xfs_owner_info *,
240 int xfs_trans_commit(struct xfs_trans *);
241 int xfs_trans_roll(struct xfs_trans **);
242 int xfs_trans_roll_inode(struct xfs_trans **, struct xfs_inode *);
243 void xfs_trans_cancel(xfs_trans_t *);
244 int xfs_trans_ail_init(struct xfs_mount *);
245 void xfs_trans_ail_destroy(struct xfs_mount *);
247 void xfs_trans_buf_set_type(struct xfs_trans *, struct xfs_buf *,
249 void xfs_trans_buf_copy_type(struct xfs_buf *dst_bp,
250 struct xfs_buf *src_bp);
252 extern kmem_zone_t *xfs_trans_zone;
255 enum xfs_rmap_intent_type;
257 void xfs_rmap_update_init_defer_op(void);
258 struct xfs_rud_log_item *xfs_trans_get_rud(struct xfs_trans *tp,
259 struct xfs_rui_log_item *ruip);
260 int xfs_trans_log_finish_rmap_update(struct xfs_trans *tp,
261 struct xfs_rud_log_item *rudp, enum xfs_rmap_intent_type type,
262 uint64_t owner, int whichfork, xfs_fileoff_t startoff,
263 xfs_fsblock_t startblock, xfs_filblks_t blockcount,
264 xfs_exntst_t state, struct xfs_btree_cur **pcur);
266 /* refcount updates */
267 enum xfs_refcount_intent_type;
269 void xfs_refcount_update_init_defer_op(void);
270 struct xfs_cud_log_item *xfs_trans_get_cud(struct xfs_trans *tp,
271 struct xfs_cui_log_item *cuip);
272 int xfs_trans_log_finish_refcount_update(struct xfs_trans *tp,
273 struct xfs_cud_log_item *cudp, struct xfs_defer_ops *dfops,
274 enum xfs_refcount_intent_type type, xfs_fsblock_t startblock,
275 xfs_extlen_t blockcount, xfs_fsblock_t *new_fsb,
276 xfs_extlen_t *new_len, struct xfs_btree_cur **pcur);
278 /* mapping updates */
279 enum xfs_bmap_intent_type;
281 void xfs_bmap_update_init_defer_op(void);
282 struct xfs_bud_log_item *xfs_trans_get_bud(struct xfs_trans *tp,
283 struct xfs_bui_log_item *buip);
284 int xfs_trans_log_finish_bmap_update(struct xfs_trans *tp,
285 struct xfs_bud_log_item *rudp, struct xfs_defer_ops *dfops,
286 enum xfs_bmap_intent_type type, struct xfs_inode *ip,
287 int whichfork, xfs_fileoff_t startoff, xfs_fsblock_t startblock,
288 xfs_filblks_t *blockcount, xfs_exntst_t state);
290 #endif /* __XFS_TRANS_H__ */