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;
30 struct xfs_log_item_desc;
34 struct xfs_dquot_acct;
35 struct xfs_busy_extent;
37 typedef struct xfs_log_item {
38 struct list_head li_ail; /* AIL pointers */
39 xfs_lsn_t li_lsn; /* last on-disk lsn */
40 struct xfs_log_item_desc *li_desc; /* ptr to current desc*/
41 struct xfs_mount *li_mountp; /* ptr to fs mount */
42 struct xfs_ail *li_ailp; /* ptr to AIL */
43 uint li_type; /* item type */
44 uint li_flags; /* misc flags */
45 struct xfs_log_item *li_bio_list; /* buffer item list */
46 void (*li_cb)(struct xfs_buf *,
47 struct xfs_log_item *);
48 /* buffer item iodone */
50 const struct xfs_item_ops *li_ops; /* function list */
53 struct list_head li_cil; /* CIL pointers */
54 struct xfs_log_vec *li_lv; /* active log vector */
55 struct xfs_log_vec *li_lv_shadow; /* standby vector */
56 xfs_lsn_t li_seq; /* CIL commit seq */
59 #define XFS_LI_IN_AIL 0x1
60 #define XFS_LI_ABORTED 0x2
62 #define XFS_LI_FLAGS \
63 { XFS_LI_IN_AIL, "IN_AIL" }, \
64 { XFS_LI_ABORTED, "ABORTED" }
67 void (*iop_size)(xfs_log_item_t *, int *, int *);
68 void (*iop_format)(xfs_log_item_t *, struct xfs_log_vec *);
69 void (*iop_pin)(xfs_log_item_t *);
70 void (*iop_unpin)(xfs_log_item_t *, int remove);
71 uint (*iop_push)(struct xfs_log_item *, struct list_head *);
72 void (*iop_unlock)(xfs_log_item_t *);
73 xfs_lsn_t (*iop_committed)(xfs_log_item_t *, xfs_lsn_t);
74 void (*iop_committing)(xfs_log_item_t *, xfs_lsn_t);
77 void xfs_log_item_init(struct xfs_mount *mp, struct xfs_log_item *item,
78 int type, const struct xfs_item_ops *ops);
81 * Return values for the iop_push() routines.
83 #define XFS_ITEM_SUCCESS 0
84 #define XFS_ITEM_PINNED 1
85 #define XFS_ITEM_LOCKED 2
86 #define XFS_ITEM_FLUSHING 3
90 * This is the structure maintained for every active transaction.
92 typedef struct xfs_trans {
93 unsigned int t_magic; /* magic number */
94 unsigned int t_log_res; /* amt of log space resvd */
95 unsigned int t_log_count; /* count for perm log res */
96 unsigned int t_blk_res; /* # of blocks resvd */
97 unsigned int t_blk_res_used; /* # of resvd blocks used */
98 unsigned int t_rtx_res; /* # of rt extents resvd */
99 unsigned int t_rtx_res_used; /* # of resvd rt extents used */
100 struct xlog_ticket *t_ticket; /* log mgr ticket */
101 xfs_lsn_t t_lsn; /* log seq num of start of
103 xfs_lsn_t t_commit_lsn; /* log seq num of end of
105 struct xfs_mount *t_mountp; /* ptr to fs mount struct */
106 struct xfs_dquot_acct *t_dqinfo; /* acctg info for dquots */
107 unsigned int t_flags; /* misc flags */
108 int64_t t_icount_delta; /* superblock icount change */
109 int64_t t_ifree_delta; /* superblock ifree change */
110 int64_t t_fdblocks_delta; /* superblock fdblocks chg */
111 int64_t t_res_fdblocks_delta; /* on-disk only chg */
112 int64_t t_frextents_delta;/* superblock freextents chg*/
113 int64_t t_res_frextents_delta; /* on-disk only chg */
114 #if defined(DEBUG) || defined(XFS_WARN)
115 int64_t t_ag_freeblks_delta; /* debugging counter */
116 int64_t t_ag_flist_delta; /* debugging counter */
117 int64_t t_ag_btree_delta; /* debugging counter */
119 int64_t t_dblocks_delta;/* superblock dblocks change */
120 int64_t t_agcount_delta;/* superblock agcount change */
121 int64_t t_imaxpct_delta;/* superblock imaxpct change */
122 int64_t t_rextsize_delta;/* superblock rextsize chg */
123 int64_t t_rbmblocks_delta;/* superblock rbmblocks chg */
124 int64_t t_rblocks_delta;/* superblock rblocks change */
125 int64_t t_rextents_delta;/* superblocks rextents chg */
126 int64_t t_rextslog_delta;/* superblocks rextslog chg */
127 struct list_head t_items; /* log item descriptors */
128 struct list_head t_busy; /* list of busy extents */
129 unsigned long t_pflags; /* saved process flags state */
133 * XFS transaction mechanism exported interfaces that are
136 #define xfs_trans_set_sync(tp) ((tp)->t_flags |= XFS_TRANS_SYNC)
138 #if defined(DEBUG) || defined(XFS_WARN)
139 #define xfs_trans_agblocks_delta(tp, d) ((tp)->t_ag_freeblks_delta += (int64_t)d)
140 #define xfs_trans_agflist_delta(tp, d) ((tp)->t_ag_flist_delta += (int64_t)d)
141 #define xfs_trans_agbtree_delta(tp, d) ((tp)->t_ag_btree_delta += (int64_t)d)
143 #define xfs_trans_agblocks_delta(tp, d)
144 #define xfs_trans_agflist_delta(tp, d)
145 #define xfs_trans_agbtree_delta(tp, d)
149 * XFS transaction mechanism exported interfaces.
151 int xfs_trans_alloc(struct xfs_mount *mp, struct xfs_trans_res *resp,
152 uint blocks, uint rtextents, uint flags,
153 struct xfs_trans **tpp);
154 void xfs_trans_mod_sb(xfs_trans_t *, uint, int64_t);
156 struct xfs_buf *xfs_trans_get_buf_map(struct xfs_trans *tp,
157 struct xfs_buftarg *target,
158 struct xfs_buf_map *map, int nmaps,
161 static inline struct xfs_buf *
163 struct xfs_trans *tp,
164 struct xfs_buftarg *target,
169 DEFINE_SINGLE_BUF_MAP(map, blkno, numblks);
170 return xfs_trans_get_buf_map(tp, target, &map, 1, flags);
173 int xfs_trans_read_buf_map(struct xfs_mount *mp,
174 struct xfs_trans *tp,
175 struct xfs_buftarg *target,
176 struct xfs_buf_map *map, int nmaps,
177 xfs_buf_flags_t flags,
178 struct xfs_buf **bpp,
179 const struct xfs_buf_ops *ops);
183 struct xfs_mount *mp,
184 struct xfs_trans *tp,
185 struct xfs_buftarg *target,
188 xfs_buf_flags_t flags,
189 struct xfs_buf **bpp,
190 const struct xfs_buf_ops *ops)
192 DEFINE_SINGLE_BUF_MAP(map, blkno, numblks);
193 return xfs_trans_read_buf_map(mp, tp, target, &map, 1,
197 struct xfs_buf *xfs_trans_getsb(xfs_trans_t *, struct xfs_mount *, int);
199 void xfs_trans_brelse(xfs_trans_t *, struct xfs_buf *);
200 void xfs_trans_bjoin(xfs_trans_t *, struct xfs_buf *);
201 void xfs_trans_bhold(xfs_trans_t *, struct xfs_buf *);
202 void xfs_trans_bhold_release(xfs_trans_t *, struct xfs_buf *);
203 void xfs_trans_binval(xfs_trans_t *, struct xfs_buf *);
204 void xfs_trans_inode_buf(xfs_trans_t *, struct xfs_buf *);
205 void xfs_trans_stale_inode_buf(xfs_trans_t *, struct xfs_buf *);
206 void xfs_trans_ordered_buf(xfs_trans_t *, struct xfs_buf *);
207 void xfs_trans_dquot_buf(xfs_trans_t *, struct xfs_buf *, uint);
208 void xfs_trans_inode_alloc_buf(xfs_trans_t *, struct xfs_buf *);
209 void xfs_trans_ichgtime(struct xfs_trans *, struct xfs_inode *, int);
210 void xfs_trans_ijoin(struct xfs_trans *, struct xfs_inode *, uint);
211 void xfs_trans_log_buf(xfs_trans_t *, struct xfs_buf *, uint, uint);
212 void xfs_trans_log_inode(xfs_trans_t *, struct xfs_inode *, uint);
213 struct xfs_efi_log_item *xfs_trans_get_efi(struct xfs_trans *, uint);
214 void xfs_trans_log_efi_extent(struct xfs_trans *,
215 struct xfs_efi_log_item *,
218 struct xfs_efd_log_item *xfs_trans_get_efd(struct xfs_trans *,
219 struct xfs_efi_log_item *,
221 int xfs_trans_free_extent(struct xfs_trans *,
222 struct xfs_efd_log_item *, xfs_fsblock_t,
224 int xfs_trans_commit(struct xfs_trans *);
225 int __xfs_trans_roll(struct xfs_trans **, struct xfs_inode *, int *);
226 int xfs_trans_roll(struct xfs_trans **, struct xfs_inode *);
227 void xfs_trans_cancel(xfs_trans_t *);
228 int xfs_trans_ail_init(struct xfs_mount *);
229 void xfs_trans_ail_destroy(struct xfs_mount *);
231 void xfs_trans_buf_set_type(struct xfs_trans *, struct xfs_buf *,
233 void xfs_trans_buf_copy_type(struct xfs_buf *dst_bp,
234 struct xfs_buf *src_bp);
236 extern kmem_zone_t *xfs_trans_zone;
237 extern kmem_zone_t *xfs_log_item_desc_zone;
239 #endif /* __XFS_TRANS_H__ */