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__
23 #include "xfs_trans_resv.h"
25 /* kernel only transaction subsystem defines */
29 struct xfs_efd_log_item;
30 struct xfs_efi_log_item;
34 struct xfs_log_item_desc;
38 struct xfs_dquot_acct;
39 struct xfs_busy_extent;
41 typedef struct xfs_log_item {
42 struct list_head li_ail; /* AIL pointers */
43 xfs_lsn_t li_lsn; /* last on-disk lsn */
44 struct xfs_log_item_desc *li_desc; /* ptr to current desc*/
45 struct xfs_mount *li_mountp; /* ptr to fs mount */
46 struct xfs_ail *li_ailp; /* ptr to AIL */
47 uint li_type; /* item type */
48 uint li_flags; /* misc flags */
49 struct xfs_log_item *li_bio_list; /* buffer item list */
50 void (*li_cb)(struct xfs_buf *,
51 struct xfs_log_item *);
52 /* buffer item iodone */
54 const struct xfs_item_ops *li_ops; /* function list */
57 struct list_head li_cil; /* CIL pointers */
58 struct xfs_log_vec *li_lv; /* active log vector */
59 xfs_lsn_t li_seq; /* CIL commit seq */
62 #define XFS_LI_IN_AIL 0x1
63 #define XFS_LI_ABORTED 0x2
65 #define XFS_LI_FLAGS \
66 { XFS_LI_IN_AIL, "IN_AIL" }, \
67 { XFS_LI_ABORTED, "ABORTED" }
70 void (*iop_size)(xfs_log_item_t *, int *, int *);
71 void (*iop_format)(xfs_log_item_t *, struct xfs_log_iovec *);
72 void (*iop_pin)(xfs_log_item_t *);
73 void (*iop_unpin)(xfs_log_item_t *, int remove);
74 uint (*iop_push)(struct xfs_log_item *, struct list_head *);
75 void (*iop_unlock)(xfs_log_item_t *);
76 xfs_lsn_t (*iop_committed)(xfs_log_item_t *, xfs_lsn_t);
77 void (*iop_committing)(xfs_log_item_t *, xfs_lsn_t);
80 #define IOP_PIN(ip) (*(ip)->li_ops->iop_pin)(ip)
81 #define IOP_UNPIN(ip, remove) (*(ip)->li_ops->iop_unpin)(ip, remove)
82 #define IOP_PUSH(ip, list) (*(ip)->li_ops->iop_push)(ip, list)
83 #define IOP_UNLOCK(ip) (*(ip)->li_ops->iop_unlock)(ip)
84 #define IOP_COMMITTED(ip, lsn) (*(ip)->li_ops->iop_committed)(ip, lsn)
85 #define IOP_COMMITTING(ip, lsn) (*(ip)->li_ops->iop_committing)(ip, lsn)
88 * Return values for the IOP_PUSH() routines.
90 #define XFS_ITEM_SUCCESS 0
91 #define XFS_ITEM_PINNED 1
92 #define XFS_ITEM_LOCKED 2
93 #define XFS_ITEM_FLUSHING 3
96 * This is the type of function which can be given to xfs_trans_callback()
97 * to be called upon the transaction's commit to disk.
99 typedef void (*xfs_trans_callback_t)(struct xfs_trans *, void *);
102 * This is the structure maintained for every active transaction.
104 typedef struct xfs_trans {
105 unsigned int t_magic; /* magic number */
106 xfs_log_callback_t t_logcb; /* log callback struct */
107 unsigned int t_type; /* transaction type */
108 unsigned int t_log_res; /* amt of log space resvd */
109 unsigned int t_log_count; /* count for perm log res */
110 unsigned int t_blk_res; /* # of blocks resvd */
111 unsigned int t_blk_res_used; /* # of resvd blocks used */
112 unsigned int t_rtx_res; /* # of rt extents resvd */
113 unsigned int t_rtx_res_used; /* # of resvd rt extents used */
114 struct xlog_ticket *t_ticket; /* log mgr ticket */
115 xfs_lsn_t t_lsn; /* log seq num of start of
117 xfs_lsn_t t_commit_lsn; /* log seq num of end of
119 struct xfs_mount *t_mountp; /* ptr to fs mount struct */
120 struct xfs_dquot_acct *t_dqinfo; /* acctg info for dquots */
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 xfs_trans_header_t t_header; /* header for in-log trans */
143 struct list_head t_busy; /* list of busy extents */
144 unsigned long t_pflags; /* saved process flags state */
148 * XFS transaction mechanism exported interfaces that are
151 #define xfs_trans_get_log_res(tp) ((tp)->t_log_res)
152 #define xfs_trans_get_log_count(tp) ((tp)->t_log_count)
153 #define xfs_trans_get_block_res(tp) ((tp)->t_blk_res)
154 #define xfs_trans_set_sync(tp) ((tp)->t_flags |= XFS_TRANS_SYNC)
156 #if defined(DEBUG) || defined(XFS_WARN)
157 #define xfs_trans_agblocks_delta(tp, d) ((tp)->t_ag_freeblks_delta += (int64_t)d)
158 #define xfs_trans_agflist_delta(tp, d) ((tp)->t_ag_flist_delta += (int64_t)d)
159 #define xfs_trans_agbtree_delta(tp, d) ((tp)->t_ag_btree_delta += (int64_t)d)
161 #define xfs_trans_agblocks_delta(tp, d)
162 #define xfs_trans_agflist_delta(tp, d)
163 #define xfs_trans_agbtree_delta(tp, d)
167 * XFS transaction mechanism exported interfaces.
169 xfs_trans_t *xfs_trans_alloc(struct xfs_mount *, uint);
170 xfs_trans_t *_xfs_trans_alloc(struct xfs_mount *, uint, xfs_km_flags_t);
171 xfs_trans_t *xfs_trans_dup(xfs_trans_t *);
172 int xfs_trans_reserve(struct xfs_trans *, struct xfs_trans_res *,
174 void xfs_trans_mod_sb(xfs_trans_t *, uint, int64_t);
176 struct xfs_buf *xfs_trans_get_buf_map(struct xfs_trans *tp,
177 struct xfs_buftarg *target,
178 struct xfs_buf_map *map, int nmaps,
181 static inline struct xfs_buf *
183 struct xfs_trans *tp,
184 struct xfs_buftarg *target,
189 DEFINE_SINGLE_BUF_MAP(map, blkno, numblks);
190 return xfs_trans_get_buf_map(tp, target, &map, 1, flags);
193 int xfs_trans_read_buf_map(struct xfs_mount *mp,
194 struct xfs_trans *tp,
195 struct xfs_buftarg *target,
196 struct xfs_buf_map *map, int nmaps,
197 xfs_buf_flags_t flags,
198 struct xfs_buf **bpp,
199 const struct xfs_buf_ops *ops);
203 struct xfs_mount *mp,
204 struct xfs_trans *tp,
205 struct xfs_buftarg *target,
208 xfs_buf_flags_t flags,
209 struct xfs_buf **bpp,
210 const struct xfs_buf_ops *ops)
212 DEFINE_SINGLE_BUF_MAP(map, blkno, numblks);
213 return xfs_trans_read_buf_map(mp, tp, target, &map, 1,
217 struct xfs_buf *xfs_trans_getsb(xfs_trans_t *, struct xfs_mount *, int);
219 void xfs_trans_brelse(xfs_trans_t *, struct xfs_buf *);
220 void xfs_trans_bjoin(xfs_trans_t *, struct xfs_buf *);
221 void xfs_trans_bhold(xfs_trans_t *, struct xfs_buf *);
222 void xfs_trans_bhold_release(xfs_trans_t *, struct xfs_buf *);
223 void xfs_trans_binval(xfs_trans_t *, struct xfs_buf *);
224 void xfs_trans_inode_buf(xfs_trans_t *, struct xfs_buf *);
225 void xfs_trans_stale_inode_buf(xfs_trans_t *, struct xfs_buf *);
226 void xfs_trans_ordered_buf(xfs_trans_t *, struct xfs_buf *);
227 void xfs_trans_dquot_buf(xfs_trans_t *, struct xfs_buf *, uint);
228 void xfs_trans_inode_alloc_buf(xfs_trans_t *, struct xfs_buf *);
229 void xfs_trans_ichgtime(struct xfs_trans *, struct xfs_inode *, int);
230 void xfs_trans_ijoin(struct xfs_trans *, struct xfs_inode *, uint);
231 void xfs_trans_log_buf(xfs_trans_t *, struct xfs_buf *, uint, uint);
232 void xfs_trans_log_inode(xfs_trans_t *, struct xfs_inode *, uint);
233 struct xfs_efi_log_item *xfs_trans_get_efi(xfs_trans_t *, uint);
234 void xfs_efi_release(struct xfs_efi_log_item *, uint);
235 void xfs_trans_log_efi_extent(xfs_trans_t *,
236 struct xfs_efi_log_item *,
239 struct xfs_efd_log_item *xfs_trans_get_efd(xfs_trans_t *,
240 struct xfs_efi_log_item *,
242 void xfs_trans_log_efd_extent(xfs_trans_t *,
243 struct xfs_efd_log_item *,
246 int xfs_trans_commit(xfs_trans_t *, uint flags);
247 void xfs_trans_cancel(xfs_trans_t *, int);
248 int xfs_trans_ail_init(struct xfs_mount *);
249 void xfs_trans_ail_destroy(struct xfs_mount *);
251 extern kmem_zone_t *xfs_trans_zone;
252 extern kmem_zone_t *xfs_log_item_desc_zone;
254 #endif /* __XFS_TRANS_H__ */