Merge tag 'configfs-for-4.7' of git://git.infradead.org/users/hch/configfs
[linux-2.6-block.git] / fs / xfs / xfs_trans.h
CommitLineData
1da177e4 1/*
7b718769
NS
2 * Copyright (c) 2000-2002,2005 Silicon Graphics, Inc.
3 * All Rights Reserved.
1da177e4 4 *
7b718769
NS
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
1da177e4
LT
7 * published by the Free Software Foundation.
8 *
7b718769
NS
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.
1da177e4 13 *
7b718769
NS
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
1da177e4
LT
17 */
18#ifndef __XFS_TRANS_H__
19#define __XFS_TRANS_H__
20
7fd36c44 21/* kernel only transaction subsystem defines */
847fff5c
BN
22
23struct xfs_buf;
24struct xfs_buftarg;
25struct xfs_efd_log_item;
26struct xfs_efi_log_item;
27struct xfs_inode;
28struct xfs_item_ops;
29struct xfs_log_iovec;
30struct xfs_log_item_desc;
31struct xfs_mount;
32struct xfs_trans;
3d3c8b52 33struct xfs_trans_res;
847fff5c 34struct xfs_dquot_acct;
ed3b4d6c 35struct xfs_busy_extent;
847fff5c
BN
36
37typedef 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 */
fc1829f3 42 struct xfs_ail *li_ailp; /* ptr to AIL */
847fff5c
BN
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 */
49 /* callback func */
272e42b2 50 const struct xfs_item_ops *li_ops; /* function list */
71e330b5
DC
51
52 /* delayed logging */
53 struct list_head li_cil; /* CIL pointers */
54 struct xfs_log_vec *li_lv; /* active log vector */
ccf7c23f 55 xfs_lsn_t li_seq; /* CIL commit seq */
847fff5c
BN
56} xfs_log_item_t;
57
58#define XFS_LI_IN_AIL 0x1
59#define XFS_LI_ABORTED 0x2
60
0b1b213f
CH
61#define XFS_LI_FLAGS \
62 { XFS_LI_IN_AIL, "IN_AIL" }, \
63 { XFS_LI_ABORTED, "ABORTED" }
64
272e42b2 65struct xfs_item_ops {
166d1368 66 void (*iop_size)(xfs_log_item_t *, int *, int *);
bde7cff6 67 void (*iop_format)(xfs_log_item_t *, struct xfs_log_vec *);
847fff5c 68 void (*iop_pin)(xfs_log_item_t *);
9412e318 69 void (*iop_unpin)(xfs_log_item_t *, int remove);
43ff2122 70 uint (*iop_push)(struct xfs_log_item *, struct list_head *);
847fff5c
BN
71 void (*iop_unlock)(xfs_log_item_t *);
72 xfs_lsn_t (*iop_committed)(xfs_log_item_t *, xfs_lsn_t);
847fff5c 73 void (*iop_committing)(xfs_log_item_t *, xfs_lsn_t);
272e42b2 74};
847fff5c 75
239880ef
DC
76void xfs_log_item_init(struct xfs_mount *mp, struct xfs_log_item *item,
77 int type, const struct xfs_item_ops *ops);
78
847fff5c 79/*
904c17e6 80 * Return values for the iop_push() routines.
847fff5c 81 */
43ff2122
CH
82#define XFS_ITEM_SUCCESS 0
83#define XFS_ITEM_PINNED 1
84#define XFS_ITEM_LOCKED 2
85#define XFS_ITEM_FLUSHING 3
847fff5c 86
239880ef 87
847fff5c
BN
88/*
89 * This is the structure maintained for every active transaction.
90 */
91typedef struct xfs_trans {
92 unsigned int t_magic; /* magic number */
847fff5c
BN
93 unsigned int t_log_res; /* amt of log space resvd */
94 unsigned int t_log_count; /* count for perm log res */
95 unsigned int t_blk_res; /* # of blocks resvd */
96 unsigned int t_blk_res_used; /* # of resvd blocks used */
97 unsigned int t_rtx_res; /* # of rt extents resvd */
98 unsigned int t_rtx_res_used; /* # of resvd rt extents used */
35a8a72f 99 struct xlog_ticket *t_ticket; /* log mgr ticket */
847fff5c
BN
100 xfs_lsn_t t_lsn; /* log seq num of start of
101 * transaction. */
102 xfs_lsn_t t_commit_lsn; /* log seq num of end of
103 * transaction. */
104 struct xfs_mount *t_mountp; /* ptr to fs mount struct */
105 struct xfs_dquot_acct *t_dqinfo; /* acctg info for dquots */
847fff5c
BN
106 unsigned int t_flags; /* misc flags */
107 int64_t t_icount_delta; /* superblock icount change */
108 int64_t t_ifree_delta; /* superblock ifree change */
109 int64_t t_fdblocks_delta; /* superblock fdblocks chg */
110 int64_t t_res_fdblocks_delta; /* on-disk only chg */
111 int64_t t_frextents_delta;/* superblock freextents chg*/
112 int64_t t_res_frextents_delta; /* on-disk only chg */
742ae1e3 113#if defined(DEBUG) || defined(XFS_WARN)
847fff5c
BN
114 int64_t t_ag_freeblks_delta; /* debugging counter */
115 int64_t t_ag_flist_delta; /* debugging counter */
116 int64_t t_ag_btree_delta; /* debugging counter */
117#endif
118 int64_t t_dblocks_delta;/* superblock dblocks change */
119 int64_t t_agcount_delta;/* superblock agcount change */
120 int64_t t_imaxpct_delta;/* superblock imaxpct change */
121 int64_t t_rextsize_delta;/* superblock rextsize chg */
122 int64_t t_rbmblocks_delta;/* superblock rbmblocks chg */
123 int64_t t_rblocks_delta;/* superblock rblocks change */
124 int64_t t_rextents_delta;/* superblocks rextents chg */
125 int64_t t_rextslog_delta;/* superblocks rextslog chg */
e98c414f 126 struct list_head t_items; /* log item descriptors */
ed3b4d6c 127 struct list_head t_busy; /* list of busy extents */
847fff5c
BN
128 unsigned long t_pflags; /* saved process flags state */
129} xfs_trans_t;
130
1da177e4
LT
131/*
132 * XFS transaction mechanism exported interfaces that are
133 * actually macros.
134 */
1da177e4
LT
135#define xfs_trans_set_sync(tp) ((tp)->t_flags |= XFS_TRANS_SYNC)
136
742ae1e3 137#if defined(DEBUG) || defined(XFS_WARN)
20f4ebf2
DC
138#define xfs_trans_agblocks_delta(tp, d) ((tp)->t_ag_freeblks_delta += (int64_t)d)
139#define xfs_trans_agflist_delta(tp, d) ((tp)->t_ag_flist_delta += (int64_t)d)
140#define xfs_trans_agbtree_delta(tp, d) ((tp)->t_ag_btree_delta += (int64_t)d)
1da177e4
LT
141#else
142#define xfs_trans_agblocks_delta(tp, d)
143#define xfs_trans_agflist_delta(tp, d)
144#define xfs_trans_agbtree_delta(tp, d)
145#endif
146
147/*
148 * XFS transaction mechanism exported interfaces.
149 */
253f4911
CH
150int xfs_trans_alloc(struct xfs_mount *mp, struct xfs_trans_res *resp,
151 uint blocks, uint rtextents, uint flags,
152 struct xfs_trans **tpp);
20f4ebf2 153void xfs_trans_mod_sb(xfs_trans_t *, uint, int64_t);
de2a4f59
DC
154
155struct xfs_buf *xfs_trans_get_buf_map(struct xfs_trans *tp,
156 struct xfs_buftarg *target,
157 struct xfs_buf_map *map, int nmaps,
158 uint flags);
159
160static inline struct xfs_buf *
161xfs_trans_get_buf(
162 struct xfs_trans *tp,
163 struct xfs_buftarg *target,
164 xfs_daddr_t blkno,
165 int numblks,
166 uint flags)
167{
c3f8fc73 168 DEFINE_SINGLE_BUF_MAP(map, blkno, numblks);
de2a4f59
DC
169 return xfs_trans_get_buf_map(tp, target, &map, 1, flags);
170}
171
172int xfs_trans_read_buf_map(struct xfs_mount *mp,
173 struct xfs_trans *tp,
174 struct xfs_buftarg *target,
175 struct xfs_buf_map *map, int nmaps,
176 xfs_buf_flags_t flags,
c3f8fc73 177 struct xfs_buf **bpp,
1813dd64 178 const struct xfs_buf_ops *ops);
de2a4f59
DC
179
180static inline int
181xfs_trans_read_buf(
182 struct xfs_mount *mp,
183 struct xfs_trans *tp,
184 struct xfs_buftarg *target,
185 xfs_daddr_t blkno,
186 int numblks,
187 xfs_buf_flags_t flags,
c3f8fc73 188 struct xfs_buf **bpp,
1813dd64 189 const struct xfs_buf_ops *ops)
de2a4f59 190{
c3f8fc73
DC
191 DEFINE_SINGLE_BUF_MAP(map, blkno, numblks);
192 return xfs_trans_read_buf_map(mp, tp, target, &map, 1,
1813dd64 193 flags, bpp, ops);
de2a4f59
DC
194}
195
1da177e4
LT
196struct xfs_buf *xfs_trans_getsb(xfs_trans_t *, struct xfs_mount *, int);
197
198void xfs_trans_brelse(xfs_trans_t *, struct xfs_buf *);
199void xfs_trans_bjoin(xfs_trans_t *, struct xfs_buf *);
200void xfs_trans_bhold(xfs_trans_t *, struct xfs_buf *);
efa092f3 201void xfs_trans_bhold_release(xfs_trans_t *, struct xfs_buf *);
1da177e4
LT
202void xfs_trans_binval(xfs_trans_t *, struct xfs_buf *);
203void xfs_trans_inode_buf(xfs_trans_t *, struct xfs_buf *);
1da177e4 204void xfs_trans_stale_inode_buf(xfs_trans_t *, struct xfs_buf *);
5f6bed76 205void xfs_trans_ordered_buf(xfs_trans_t *, struct xfs_buf *);
1da177e4
LT
206void xfs_trans_dquot_buf(xfs_trans_t *, struct xfs_buf *, uint);
207void xfs_trans_inode_alloc_buf(xfs_trans_t *, struct xfs_buf *);
dcd79a14 208void xfs_trans_ichgtime(struct xfs_trans *, struct xfs_inode *, int);
ddc3415a 209void xfs_trans_ijoin(struct xfs_trans *, struct xfs_inode *, uint);
1da177e4
LT
210void xfs_trans_log_buf(xfs_trans_t *, struct xfs_buf *, uint, uint);
211void xfs_trans_log_inode(xfs_trans_t *, struct xfs_inode *, uint);
212struct xfs_efi_log_item *xfs_trans_get_efi(xfs_trans_t *, uint);
1da177e4
LT
213void xfs_trans_log_efi_extent(xfs_trans_t *,
214 struct xfs_efi_log_item *,
215 xfs_fsblock_t,
216 xfs_extlen_t);
217struct xfs_efd_log_item *xfs_trans_get_efd(xfs_trans_t *,
218 struct xfs_efi_log_item *,
219 uint);
6bc43af3
BF
220int xfs_trans_free_extent(struct xfs_trans *,
221 struct xfs_efd_log_item *, xfs_fsblock_t,
222 xfs_extlen_t);
70393313 223int xfs_trans_commit(struct xfs_trans *);
d43ac29b 224int __xfs_trans_roll(struct xfs_trans **, struct xfs_inode *, int *);
239880ef 225int xfs_trans_roll(struct xfs_trans **, struct xfs_inode *);
4906e215 226void xfs_trans_cancel(xfs_trans_t *);
249a8c11
DC
227int xfs_trans_ail_init(struct xfs_mount *);
228void xfs_trans_ail_destroy(struct xfs_mount *);
1da177e4 229
a4fbe6ab
DC
230void xfs_trans_buf_set_type(struct xfs_trans *, struct xfs_buf *,
231 enum xfs_blft);
232void xfs_trans_buf_copy_type(struct xfs_buf *dst_bp,
233 struct xfs_buf *src_bp);
234
a8272ce0 235extern kmem_zone_t *xfs_trans_zone;
e98c414f 236extern kmem_zone_t *xfs_log_item_desc_zone;
a8272ce0 237
1da177e4 238#endif /* __XFS_TRANS_H__ */