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[linux.git] / fs / xfs / xfs_trans.h
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0b61f8a4 1// SPDX-License-Identifier: GPL-2.0
1da177e4 2/*
7b718769
NS
3 * Copyright (c) 2000-2002,2005 Silicon Graphics, Inc.
4 * All Rights Reserved.
1da177e4
LT
5 */
6#ifndef __XFS_TRANS_H__
7#define __XFS_TRANS_H__
8
7fd36c44 9/* kernel only transaction subsystem defines */
847fff5c
BN
10
11struct xfs_buf;
12struct xfs_buftarg;
13struct xfs_efd_log_item;
14struct xfs_efi_log_item;
15struct xfs_inode;
16struct xfs_item_ops;
17struct xfs_log_iovec;
847fff5c
BN
18struct xfs_mount;
19struct xfs_trans;
3d3c8b52 20struct xfs_trans_res;
847fff5c 21struct xfs_dquot_acct;
f8dbebef
DW
22struct xfs_rud_log_item;
23struct xfs_rui_log_item;
9c194644 24struct xfs_btree_cur;
f997ee21 25struct xfs_cui_log_item;
33ba6129 26struct xfs_cud_log_item;
77d61fe4 27struct xfs_bui_log_item;
9f3afb57 28struct xfs_bud_log_item;
847fff5c 29
efe2330f 30struct xfs_log_item {
847fff5c 31 struct list_head li_ail; /* AIL pointers */
e6631f85 32 struct list_head li_trans; /* transaction list */
847fff5c 33 xfs_lsn_t li_lsn; /* last on-disk lsn */
847fff5c 34 struct xfs_mount *li_mountp; /* ptr to fs mount */
fc1829f3 35 struct xfs_ail *li_ailp; /* ptr to AIL */
847fff5c 36 uint li_type; /* item type */
22525c17 37 unsigned long li_flags; /* misc flags */
d3a304b6 38 struct xfs_buf *li_buf; /* real buffer pointer */
643c8c05 39 struct list_head li_bio_list; /* buffer item list */
272e42b2 40 const struct xfs_item_ops *li_ops; /* function list */
71e330b5
DC
41
42 /* delayed logging */
43 struct list_head li_cil; /* CIL pointers */
44 struct xfs_log_vec *li_lv; /* active log vector */
b1c5ebb2 45 struct xfs_log_vec *li_lv_shadow; /* standby vector */
ccf7c23f 46 xfs_lsn_t li_seq; /* CIL commit seq */
efe2330f 47};
847fff5c 48
22525c17
DC
49/*
50 * li_flags use the (set/test/clear)_bit atomic interfaces because updates can
51 * race with each other and we don't want to have to use the AIL lock to
52 * serialise all updates.
53 */
54#define XFS_LI_IN_AIL 0
55#define XFS_LI_ABORTED 1
56#define XFS_LI_FAILED 2
e6631f85 57#define XFS_LI_DIRTY 3 /* log item dirty in transaction */
847fff5c 58
0b1b213f 59#define XFS_LI_FLAGS \
22525c17
DC
60 { (1 << XFS_LI_IN_AIL), "IN_AIL" }, \
61 { (1 << XFS_LI_ABORTED), "ABORTED" }, \
e6631f85 62 { (1 << XFS_LI_FAILED), "FAILED" }, \
901219bb 63 { (1 << XFS_LI_DIRTY), "DIRTY" }
0b1b213f 64
272e42b2 65struct xfs_item_ops {
9ce632a2 66 unsigned flags;
efe2330f
CH
67 void (*iop_size)(struct xfs_log_item *, int *, int *);
68 void (*iop_format)(struct xfs_log_item *, struct xfs_log_vec *);
69 void (*iop_pin)(struct xfs_log_item *);
70 void (*iop_unpin)(struct xfs_log_item *, int remove);
43ff2122 71 uint (*iop_push)(struct xfs_log_item *, struct list_head *);
ddf92053
CH
72 void (*iop_committing)(struct xfs_log_item *, xfs_lsn_t commit_lsn);
73 void (*iop_release)(struct xfs_log_item *);
efe2330f 74 xfs_lsn_t (*iop_committed)(struct xfs_log_item *, xfs_lsn_t);
e6fff81e
DW
75 int (*iop_recover)(struct xfs_log_item *lip,
76 struct list_head *capture_list);
154c733a 77 bool (*iop_match)(struct xfs_log_item *item, uint64_t id);
4e919af7
DW
78 struct xfs_log_item *(*iop_relog)(struct xfs_log_item *intent,
79 struct xfs_trans *tp);
272e42b2 80};
847fff5c 81
d6b8fc6c
KX
82/* Is this log item a deferred action intent? */
83static inline bool
84xlog_item_is_intent(struct xfs_log_item *lip)
85{
86 return lip->li_ops->iop_recover != NULL &&
87 lip->li_ops->iop_match != NULL;
88}
89
90/* Is this a log intent-done item? */
91static inline bool
92xlog_item_is_intent_done(struct xfs_log_item *lip)
93{
94 return lip->li_ops->iop_unpin == NULL &&
95 lip->li_ops->iop_push == NULL;
96}
97
9ce632a2
CH
98/*
99 * Release the log item as soon as committed. This is for items just logging
100 * intents that never need to be written back in place.
101 */
102#define XFS_ITEM_RELEASE_WHEN_COMMITTED (1 << 0)
103
239880ef
DC
104void xfs_log_item_init(struct xfs_mount *mp, struct xfs_log_item *item,
105 int type, const struct xfs_item_ops *ops);
106
847fff5c 107/*
904c17e6 108 * Return values for the iop_push() routines.
847fff5c 109 */
43ff2122
CH
110#define XFS_ITEM_SUCCESS 0
111#define XFS_ITEM_PINNED 1
112#define XFS_ITEM_LOCKED 2
113#define XFS_ITEM_FLUSHING 3
847fff5c 114
e021a2e5 115/*
9d9e6233 116 * Deferred operation item relogging limits.
e021a2e5
BF
117 */
118#define XFS_DEFER_OPS_NR_INODES 2 /* join up to two inodes */
119#define XFS_DEFER_OPS_NR_BUFS 2 /* join up to two buffers */
239880ef 120
847fff5c
BN
121/*
122 * This is the structure maintained for every active transaction.
123 */
124typedef struct xfs_trans {
125 unsigned int t_magic; /* magic number */
847fff5c
BN
126 unsigned int t_log_res; /* amt of log space resvd */
127 unsigned int t_log_count; /* count for perm log res */
128 unsigned int t_blk_res; /* # of blocks resvd */
129 unsigned int t_blk_res_used; /* # of resvd blocks used */
130 unsigned int t_rtx_res; /* # of rt extents resvd */
131 unsigned int t_rtx_res_used; /* # of resvd rt extents used */
44fd2946 132 unsigned int t_flags; /* misc flags */
bba59c5e 133 xfs_fsblock_t t_firstblock; /* first block allocated */
35a8a72f 134 struct xlog_ticket *t_ticket; /* log mgr ticket */
847fff5c
BN
135 struct xfs_mount *t_mountp; /* ptr to fs mount struct */
136 struct xfs_dquot_acct *t_dqinfo; /* acctg info for dquots */
847fff5c
BN
137 int64_t t_icount_delta; /* superblock icount change */
138 int64_t t_ifree_delta; /* superblock ifree change */
139 int64_t t_fdblocks_delta; /* superblock fdblocks chg */
140 int64_t t_res_fdblocks_delta; /* on-disk only chg */
141 int64_t t_frextents_delta;/* superblock freextents chg*/
142 int64_t t_res_frextents_delta; /* on-disk only chg */
742ae1e3 143#if defined(DEBUG) || defined(XFS_WARN)
847fff5c
BN
144 int64_t t_ag_freeblks_delta; /* debugging counter */
145 int64_t t_ag_flist_delta; /* debugging counter */
146 int64_t t_ag_btree_delta; /* debugging counter */
147#endif
148 int64_t t_dblocks_delta;/* superblock dblocks change */
149 int64_t t_agcount_delta;/* superblock agcount change */
150 int64_t t_imaxpct_delta;/* superblock imaxpct change */
151 int64_t t_rextsize_delta;/* superblock rextsize chg */
152 int64_t t_rbmblocks_delta;/* superblock rbmblocks chg */
153 int64_t t_rblocks_delta;/* superblock rblocks change */
154 int64_t t_rextents_delta;/* superblocks rextents chg */
155 int64_t t_rextslog_delta;/* superblocks rextslog chg */
e98c414f 156 struct list_head t_items; /* log item descriptors */
ed3b4d6c 157 struct list_head t_busy; /* list of busy extents */
9d9e6233 158 struct list_head t_dfops; /* deferred operations */
847fff5c
BN
159 unsigned long t_pflags; /* saved process flags state */
160} xfs_trans_t;
161
1da177e4
LT
162/*
163 * XFS transaction mechanism exported interfaces that are
164 * actually macros.
165 */
1da177e4
LT
166#define xfs_trans_set_sync(tp) ((tp)->t_flags |= XFS_TRANS_SYNC)
167
742ae1e3 168#if defined(DEBUG) || defined(XFS_WARN)
20f4ebf2
DC
169#define xfs_trans_agblocks_delta(tp, d) ((tp)->t_ag_freeblks_delta += (int64_t)d)
170#define xfs_trans_agflist_delta(tp, d) ((tp)->t_ag_flist_delta += (int64_t)d)
171#define xfs_trans_agbtree_delta(tp, d) ((tp)->t_ag_btree_delta += (int64_t)d)
1da177e4
LT
172#else
173#define xfs_trans_agblocks_delta(tp, d)
174#define xfs_trans_agflist_delta(tp, d)
175#define xfs_trans_agbtree_delta(tp, d)
176#endif
177
178/*
179 * XFS transaction mechanism exported interfaces.
180 */
253f4911
CH
181int xfs_trans_alloc(struct xfs_mount *mp, struct xfs_trans_res *resp,
182 uint blocks, uint rtextents, uint flags,
183 struct xfs_trans **tpp);
e89c0413
DW
184int xfs_trans_alloc_empty(struct xfs_mount *mp,
185 struct xfs_trans **tpp);
20f4ebf2 186void xfs_trans_mod_sb(xfs_trans_t *, uint, int64_t);
de2a4f59 187
9676b54e
DW
188int xfs_trans_get_buf_map(struct xfs_trans *tp, struct xfs_buftarg *target,
189 struct xfs_buf_map *map, int nmaps, xfs_buf_flags_t flags,
190 struct xfs_buf **bpp);
de2a4f59 191
ce92464c 192static inline int
de2a4f59
DC
193xfs_trans_get_buf(
194 struct xfs_trans *tp,
195 struct xfs_buftarg *target,
196 xfs_daddr_t blkno,
197 int numblks,
ce92464c
DW
198 uint flags,
199 struct xfs_buf **bpp)
de2a4f59 200{
c3f8fc73 201 DEFINE_SINGLE_BUF_MAP(map, blkno, numblks);
ce92464c 202 return xfs_trans_get_buf_map(tp, target, &map, 1, flags, bpp);
de2a4f59
DC
203}
204
205int xfs_trans_read_buf_map(struct xfs_mount *mp,
206 struct xfs_trans *tp,
207 struct xfs_buftarg *target,
208 struct xfs_buf_map *map, int nmaps,
209 xfs_buf_flags_t flags,
c3f8fc73 210 struct xfs_buf **bpp,
1813dd64 211 const struct xfs_buf_ops *ops);
de2a4f59
DC
212
213static inline int
214xfs_trans_read_buf(
215 struct xfs_mount *mp,
216 struct xfs_trans *tp,
217 struct xfs_buftarg *target,
218 xfs_daddr_t blkno,
219 int numblks,
220 xfs_buf_flags_t flags,
c3f8fc73 221 struct xfs_buf **bpp,
1813dd64 222 const struct xfs_buf_ops *ops)
de2a4f59 223{
c3f8fc73
DC
224 DEFINE_SINGLE_BUF_MAP(map, blkno, numblks);
225 return xfs_trans_read_buf_map(mp, tp, target, &map, 1,
1813dd64 226 flags, bpp, ops);
de2a4f59
DC
227}
228
cead0b10 229struct xfs_buf *xfs_trans_getsb(struct xfs_trans *);
1da177e4
LT
230
231void xfs_trans_brelse(xfs_trans_t *, struct xfs_buf *);
232void xfs_trans_bjoin(xfs_trans_t *, struct xfs_buf *);
233void xfs_trans_bhold(xfs_trans_t *, struct xfs_buf *);
efa092f3 234void xfs_trans_bhold_release(xfs_trans_t *, struct xfs_buf *);
1da177e4
LT
235void xfs_trans_binval(xfs_trans_t *, struct xfs_buf *);
236void xfs_trans_inode_buf(xfs_trans_t *, struct xfs_buf *);
1da177e4 237void xfs_trans_stale_inode_buf(xfs_trans_t *, struct xfs_buf *);
a5814bce 238bool xfs_trans_ordered_buf(xfs_trans_t *, struct xfs_buf *);
1da177e4
LT
239void xfs_trans_dquot_buf(xfs_trans_t *, struct xfs_buf *, uint);
240void xfs_trans_inode_alloc_buf(xfs_trans_t *, struct xfs_buf *);
dcd79a14 241void xfs_trans_ichgtime(struct xfs_trans *, struct xfs_inode *, int);
ddc3415a 242void xfs_trans_ijoin(struct xfs_trans *, struct xfs_inode *, uint);
9684010d
BF
243void xfs_trans_log_buf(struct xfs_trans *, struct xfs_buf *, uint,
244 uint);
245void xfs_trans_dirty_buf(struct xfs_trans *, struct xfs_buf *);
38b6238e 246bool xfs_trans_buf_is_dirty(struct xfs_buf *bp);
1da177e4 247void xfs_trans_log_inode(xfs_trans_t *, struct xfs_inode *, uint);
9749fee8 248
70393313 249int xfs_trans_commit(struct xfs_trans *);
411350df
CH
250int xfs_trans_roll(struct xfs_trans **);
251int xfs_trans_roll_inode(struct xfs_trans **, struct xfs_inode *);
4906e215 252void xfs_trans_cancel(xfs_trans_t *);
249a8c11
DC
253int xfs_trans_ail_init(struct xfs_mount *);
254void xfs_trans_ail_destroy(struct xfs_mount *);
1da177e4 255
a4fbe6ab
DC
256void xfs_trans_buf_set_type(struct xfs_trans *, struct xfs_buf *,
257 enum xfs_blft);
258void xfs_trans_buf_copy_type(struct xfs_buf *dst_bp,
259 struct xfs_buf *src_bp);
260
a8272ce0
DC
261extern kmem_zone_t *xfs_trans_zone;
262
4e919af7
DW
263static inline struct xfs_log_item *
264xfs_trans_item_relog(
265 struct xfs_log_item *lip,
266 struct xfs_trans *tp)
267{
268 return lip->li_ops->iop_relog(lip, tp);
269}
270
1da177e4 271#endif /* __XFS_TRANS_H__ */
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