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6#ifndef __XFS_TRANS_H__
7#define __XFS_TRANS_H__
8
9
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;
18struct xfs_mount;
19struct xfs_trans;
20struct xfs_trans_res;
21struct xfs_dquot_acct;
22struct xfs_rud_log_item;
23struct xfs_rui_log_item;
24struct xfs_btree_cur;
25struct xfs_cui_log_item;
26struct xfs_cud_log_item;
27struct xfs_bui_log_item;
28struct xfs_bud_log_item;
29
30struct xfs_log_item {
31 struct list_head li_ail;
32 struct list_head li_trans;
33 xfs_lsn_t li_lsn;
34 struct xfs_mount *li_mountp;
35 struct xfs_ail *li_ailp;
36 uint li_type;
37 unsigned long li_flags;
38 struct xfs_buf *li_buf;
39 struct list_head li_bio_list;
40 const struct xfs_item_ops *li_ops;
41
42
43 struct list_head li_cil;
44 struct xfs_log_vec *li_lv;
45 struct xfs_log_vec *li_lv_shadow;
46 xfs_lsn_t li_seq;
47};
48
49
50
51
52
53
54#define XFS_LI_IN_AIL 0
55#define XFS_LI_ABORTED 1
56#define XFS_LI_FAILED 2
57#define XFS_LI_DIRTY 3
58
59#define XFS_LI_FLAGS \
60 { (1 << XFS_LI_IN_AIL), "IN_AIL" }, \
61 { (1 << XFS_LI_ABORTED), "ABORTED" }, \
62 { (1 << XFS_LI_FAILED), "FAILED" }, \
63 { (1 << XFS_LI_DIRTY), "DIRTY" }
64
65struct xfs_item_ops {
66 unsigned flags;
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);
71 uint (*iop_push)(struct xfs_log_item *, struct list_head *);
72 void (*iop_committing)(struct xfs_log_item *, xfs_lsn_t commit_lsn);
73 void (*iop_release)(struct xfs_log_item *);
74 xfs_lsn_t (*iop_committed)(struct xfs_log_item *, xfs_lsn_t);
75 int (*iop_recover)(struct xfs_log_item *lip,
76 struct list_head *capture_list);
77 bool (*iop_match)(struct xfs_log_item *item, uint64_t id);
78 struct xfs_log_item *(*iop_relog)(struct xfs_log_item *intent,
79 struct xfs_trans *tp);
80};
81
82
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
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
98
99
100
101
102#define XFS_ITEM_RELEASE_WHEN_COMMITTED (1 << 0)
103
104void xfs_log_item_init(struct xfs_mount *mp, struct xfs_log_item *item,
105 int type, const struct xfs_item_ops *ops);
106
107
108
109
110#define XFS_ITEM_SUCCESS 0
111#define XFS_ITEM_PINNED 1
112#define XFS_ITEM_LOCKED 2
113#define XFS_ITEM_FLUSHING 3
114
115
116
117
118#define XFS_DEFER_OPS_NR_INODES 2
119#define XFS_DEFER_OPS_NR_BUFS 2
120
121
122
123
124typedef struct xfs_trans {
125 unsigned int t_magic;
126 unsigned int t_log_res;
127 unsigned int t_log_count;
128 unsigned int t_blk_res;
129 unsigned int t_blk_res_used;
130 unsigned int t_rtx_res;
131 unsigned int t_rtx_res_used;
132 unsigned int t_flags;
133 xfs_fsblock_t t_firstblock;
134 struct xlog_ticket *t_ticket;
135 struct xfs_mount *t_mountp;
136 struct xfs_dquot_acct *t_dqinfo;
137 int64_t t_icount_delta;
138 int64_t t_ifree_delta;
139 int64_t t_fdblocks_delta;
140 int64_t t_res_fdblocks_delta;
141 int64_t t_frextents_delta;
142 int64_t t_res_frextents_delta;
143 int64_t t_dblocks_delta;
144 int64_t t_agcount_delta;
145 int64_t t_imaxpct_delta;
146 int64_t t_rextsize_delta;
147 int64_t t_rbmblocks_delta;
148 int64_t t_rblocks_delta;
149 int64_t t_rextents_delta;
150 int64_t t_rextslog_delta;
151 struct list_head t_items;
152 struct list_head t_busy;
153 struct list_head t_dfops;
154 unsigned long t_pflags;
155} xfs_trans_t;
156
157
158
159
160
161#define xfs_trans_set_sync(tp) ((tp)->t_flags |= XFS_TRANS_SYNC)
162
163
164
165
166int xfs_trans_alloc(struct xfs_mount *mp, struct xfs_trans_res *resp,
167 uint blocks, uint rtextents, uint flags,
168 struct xfs_trans **tpp);
169int xfs_trans_alloc_empty(struct xfs_mount *mp,
170 struct xfs_trans **tpp);
171void xfs_trans_mod_sb(xfs_trans_t *, uint, int64_t);
172
173int xfs_trans_get_buf_map(struct xfs_trans *tp, struct xfs_buftarg *target,
174 struct xfs_buf_map *map, int nmaps, xfs_buf_flags_t flags,
175 struct xfs_buf **bpp);
176
177static inline int
178xfs_trans_get_buf(
179 struct xfs_trans *tp,
180 struct xfs_buftarg *target,
181 xfs_daddr_t blkno,
182 int numblks,
183 uint flags,
184 struct xfs_buf **bpp)
185{
186 DEFINE_SINGLE_BUF_MAP(map, blkno, numblks);
187 return xfs_trans_get_buf_map(tp, target, &map, 1, flags, bpp);
188}
189
190int xfs_trans_read_buf_map(struct xfs_mount *mp,
191 struct xfs_trans *tp,
192 struct xfs_buftarg *target,
193 struct xfs_buf_map *map, int nmaps,
194 xfs_buf_flags_t flags,
195 struct xfs_buf **bpp,
196 const struct xfs_buf_ops *ops);
197
198static inline int
199xfs_trans_read_buf(
200 struct xfs_mount *mp,
201 struct xfs_trans *tp,
202 struct xfs_buftarg *target,
203 xfs_daddr_t blkno,
204 int numblks,
205 xfs_buf_flags_t flags,
206 struct xfs_buf **bpp,
207 const struct xfs_buf_ops *ops)
208{
209 DEFINE_SINGLE_BUF_MAP(map, blkno, numblks);
210 return xfs_trans_read_buf_map(mp, tp, target, &map, 1,
211 flags, bpp, ops);
212}
213
214struct xfs_buf *xfs_trans_getsb(struct xfs_trans *);
215
216void xfs_trans_brelse(xfs_trans_t *, struct xfs_buf *);
217void xfs_trans_bjoin(xfs_trans_t *, struct xfs_buf *);
218void xfs_trans_bhold(xfs_trans_t *, struct xfs_buf *);
219void xfs_trans_bhold_release(xfs_trans_t *, struct xfs_buf *);
220void xfs_trans_binval(xfs_trans_t *, struct xfs_buf *);
221void xfs_trans_inode_buf(xfs_trans_t *, struct xfs_buf *);
222void xfs_trans_stale_inode_buf(xfs_trans_t *, struct xfs_buf *);
223bool xfs_trans_ordered_buf(xfs_trans_t *, struct xfs_buf *);
224void xfs_trans_dquot_buf(xfs_trans_t *, struct xfs_buf *, uint);
225void xfs_trans_inode_alloc_buf(xfs_trans_t *, struct xfs_buf *);
226void xfs_trans_ichgtime(struct xfs_trans *, struct xfs_inode *, int);
227void xfs_trans_ijoin(struct xfs_trans *, struct xfs_inode *, uint);
228void xfs_trans_log_buf(struct xfs_trans *, struct xfs_buf *, uint,
229 uint);
230void xfs_trans_dirty_buf(struct xfs_trans *, struct xfs_buf *);
231bool xfs_trans_buf_is_dirty(struct xfs_buf *bp);
232void xfs_trans_log_inode(xfs_trans_t *, struct xfs_inode *, uint);
233
234int xfs_trans_commit(struct xfs_trans *);
235int xfs_trans_roll(struct xfs_trans **);
236int xfs_trans_roll_inode(struct xfs_trans **, struct xfs_inode *);
237void xfs_trans_cancel(xfs_trans_t *);
238int xfs_trans_ail_init(struct xfs_mount *);
239void xfs_trans_ail_destroy(struct xfs_mount *);
240
241void xfs_trans_buf_set_type(struct xfs_trans *, struct xfs_buf *,
242 enum xfs_blft);
243void xfs_trans_buf_copy_type(struct xfs_buf *dst_bp,
244 struct xfs_buf *src_bp);
245
246extern kmem_zone_t *xfs_trans_zone;
247
248static inline struct xfs_log_item *
249xfs_trans_item_relog(
250 struct xfs_log_item *lip,
251 struct xfs_trans *tp)
252{
253 return lip->li_ops->iop_relog(lip, tp);
254}
255
256struct xfs_dquot;
257
258int xfs_trans_alloc_inode(struct xfs_inode *ip, struct xfs_trans_res *resv,
259 unsigned int dblocks, unsigned int rblocks, bool force,
260 struct xfs_trans **tpp);
261int xfs_trans_alloc_icreate(struct xfs_mount *mp, struct xfs_trans_res *resv,
262 struct xfs_dquot *udqp, struct xfs_dquot *gdqp,
263 struct xfs_dquot *pdqp, unsigned int dblocks,
264 struct xfs_trans **tpp);
265int xfs_trans_alloc_ichange(struct xfs_inode *ip, struct xfs_dquot *udqp,
266 struct xfs_dquot *gdqp, struct xfs_dquot *pdqp, bool force,
267 struct xfs_trans **tpp);
268
269static inline void
270xfs_trans_set_context(
271 struct xfs_trans *tp)
272{
273 ASSERT(current->journal_info == NULL);
274 tp->t_pflags = memalloc_nofs_save();
275 current->journal_info = tp;
276}
277
278static inline void
279xfs_trans_clear_context(
280 struct xfs_trans *tp)
281{
282 if (current->journal_info == tp) {
283 memalloc_nofs_restore(tp->t_pflags);
284 current->journal_info = NULL;
285 }
286}
287
288static inline void
289xfs_trans_switch_context(
290 struct xfs_trans *old_tp,
291 struct xfs_trans *new_tp)
292{
293 ASSERT(current->journal_info == old_tp);
294 new_tp->t_pflags = old_tp->t_pflags;
295 old_tp->t_pflags = 0;
296 current->journal_info = new_tp;
297}
298
299#endif
300