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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 | 10 | |
d86142dd | 11 | struct xlog; |
847fff5c BN |
12 | struct xfs_buf; |
13 | struct xfs_buftarg; | |
14 | struct xfs_efd_log_item; | |
15 | struct xfs_efi_log_item; | |
16 | struct xfs_inode; | |
17 | struct xfs_item_ops; | |
18 | struct xfs_log_iovec; | |
847fff5c BN |
19 | struct xfs_mount; |
20 | struct xfs_trans; | |
3d3c8b52 | 21 | struct xfs_trans_res; |
847fff5c | 22 | struct xfs_dquot_acct; |
f8dbebef DW |
23 | struct xfs_rud_log_item; |
24 | struct xfs_rui_log_item; | |
9c194644 | 25 | struct xfs_btree_cur; |
f997ee21 | 26 | struct xfs_cui_log_item; |
33ba6129 | 27 | struct xfs_cud_log_item; |
77d61fe4 | 28 | struct xfs_bui_log_item; |
9f3afb57 | 29 | struct xfs_bud_log_item; |
847fff5c | 30 | |
efe2330f | 31 | struct xfs_log_item { |
847fff5c | 32 | struct list_head li_ail; /* AIL pointers */ |
e6631f85 | 33 | struct list_head li_trans; /* transaction list */ |
847fff5c | 34 | xfs_lsn_t li_lsn; /* last on-disk lsn */ |
d86142dd | 35 | struct xlog *li_log; |
fc1829f3 | 36 | struct xfs_ail *li_ailp; /* ptr to AIL */ |
847fff5c | 37 | uint li_type; /* item type */ |
22525c17 | 38 | unsigned long li_flags; /* misc flags */ |
d3a304b6 | 39 | struct xfs_buf *li_buf; /* real buffer pointer */ |
643c8c05 | 40 | struct list_head li_bio_list; /* buffer item list */ |
272e42b2 | 41 | const struct xfs_item_ops *li_ops; /* function list */ |
71e330b5 DC |
42 | |
43 | /* delayed logging */ | |
44 | struct list_head li_cil; /* CIL pointers */ | |
45 | struct xfs_log_vec *li_lv; /* active log vector */ | |
b1c5ebb2 | 46 | struct xfs_log_vec *li_lv_shadow; /* standby vector */ |
5f9b4b0d | 47 | xfs_csn_t li_seq; /* CIL commit seq */ |
efe2330f | 48 | }; |
847fff5c | 49 | |
22525c17 DC |
50 | /* |
51 | * li_flags use the (set/test/clear)_bit atomic interfaces because updates can | |
52 | * race with each other and we don't want to have to use the AIL lock to | |
53 | * serialise all updates. | |
54 | */ | |
55 | #define XFS_LI_IN_AIL 0 | |
56 | #define XFS_LI_ABORTED 1 | |
57 | #define XFS_LI_FAILED 2 | |
0d227466 DC |
58 | #define XFS_LI_DIRTY 3 |
59 | #define XFS_LI_WHITEOUT 4 | |
847fff5c | 60 | |
0b1b213f | 61 | #define XFS_LI_FLAGS \ |
22d53f48 DC |
62 | { (1u << XFS_LI_IN_AIL), "IN_AIL" }, \ |
63 | { (1u << XFS_LI_ABORTED), "ABORTED" }, \ | |
64 | { (1u << XFS_LI_FAILED), "FAILED" }, \ | |
0d227466 DC |
65 | { (1u << XFS_LI_DIRTY), "DIRTY" }, \ |
66 | { (1u << XFS_LI_WHITEOUT), "WHITEOUT" } | |
0b1b213f | 67 | |
272e42b2 | 68 | struct xfs_item_ops { |
9ce632a2 | 69 | unsigned flags; |
efe2330f CH |
70 | void (*iop_size)(struct xfs_log_item *, int *, int *); |
71 | void (*iop_format)(struct xfs_log_item *, struct xfs_log_vec *); | |
72 | void (*iop_pin)(struct xfs_log_item *); | |
73 | void (*iop_unpin)(struct xfs_log_item *, int remove); | |
43ff2122 | 74 | uint (*iop_push)(struct xfs_log_item *, struct list_head *); |
5f9b4b0d | 75 | void (*iop_committing)(struct xfs_log_item *lip, xfs_csn_t seq); |
ddf92053 | 76 | void (*iop_release)(struct xfs_log_item *); |
efe2330f | 77 | xfs_lsn_t (*iop_committed)(struct xfs_log_item *, xfs_lsn_t); |
e6fff81e DW |
78 | int (*iop_recover)(struct xfs_log_item *lip, |
79 | struct list_head *capture_list); | |
154c733a | 80 | bool (*iop_match)(struct xfs_log_item *item, uint64_t id); |
4e919af7 DW |
81 | struct xfs_log_item *(*iop_relog)(struct xfs_log_item *intent, |
82 | struct xfs_trans *tp); | |
c23ab603 | 83 | struct xfs_log_item *(*iop_intent)(struct xfs_log_item *intent_done); |
272e42b2 | 84 | }; |
847fff5c | 85 | |
f5b81200 DC |
86 | /* |
87 | * Log item ops flags | |
88 | */ | |
89 | /* | |
90 | * Release the log item when the journal commits instead of inserting into the | |
91 | * AIL for writeback tracking and/or log tail pinning. | |
92 | */ | |
93 | #define XFS_ITEM_RELEASE_WHEN_COMMITTED (1 << 0) | |
94 | #define XFS_ITEM_INTENT (1 << 1) | |
95 | #define XFS_ITEM_INTENT_DONE (1 << 2) | |
96 | ||
d6b8fc6c KX |
97 | static inline bool |
98 | xlog_item_is_intent(struct xfs_log_item *lip) | |
99 | { | |
f5b81200 | 100 | return lip->li_ops->flags & XFS_ITEM_INTENT; |
d6b8fc6c KX |
101 | } |
102 | ||
d6b8fc6c KX |
103 | static inline bool |
104 | xlog_item_is_intent_done(struct xfs_log_item *lip) | |
105 | { | |
f5b81200 | 106 | return lip->li_ops->flags & XFS_ITEM_INTENT_DONE; |
d6b8fc6c KX |
107 | } |
108 | ||
239880ef DC |
109 | void xfs_log_item_init(struct xfs_mount *mp, struct xfs_log_item *item, |
110 | int type, const struct xfs_item_ops *ops); | |
111 | ||
847fff5c | 112 | /* |
904c17e6 | 113 | * Return values for the iop_push() routines. |
847fff5c | 114 | */ |
43ff2122 CH |
115 | #define XFS_ITEM_SUCCESS 0 |
116 | #define XFS_ITEM_PINNED 1 | |
117 | #define XFS_ITEM_LOCKED 2 | |
118 | #define XFS_ITEM_FLUSHING 3 | |
847fff5c | 119 | |
847fff5c BN |
120 | /* |
121 | * This is the structure maintained for every active transaction. | |
122 | */ | |
123 | typedef struct xfs_trans { | |
124 | unsigned int t_magic; /* magic number */ | |
847fff5c BN |
125 | unsigned int t_log_res; /* amt of log space resvd */ |
126 | unsigned int t_log_count; /* count for perm log res */ | |
127 | unsigned int t_blk_res; /* # of blocks resvd */ | |
128 | unsigned int t_blk_res_used; /* # of resvd blocks used */ | |
129 | unsigned int t_rtx_res; /* # of rt extents resvd */ | |
130 | unsigned int t_rtx_res_used; /* # of resvd rt extents used */ | |
44fd2946 | 131 | unsigned int t_flags; /* misc flags */ |
bba59c5e | 132 | xfs_fsblock_t t_firstblock; /* first block allocated */ |
35a8a72f | 133 | struct xlog_ticket *t_ticket; /* log mgr ticket */ |
847fff5c BN |
134 | struct xfs_mount *t_mountp; /* ptr to fs mount struct */ |
135 | struct xfs_dquot_acct *t_dqinfo; /* acctg info for dquots */ | |
847fff5c BN |
136 | int64_t t_icount_delta; /* superblock icount change */ |
137 | int64_t t_ifree_delta; /* superblock ifree change */ | |
138 | int64_t t_fdblocks_delta; /* superblock fdblocks chg */ | |
139 | int64_t t_res_fdblocks_delta; /* on-disk only chg */ | |
140 | int64_t t_frextents_delta;/* superblock freextents chg*/ | |
141 | int64_t t_res_frextents_delta; /* on-disk only chg */ | |
847fff5c BN |
142 | int64_t t_dblocks_delta;/* superblock dblocks change */ |
143 | int64_t t_agcount_delta;/* superblock agcount change */ | |
144 | int64_t t_imaxpct_delta;/* superblock imaxpct change */ | |
145 | int64_t t_rextsize_delta;/* superblock rextsize chg */ | |
146 | int64_t t_rbmblocks_delta;/* superblock rbmblocks chg */ | |
147 | int64_t t_rblocks_delta;/* superblock rblocks change */ | |
148 | int64_t t_rextents_delta;/* superblocks rextents chg */ | |
149 | int64_t t_rextslog_delta;/* superblocks rextslog chg */ | |
e98c414f | 150 | struct list_head t_items; /* log item descriptors */ |
ed3b4d6c | 151 | struct list_head t_busy; /* list of busy extents */ |
9d9e6233 | 152 | struct list_head t_dfops; /* deferred operations */ |
847fff5c BN |
153 | unsigned long t_pflags; /* saved process flags state */ |
154 | } xfs_trans_t; | |
155 | ||
1da177e4 LT |
156 | /* |
157 | * XFS transaction mechanism exported interfaces that are | |
158 | * actually macros. | |
159 | */ | |
1da177e4 LT |
160 | #define xfs_trans_set_sync(tp) ((tp)->t_flags |= XFS_TRANS_SYNC) |
161 | ||
1da177e4 LT |
162 | /* |
163 | * XFS transaction mechanism exported interfaces. | |
164 | */ | |
253f4911 CH |
165 | int xfs_trans_alloc(struct xfs_mount *mp, struct xfs_trans_res *resp, |
166 | uint blocks, uint rtextents, uint flags, | |
167 | struct xfs_trans **tpp); | |
e89c0413 DW |
168 | int xfs_trans_alloc_empty(struct xfs_mount *mp, |
169 | struct xfs_trans **tpp); | |
20f4ebf2 | 170 | void xfs_trans_mod_sb(xfs_trans_t *, uint, int64_t); |
de2a4f59 | 171 | |
9676b54e DW |
172 | int xfs_trans_get_buf_map(struct xfs_trans *tp, struct xfs_buftarg *target, |
173 | struct xfs_buf_map *map, int nmaps, xfs_buf_flags_t flags, | |
174 | struct xfs_buf **bpp); | |
de2a4f59 | 175 | |
ce92464c | 176 | static inline int |
de2a4f59 DC |
177 | xfs_trans_get_buf( |
178 | struct xfs_trans *tp, | |
179 | struct xfs_buftarg *target, | |
180 | xfs_daddr_t blkno, | |
181 | int numblks, | |
b9b3fe15 | 182 | xfs_buf_flags_t flags, |
ce92464c | 183 | struct xfs_buf **bpp) |
de2a4f59 | 184 | { |
c3f8fc73 | 185 | DEFINE_SINGLE_BUF_MAP(map, blkno, numblks); |
ce92464c | 186 | return xfs_trans_get_buf_map(tp, target, &map, 1, flags, bpp); |
de2a4f59 DC |
187 | } |
188 | ||
189 | int xfs_trans_read_buf_map(struct xfs_mount *mp, | |
190 | struct xfs_trans *tp, | |
191 | struct xfs_buftarg *target, | |
192 | struct xfs_buf_map *map, int nmaps, | |
193 | xfs_buf_flags_t flags, | |
c3f8fc73 | 194 | struct xfs_buf **bpp, |
1813dd64 | 195 | const struct xfs_buf_ops *ops); |
de2a4f59 DC |
196 | |
197 | static inline int | |
198 | xfs_trans_read_buf( | |
199 | struct xfs_mount *mp, | |
200 | struct xfs_trans *tp, | |
201 | struct xfs_buftarg *target, | |
202 | xfs_daddr_t blkno, | |
203 | int numblks, | |
204 | xfs_buf_flags_t flags, | |
c3f8fc73 | 205 | struct xfs_buf **bpp, |
1813dd64 | 206 | const struct xfs_buf_ops *ops) |
de2a4f59 | 207 | { |
c3f8fc73 DC |
208 | DEFINE_SINGLE_BUF_MAP(map, blkno, numblks); |
209 | return xfs_trans_read_buf_map(mp, tp, target, &map, 1, | |
1813dd64 | 210 | flags, bpp, ops); |
de2a4f59 DC |
211 | } |
212 | ||
cead0b10 | 213 | struct xfs_buf *xfs_trans_getsb(struct xfs_trans *); |
1da177e4 LT |
214 | |
215 | void xfs_trans_brelse(xfs_trans_t *, struct xfs_buf *); | |
216 | void xfs_trans_bjoin(xfs_trans_t *, struct xfs_buf *); | |
217 | void xfs_trans_bhold(xfs_trans_t *, struct xfs_buf *); | |
efa092f3 | 218 | void xfs_trans_bhold_release(xfs_trans_t *, struct xfs_buf *); |
1da177e4 LT |
219 | void xfs_trans_binval(xfs_trans_t *, struct xfs_buf *); |
220 | void xfs_trans_inode_buf(xfs_trans_t *, struct xfs_buf *); | |
1da177e4 | 221 | void xfs_trans_stale_inode_buf(xfs_trans_t *, struct xfs_buf *); |
a5814bce | 222 | bool xfs_trans_ordered_buf(xfs_trans_t *, struct xfs_buf *); |
1da177e4 LT |
223 | void xfs_trans_dquot_buf(xfs_trans_t *, struct xfs_buf *, uint); |
224 | void xfs_trans_inode_alloc_buf(xfs_trans_t *, struct xfs_buf *); | |
dcd79a14 | 225 | void xfs_trans_ichgtime(struct xfs_trans *, struct xfs_inode *, int); |
ddc3415a | 226 | void xfs_trans_ijoin(struct xfs_trans *, struct xfs_inode *, uint); |
9684010d BF |
227 | void xfs_trans_log_buf(struct xfs_trans *, struct xfs_buf *, uint, |
228 | uint); | |
229 | void xfs_trans_dirty_buf(struct xfs_trans *, struct xfs_buf *); | |
38b6238e | 230 | bool xfs_trans_buf_is_dirty(struct xfs_buf *bp); |
1da177e4 | 231 | void xfs_trans_log_inode(xfs_trans_t *, struct xfs_inode *, uint); |
9749fee8 | 232 | |
70393313 | 233 | int xfs_trans_commit(struct xfs_trans *); |
411350df CH |
234 | int xfs_trans_roll(struct xfs_trans **); |
235 | int xfs_trans_roll_inode(struct xfs_trans **, struct xfs_inode *); | |
4906e215 | 236 | void xfs_trans_cancel(xfs_trans_t *); |
249a8c11 DC |
237 | int xfs_trans_ail_init(struct xfs_mount *); |
238 | void xfs_trans_ail_destroy(struct xfs_mount *); | |
1da177e4 | 239 | |
a4fbe6ab DC |
240 | void xfs_trans_buf_set_type(struct xfs_trans *, struct xfs_buf *, |
241 | enum xfs_blft); | |
242 | void xfs_trans_buf_copy_type(struct xfs_buf *dst_bp, | |
243 | struct xfs_buf *src_bp); | |
244 | ||
182696fb | 245 | extern struct kmem_cache *xfs_trans_cache; |
a8272ce0 | 246 | |
4e919af7 DW |
247 | static inline struct xfs_log_item * |
248 | xfs_trans_item_relog( | |
249 | struct xfs_log_item *lip, | |
250 | struct xfs_trans *tp) | |
251 | { | |
252 | return lip->li_ops->iop_relog(lip, tp); | |
253 | } | |
254 | ||
f2f7b9ff DW |
255 | struct xfs_dquot; |
256 | ||
3a1af6c3 | 257 | int xfs_trans_alloc_inode(struct xfs_inode *ip, struct xfs_trans_res *resv, |
3de4eb10 DW |
258 | unsigned int dblocks, unsigned int rblocks, bool force, |
259 | struct xfs_trans **tpp); | |
f2f7b9ff DW |
260 | int xfs_trans_alloc_icreate(struct xfs_mount *mp, struct xfs_trans_res *resv, |
261 | struct xfs_dquot *udqp, struct xfs_dquot *gdqp, | |
262 | struct xfs_dquot *pdqp, unsigned int dblocks, | |
263 | struct xfs_trans **tpp); | |
7317a03d DW |
264 | int xfs_trans_alloc_ichange(struct xfs_inode *ip, struct xfs_dquot *udqp, |
265 | struct xfs_dquot *gdqp, struct xfs_dquot *pdqp, bool force, | |
266 | struct xfs_trans **tpp); | |
871b9316 DW |
267 | int xfs_trans_alloc_dir(struct xfs_inode *dp, struct xfs_trans_res *resv, |
268 | struct xfs_inode *ip, unsigned int *dblocks, | |
269 | struct xfs_trans **tpp, int *nospace_error); | |
3a1af6c3 | 270 | |
756b1c34 DC |
271 | static inline void |
272 | xfs_trans_set_context( | |
273 | struct xfs_trans *tp) | |
274 | { | |
275 | ASSERT(current->journal_info == NULL); | |
276 | tp->t_pflags = memalloc_nofs_save(); | |
277 | current->journal_info = tp; | |
278 | } | |
279 | ||
280 | static inline void | |
281 | xfs_trans_clear_context( | |
282 | struct xfs_trans *tp) | |
283 | { | |
284 | if (current->journal_info == tp) { | |
285 | memalloc_nofs_restore(tp->t_pflags); | |
286 | current->journal_info = NULL; | |
287 | } | |
288 | } | |
289 | ||
290 | static inline void | |
291 | xfs_trans_switch_context( | |
292 | struct xfs_trans *old_tp, | |
293 | struct xfs_trans *new_tp) | |
294 | { | |
295 | ASSERT(current->journal_info == old_tp); | |
296 | new_tp->t_pflags = old_tp->t_pflags; | |
297 | old_tp->t_pflags = 0; | |
298 | current->journal_info = new_tp; | |
299 | } | |
300 | ||
1da177e4 | 301 | #endif /* __XFS_TRANS_H__ */ |