Loading...
1/*
2 * Copyright (c) 2000-2002,2005 Silicon Graphics, Inc.
3 * All Rights Reserved.
4 *
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.
8 *
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.
13 *
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
17 */
18#ifndef __XFS_TRANS_H__
19#define __XFS_TRANS_H__
20
21/* kernel only transaction subsystem defines */
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;
33struct xfs_trans_res;
34struct xfs_dquot_acct;
35struct xfs_rud_log_item;
36struct xfs_rui_log_item;
37struct xfs_btree_cur;
38struct xfs_cui_log_item;
39struct xfs_cud_log_item;
40struct xfs_defer_ops;
41struct xfs_bui_log_item;
42struct xfs_bud_log_item;
43
44typedef struct xfs_log_item {
45 struct list_head li_ail; /* AIL pointers */
46 xfs_lsn_t li_lsn; /* last on-disk lsn */
47 struct xfs_log_item_desc *li_desc; /* ptr to current desc*/
48 struct xfs_mount *li_mountp; /* ptr to fs mount */
49 struct xfs_ail *li_ailp; /* ptr to AIL */
50 uint li_type; /* item type */
51 uint li_flags; /* misc flags */
52 struct xfs_buf *li_buf; /* real buffer pointer */
53 struct list_head li_bio_list; /* buffer item list */
54 void (*li_cb)(struct xfs_buf *,
55 struct xfs_log_item *);
56 /* buffer item iodone */
57 /* callback func */
58 const struct xfs_item_ops *li_ops; /* function list */
59
60 /* delayed logging */
61 struct list_head li_cil; /* CIL pointers */
62 struct xfs_log_vec *li_lv; /* active log vector */
63 struct xfs_log_vec *li_lv_shadow; /* standby vector */
64 xfs_lsn_t li_seq; /* CIL commit seq */
65} xfs_log_item_t;
66
67#define XFS_LI_IN_AIL 0x1
68#define XFS_LI_ABORTED 0x2
69#define XFS_LI_FAILED 0x4
70
71#define XFS_LI_FLAGS \
72 { XFS_LI_IN_AIL, "IN_AIL" }, \
73 { XFS_LI_ABORTED, "ABORTED" }, \
74 { XFS_LI_FAILED, "FAILED" }
75
76struct xfs_item_ops {
77 void (*iop_size)(xfs_log_item_t *, int *, int *);
78 void (*iop_format)(xfs_log_item_t *, struct xfs_log_vec *);
79 void (*iop_pin)(xfs_log_item_t *);
80 void (*iop_unpin)(xfs_log_item_t *, int remove);
81 uint (*iop_push)(struct xfs_log_item *, struct list_head *);
82 void (*iop_unlock)(xfs_log_item_t *);
83 xfs_lsn_t (*iop_committed)(xfs_log_item_t *, xfs_lsn_t);
84 void (*iop_committing)(xfs_log_item_t *, xfs_lsn_t);
85 void (*iop_error)(xfs_log_item_t *, xfs_buf_t *);
86};
87
88void xfs_log_item_init(struct xfs_mount *mp, struct xfs_log_item *item,
89 int type, const struct xfs_item_ops *ops);
90
91/*
92 * Return values for the iop_push() routines.
93 */
94#define XFS_ITEM_SUCCESS 0
95#define XFS_ITEM_PINNED 1
96#define XFS_ITEM_LOCKED 2
97#define XFS_ITEM_FLUSHING 3
98
99
100/*
101 * This is the structure maintained for every active transaction.
102 */
103typedef struct xfs_trans {
104 unsigned int t_magic; /* magic number */
105 unsigned int t_log_res; /* amt of log space resvd */
106 unsigned int t_log_count; /* count for perm log res */
107 unsigned int t_blk_res; /* # of blocks resvd */
108 unsigned int t_blk_res_used; /* # of resvd blocks used */
109 unsigned int t_rtx_res; /* # of rt extents resvd */
110 unsigned int t_rtx_res_used; /* # of resvd rt extents used */
111 struct xlog_ticket *t_ticket; /* log mgr ticket */
112 struct xfs_mount *t_mountp; /* ptr to fs mount struct */
113 struct xfs_dquot_acct *t_dqinfo; /* acctg info for dquots */
114 unsigned int t_flags; /* misc flags */
115 int64_t t_icount_delta; /* superblock icount change */
116 int64_t t_ifree_delta; /* superblock ifree change */
117 int64_t t_fdblocks_delta; /* superblock fdblocks chg */
118 int64_t t_res_fdblocks_delta; /* on-disk only chg */
119 int64_t t_frextents_delta;/* superblock freextents chg*/
120 int64_t t_res_frextents_delta; /* on-disk only chg */
121#if defined(DEBUG) || defined(XFS_WARN)
122 int64_t t_ag_freeblks_delta; /* debugging counter */
123 int64_t t_ag_flist_delta; /* debugging counter */
124 int64_t t_ag_btree_delta; /* debugging counter */
125#endif
126 int64_t t_dblocks_delta;/* superblock dblocks change */
127 int64_t t_agcount_delta;/* superblock agcount change */
128 int64_t t_imaxpct_delta;/* superblock imaxpct change */
129 int64_t t_rextsize_delta;/* superblock rextsize chg */
130 int64_t t_rbmblocks_delta;/* superblock rbmblocks chg */
131 int64_t t_rblocks_delta;/* superblock rblocks change */
132 int64_t t_rextents_delta;/* superblocks rextents chg */
133 int64_t t_rextslog_delta;/* superblocks rextslog chg */
134 struct list_head t_items; /* log item descriptors */
135 struct list_head t_busy; /* list of busy extents */
136 unsigned long t_pflags; /* saved process flags state */
137} xfs_trans_t;
138
139/*
140 * XFS transaction mechanism exported interfaces that are
141 * actually macros.
142 */
143#define xfs_trans_set_sync(tp) ((tp)->t_flags |= XFS_TRANS_SYNC)
144
145#if defined(DEBUG) || defined(XFS_WARN)
146#define xfs_trans_agblocks_delta(tp, d) ((tp)->t_ag_freeblks_delta += (int64_t)d)
147#define xfs_trans_agflist_delta(tp, d) ((tp)->t_ag_flist_delta += (int64_t)d)
148#define xfs_trans_agbtree_delta(tp, d) ((tp)->t_ag_btree_delta += (int64_t)d)
149#else
150#define xfs_trans_agblocks_delta(tp, d)
151#define xfs_trans_agflist_delta(tp, d)
152#define xfs_trans_agbtree_delta(tp, d)
153#endif
154
155/*
156 * XFS transaction mechanism exported interfaces.
157 */
158int xfs_trans_alloc(struct xfs_mount *mp, struct xfs_trans_res *resp,
159 uint blocks, uint rtextents, uint flags,
160 struct xfs_trans **tpp);
161int xfs_trans_alloc_empty(struct xfs_mount *mp,
162 struct xfs_trans **tpp);
163void xfs_trans_mod_sb(xfs_trans_t *, uint, int64_t);
164
165struct xfs_buf *xfs_trans_get_buf_map(struct xfs_trans *tp,
166 struct xfs_buftarg *target,
167 struct xfs_buf_map *map, int nmaps,
168 uint flags);
169
170static inline struct xfs_buf *
171xfs_trans_get_buf(
172 struct xfs_trans *tp,
173 struct xfs_buftarg *target,
174 xfs_daddr_t blkno,
175 int numblks,
176 uint flags)
177{
178 DEFINE_SINGLE_BUF_MAP(map, blkno, numblks);
179 return xfs_trans_get_buf_map(tp, target, &map, 1, flags);
180}
181
182int xfs_trans_read_buf_map(struct xfs_mount *mp,
183 struct xfs_trans *tp,
184 struct xfs_buftarg *target,
185 struct xfs_buf_map *map, int nmaps,
186 xfs_buf_flags_t flags,
187 struct xfs_buf **bpp,
188 const struct xfs_buf_ops *ops);
189
190static inline int
191xfs_trans_read_buf(
192 struct xfs_mount *mp,
193 struct xfs_trans *tp,
194 struct xfs_buftarg *target,
195 xfs_daddr_t blkno,
196 int numblks,
197 xfs_buf_flags_t flags,
198 struct xfs_buf **bpp,
199 const struct xfs_buf_ops *ops)
200{
201 DEFINE_SINGLE_BUF_MAP(map, blkno, numblks);
202 return xfs_trans_read_buf_map(mp, tp, target, &map, 1,
203 flags, bpp, ops);
204}
205
206struct xfs_buf *xfs_trans_getsb(xfs_trans_t *, struct xfs_mount *, int);
207
208void xfs_trans_brelse(xfs_trans_t *, struct xfs_buf *);
209void xfs_trans_bjoin(xfs_trans_t *, struct xfs_buf *);
210void xfs_trans_bhold(xfs_trans_t *, struct xfs_buf *);
211void xfs_trans_bhold_release(xfs_trans_t *, struct xfs_buf *);
212void xfs_trans_binval(xfs_trans_t *, struct xfs_buf *);
213void xfs_trans_inode_buf(xfs_trans_t *, struct xfs_buf *);
214void xfs_trans_stale_inode_buf(xfs_trans_t *, struct xfs_buf *);
215bool xfs_trans_ordered_buf(xfs_trans_t *, struct xfs_buf *);
216void xfs_trans_dquot_buf(xfs_trans_t *, struct xfs_buf *, uint);
217void xfs_trans_inode_alloc_buf(xfs_trans_t *, struct xfs_buf *);
218void xfs_trans_ichgtime(struct xfs_trans *, struct xfs_inode *, int);
219void xfs_trans_ijoin(struct xfs_trans *, struct xfs_inode *, uint);
220void xfs_trans_log_buf(struct xfs_trans *, struct xfs_buf *, uint,
221 uint);
222void xfs_trans_dirty_buf(struct xfs_trans *, struct xfs_buf *);
223void xfs_trans_log_inode(xfs_trans_t *, struct xfs_inode *, uint);
224
225void xfs_extent_free_init_defer_op(void);
226struct xfs_efd_log_item *xfs_trans_get_efd(struct xfs_trans *,
227 struct xfs_efi_log_item *,
228 uint);
229int xfs_trans_free_extent(struct xfs_trans *,
230 struct xfs_efd_log_item *, xfs_fsblock_t,
231 xfs_extlen_t, struct xfs_owner_info *);
232int xfs_trans_commit(struct xfs_trans *);
233int xfs_trans_roll(struct xfs_trans **);
234int xfs_trans_roll_inode(struct xfs_trans **, struct xfs_inode *);
235void xfs_trans_cancel(xfs_trans_t *);
236int xfs_trans_ail_init(struct xfs_mount *);
237void xfs_trans_ail_destroy(struct xfs_mount *);
238
239void xfs_trans_buf_set_type(struct xfs_trans *, struct xfs_buf *,
240 enum xfs_blft);
241void xfs_trans_buf_copy_type(struct xfs_buf *dst_bp,
242 struct xfs_buf *src_bp);
243
244extern kmem_zone_t *xfs_trans_zone;
245extern kmem_zone_t *xfs_log_item_desc_zone;
246
247/* rmap updates */
248enum xfs_rmap_intent_type;
249
250void xfs_rmap_update_init_defer_op(void);
251struct xfs_rud_log_item *xfs_trans_get_rud(struct xfs_trans *tp,
252 struct xfs_rui_log_item *ruip);
253int xfs_trans_log_finish_rmap_update(struct xfs_trans *tp,
254 struct xfs_rud_log_item *rudp, enum xfs_rmap_intent_type type,
255 uint64_t owner, int whichfork, xfs_fileoff_t startoff,
256 xfs_fsblock_t startblock, xfs_filblks_t blockcount,
257 xfs_exntst_t state, struct xfs_btree_cur **pcur);
258
259/* refcount updates */
260enum xfs_refcount_intent_type;
261
262void xfs_refcount_update_init_defer_op(void);
263struct xfs_cud_log_item *xfs_trans_get_cud(struct xfs_trans *tp,
264 struct xfs_cui_log_item *cuip);
265int xfs_trans_log_finish_refcount_update(struct xfs_trans *tp,
266 struct xfs_cud_log_item *cudp, struct xfs_defer_ops *dfops,
267 enum xfs_refcount_intent_type type, xfs_fsblock_t startblock,
268 xfs_extlen_t blockcount, xfs_fsblock_t *new_fsb,
269 xfs_extlen_t *new_len, struct xfs_btree_cur **pcur);
270
271/* mapping updates */
272enum xfs_bmap_intent_type;
273
274void xfs_bmap_update_init_defer_op(void);
275struct xfs_bud_log_item *xfs_trans_get_bud(struct xfs_trans *tp,
276 struct xfs_bui_log_item *buip);
277int xfs_trans_log_finish_bmap_update(struct xfs_trans *tp,
278 struct xfs_bud_log_item *rudp, struct xfs_defer_ops *dfops,
279 enum xfs_bmap_intent_type type, struct xfs_inode *ip,
280 int whichfork, xfs_fileoff_t startoff, xfs_fsblock_t startblock,
281 xfs_filblks_t *blockcount, xfs_exntst_t state);
282
283#endif /* __XFS_TRANS_H__ */
1// SPDX-License-Identifier: GPL-2.0
2/*
3 * Copyright (c) 2000-2002,2005 Silicon Graphics, Inc.
4 * All Rights Reserved.
5 */
6#ifndef __XFS_TRANS_H__
7#define __XFS_TRANS_H__
8
9/* kernel only transaction subsystem defines */
10
11struct xlog;
12struct xfs_buf;
13struct xfs_buftarg;
14struct xfs_efd_log_item;
15struct xfs_efi_log_item;
16struct xfs_inode;
17struct xfs_item_ops;
18struct xfs_log_iovec;
19struct xfs_mount;
20struct xfs_trans;
21struct xfs_trans_res;
22struct xfs_dquot_acct;
23struct xfs_rud_log_item;
24struct xfs_rui_log_item;
25struct xfs_btree_cur;
26struct xfs_cui_log_item;
27struct xfs_cud_log_item;
28struct xfs_bui_log_item;
29struct xfs_bud_log_item;
30
31struct xfs_log_item {
32 struct list_head li_ail; /* AIL pointers */
33 struct list_head li_trans; /* transaction list */
34 xfs_lsn_t li_lsn; /* last on-disk lsn */
35 struct xlog *li_log;
36 struct xfs_ail *li_ailp; /* ptr to AIL */
37 uint li_type; /* item type */
38 unsigned long li_flags; /* misc flags */
39 struct xfs_buf *li_buf; /* real buffer pointer */
40 struct list_head li_bio_list; /* buffer item list */
41 const struct xfs_item_ops *li_ops; /* function list */
42
43 /* delayed logging */
44 struct list_head li_cil; /* CIL pointers */
45 struct xfs_log_vec *li_lv; /* active log vector */
46 struct xfs_log_vec *li_lv_shadow; /* standby vector */
47 xfs_csn_t li_seq; /* CIL commit seq */
48 uint32_t li_order_id; /* CIL commit order */
49};
50
51/*
52 * li_flags use the (set/test/clear)_bit atomic interfaces because updates can
53 * race with each other and we don't want to have to use the AIL lock to
54 * serialise all updates.
55 */
56#define XFS_LI_IN_AIL 0
57#define XFS_LI_ABORTED 1
58#define XFS_LI_FAILED 2
59#define XFS_LI_DIRTY 3
60#define XFS_LI_WHITEOUT 4
61#define XFS_LI_FLUSHING 5
62
63#define XFS_LI_FLAGS \
64 { (1u << XFS_LI_IN_AIL), "IN_AIL" }, \
65 { (1u << XFS_LI_ABORTED), "ABORTED" }, \
66 { (1u << XFS_LI_FAILED), "FAILED" }, \
67 { (1u << XFS_LI_DIRTY), "DIRTY" }, \
68 { (1u << XFS_LI_WHITEOUT), "WHITEOUT" }, \
69 { (1u << XFS_LI_FLUSHING), "FLUSHING" }
70
71struct xfs_item_ops {
72 unsigned flags;
73 void (*iop_size)(struct xfs_log_item *, int *, int *);
74 void (*iop_format)(struct xfs_log_item *, struct xfs_log_vec *);
75 void (*iop_pin)(struct xfs_log_item *);
76 void (*iop_unpin)(struct xfs_log_item *, int remove);
77 uint64_t (*iop_sort)(struct xfs_log_item *lip);
78 int (*iop_precommit)(struct xfs_trans *tp, struct xfs_log_item *lip);
79 void (*iop_committing)(struct xfs_log_item *lip, xfs_csn_t seq);
80 xfs_lsn_t (*iop_committed)(struct xfs_log_item *, xfs_lsn_t);
81 uint (*iop_push)(struct xfs_log_item *, struct list_head *);
82 void (*iop_release)(struct xfs_log_item *);
83 bool (*iop_match)(struct xfs_log_item *item, uint64_t id);
84 struct xfs_log_item *(*iop_intent)(struct xfs_log_item *intent_done);
85};
86
87/*
88 * Log item ops flags
89 */
90/*
91 * Release the log item when the journal commits instead of inserting into the
92 * AIL for writeback tracking and/or log tail pinning.
93 */
94#define XFS_ITEM_RELEASE_WHEN_COMMITTED (1 << 0)
95#define XFS_ITEM_INTENT (1 << 1)
96#define XFS_ITEM_INTENT_DONE (1 << 2)
97
98static inline bool
99xlog_item_is_intent(struct xfs_log_item *lip)
100{
101 return lip->li_ops->flags & XFS_ITEM_INTENT;
102}
103
104static inline bool
105xlog_item_is_intent_done(struct xfs_log_item *lip)
106{
107 return lip->li_ops->flags & XFS_ITEM_INTENT_DONE;
108}
109
110void xfs_log_item_init(struct xfs_mount *mp, struct xfs_log_item *item,
111 int type, const struct xfs_item_ops *ops);
112
113/*
114 * Return values for the iop_push() routines.
115 */
116#define XFS_ITEM_SUCCESS 0
117#define XFS_ITEM_PINNED 1
118#define XFS_ITEM_LOCKED 2
119#define XFS_ITEM_FLUSHING 3
120
121/*
122 * This is the structure maintained for every active transaction.
123 */
124typedef struct xfs_trans {
125 unsigned int t_magic; /* magic number */
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 */
132 unsigned int t_flags; /* misc flags */
133 xfs_agnumber_t t_highest_agno; /* highest AGF locked */
134 struct xlog_ticket *t_ticket; /* log mgr ticket */
135 struct xfs_mount *t_mountp; /* ptr to fs mount struct */
136 struct xfs_dquot_acct *t_dqinfo; /* acctg info for dquots */
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 */
143 int64_t t_dblocks_delta;/* superblock dblocks change */
144 int64_t t_agcount_delta;/* superblock agcount change */
145 int64_t t_imaxpct_delta;/* superblock imaxpct change */
146 int64_t t_rextsize_delta;/* superblock rextsize chg */
147 int64_t t_rbmblocks_delta;/* superblock rbmblocks chg */
148 int64_t t_rblocks_delta;/* superblock rblocks change */
149 int64_t t_rextents_delta;/* superblocks rextents chg */
150 int64_t t_rextslog_delta;/* superblocks rextslog chg */
151 int64_t t_rgcount_delta; /* realtime group count */
152 struct list_head t_items; /* log item descriptors */
153 struct list_head t_busy; /* list of busy extents */
154 struct list_head t_dfops; /* deferred operations */
155 unsigned long t_pflags; /* saved process flags state */
156} xfs_trans_t;
157
158/*
159 * XFS transaction mechanism exported interfaces that are
160 * actually macros.
161 */
162#define xfs_trans_set_sync(tp) ((tp)->t_flags |= XFS_TRANS_SYNC)
163
164/*
165 * XFS transaction mechanism exported interfaces.
166 */
167int xfs_trans_alloc(struct xfs_mount *mp, struct xfs_trans_res *resp,
168 uint blocks, uint rtextents, uint flags,
169 struct xfs_trans **tpp);
170int xfs_trans_reserve_more(struct xfs_trans *tp,
171 unsigned int blocks, unsigned int rtextents);
172int xfs_trans_alloc_empty(struct xfs_mount *mp,
173 struct xfs_trans **tpp);
174void xfs_trans_mod_sb(xfs_trans_t *, uint, int64_t);
175
176int xfs_trans_get_buf_map(struct xfs_trans *tp, struct xfs_buftarg *target,
177 struct xfs_buf_map *map, int nmaps, xfs_buf_flags_t flags,
178 struct xfs_buf **bpp);
179
180static inline int
181xfs_trans_get_buf(
182 struct xfs_trans *tp,
183 struct xfs_buftarg *target,
184 xfs_daddr_t blkno,
185 int numblks,
186 xfs_buf_flags_t flags,
187 struct xfs_buf **bpp)
188{
189 DEFINE_SINGLE_BUF_MAP(map, blkno, numblks);
190 return xfs_trans_get_buf_map(tp, target, &map, 1, flags, bpp);
191}
192
193int 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);
200
201static inline int
202xfs_trans_read_buf(
203 struct xfs_mount *mp,
204 struct xfs_trans *tp,
205 struct xfs_buftarg *target,
206 xfs_daddr_t blkno,
207 int numblks,
208 xfs_buf_flags_t flags,
209 struct xfs_buf **bpp,
210 const struct xfs_buf_ops *ops)
211{
212 DEFINE_SINGLE_BUF_MAP(map, blkno, numblks);
213 return xfs_trans_read_buf_map(mp, tp, target, &map, 1,
214 flags, bpp, ops);
215}
216
217struct xfs_buf *xfs_trans_getsb(struct xfs_trans *);
218struct xfs_buf *xfs_trans_getrtsb(struct xfs_trans *tp);
219
220void xfs_trans_brelse(xfs_trans_t *, struct xfs_buf *);
221void xfs_trans_bjoin(xfs_trans_t *, struct xfs_buf *);
222void xfs_trans_bdetach(struct xfs_trans *tp, struct xfs_buf *bp);
223void xfs_trans_bhold(xfs_trans_t *, struct xfs_buf *);
224void xfs_trans_bhold_release(xfs_trans_t *, struct xfs_buf *);
225void xfs_trans_binval(xfs_trans_t *, struct xfs_buf *);
226void xfs_trans_inode_buf(xfs_trans_t *, struct xfs_buf *);
227void xfs_trans_stale_inode_buf(xfs_trans_t *, struct xfs_buf *);
228bool xfs_trans_ordered_buf(xfs_trans_t *, struct xfs_buf *);
229void xfs_trans_dquot_buf(xfs_trans_t *, struct xfs_buf *, uint);
230void xfs_trans_inode_alloc_buf(xfs_trans_t *, struct xfs_buf *);
231void xfs_trans_ijoin(struct xfs_trans *, struct xfs_inode *, uint);
232void xfs_trans_log_buf(struct xfs_trans *, struct xfs_buf *, uint,
233 uint);
234void xfs_trans_dirty_buf(struct xfs_trans *, struct xfs_buf *);
235bool xfs_trans_buf_is_dirty(struct xfs_buf *bp);
236void xfs_trans_log_inode(xfs_trans_t *, struct xfs_inode *, uint);
237
238int xfs_trans_commit(struct xfs_trans *);
239int xfs_trans_roll(struct xfs_trans **);
240int xfs_trans_roll_inode(struct xfs_trans **, struct xfs_inode *);
241void xfs_trans_cancel(xfs_trans_t *);
242int xfs_trans_ail_init(struct xfs_mount *);
243void xfs_trans_ail_destroy(struct xfs_mount *);
244
245void xfs_trans_buf_set_type(struct xfs_trans *, struct xfs_buf *,
246 enum xfs_blft);
247void xfs_trans_buf_copy_type(struct xfs_buf *dst_bp,
248 struct xfs_buf *src_bp);
249
250extern struct kmem_cache *xfs_trans_cache;
251
252struct xfs_dquot;
253
254int xfs_trans_alloc_inode(struct xfs_inode *ip, struct xfs_trans_res *resv,
255 unsigned int dblocks, unsigned int rblocks, bool force,
256 struct xfs_trans **tpp);
257int xfs_trans_reserve_more_inode(struct xfs_trans *tp, struct xfs_inode *ip,
258 unsigned int dblocks, unsigned int rblocks, bool force_quota);
259int xfs_trans_alloc_icreate(struct xfs_mount *mp, struct xfs_trans_res *resv,
260 struct xfs_dquot *udqp, struct xfs_dquot *gdqp,
261 struct xfs_dquot *pdqp, unsigned int dblocks,
262 struct xfs_trans **tpp);
263int xfs_trans_alloc_ichange(struct xfs_inode *ip, struct xfs_dquot *udqp,
264 struct xfs_dquot *gdqp, struct xfs_dquot *pdqp, bool force,
265 struct xfs_trans **tpp);
266int xfs_trans_alloc_dir(struct xfs_inode *dp, struct xfs_trans_res *resv,
267 struct xfs_inode *ip, unsigned int *dblocks,
268 struct xfs_trans **tpp, int *nospace_error);
269
270static inline void
271xfs_trans_set_context(
272 struct xfs_trans *tp)
273{
274 tp->t_pflags = memalloc_nofs_save();
275}
276
277static inline void
278xfs_trans_clear_context(
279 struct xfs_trans *tp)
280{
281 memalloc_nofs_restore(tp->t_pflags);
282}
283
284static inline void
285xfs_trans_switch_context(
286 struct xfs_trans *old_tp,
287 struct xfs_trans *new_tp)
288{
289 new_tp->t_pflags = old_tp->t_pflags;
290 old_tp->t_pflags = 0;
291}
292
293#endif /* __XFS_TRANS_H__ */