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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__ */
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
21struct xfs_log_item;
22
23/*
24 * This is the structure written in the log at the head of
25 * every transaction. It identifies the type and id of the
26 * transaction, and contains the number of items logged by
27 * the transaction so we know how many to expect during recovery.
28 *
29 * Do not change the below structure without redoing the code in
30 * xlog_recover_add_to_trans() and xlog_recover_add_to_cont_trans().
31 */
32typedef struct xfs_trans_header {
33 uint th_magic; /* magic number */
34 uint th_type; /* transaction type */
35 __int32_t th_tid; /* transaction id (unused) */
36 uint th_num_items; /* num items logged by trans */
37} xfs_trans_header_t;
38
39#define XFS_TRANS_HEADER_MAGIC 0x5452414e /* TRAN */
40
41/*
42 * Log item types.
43 */
44#define XFS_LI_EFI 0x1236
45#define XFS_LI_EFD 0x1237
46#define XFS_LI_IUNLINK 0x1238
47#define XFS_LI_INODE 0x123b /* aligned ino chunks, var-size ibufs */
48#define XFS_LI_BUF 0x123c /* v2 bufs, variable sized inode bufs */
49#define XFS_LI_DQUOT 0x123d
50#define XFS_LI_QUOTAOFF 0x123e
51
52#define XFS_LI_TYPE_DESC \
53 { XFS_LI_EFI, "XFS_LI_EFI" }, \
54 { XFS_LI_EFD, "XFS_LI_EFD" }, \
55 { XFS_LI_IUNLINK, "XFS_LI_IUNLINK" }, \
56 { XFS_LI_INODE, "XFS_LI_INODE" }, \
57 { XFS_LI_BUF, "XFS_LI_BUF" }, \
58 { XFS_LI_DQUOT, "XFS_LI_DQUOT" }, \
59 { XFS_LI_QUOTAOFF, "XFS_LI_QUOTAOFF" }
60
61/*
62 * Transaction types. Used to distinguish types of buffers.
63 */
64#define XFS_TRANS_SETATTR_NOT_SIZE 1
65#define XFS_TRANS_SETATTR_SIZE 2
66#define XFS_TRANS_INACTIVE 3
67#define XFS_TRANS_CREATE 4
68#define XFS_TRANS_CREATE_TRUNC 5
69#define XFS_TRANS_TRUNCATE_FILE 6
70#define XFS_TRANS_REMOVE 7
71#define XFS_TRANS_LINK 8
72#define XFS_TRANS_RENAME 9
73#define XFS_TRANS_MKDIR 10
74#define XFS_TRANS_RMDIR 11
75#define XFS_TRANS_SYMLINK 12
76#define XFS_TRANS_SET_DMATTRS 13
77#define XFS_TRANS_GROWFS 14
78#define XFS_TRANS_STRAT_WRITE 15
79#define XFS_TRANS_DIOSTRAT 16
80/* 17 was XFS_TRANS_WRITE_SYNC */
81#define XFS_TRANS_WRITEID 18
82#define XFS_TRANS_ADDAFORK 19
83#define XFS_TRANS_ATTRINVAL 20
84#define XFS_TRANS_ATRUNCATE 21
85#define XFS_TRANS_ATTR_SET 22
86#define XFS_TRANS_ATTR_RM 23
87#define XFS_TRANS_ATTR_FLAG 24
88#define XFS_TRANS_CLEAR_AGI_BUCKET 25
89#define XFS_TRANS_QM_SBCHANGE 26
90/*
91 * Dummy entries since we use the transaction type to index into the
92 * trans_type[] in xlog_recover_print_trans_head()
93 */
94#define XFS_TRANS_DUMMY1 27
95#define XFS_TRANS_DUMMY2 28
96#define XFS_TRANS_QM_QUOTAOFF 29
97#define XFS_TRANS_QM_DQALLOC 30
98#define XFS_TRANS_QM_SETQLIM 31
99#define XFS_TRANS_QM_DQCLUSTER 32
100#define XFS_TRANS_QM_QINOCREATE 33
101#define XFS_TRANS_QM_QUOTAOFF_END 34
102#define XFS_TRANS_SB_UNIT 35
103#define XFS_TRANS_FSYNC_TS 36
104#define XFS_TRANS_GROWFSRT_ALLOC 37
105#define XFS_TRANS_GROWFSRT_ZERO 38
106#define XFS_TRANS_GROWFSRT_FREE 39
107#define XFS_TRANS_SWAPEXT 40
108#define XFS_TRANS_SB_COUNT 41
109#define XFS_TRANS_CHECKPOINT 42
110#define XFS_TRANS_TYPE_MAX 42
111/* new transaction types need to be reflected in xfs_logprint(8) */
112
113#define XFS_TRANS_TYPES \
114 { XFS_TRANS_SETATTR_NOT_SIZE, "SETATTR_NOT_SIZE" }, \
115 { XFS_TRANS_SETATTR_SIZE, "SETATTR_SIZE" }, \
116 { XFS_TRANS_INACTIVE, "INACTIVE" }, \
117 { XFS_TRANS_CREATE, "CREATE" }, \
118 { XFS_TRANS_CREATE_TRUNC, "CREATE_TRUNC" }, \
119 { XFS_TRANS_TRUNCATE_FILE, "TRUNCATE_FILE" }, \
120 { XFS_TRANS_REMOVE, "REMOVE" }, \
121 { XFS_TRANS_LINK, "LINK" }, \
122 { XFS_TRANS_RENAME, "RENAME" }, \
123 { XFS_TRANS_MKDIR, "MKDIR" }, \
124 { XFS_TRANS_RMDIR, "RMDIR" }, \
125 { XFS_TRANS_SYMLINK, "SYMLINK" }, \
126 { XFS_TRANS_SET_DMATTRS, "SET_DMATTRS" }, \
127 { XFS_TRANS_GROWFS, "GROWFS" }, \
128 { XFS_TRANS_STRAT_WRITE, "STRAT_WRITE" }, \
129 { XFS_TRANS_DIOSTRAT, "DIOSTRAT" }, \
130 { XFS_TRANS_WRITEID, "WRITEID" }, \
131 { XFS_TRANS_ADDAFORK, "ADDAFORK" }, \
132 { XFS_TRANS_ATTRINVAL, "ATTRINVAL" }, \
133 { XFS_TRANS_ATRUNCATE, "ATRUNCATE" }, \
134 { XFS_TRANS_ATTR_SET, "ATTR_SET" }, \
135 { XFS_TRANS_ATTR_RM, "ATTR_RM" }, \
136 { XFS_TRANS_ATTR_FLAG, "ATTR_FLAG" }, \
137 { XFS_TRANS_CLEAR_AGI_BUCKET, "CLEAR_AGI_BUCKET" }, \
138 { XFS_TRANS_QM_SBCHANGE, "QM_SBCHANGE" }, \
139 { XFS_TRANS_QM_QUOTAOFF, "QM_QUOTAOFF" }, \
140 { XFS_TRANS_QM_DQALLOC, "QM_DQALLOC" }, \
141 { XFS_TRANS_QM_SETQLIM, "QM_SETQLIM" }, \
142 { XFS_TRANS_QM_DQCLUSTER, "QM_DQCLUSTER" }, \
143 { XFS_TRANS_QM_QINOCREATE, "QM_QINOCREATE" }, \
144 { XFS_TRANS_QM_QUOTAOFF_END, "QM_QOFF_END" }, \
145 { XFS_TRANS_SB_UNIT, "SB_UNIT" }, \
146 { XFS_TRANS_FSYNC_TS, "FSYNC_TS" }, \
147 { XFS_TRANS_GROWFSRT_ALLOC, "GROWFSRT_ALLOC" }, \
148 { XFS_TRANS_GROWFSRT_ZERO, "GROWFSRT_ZERO" }, \
149 { XFS_TRANS_GROWFSRT_FREE, "GROWFSRT_FREE" }, \
150 { XFS_TRANS_SWAPEXT, "SWAPEXT" }, \
151 { XFS_TRANS_SB_COUNT, "SB_COUNT" }, \
152 { XFS_TRANS_CHECKPOINT, "CHECKPOINT" }, \
153 { XFS_TRANS_DUMMY1, "DUMMY1" }, \
154 { XFS_TRANS_DUMMY2, "DUMMY2" }, \
155 { XLOG_UNMOUNT_REC_TYPE, "UNMOUNT" }
156
157/*
158 * This structure is used to track log items associated with
159 * a transaction. It points to the log item and keeps some
160 * flags to track the state of the log item. It also tracks
161 * the amount of space needed to log the item it describes
162 * once we get to commit processing (see xfs_trans_commit()).
163 */
164struct xfs_log_item_desc {
165 struct xfs_log_item *lid_item;
166 struct list_head lid_trans;
167 unsigned char lid_flags;
168};
169
170#define XFS_LID_DIRTY 0x1
171
172#define XFS_TRANS_MAGIC 0x5452414E /* 'TRAN' */
173/*
174 * Values for t_flags.
175 */
176#define XFS_TRANS_DIRTY 0x01 /* something needs to be logged */
177#define XFS_TRANS_SB_DIRTY 0x02 /* superblock is modified */
178#define XFS_TRANS_PERM_LOG_RES 0x04 /* xact took a permanent log res */
179#define XFS_TRANS_SYNC 0x08 /* make commit synchronous */
180#define XFS_TRANS_DQ_DIRTY 0x10 /* at least one dquot in trx dirty */
181#define XFS_TRANS_RESERVE 0x20 /* OK to use reserved data blocks */
182
183/*
184 * Values for call flags parameter.
185 */
186#define XFS_TRANS_RELEASE_LOG_RES 0x4
187#define XFS_TRANS_ABORT 0x8
188
189/*
190 * Field values for xfs_trans_mod_sb.
191 */
192#define XFS_TRANS_SB_ICOUNT 0x00000001
193#define XFS_TRANS_SB_IFREE 0x00000002
194#define XFS_TRANS_SB_FDBLOCKS 0x00000004
195#define XFS_TRANS_SB_RES_FDBLOCKS 0x00000008
196#define XFS_TRANS_SB_FREXTENTS 0x00000010
197#define XFS_TRANS_SB_RES_FREXTENTS 0x00000020
198#define XFS_TRANS_SB_DBLOCKS 0x00000040
199#define XFS_TRANS_SB_AGCOUNT 0x00000080
200#define XFS_TRANS_SB_IMAXPCT 0x00000100
201#define XFS_TRANS_SB_REXTSIZE 0x00000200
202#define XFS_TRANS_SB_RBMBLOCKS 0x00000400
203#define XFS_TRANS_SB_RBLOCKS 0x00000800
204#define XFS_TRANS_SB_REXTENTS 0x00001000
205#define XFS_TRANS_SB_REXTSLOG 0x00002000
206
207
208/*
209 * Per-extent log reservation for the allocation btree changes
210 * involved in freeing or allocating an extent.
211 * 2 trees * (2 blocks/level * max depth - 1) * block size
212 */
213#define XFS_ALLOCFREE_LOG_RES(mp,nx) \
214 ((nx) * (2 * XFS_FSB_TO_B((mp), 2 * XFS_AG_MAXLEVELS(mp) - 1)))
215#define XFS_ALLOCFREE_LOG_COUNT(mp,nx) \
216 ((nx) * (2 * (2 * XFS_AG_MAXLEVELS(mp) - 1)))
217
218/*
219 * Per-directory log reservation for any directory change.
220 * dir blocks: (1 btree block per level + data block + free block) * dblock size
221 * bmap btree: (levels + 2) * max depth * block size
222 * v2 directory blocks can be fragmented below the dirblksize down to the fsb
223 * size, so account for that in the DAENTER macros.
224 */
225#define XFS_DIROP_LOG_RES(mp) \
226 (XFS_FSB_TO_B(mp, XFS_DAENTER_BLOCKS(mp, XFS_DATA_FORK)) + \
227 (XFS_FSB_TO_B(mp, XFS_DAENTER_BMAPS(mp, XFS_DATA_FORK) + 1)))
228#define XFS_DIROP_LOG_COUNT(mp) \
229 (XFS_DAENTER_BLOCKS(mp, XFS_DATA_FORK) + \
230 XFS_DAENTER_BMAPS(mp, XFS_DATA_FORK) + 1)
231
232
233#define XFS_WRITE_LOG_RES(mp) ((mp)->m_reservations.tr_write)
234#define XFS_ITRUNCATE_LOG_RES(mp) ((mp)->m_reservations.tr_itruncate)
235#define XFS_RENAME_LOG_RES(mp) ((mp)->m_reservations.tr_rename)
236#define XFS_LINK_LOG_RES(mp) ((mp)->m_reservations.tr_link)
237#define XFS_REMOVE_LOG_RES(mp) ((mp)->m_reservations.tr_remove)
238#define XFS_SYMLINK_LOG_RES(mp) ((mp)->m_reservations.tr_symlink)
239#define XFS_CREATE_LOG_RES(mp) ((mp)->m_reservations.tr_create)
240#define XFS_MKDIR_LOG_RES(mp) ((mp)->m_reservations.tr_mkdir)
241#define XFS_IFREE_LOG_RES(mp) ((mp)->m_reservations.tr_ifree)
242#define XFS_ICHANGE_LOG_RES(mp) ((mp)->m_reservations.tr_ichange)
243#define XFS_GROWDATA_LOG_RES(mp) ((mp)->m_reservations.tr_growdata)
244#define XFS_GROWRTALLOC_LOG_RES(mp) ((mp)->m_reservations.tr_growrtalloc)
245#define XFS_GROWRTZERO_LOG_RES(mp) ((mp)->m_reservations.tr_growrtzero)
246#define XFS_GROWRTFREE_LOG_RES(mp) ((mp)->m_reservations.tr_growrtfree)
247#define XFS_SWRITE_LOG_RES(mp) ((mp)->m_reservations.tr_swrite)
248/*
249 * Logging the inode timestamps on an fsync -- same as SWRITE
250 * as long as SWRITE logs the entire inode core
251 */
252#define XFS_FSYNC_TS_LOG_RES(mp) ((mp)->m_reservations.tr_swrite)
253#define XFS_WRITEID_LOG_RES(mp) ((mp)->m_reservations.tr_swrite)
254#define XFS_ADDAFORK_LOG_RES(mp) ((mp)->m_reservations.tr_addafork)
255#define XFS_ATTRINVAL_LOG_RES(mp) ((mp)->m_reservations.tr_attrinval)
256#define XFS_ATTRSET_LOG_RES(mp, ext) \
257 ((mp)->m_reservations.tr_attrset + \
258 (ext * (mp)->m_sb.sb_sectsize) + \
259 (ext * XFS_FSB_TO_B((mp), XFS_BM_MAXLEVELS(mp, XFS_ATTR_FORK))) + \
260 (128 * (ext + (ext * XFS_BM_MAXLEVELS(mp, XFS_ATTR_FORK)))))
261#define XFS_ATTRRM_LOG_RES(mp) ((mp)->m_reservations.tr_attrrm)
262#define XFS_CLEAR_AGI_BUCKET_LOG_RES(mp) ((mp)->m_reservations.tr_clearagi)
263
264
265/*
266 * Various log count values.
267 */
268#define XFS_DEFAULT_LOG_COUNT 1
269#define XFS_DEFAULT_PERM_LOG_COUNT 2
270#define XFS_ITRUNCATE_LOG_COUNT 2
271#define XFS_INACTIVE_LOG_COUNT 2
272#define XFS_CREATE_LOG_COUNT 2
273#define XFS_MKDIR_LOG_COUNT 3
274#define XFS_SYMLINK_LOG_COUNT 3
275#define XFS_REMOVE_LOG_COUNT 2
276#define XFS_LINK_LOG_COUNT 2
277#define XFS_RENAME_LOG_COUNT 2
278#define XFS_WRITE_LOG_COUNT 2
279#define XFS_ADDAFORK_LOG_COUNT 2
280#define XFS_ATTRINVAL_LOG_COUNT 1
281#define XFS_ATTRSET_LOG_COUNT 3
282#define XFS_ATTRRM_LOG_COUNT 3
283
284/*
285 * Here we centralize the specification of XFS meta-data buffer
286 * reference count values. This determine how hard the buffer
287 * cache tries to hold onto the buffer.
288 */
289#define XFS_AGF_REF 4
290#define XFS_AGI_REF 4
291#define XFS_AGFL_REF 3
292#define XFS_INO_BTREE_REF 3
293#define XFS_ALLOC_BTREE_REF 2
294#define XFS_BMAP_BTREE_REF 2
295#define XFS_DIR_BTREE_REF 2
296#define XFS_INO_REF 2
297#define XFS_ATTR_BTREE_REF 1
298#define XFS_DQUOT_REF 1
299
300#ifdef __KERNEL__
301
302struct xfs_buf;
303struct xfs_buftarg;
304struct xfs_efd_log_item;
305struct xfs_efi_log_item;
306struct xfs_inode;
307struct xfs_item_ops;
308struct xfs_log_iovec;
309struct xfs_log_item_desc;
310struct xfs_mount;
311struct xfs_trans;
312struct xfs_dquot_acct;
313struct xfs_busy_extent;
314
315typedef struct xfs_log_item {
316 struct list_head li_ail; /* AIL pointers */
317 xfs_lsn_t li_lsn; /* last on-disk lsn */
318 struct xfs_log_item_desc *li_desc; /* ptr to current desc*/
319 struct xfs_mount *li_mountp; /* ptr to fs mount */
320 struct xfs_ail *li_ailp; /* ptr to AIL */
321 uint li_type; /* item type */
322 uint li_flags; /* misc flags */
323 struct xfs_log_item *li_bio_list; /* buffer item list */
324 void (*li_cb)(struct xfs_buf *,
325 struct xfs_log_item *);
326 /* buffer item iodone */
327 /* callback func */
328 const struct xfs_item_ops *li_ops; /* function list */
329
330 /* delayed logging */
331 struct list_head li_cil; /* CIL pointers */
332 struct xfs_log_vec *li_lv; /* active log vector */
333 xfs_lsn_t li_seq; /* CIL commit seq */
334} xfs_log_item_t;
335
336#define XFS_LI_IN_AIL 0x1
337#define XFS_LI_ABORTED 0x2
338
339#define XFS_LI_FLAGS \
340 { XFS_LI_IN_AIL, "IN_AIL" }, \
341 { XFS_LI_ABORTED, "ABORTED" }
342
343struct xfs_item_ops {
344 uint (*iop_size)(xfs_log_item_t *);
345 void (*iop_format)(xfs_log_item_t *, struct xfs_log_iovec *);
346 void (*iop_pin)(xfs_log_item_t *);
347 void (*iop_unpin)(xfs_log_item_t *, int remove);
348 uint (*iop_push)(struct xfs_log_item *, struct list_head *);
349 void (*iop_unlock)(xfs_log_item_t *);
350 xfs_lsn_t (*iop_committed)(xfs_log_item_t *, xfs_lsn_t);
351 void (*iop_committing)(xfs_log_item_t *, xfs_lsn_t);
352};
353
354#define IOP_SIZE(ip) (*(ip)->li_ops->iop_size)(ip)
355#define IOP_FORMAT(ip,vp) (*(ip)->li_ops->iop_format)(ip, vp)
356#define IOP_PIN(ip) (*(ip)->li_ops->iop_pin)(ip)
357#define IOP_UNPIN(ip, remove) (*(ip)->li_ops->iop_unpin)(ip, remove)
358#define IOP_PUSH(ip, list) (*(ip)->li_ops->iop_push)(ip, list)
359#define IOP_UNLOCK(ip) (*(ip)->li_ops->iop_unlock)(ip)
360#define IOP_COMMITTED(ip, lsn) (*(ip)->li_ops->iop_committed)(ip, lsn)
361#define IOP_COMMITTING(ip, lsn) (*(ip)->li_ops->iop_committing)(ip, lsn)
362
363/*
364 * Return values for the IOP_PUSH() routines.
365 */
366#define XFS_ITEM_SUCCESS 0
367#define XFS_ITEM_PINNED 1
368#define XFS_ITEM_LOCKED 2
369#define XFS_ITEM_FLUSHING 3
370
371/*
372 * This is the type of function which can be given to xfs_trans_callback()
373 * to be called upon the transaction's commit to disk.
374 */
375typedef void (*xfs_trans_callback_t)(struct xfs_trans *, void *);
376
377/*
378 * This is the structure maintained for every active transaction.
379 */
380typedef struct xfs_trans {
381 unsigned int t_magic; /* magic number */
382 xfs_log_callback_t t_logcb; /* log callback struct */
383 unsigned int t_type; /* transaction type */
384 unsigned int t_log_res; /* amt of log space resvd */
385 unsigned int t_log_count; /* count for perm log res */
386 unsigned int t_blk_res; /* # of blocks resvd */
387 unsigned int t_blk_res_used; /* # of resvd blocks used */
388 unsigned int t_rtx_res; /* # of rt extents resvd */
389 unsigned int t_rtx_res_used; /* # of resvd rt extents used */
390 struct xlog_ticket *t_ticket; /* log mgr ticket */
391 xfs_lsn_t t_lsn; /* log seq num of start of
392 * transaction. */
393 xfs_lsn_t t_commit_lsn; /* log seq num of end of
394 * transaction. */
395 struct xfs_mount *t_mountp; /* ptr to fs mount struct */
396 struct xfs_dquot_acct *t_dqinfo; /* acctg info for dquots */
397 unsigned int t_flags; /* misc flags */
398 int64_t t_icount_delta; /* superblock icount change */
399 int64_t t_ifree_delta; /* superblock ifree change */
400 int64_t t_fdblocks_delta; /* superblock fdblocks chg */
401 int64_t t_res_fdblocks_delta; /* on-disk only chg */
402 int64_t t_frextents_delta;/* superblock freextents chg*/
403 int64_t t_res_frextents_delta; /* on-disk only chg */
404#ifdef DEBUG
405 int64_t t_ag_freeblks_delta; /* debugging counter */
406 int64_t t_ag_flist_delta; /* debugging counter */
407 int64_t t_ag_btree_delta; /* debugging counter */
408#endif
409 int64_t t_dblocks_delta;/* superblock dblocks change */
410 int64_t t_agcount_delta;/* superblock agcount change */
411 int64_t t_imaxpct_delta;/* superblock imaxpct change */
412 int64_t t_rextsize_delta;/* superblock rextsize chg */
413 int64_t t_rbmblocks_delta;/* superblock rbmblocks chg */
414 int64_t t_rblocks_delta;/* superblock rblocks change */
415 int64_t t_rextents_delta;/* superblocks rextents chg */
416 int64_t t_rextslog_delta;/* superblocks rextslog chg */
417 struct list_head t_items; /* log item descriptors */
418 xfs_trans_header_t t_header; /* header for in-log trans */
419 struct list_head t_busy; /* list of busy extents */
420 unsigned long t_pflags; /* saved process flags state */
421} xfs_trans_t;
422
423/*
424 * XFS transaction mechanism exported interfaces that are
425 * actually macros.
426 */
427#define xfs_trans_get_log_res(tp) ((tp)->t_log_res)
428#define xfs_trans_get_log_count(tp) ((tp)->t_log_count)
429#define xfs_trans_get_block_res(tp) ((tp)->t_blk_res)
430#define xfs_trans_set_sync(tp) ((tp)->t_flags |= XFS_TRANS_SYNC)
431
432#ifdef DEBUG
433#define xfs_trans_agblocks_delta(tp, d) ((tp)->t_ag_freeblks_delta += (int64_t)d)
434#define xfs_trans_agflist_delta(tp, d) ((tp)->t_ag_flist_delta += (int64_t)d)
435#define xfs_trans_agbtree_delta(tp, d) ((tp)->t_ag_btree_delta += (int64_t)d)
436#else
437#define xfs_trans_agblocks_delta(tp, d)
438#define xfs_trans_agflist_delta(tp, d)
439#define xfs_trans_agbtree_delta(tp, d)
440#endif
441
442/*
443 * XFS transaction mechanism exported interfaces.
444 */
445xfs_trans_t *xfs_trans_alloc(struct xfs_mount *, uint);
446xfs_trans_t *_xfs_trans_alloc(struct xfs_mount *, uint, xfs_km_flags_t);
447xfs_trans_t *xfs_trans_dup(xfs_trans_t *);
448int xfs_trans_reserve(xfs_trans_t *, uint, uint, uint,
449 uint, uint);
450void xfs_trans_mod_sb(xfs_trans_t *, uint, int64_t);
451struct xfs_buf *xfs_trans_get_buf(xfs_trans_t *, struct xfs_buftarg *, xfs_daddr_t,
452 int, uint);
453int xfs_trans_read_buf(struct xfs_mount *, xfs_trans_t *,
454 struct xfs_buftarg *, xfs_daddr_t, int, uint,
455 struct xfs_buf **);
456struct xfs_buf *xfs_trans_getsb(xfs_trans_t *, struct xfs_mount *, int);
457
458void xfs_trans_brelse(xfs_trans_t *, struct xfs_buf *);
459void xfs_trans_bjoin(xfs_trans_t *, struct xfs_buf *);
460void xfs_trans_bhold(xfs_trans_t *, struct xfs_buf *);
461void xfs_trans_bhold_release(xfs_trans_t *, struct xfs_buf *);
462void xfs_trans_binval(xfs_trans_t *, struct xfs_buf *);
463void xfs_trans_inode_buf(xfs_trans_t *, struct xfs_buf *);
464void xfs_trans_stale_inode_buf(xfs_trans_t *, struct xfs_buf *);
465void xfs_trans_dquot_buf(xfs_trans_t *, struct xfs_buf *, uint);
466void xfs_trans_inode_alloc_buf(xfs_trans_t *, struct xfs_buf *);
467void xfs_trans_ichgtime(struct xfs_trans *, struct xfs_inode *, int);
468void xfs_trans_ijoin(struct xfs_trans *, struct xfs_inode *, uint);
469void xfs_trans_log_buf(xfs_trans_t *, struct xfs_buf *, uint, uint);
470void xfs_trans_log_inode(xfs_trans_t *, struct xfs_inode *, uint);
471struct xfs_efi_log_item *xfs_trans_get_efi(xfs_trans_t *, uint);
472void xfs_efi_release(struct xfs_efi_log_item *, uint);
473void xfs_trans_log_efi_extent(xfs_trans_t *,
474 struct xfs_efi_log_item *,
475 xfs_fsblock_t,
476 xfs_extlen_t);
477struct xfs_efd_log_item *xfs_trans_get_efd(xfs_trans_t *,
478 struct xfs_efi_log_item *,
479 uint);
480void xfs_trans_log_efd_extent(xfs_trans_t *,
481 struct xfs_efd_log_item *,
482 xfs_fsblock_t,
483 xfs_extlen_t);
484int xfs_trans_commit(xfs_trans_t *, uint flags);
485void xfs_trans_cancel(xfs_trans_t *, int);
486int xfs_trans_ail_init(struct xfs_mount *);
487void xfs_trans_ail_destroy(struct xfs_mount *);
488
489extern kmem_zone_t *xfs_trans_zone;
490extern kmem_zone_t *xfs_log_item_desc_zone;
491
492#endif /* __KERNEL__ */
493
494void xfs_trans_init(struct xfs_mount *);
495int xfs_trans_roll(struct xfs_trans **, struct xfs_inode *);
496
497#endif /* __XFS_TRANS_H__ */