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Linus Torvalds1da177e2005-04-16 15:20:36 -07001/*
Nathan Scott7b718762005-11-02 14:58:39 +11002 * Copyright (c) 2000-2002,2005 Silicon Graphics, Inc.
3 * All Rights Reserved.
Linus Torvalds1da177e2005-04-16 15:20:36 -07004 *
Nathan Scott7b718762005-11-02 14:58:39 +11005 * This program is free software; you can redistribute it and/or
6 * modify it under the terms of the GNU General Public License as
Linus Torvalds1da177e2005-04-16 15:20:36 -07007 * published by the Free Software Foundation.
8 *
Nathan Scott7b718762005-11-02 14:58:39 +11009 * 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.
Linus Torvalds1da177e2005-04-16 15:20:36 -070013 *
Nathan Scott7b718762005-11-02 14:58:39 +110014 * 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
Linus Torvalds1da177e2005-04-16 15:20:36 -070017 */
18#ifndef __XFS_TRANS_H__
19#define __XFS_TRANS_H__
20
Dave Chinner7fd36c42013-08-12 20:49:32 +100021/* kernel only transaction subsystem defines */
Barry Naujok847fff52008-10-30 17:05:38 +110022
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;
Jie Liu3d3c8b52013-08-12 20:49:59 +100033struct xfs_trans_res;
Barry Naujok847fff52008-10-30 17:05:38 +110034struct xfs_dquot_acct;
Dave Chinnered3b4d62010-05-21 12:07:08 +100035struct xfs_busy_extent;
Barry Naujok847fff52008-10-30 17:05:38 +110036
37typedef struct xfs_log_item {
38 struct list_head li_ail; /* AIL pointers */
39 xfs_lsn_t li_lsn; /* last on-disk lsn */
40 struct xfs_log_item_desc *li_desc; /* ptr to current desc*/
41 struct xfs_mount *li_mountp; /* ptr to fs mount */
David Chinnerfc1829f2008-10-30 17:39:46 +110042 struct xfs_ail *li_ailp; /* ptr to AIL */
Barry Naujok847fff52008-10-30 17:05:38 +110043 uint li_type; /* item type */
44 uint li_flags; /* misc flags */
45 struct xfs_log_item *li_bio_list; /* buffer item list */
46 void (*li_cb)(struct xfs_buf *,
47 struct xfs_log_item *);
48 /* buffer item iodone */
49 /* callback func */
Christoph Hellwig272e42b2011-10-28 09:54:24 +000050 const struct xfs_item_ops *li_ops; /* function list */
Dave Chinner71e330b2010-05-21 14:37:18 +100051
52 /* delayed logging */
53 struct list_head li_cil; /* CIL pointers */
54 struct xfs_log_vec *li_lv; /* active log vector */
Dave Chinnerccf7c232010-05-20 23:19:42 +100055 xfs_lsn_t li_seq; /* CIL commit seq */
Barry Naujok847fff52008-10-30 17:05:38 +110056} xfs_log_item_t;
57
58#define XFS_LI_IN_AIL 0x1
59#define XFS_LI_ABORTED 0x2
60
Christoph Hellwig0b1b2132009-12-14 23:14:59 +000061#define XFS_LI_FLAGS \
62 { XFS_LI_IN_AIL, "IN_AIL" }, \
63 { XFS_LI_ABORTED, "ABORTED" }
64
Christoph Hellwig272e42b2011-10-28 09:54:24 +000065struct xfs_item_ops {
Dave Chinner166d1362013-08-12 20:50:04 +100066 void (*iop_size)(xfs_log_item_t *, int *, int *);
Christoph Hellwigbde7cff2013-12-13 11:34:02 +110067 void (*iop_format)(xfs_log_item_t *, struct xfs_log_vec *);
Barry Naujok847fff52008-10-30 17:05:38 +110068 void (*iop_pin)(xfs_log_item_t *);
Christoph Hellwig9412e312010-06-23 18:11:15 +100069 void (*iop_unpin)(xfs_log_item_t *, int remove);
Christoph Hellwig43ff2122012-04-23 15:58:39 +100070 uint (*iop_push)(struct xfs_log_item *, struct list_head *);
Barry Naujok847fff52008-10-30 17:05:38 +110071 void (*iop_unlock)(xfs_log_item_t *);
72 xfs_lsn_t (*iop_committed)(xfs_log_item_t *, xfs_lsn_t);
Barry Naujok847fff52008-10-30 17:05:38 +110073 void (*iop_committing)(xfs_log_item_t *, xfs_lsn_t);
Christoph Hellwig272e42b2011-10-28 09:54:24 +000074};
Barry Naujok847fff52008-10-30 17:05:38 +110075
Dave Chinner239880e2013-10-23 10:50:10 +110076void xfs_log_item_init(struct xfs_mount *mp, struct xfs_log_item *item,
77 int type, const struct xfs_item_ops *ops);
78
Barry Naujok847fff52008-10-30 17:05:38 +110079/*
Dave Chinner904c17e2013-08-28 21:12:03 +100080 * Return values for the iop_push() routines.
Barry Naujok847fff52008-10-30 17:05:38 +110081 */
Christoph Hellwig43ff2122012-04-23 15:58:39 +100082#define XFS_ITEM_SUCCESS 0
83#define XFS_ITEM_PINNED 1
84#define XFS_ITEM_LOCKED 2
85#define XFS_ITEM_FLUSHING 3
Barry Naujok847fff52008-10-30 17:05:38 +110086
Dave Chinner239880e2013-10-23 10:50:10 +110087
Barry Naujok847fff52008-10-30 17:05:38 +110088/*
Barry Naujok847fff52008-10-30 17:05:38 +110089 * This is the structure maintained for every active transaction.
90 */
91typedef struct xfs_trans {
92 unsigned int t_magic; /* magic number */
Barry Naujok847fff52008-10-30 17:05:38 +110093 unsigned int t_type; /* transaction type */
94 unsigned int t_log_res; /* amt of log space resvd */
95 unsigned int t_log_count; /* count for perm log res */
96 unsigned int t_blk_res; /* # of blocks resvd */
97 unsigned int t_blk_res_used; /* # of resvd blocks used */
98 unsigned int t_rtx_res; /* # of rt extents resvd */
99 unsigned int t_rtx_res_used; /* # of resvd rt extents used */
Christoph Hellwig35a8a722010-02-15 23:34:54 +0000100 struct xlog_ticket *t_ticket; /* log mgr ticket */
Barry Naujok847fff52008-10-30 17:05:38 +1100101 xfs_lsn_t t_lsn; /* log seq num of start of
102 * transaction. */
103 xfs_lsn_t t_commit_lsn; /* log seq num of end of
104 * transaction. */
105 struct xfs_mount *t_mountp; /* ptr to fs mount struct */
106 struct xfs_dquot_acct *t_dqinfo; /* acctg info for dquots */
Barry Naujok847fff52008-10-30 17:05:38 +1100107 unsigned int t_flags; /* misc flags */
108 int64_t t_icount_delta; /* superblock icount change */
109 int64_t t_ifree_delta; /* superblock ifree change */
110 int64_t t_fdblocks_delta; /* superblock fdblocks chg */
111 int64_t t_res_fdblocks_delta; /* on-disk only chg */
112 int64_t t_frextents_delta;/* superblock freextents chg*/
113 int64_t t_res_frextents_delta; /* on-disk only chg */
Dave Chinner742ae1e2013-04-30 21:39:34 +1000114#if defined(DEBUG) || defined(XFS_WARN)
Barry Naujok847fff52008-10-30 17:05:38 +1100115 int64_t t_ag_freeblks_delta; /* debugging counter */
116 int64_t t_ag_flist_delta; /* debugging counter */
117 int64_t t_ag_btree_delta; /* debugging counter */
118#endif
119 int64_t t_dblocks_delta;/* superblock dblocks change */
120 int64_t t_agcount_delta;/* superblock agcount change */
121 int64_t t_imaxpct_delta;/* superblock imaxpct change */
122 int64_t t_rextsize_delta;/* superblock rextsize chg */
123 int64_t t_rbmblocks_delta;/* superblock rbmblocks chg */
124 int64_t t_rblocks_delta;/* superblock rblocks change */
125 int64_t t_rextents_delta;/* superblocks rextents chg */
126 int64_t t_rextslog_delta;/* superblocks rextslog chg */
Christoph Hellwige98c4142010-06-23 18:11:15 +1000127 struct list_head t_items; /* log item descriptors */
Dave Chinnered3b4d62010-05-21 12:07:08 +1000128 struct list_head t_busy; /* list of busy extents */
Barry Naujok847fff52008-10-30 17:05:38 +1100129 unsigned long t_pflags; /* saved process flags state */
130} xfs_trans_t;
131
Linus Torvalds1da177e2005-04-16 15:20:36 -0700132/*
133 * XFS transaction mechanism exported interfaces that are
134 * actually macros.
135 */
136#define xfs_trans_get_log_res(tp) ((tp)->t_log_res)
137#define xfs_trans_get_log_count(tp) ((tp)->t_log_count)
138#define xfs_trans_get_block_res(tp) ((tp)->t_blk_res)
139#define xfs_trans_set_sync(tp) ((tp)->t_flags |= XFS_TRANS_SYNC)
140
Dave Chinner742ae1e2013-04-30 21:39:34 +1000141#if defined(DEBUG) || defined(XFS_WARN)
David Chinner20f4ebf2007-02-10 18:36:10 +1100142#define xfs_trans_agblocks_delta(tp, d) ((tp)->t_ag_freeblks_delta += (int64_t)d)
143#define xfs_trans_agflist_delta(tp, d) ((tp)->t_ag_flist_delta += (int64_t)d)
144#define xfs_trans_agbtree_delta(tp, d) ((tp)->t_ag_btree_delta += (int64_t)d)
Linus Torvalds1da177e2005-04-16 15:20:36 -0700145#else
146#define xfs_trans_agblocks_delta(tp, d)
147#define xfs_trans_agflist_delta(tp, d)
148#define xfs_trans_agbtree_delta(tp, d)
149#endif
150
151/*
152 * XFS transaction mechanism exported interfaces.
153 */
Linus Torvalds1da177e2005-04-16 15:20:36 -0700154xfs_trans_t *xfs_trans_alloc(struct xfs_mount *, uint);
Al Viro77ba7872012-04-02 06:24:04 -0400155xfs_trans_t *_xfs_trans_alloc(struct xfs_mount *, uint, xfs_km_flags_t);
Linus Torvalds1da177e2005-04-16 15:20:36 -0700156xfs_trans_t *xfs_trans_dup(xfs_trans_t *);
Jie Liu3d3c8b52013-08-12 20:49:59 +1000157int xfs_trans_reserve(struct xfs_trans *, struct xfs_trans_res *,
Linus Torvalds1da177e2005-04-16 15:20:36 -0700158 uint, uint);
David Chinner20f4ebf2007-02-10 18:36:10 +1100159void xfs_trans_mod_sb(xfs_trans_t *, uint, int64_t);
Dave Chinnerde2a4f52012-06-22 18:50:11 +1000160
161struct xfs_buf *xfs_trans_get_buf_map(struct xfs_trans *tp,
162 struct xfs_buftarg *target,
163 struct xfs_buf_map *map, int nmaps,
164 uint flags);
165
166static inline struct xfs_buf *
167xfs_trans_get_buf(
168 struct xfs_trans *tp,
169 struct xfs_buftarg *target,
170 xfs_daddr_t blkno,
171 int numblks,
172 uint flags)
173{
Dave Chinnerc3f8fc72012-11-12 22:54:01 +1100174 DEFINE_SINGLE_BUF_MAP(map, blkno, numblks);
Dave Chinnerde2a4f52012-06-22 18:50:11 +1000175 return xfs_trans_get_buf_map(tp, target, &map, 1, flags);
176}
177
178int xfs_trans_read_buf_map(struct xfs_mount *mp,
179 struct xfs_trans *tp,
180 struct xfs_buftarg *target,
181 struct xfs_buf_map *map, int nmaps,
182 xfs_buf_flags_t flags,
Dave Chinnerc3f8fc72012-11-12 22:54:01 +1100183 struct xfs_buf **bpp,
Dave Chinner1813dd62012-11-14 17:54:40 +1100184 const struct xfs_buf_ops *ops);
Dave Chinnerde2a4f52012-06-22 18:50:11 +1000185
186static inline int
187xfs_trans_read_buf(
188 struct xfs_mount *mp,
189 struct xfs_trans *tp,
190 struct xfs_buftarg *target,
191 xfs_daddr_t blkno,
192 int numblks,
193 xfs_buf_flags_t flags,
Dave Chinnerc3f8fc72012-11-12 22:54:01 +1100194 struct xfs_buf **bpp,
Dave Chinner1813dd62012-11-14 17:54:40 +1100195 const struct xfs_buf_ops *ops)
Dave Chinnerde2a4f52012-06-22 18:50:11 +1000196{
Dave Chinnerc3f8fc72012-11-12 22:54:01 +1100197 DEFINE_SINGLE_BUF_MAP(map, blkno, numblks);
198 return xfs_trans_read_buf_map(mp, tp, target, &map, 1,
Dave Chinner1813dd62012-11-14 17:54:40 +1100199 flags, bpp, ops);
Dave Chinnerde2a4f52012-06-22 18:50:11 +1000200}
201
Linus Torvalds1da177e2005-04-16 15:20:36 -0700202struct xfs_buf *xfs_trans_getsb(xfs_trans_t *, struct xfs_mount *, int);
203
204void xfs_trans_brelse(xfs_trans_t *, struct xfs_buf *);
205void xfs_trans_bjoin(xfs_trans_t *, struct xfs_buf *);
206void xfs_trans_bhold(xfs_trans_t *, struct xfs_buf *);
Tim Shimminefa092f2005-09-05 08:29:01 +1000207void xfs_trans_bhold_release(xfs_trans_t *, struct xfs_buf *);
Linus Torvalds1da177e2005-04-16 15:20:36 -0700208void xfs_trans_binval(xfs_trans_t *, struct xfs_buf *);
209void xfs_trans_inode_buf(xfs_trans_t *, struct xfs_buf *);
Linus Torvalds1da177e2005-04-16 15:20:36 -0700210void xfs_trans_stale_inode_buf(xfs_trans_t *, struct xfs_buf *);
Dave Chinner5f6bed72013-06-27 16:04:52 +1000211void xfs_trans_ordered_buf(xfs_trans_t *, struct xfs_buf *);
Linus Torvalds1da177e2005-04-16 15:20:36 -0700212void xfs_trans_dquot_buf(xfs_trans_t *, struct xfs_buf *, uint);
213void xfs_trans_inode_alloc_buf(xfs_trans_t *, struct xfs_buf *);
Dave Chinnerdcd79a12010-09-28 12:27:25 +1000214void xfs_trans_ichgtime(struct xfs_trans *, struct xfs_inode *, int);
Christoph Hellwigddc34152011-09-19 15:00:54 +0000215void xfs_trans_ijoin(struct xfs_trans *, struct xfs_inode *, uint);
Linus Torvalds1da177e2005-04-16 15:20:36 -0700216void xfs_trans_log_buf(xfs_trans_t *, struct xfs_buf *, uint, uint);
217void xfs_trans_log_inode(xfs_trans_t *, struct xfs_inode *, uint);
218struct xfs_efi_log_item *xfs_trans_get_efi(xfs_trans_t *, uint);
219void xfs_efi_release(struct xfs_efi_log_item *, uint);
220void xfs_trans_log_efi_extent(xfs_trans_t *,
221 struct xfs_efi_log_item *,
222 xfs_fsblock_t,
223 xfs_extlen_t);
224struct xfs_efd_log_item *xfs_trans_get_efd(xfs_trans_t *,
225 struct xfs_efi_log_item *,
226 uint);
227void xfs_trans_log_efd_extent(xfs_trans_t *,
228 struct xfs_efd_log_item *,
229 xfs_fsblock_t,
230 xfs_extlen_t);
Christoph Hellwigb1037052011-09-19 14:55:51 +0000231int xfs_trans_commit(xfs_trans_t *, uint flags);
Dave Chinner239880e2013-10-23 10:50:10 +1100232int xfs_trans_roll(struct xfs_trans **, struct xfs_inode *);
Linus Torvalds1da177e2005-04-16 15:20:36 -0700233void xfs_trans_cancel(xfs_trans_t *, int);
David Chinner249a8c12008-02-05 12:13:32 +1100234int xfs_trans_ail_init(struct xfs_mount *);
235void xfs_trans_ail_destroy(struct xfs_mount *);
Linus Torvalds1da177e2005-04-16 15:20:36 -0700236
Dave Chinnera4fbe6a2013-10-23 10:51:50 +1100237void xfs_trans_buf_set_type(struct xfs_trans *, struct xfs_buf *,
238 enum xfs_blft);
239void xfs_trans_buf_copy_type(struct xfs_buf *dst_bp,
240 struct xfs_buf *src_bp);
241
David Chinnera8272ce2007-11-23 16:28:09 +1100242extern kmem_zone_t *xfs_trans_zone;
Christoph Hellwige98c4142010-06-23 18:11:15 +1000243extern kmem_zone_t *xfs_log_item_desc_zone;
David Chinnera8272ce2007-11-23 16:28:09 +1100244
Linus Torvalds1da177e2005-04-16 15:20:36 -0700245#endif /* __XFS_TRANS_H__ */