Merge tag 'chrome-platform-for-linus-4.13' of git://git.kernel.org/pub/scm/linux...
[linux-2.6-block.git] / fs / xfs / xfs_trans.h
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1da177e4 1/*
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2 * Copyright (c) 2000-2002,2005 Silicon Graphics, Inc.
3 * All Rights Reserved.
1da177e4 4 *
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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
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7 * published by the Free Software Foundation.
8 *
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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.
1da177e4 13 *
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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
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17 */
18#ifndef __XFS_TRANS_H__
19#define __XFS_TRANS_H__
20
7fd36c44 21/* kernel only transaction subsystem defines */
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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;
3d3c8b52 33struct xfs_trans_res;
847fff5c 34struct xfs_dquot_acct;
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35struct xfs_rud_log_item;
36struct xfs_rui_log_item;
9c194644 37struct xfs_btree_cur;
f997ee21 38struct xfs_cui_log_item;
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39struct xfs_cud_log_item;
40struct xfs_defer_ops;
77d61fe4 41struct xfs_bui_log_item;
9f3afb57 42struct xfs_bud_log_item;
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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 */
fc1829f3 49 struct xfs_ail *li_ailp; /* ptr to AIL */
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50 uint li_type; /* item type */
51 uint li_flags; /* misc flags */
52 struct xfs_log_item *li_bio_list; /* buffer item list */
53 void (*li_cb)(struct xfs_buf *,
54 struct xfs_log_item *);
55 /* buffer item iodone */
56 /* callback func */
272e42b2 57 const struct xfs_item_ops *li_ops; /* function list */
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58
59 /* delayed logging */
60 struct list_head li_cil; /* CIL pointers */
61 struct xfs_log_vec *li_lv; /* active log vector */
b1c5ebb2 62 struct xfs_log_vec *li_lv_shadow; /* standby vector */
ccf7c23f 63 xfs_lsn_t li_seq; /* CIL commit seq */
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64} xfs_log_item_t;
65
66#define XFS_LI_IN_AIL 0x1
67#define XFS_LI_ABORTED 0x2
68
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69#define XFS_LI_FLAGS \
70 { XFS_LI_IN_AIL, "IN_AIL" }, \
71 { XFS_LI_ABORTED, "ABORTED" }
72
272e42b2 73struct xfs_item_ops {
166d1368 74 void (*iop_size)(xfs_log_item_t *, int *, int *);
bde7cff6 75 void (*iop_format)(xfs_log_item_t *, struct xfs_log_vec *);
847fff5c 76 void (*iop_pin)(xfs_log_item_t *);
9412e318 77 void (*iop_unpin)(xfs_log_item_t *, int remove);
43ff2122 78 uint (*iop_push)(struct xfs_log_item *, struct list_head *);
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79 void (*iop_unlock)(xfs_log_item_t *);
80 xfs_lsn_t (*iop_committed)(xfs_log_item_t *, xfs_lsn_t);
847fff5c 81 void (*iop_committing)(xfs_log_item_t *, xfs_lsn_t);
272e42b2 82};
847fff5c 83
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84void xfs_log_item_init(struct xfs_mount *mp, struct xfs_log_item *item,
85 int type, const struct xfs_item_ops *ops);
86
847fff5c 87/*
904c17e6 88 * Return values for the iop_push() routines.
847fff5c 89 */
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90#define XFS_ITEM_SUCCESS 0
91#define XFS_ITEM_PINNED 1
92#define XFS_ITEM_LOCKED 2
93#define XFS_ITEM_FLUSHING 3
847fff5c 94
239880ef 95
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96/*
97 * This is the structure maintained for every active transaction.
98 */
99typedef struct xfs_trans {
100 unsigned int t_magic; /* magic number */
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101 unsigned int t_log_res; /* amt of log space resvd */
102 unsigned int t_log_count; /* count for perm log res */
103 unsigned int t_blk_res; /* # of blocks resvd */
104 unsigned int t_blk_res_used; /* # of resvd blocks used */
105 unsigned int t_rtx_res; /* # of rt extents resvd */
106 unsigned int t_rtx_res_used; /* # of resvd rt extents used */
35a8a72f 107 struct xlog_ticket *t_ticket; /* log mgr ticket */
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108 struct xfs_mount *t_mountp; /* ptr to fs mount struct */
109 struct xfs_dquot_acct *t_dqinfo; /* acctg info for dquots */
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110 unsigned int t_flags; /* misc flags */
111 int64_t t_icount_delta; /* superblock icount change */
112 int64_t t_ifree_delta; /* superblock ifree change */
113 int64_t t_fdblocks_delta; /* superblock fdblocks chg */
114 int64_t t_res_fdblocks_delta; /* on-disk only chg */
115 int64_t t_frextents_delta;/* superblock freextents chg*/
116 int64_t t_res_frextents_delta; /* on-disk only chg */
742ae1e3 117#if defined(DEBUG) || defined(XFS_WARN)
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118 int64_t t_ag_freeblks_delta; /* debugging counter */
119 int64_t t_ag_flist_delta; /* debugging counter */
120 int64_t t_ag_btree_delta; /* debugging counter */
121#endif
122 int64_t t_dblocks_delta;/* superblock dblocks change */
123 int64_t t_agcount_delta;/* superblock agcount change */
124 int64_t t_imaxpct_delta;/* superblock imaxpct change */
125 int64_t t_rextsize_delta;/* superblock rextsize chg */
126 int64_t t_rbmblocks_delta;/* superblock rbmblocks chg */
127 int64_t t_rblocks_delta;/* superblock rblocks change */
128 int64_t t_rextents_delta;/* superblocks rextents chg */
129 int64_t t_rextslog_delta;/* superblocks rextslog chg */
e98c414f 130 struct list_head t_items; /* log item descriptors */
ed3b4d6c 131 struct list_head t_busy; /* list of busy extents */
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132 unsigned long t_pflags; /* saved process flags state */
133} xfs_trans_t;
134
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135/*
136 * XFS transaction mechanism exported interfaces that are
137 * actually macros.
138 */
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139#define xfs_trans_set_sync(tp) ((tp)->t_flags |= XFS_TRANS_SYNC)
140
742ae1e3 141#if defined(DEBUG) || defined(XFS_WARN)
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142#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)
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145#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 */
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154int xfs_trans_alloc(struct xfs_mount *mp, struct xfs_trans_res *resp,
155 uint blocks, uint rtextents, uint flags,
156 struct xfs_trans **tpp);
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157int xfs_trans_alloc_empty(struct xfs_mount *mp,
158 struct xfs_trans **tpp);
20f4ebf2 159void xfs_trans_mod_sb(xfs_trans_t *, uint, int64_t);
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160
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{
c3f8fc73 174 DEFINE_SINGLE_BUF_MAP(map, blkno, numblks);
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175 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,
c3f8fc73 183 struct xfs_buf **bpp,
1813dd64 184 const struct xfs_buf_ops *ops);
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185
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,
c3f8fc73 194 struct xfs_buf **bpp,
1813dd64 195 const struct xfs_buf_ops *ops)
de2a4f59 196{
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197 DEFINE_SINGLE_BUF_MAP(map, blkno, numblks);
198 return xfs_trans_read_buf_map(mp, tp, target, &map, 1,
1813dd64 199 flags, bpp, ops);
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200}
201
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202struct 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 *);
efa092f3 207void xfs_trans_bhold_release(xfs_trans_t *, struct xfs_buf *);
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208void xfs_trans_binval(xfs_trans_t *, struct xfs_buf *);
209void xfs_trans_inode_buf(xfs_trans_t *, struct xfs_buf *);
1da177e4 210void xfs_trans_stale_inode_buf(xfs_trans_t *, struct xfs_buf *);
5f6bed76 211void xfs_trans_ordered_buf(xfs_trans_t *, struct xfs_buf *);
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212void xfs_trans_dquot_buf(xfs_trans_t *, struct xfs_buf *, uint);
213void xfs_trans_inode_alloc_buf(xfs_trans_t *, struct xfs_buf *);
dcd79a14 214void xfs_trans_ichgtime(struct xfs_trans *, struct xfs_inode *, int);
ddc3415a 215void xfs_trans_ijoin(struct xfs_trans *, struct xfs_inode *, uint);
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216void xfs_trans_log_buf(xfs_trans_t *, struct xfs_buf *, uint, uint);
217void xfs_trans_log_inode(xfs_trans_t *, struct xfs_inode *, uint);
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218
219void xfs_extent_free_init_defer_op(void);
bba61cbf 220struct xfs_efd_log_item *xfs_trans_get_efd(struct xfs_trans *,
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221 struct xfs_efi_log_item *,
222 uint);
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223int xfs_trans_free_extent(struct xfs_trans *,
224 struct xfs_efd_log_item *, xfs_fsblock_t,
340785cc 225 xfs_extlen_t, struct xfs_owner_info *);
70393313 226int xfs_trans_commit(struct xfs_trans *);
239880ef 227int xfs_trans_roll(struct xfs_trans **, struct xfs_inode *);
4906e215 228void xfs_trans_cancel(xfs_trans_t *);
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229int xfs_trans_ail_init(struct xfs_mount *);
230void xfs_trans_ail_destroy(struct xfs_mount *);
1da177e4 231
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232void xfs_trans_buf_set_type(struct xfs_trans *, struct xfs_buf *,
233 enum xfs_blft);
234void xfs_trans_buf_copy_type(struct xfs_buf *dst_bp,
235 struct xfs_buf *src_bp);
236
a8272ce0 237extern kmem_zone_t *xfs_trans_zone;
e98c414f 238extern kmem_zone_t *xfs_log_item_desc_zone;
a8272ce0 239
f8dbebef 240/* rmap updates */
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241enum xfs_rmap_intent_type;
242
f8dbebef 243void xfs_rmap_update_init_defer_op(void);
9e88b5d8 244struct xfs_rud_log_item *xfs_trans_get_rud(struct xfs_trans *tp,
722e2517 245 struct xfs_rui_log_item *ruip);
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246int xfs_trans_log_finish_rmap_update(struct xfs_trans *tp,
247 struct xfs_rud_log_item *rudp, enum xfs_rmap_intent_type type,
c8ce540d 248 uint64_t owner, int whichfork, xfs_fileoff_t startoff,
9e88b5d8 249 xfs_fsblock_t startblock, xfs_filblks_t blockcount,
9c194644 250 xfs_exntst_t state, struct xfs_btree_cur **pcur);
9e88b5d8 251
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252/* refcount updates */
253enum xfs_refcount_intent_type;
254
33ba6129 255void xfs_refcount_update_init_defer_op(void);
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256struct xfs_cud_log_item *xfs_trans_get_cud(struct xfs_trans *tp,
257 struct xfs_cui_log_item *cuip);
258int xfs_trans_log_finish_refcount_update(struct xfs_trans *tp,
33ba6129 259 struct xfs_cud_log_item *cudp, struct xfs_defer_ops *dfops,
f997ee21 260 enum xfs_refcount_intent_type type, xfs_fsblock_t startblock,
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261 xfs_extlen_t blockcount, xfs_fsblock_t *new_fsb,
262 xfs_extlen_t *new_len, struct xfs_btree_cur **pcur);
f997ee21 263
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264/* mapping updates */
265enum xfs_bmap_intent_type;
266
267void xfs_bmap_update_init_defer_op(void);
268struct xfs_bud_log_item *xfs_trans_get_bud(struct xfs_trans *tp,
269 struct xfs_bui_log_item *buip);
270int xfs_trans_log_finish_bmap_update(struct xfs_trans *tp,
271 struct xfs_bud_log_item *rudp, struct xfs_defer_ops *dfops,
272 enum xfs_bmap_intent_type type, struct xfs_inode *ip,
273 int whichfork, xfs_fileoff_t startoff, xfs_fsblock_t startblock,
e1a4e37c 274 xfs_filblks_t *blockcount, xfs_exntst_t state);
77d61fe4 275
1da177e4 276#endif /* __XFS_TRANS_H__ */