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1da177e4 | 1 | /* |
7b718769 NS |
2 | * Copyright (c) 2000-2002,2005 Silicon Graphics, Inc. |
3 | * All Rights Reserved. | |
1da177e4 | 4 | * |
7b718769 NS |
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 | |
1da177e4 LT |
7 | * published by the Free Software Foundation. |
8 | * | |
7b718769 NS |
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 | * |
7b718769 NS |
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 | |
1da177e4 LT |
17 | */ |
18 | #ifndef __XFS_TRANS_H__ | |
19 | #define __XFS_TRANS_H__ | |
20 | ||
847fff5c BN |
21 | struct xfs_log_item; |
22 | ||
7fd36c44 | 23 | #include "xfs_trans_resv.h" |
1da177e4 | 24 | |
7fd36c44 | 25 | /* kernel only transaction subsystem defines */ |
847fff5c BN |
26 | |
27 | struct xfs_buf; | |
28 | struct xfs_buftarg; | |
29 | struct xfs_efd_log_item; | |
30 | struct xfs_efi_log_item; | |
31 | struct xfs_inode; | |
32 | struct xfs_item_ops; | |
33 | struct xfs_log_iovec; | |
34 | struct xfs_log_item_desc; | |
35 | struct xfs_mount; | |
36 | struct xfs_trans; | |
37 | struct xfs_dquot_acct; | |
ed3b4d6c | 38 | struct xfs_busy_extent; |
847fff5c BN |
39 | |
40 | typedef struct xfs_log_item { | |
41 | struct list_head li_ail; /* AIL pointers */ | |
42 | xfs_lsn_t li_lsn; /* last on-disk lsn */ | |
43 | struct xfs_log_item_desc *li_desc; /* ptr to current desc*/ | |
44 | struct xfs_mount *li_mountp; /* ptr to fs mount */ | |
fc1829f3 | 45 | struct xfs_ail *li_ailp; /* ptr to AIL */ |
847fff5c BN |
46 | uint li_type; /* item type */ |
47 | uint li_flags; /* misc flags */ | |
48 | struct xfs_log_item *li_bio_list; /* buffer item list */ | |
49 | void (*li_cb)(struct xfs_buf *, | |
50 | struct xfs_log_item *); | |
51 | /* buffer item iodone */ | |
52 | /* callback func */ | |
272e42b2 | 53 | const struct xfs_item_ops *li_ops; /* function list */ |
71e330b5 DC |
54 | |
55 | /* delayed logging */ | |
56 | struct list_head li_cil; /* CIL pointers */ | |
57 | struct xfs_log_vec *li_lv; /* active log vector */ | |
ccf7c23f | 58 | xfs_lsn_t li_seq; /* CIL commit seq */ |
847fff5c BN |
59 | } xfs_log_item_t; |
60 | ||
61 | #define XFS_LI_IN_AIL 0x1 | |
62 | #define XFS_LI_ABORTED 0x2 | |
63 | ||
0b1b213f CH |
64 | #define XFS_LI_FLAGS \ |
65 | { XFS_LI_IN_AIL, "IN_AIL" }, \ | |
66 | { XFS_LI_ABORTED, "ABORTED" } | |
67 | ||
272e42b2 | 68 | struct xfs_item_ops { |
847fff5c BN |
69 | uint (*iop_size)(xfs_log_item_t *); |
70 | void (*iop_format)(xfs_log_item_t *, struct xfs_log_iovec *); | |
71 | void (*iop_pin)(xfs_log_item_t *); | |
9412e318 | 72 | void (*iop_unpin)(xfs_log_item_t *, int remove); |
43ff2122 | 73 | uint (*iop_push)(struct xfs_log_item *, struct list_head *); |
847fff5c BN |
74 | void (*iop_unlock)(xfs_log_item_t *); |
75 | xfs_lsn_t (*iop_committed)(xfs_log_item_t *, xfs_lsn_t); | |
847fff5c | 76 | void (*iop_committing)(xfs_log_item_t *, xfs_lsn_t); |
272e42b2 | 77 | }; |
847fff5c BN |
78 | |
79 | #define IOP_SIZE(ip) (*(ip)->li_ops->iop_size)(ip) | |
80 | #define IOP_FORMAT(ip,vp) (*(ip)->li_ops->iop_format)(ip, vp) | |
81 | #define IOP_PIN(ip) (*(ip)->li_ops->iop_pin)(ip) | |
9412e318 | 82 | #define IOP_UNPIN(ip, remove) (*(ip)->li_ops->iop_unpin)(ip, remove) |
43ff2122 | 83 | #define IOP_PUSH(ip, list) (*(ip)->li_ops->iop_push)(ip, list) |
847fff5c BN |
84 | #define IOP_UNLOCK(ip) (*(ip)->li_ops->iop_unlock)(ip) |
85 | #define IOP_COMMITTED(ip, lsn) (*(ip)->li_ops->iop_committed)(ip, lsn) | |
847fff5c BN |
86 | #define IOP_COMMITTING(ip, lsn) (*(ip)->li_ops->iop_committing)(ip, lsn) |
87 | ||
88 | /* | |
43ff2122 | 89 | * Return values for the IOP_PUSH() routines. |
847fff5c | 90 | */ |
43ff2122 CH |
91 | #define XFS_ITEM_SUCCESS 0 |
92 | #define XFS_ITEM_PINNED 1 | |
93 | #define XFS_ITEM_LOCKED 2 | |
94 | #define XFS_ITEM_FLUSHING 3 | |
847fff5c | 95 | |
847fff5c BN |
96 | /* |
97 | * This is the type of function which can be given to xfs_trans_callback() | |
98 | * to be called upon the transaction's commit to disk. | |
99 | */ | |
100 | typedef void (*xfs_trans_callback_t)(struct xfs_trans *, void *); | |
101 | ||
102 | /* | |
103 | * This is the structure maintained for every active transaction. | |
104 | */ | |
105 | typedef struct xfs_trans { | |
106 | unsigned int t_magic; /* magic number */ | |
107 | xfs_log_callback_t t_logcb; /* log callback struct */ | |
108 | unsigned int t_type; /* transaction type */ | |
109 | unsigned int t_log_res; /* amt of log space resvd */ | |
110 | unsigned int t_log_count; /* count for perm log res */ | |
111 | unsigned int t_blk_res; /* # of blocks resvd */ | |
112 | unsigned int t_blk_res_used; /* # of resvd blocks used */ | |
113 | unsigned int t_rtx_res; /* # of rt extents resvd */ | |
114 | unsigned int t_rtx_res_used; /* # of resvd rt extents used */ | |
35a8a72f | 115 | struct xlog_ticket *t_ticket; /* log mgr ticket */ |
847fff5c BN |
116 | xfs_lsn_t t_lsn; /* log seq num of start of |
117 | * transaction. */ | |
118 | xfs_lsn_t t_commit_lsn; /* log seq num of end of | |
119 | * transaction. */ | |
120 | struct xfs_mount *t_mountp; /* ptr to fs mount struct */ | |
121 | struct xfs_dquot_acct *t_dqinfo; /* acctg info for dquots */ | |
847fff5c BN |
122 | unsigned int t_flags; /* misc flags */ |
123 | int64_t t_icount_delta; /* superblock icount change */ | |
124 | int64_t t_ifree_delta; /* superblock ifree change */ | |
125 | int64_t t_fdblocks_delta; /* superblock fdblocks chg */ | |
126 | int64_t t_res_fdblocks_delta; /* on-disk only chg */ | |
127 | int64_t t_frextents_delta;/* superblock freextents chg*/ | |
128 | int64_t t_res_frextents_delta; /* on-disk only chg */ | |
742ae1e3 | 129 | #if defined(DEBUG) || defined(XFS_WARN) |
847fff5c BN |
130 | int64_t t_ag_freeblks_delta; /* debugging counter */ |
131 | int64_t t_ag_flist_delta; /* debugging counter */ | |
132 | int64_t t_ag_btree_delta; /* debugging counter */ | |
133 | #endif | |
134 | int64_t t_dblocks_delta;/* superblock dblocks change */ | |
135 | int64_t t_agcount_delta;/* superblock agcount change */ | |
136 | int64_t t_imaxpct_delta;/* superblock imaxpct change */ | |
137 | int64_t t_rextsize_delta;/* superblock rextsize chg */ | |
138 | int64_t t_rbmblocks_delta;/* superblock rbmblocks chg */ | |
139 | int64_t t_rblocks_delta;/* superblock rblocks change */ | |
140 | int64_t t_rextents_delta;/* superblocks rextents chg */ | |
141 | int64_t t_rextslog_delta;/* superblocks rextslog chg */ | |
e98c414f | 142 | struct list_head t_items; /* log item descriptors */ |
847fff5c | 143 | xfs_trans_header_t t_header; /* header for in-log trans */ |
ed3b4d6c | 144 | struct list_head t_busy; /* list of busy extents */ |
847fff5c BN |
145 | unsigned long t_pflags; /* saved process flags state */ |
146 | } xfs_trans_t; | |
147 | ||
1da177e4 LT |
148 | /* |
149 | * XFS transaction mechanism exported interfaces that are | |
150 | * actually macros. | |
151 | */ | |
152 | #define xfs_trans_get_log_res(tp) ((tp)->t_log_res) | |
153 | #define xfs_trans_get_log_count(tp) ((tp)->t_log_count) | |
154 | #define xfs_trans_get_block_res(tp) ((tp)->t_blk_res) | |
155 | #define xfs_trans_set_sync(tp) ((tp)->t_flags |= XFS_TRANS_SYNC) | |
156 | ||
742ae1e3 | 157 | #if defined(DEBUG) || defined(XFS_WARN) |
20f4ebf2 DC |
158 | #define xfs_trans_agblocks_delta(tp, d) ((tp)->t_ag_freeblks_delta += (int64_t)d) |
159 | #define xfs_trans_agflist_delta(tp, d) ((tp)->t_ag_flist_delta += (int64_t)d) | |
160 | #define xfs_trans_agbtree_delta(tp, d) ((tp)->t_ag_btree_delta += (int64_t)d) | |
1da177e4 LT |
161 | #else |
162 | #define xfs_trans_agblocks_delta(tp, d) | |
163 | #define xfs_trans_agflist_delta(tp, d) | |
164 | #define xfs_trans_agbtree_delta(tp, d) | |
165 | #endif | |
166 | ||
167 | /* | |
168 | * XFS transaction mechanism exported interfaces. | |
169 | */ | |
1da177e4 | 170 | xfs_trans_t *xfs_trans_alloc(struct xfs_mount *, uint); |
77ba7877 | 171 | xfs_trans_t *_xfs_trans_alloc(struct xfs_mount *, uint, xfs_km_flags_t); |
1da177e4 LT |
172 | xfs_trans_t *xfs_trans_dup(xfs_trans_t *); |
173 | int xfs_trans_reserve(xfs_trans_t *, uint, uint, uint, | |
174 | uint, uint); | |
20f4ebf2 | 175 | void xfs_trans_mod_sb(xfs_trans_t *, uint, int64_t); |
de2a4f59 DC |
176 | |
177 | struct xfs_buf *xfs_trans_get_buf_map(struct xfs_trans *tp, | |
178 | struct xfs_buftarg *target, | |
179 | struct xfs_buf_map *map, int nmaps, | |
180 | uint flags); | |
181 | ||
182 | static inline struct xfs_buf * | |
183 | xfs_trans_get_buf( | |
184 | struct xfs_trans *tp, | |
185 | struct xfs_buftarg *target, | |
186 | xfs_daddr_t blkno, | |
187 | int numblks, | |
188 | uint flags) | |
189 | { | |
c3f8fc73 | 190 | DEFINE_SINGLE_BUF_MAP(map, blkno, numblks); |
de2a4f59 DC |
191 | return xfs_trans_get_buf_map(tp, target, &map, 1, flags); |
192 | } | |
193 | ||
194 | int xfs_trans_read_buf_map(struct xfs_mount *mp, | |
195 | struct xfs_trans *tp, | |
196 | struct xfs_buftarg *target, | |
197 | struct xfs_buf_map *map, int nmaps, | |
198 | xfs_buf_flags_t flags, | |
c3f8fc73 | 199 | struct xfs_buf **bpp, |
1813dd64 | 200 | const struct xfs_buf_ops *ops); |
de2a4f59 DC |
201 | |
202 | static inline int | |
203 | xfs_trans_read_buf( | |
204 | struct xfs_mount *mp, | |
205 | struct xfs_trans *tp, | |
206 | struct xfs_buftarg *target, | |
207 | xfs_daddr_t blkno, | |
208 | int numblks, | |
209 | xfs_buf_flags_t flags, | |
c3f8fc73 | 210 | struct xfs_buf **bpp, |
1813dd64 | 211 | const struct xfs_buf_ops *ops) |
de2a4f59 | 212 | { |
c3f8fc73 DC |
213 | DEFINE_SINGLE_BUF_MAP(map, blkno, numblks); |
214 | return xfs_trans_read_buf_map(mp, tp, target, &map, 1, | |
1813dd64 | 215 | flags, bpp, ops); |
de2a4f59 DC |
216 | } |
217 | ||
1da177e4 LT |
218 | struct xfs_buf *xfs_trans_getsb(xfs_trans_t *, struct xfs_mount *, int); |
219 | ||
220 | void xfs_trans_brelse(xfs_trans_t *, struct xfs_buf *); | |
221 | void xfs_trans_bjoin(xfs_trans_t *, struct xfs_buf *); | |
222 | void xfs_trans_bhold(xfs_trans_t *, struct xfs_buf *); | |
efa092f3 | 223 | void xfs_trans_bhold_release(xfs_trans_t *, struct xfs_buf *); |
1da177e4 LT |
224 | void xfs_trans_binval(xfs_trans_t *, struct xfs_buf *); |
225 | void xfs_trans_inode_buf(xfs_trans_t *, struct xfs_buf *); | |
1da177e4 | 226 | void xfs_trans_stale_inode_buf(xfs_trans_t *, struct xfs_buf *); |
5f6bed76 | 227 | void xfs_trans_ordered_buf(xfs_trans_t *, struct xfs_buf *); |
1da177e4 LT |
228 | void xfs_trans_dquot_buf(xfs_trans_t *, struct xfs_buf *, uint); |
229 | void xfs_trans_inode_alloc_buf(xfs_trans_t *, struct xfs_buf *); | |
dcd79a14 | 230 | void xfs_trans_ichgtime(struct xfs_trans *, struct xfs_inode *, int); |
ddc3415a | 231 | void xfs_trans_ijoin(struct xfs_trans *, struct xfs_inode *, uint); |
1da177e4 LT |
232 | void xfs_trans_log_buf(xfs_trans_t *, struct xfs_buf *, uint, uint); |
233 | void xfs_trans_log_inode(xfs_trans_t *, struct xfs_inode *, uint); | |
234 | struct xfs_efi_log_item *xfs_trans_get_efi(xfs_trans_t *, uint); | |
235 | void xfs_efi_release(struct xfs_efi_log_item *, uint); | |
236 | void xfs_trans_log_efi_extent(xfs_trans_t *, | |
237 | struct xfs_efi_log_item *, | |
238 | xfs_fsblock_t, | |
239 | xfs_extlen_t); | |
240 | struct xfs_efd_log_item *xfs_trans_get_efd(xfs_trans_t *, | |
241 | struct xfs_efi_log_item *, | |
242 | uint); | |
243 | void xfs_trans_log_efd_extent(xfs_trans_t *, | |
244 | struct xfs_efd_log_item *, | |
245 | xfs_fsblock_t, | |
246 | xfs_extlen_t); | |
b1037058 | 247 | int xfs_trans_commit(xfs_trans_t *, uint flags); |
1da177e4 | 248 | void xfs_trans_cancel(xfs_trans_t *, int); |
249a8c11 DC |
249 | int xfs_trans_ail_init(struct xfs_mount *); |
250 | void xfs_trans_ail_destroy(struct xfs_mount *); | |
1da177e4 | 251 | |
a8272ce0 | 252 | extern kmem_zone_t *xfs_trans_zone; |
e98c414f | 253 | extern kmem_zone_t *xfs_log_item_desc_zone; |
a8272ce0 | 254 | |
1da177e4 | 255 | #endif /* __XFS_TRANS_H__ */ |