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1da177e4 | 1 | /* |
7b718769 NS |
2 | * Copyright (c) 2000-2003,2005 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_LOG_H__ | |
19 | #define __XFS_LOG_H__ | |
20 | ||
fc06c6d0 | 21 | #include "xfs_log_format.h" |
b53e675d | 22 | |
fc06c6d0 DC |
23 | struct xfs_log_vec { |
24 | struct xfs_log_vec *lv_next; /* next lv in build list */ | |
25 | int lv_niovecs; /* number of iovecs in lv */ | |
26 | struct xfs_log_iovec *lv_iovecp; /* iovec array */ | |
27 | struct xfs_log_item *lv_item; /* owner */ | |
28 | char *lv_buf; /* formatted buffer */ | |
29 | int lv_buf_len; /* size of formatted buffer */ | |
7492c5b4 | 30 | int lv_size; /* size of allocated lv */ |
fc06c6d0 DC |
31 | }; |
32 | ||
33 | #define XFS_LOG_VEC_ORDERED (-1) | |
34 | ||
35 | /* | |
36 | * Structure used to pass callback function and the function's argument | |
37 | * to the log manager. | |
38 | */ | |
39 | typedef struct xfs_log_callback { | |
40 | struct xfs_log_callback *cb_next; | |
41 | void (*cb_func)(void *, int); | |
42 | void *cb_arg; | |
43 | } xfs_log_callback_t; | |
1da177e4 | 44 | |
1da177e4 | 45 | /* |
c41564b5 | 46 | * By comparing each component, we don't have to worry about extra |
1da177e4 LT |
47 | * endian issues in treating two 32 bit numbers as one 64 bit number |
48 | */ | |
a1365647 | 49 | static inline xfs_lsn_t _lsn_cmp(xfs_lsn_t lsn1, xfs_lsn_t lsn2) |
1da177e4 LT |
50 | { |
51 | if (CYCLE_LSN(lsn1) != CYCLE_LSN(lsn2)) | |
52 | return (CYCLE_LSN(lsn1)<CYCLE_LSN(lsn2))? -999 : 999; | |
53 | ||
54 | if (BLOCK_LSN(lsn1) != BLOCK_LSN(lsn2)) | |
55 | return (BLOCK_LSN(lsn1)<BLOCK_LSN(lsn2))? -999 : 999; | |
56 | ||
57 | return 0; | |
58 | } | |
59 | ||
60 | #define XFS_LSN_CMP(x,y) _lsn_cmp(x,y) | |
61 | ||
62 | /* | |
63 | * Macros, structures, prototypes for interface to the log manager. | |
64 | */ | |
65 | ||
1da177e4 LT |
66 | /* |
67 | * Flags to xfs_log_done() | |
68 | */ | |
69 | #define XFS_LOG_REL_PERM_RESERV 0x1 | |
70 | ||
1da177e4 LT |
71 | /* |
72 | * Flags to xfs_log_force() | |
73 | * | |
74 | * XFS_LOG_SYNC: Synchronous force in-core log to disk | |
1da177e4 LT |
75 | */ |
76 | #define XFS_LOG_SYNC 0x1 | |
1da177e4 | 77 | |
1da177e4 LT |
78 | /* Log manager interfaces */ |
79 | struct xfs_mount; | |
35a8a72f | 80 | struct xlog_in_core; |
cc09c0dc | 81 | struct xlog_ticket; |
43f5efc5 DC |
82 | struct xfs_log_item; |
83 | struct xfs_item_ops; | |
955833cf | 84 | struct xfs_trans; |
43f5efc5 DC |
85 | |
86 | void xfs_log_item_init(struct xfs_mount *mp, | |
87 | struct xfs_log_item *item, | |
88 | int type, | |
272e42b2 | 89 | const struct xfs_item_ops *ops); |
35a8a72f | 90 | |
1da177e4 | 91 | xfs_lsn_t xfs_log_done(struct xfs_mount *mp, |
35a8a72f CH |
92 | struct xlog_ticket *ticket, |
93 | struct xlog_in_core **iclog, | |
1da177e4 | 94 | uint flags); |
f538d4da | 95 | int _xfs_log_force(struct xfs_mount *mp, |
f538d4da CH |
96 | uint flags, |
97 | int *log_forced); | |
b911ca04 | 98 | void xfs_log_force(struct xfs_mount *mp, |
b911ca04 | 99 | uint flags); |
a14a348b CH |
100 | int _xfs_log_force_lsn(struct xfs_mount *mp, |
101 | xfs_lsn_t lsn, | |
102 | uint flags, | |
103 | int *log_forced); | |
104 | void xfs_log_force_lsn(struct xfs_mount *mp, | |
105 | xfs_lsn_t lsn, | |
106 | uint flags); | |
1da177e4 LT |
107 | int xfs_log_mount(struct xfs_mount *mp, |
108 | struct xfs_buftarg *log_target, | |
109 | xfs_daddr_t start_block, | |
110 | int num_bblocks); | |
4249023a | 111 | int xfs_log_mount_finish(struct xfs_mount *mp); |
09a423a3 | 112 | xfs_lsn_t xlog_assign_tail_lsn(struct xfs_mount *mp); |
1c304625 | 113 | xfs_lsn_t xlog_assign_tail_lsn_locked(struct xfs_mount *mp); |
cfb7cdca | 114 | void xfs_log_space_wake(struct xfs_mount *mp); |
1da177e4 | 115 | int xfs_log_notify(struct xfs_mount *mp, |
35a8a72f | 116 | struct xlog_in_core *iclog, |
1da177e4 LT |
117 | xfs_log_callback_t *callback_entry); |
118 | int xfs_log_release_iclog(struct xfs_mount *mp, | |
35a8a72f | 119 | struct xlog_in_core *iclog); |
1da177e4 LT |
120 | int xfs_log_reserve(struct xfs_mount *mp, |
121 | int length, | |
122 | int count, | |
35a8a72f | 123 | struct xlog_ticket **ticket, |
1da177e4 | 124 | __uint8_t clientid, |
9006fb91 | 125 | bool permanent, |
7e9c6396 | 126 | uint t_type); |
9006fb91 | 127 | int xfs_log_regrant(struct xfs_mount *mp, struct xlog_ticket *tic); |
1da177e4 | 128 | int xfs_log_unmount_write(struct xfs_mount *mp); |
21b699c8 | 129 | void xfs_log_unmount(struct xfs_mount *mp); |
1da177e4 LT |
130 | int xfs_log_force_umount(struct xfs_mount *mp, int logerror); |
131 | int xfs_log_need_covered(struct xfs_mount *mp); | |
132 | ||
133 | void xlog_iodone(struct xfs_buf *); | |
134 | ||
71e330b5 | 135 | struct xlog_ticket *xfs_log_ticket_get(struct xlog_ticket *ticket); |
cc09c0dc DC |
136 | void xfs_log_ticket_put(struct xlog_ticket *ticket); |
137 | ||
0244b960 | 138 | int xfs_log_commit_cil(struct xfs_mount *mp, struct xfs_trans *tp, |
71e330b5 | 139 | xfs_lsn_t *commit_lsn, int flags); |
ccf7c23f | 140 | bool xfs_log_item_in_current_chkpt(struct xfs_log_item *lip); |
71e330b5 | 141 | |
f661f1e0 DC |
142 | void xfs_log_work_queue(struct xfs_mount *mp); |
143 | void xfs_log_worker(struct work_struct *work); | |
c75921a7 | 144 | void xfs_log_quiesce(struct xfs_mount *mp); |
f661f1e0 | 145 | |
1da177e4 | 146 | #endif /* __XFS_LOG_H__ */ |