Commit | Line | Data |
---|---|---|
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 DC |
21 | struct xfs_log_vec { |
22 | struct xfs_log_vec *lv_next; /* next lv in build list */ | |
23 | int lv_niovecs; /* number of iovecs in lv */ | |
24 | struct xfs_log_iovec *lv_iovecp; /* iovec array */ | |
25 | struct xfs_log_item *lv_item; /* owner */ | |
26 | char *lv_buf; /* formatted buffer */ | |
27 | int lv_buf_len; /* size of formatted buffer */ | |
7492c5b4 | 28 | int lv_size; /* size of allocated lv */ |
fc06c6d0 DC |
29 | }; |
30 | ||
31 | #define XFS_LOG_VEC_ORDERED (-1) | |
32 | ||
1234351c | 33 | static inline void * |
bde7cff6 CH |
34 | xlog_prepare_iovec(struct xfs_log_vec *lv, struct xfs_log_iovec **vecp, |
35 | uint type) | |
1234351c CH |
36 | { |
37 | struct xfs_log_iovec *vec = *vecp; | |
38 | ||
bde7cff6 CH |
39 | if (vec) { |
40 | ASSERT(vec - lv->lv_iovecp < lv->lv_niovecs); | |
41 | vec++; | |
42 | } else { | |
43 | vec = &lv->lv_iovecp[0]; | |
44 | } | |
45 | ||
1234351c | 46 | vec->i_type = type; |
bde7cff6 CH |
47 | vec->i_addr = lv->lv_buf + lv->lv_buf_len; |
48 | ||
49 | ASSERT(IS_ALIGNED((unsigned long)vec->i_addr, sizeof(uint64_t))); | |
1234351c | 50 | |
bde7cff6 | 51 | *vecp = vec; |
1234351c CH |
52 | return vec->i_addr; |
53 | } | |
54 | ||
bde7cff6 CH |
55 | static inline void |
56 | xlog_finish_iovec(struct xfs_log_vec *lv, struct xfs_log_iovec *vec, int len) | |
57 | { | |
58 | /* | |
59 | * We need to make sure the next buffer is naturally aligned for the | |
60 | * biggest basic data type we put into it. We already accounted for | |
61 | * this when sizing the buffer. | |
62 | */ | |
63 | lv->lv_buf_len += round_up(len, sizeof(uint64_t)); | |
64 | vec->i_len = len; | |
65 | } | |
66 | ||
67 | static inline void * | |
68 | xlog_copy_iovec(struct xfs_log_vec *lv, struct xfs_log_iovec **vecp, | |
69 | uint type, void *data, int len) | |
70 | { | |
71 | void *buf; | |
72 | ||
73 | buf = xlog_prepare_iovec(lv, vecp, type); | |
74 | memcpy(buf, data, len); | |
75 | xlog_finish_iovec(lv, *vecp, len); | |
76 | return buf; | |
77 | } | |
78 | ||
fc06c6d0 DC |
79 | /* |
80 | * Structure used to pass callback function and the function's argument | |
81 | * to the log manager. | |
82 | */ | |
83 | typedef struct xfs_log_callback { | |
84 | struct xfs_log_callback *cb_next; | |
85 | void (*cb_func)(void *, int); | |
86 | void *cb_arg; | |
87 | } xfs_log_callback_t; | |
1da177e4 | 88 | |
1da177e4 | 89 | /* |
c41564b5 | 90 | * By comparing each component, we don't have to worry about extra |
1da177e4 LT |
91 | * endian issues in treating two 32 bit numbers as one 64 bit number |
92 | */ | |
a1365647 | 93 | static inline xfs_lsn_t _lsn_cmp(xfs_lsn_t lsn1, xfs_lsn_t lsn2) |
1da177e4 LT |
94 | { |
95 | if (CYCLE_LSN(lsn1) != CYCLE_LSN(lsn2)) | |
96 | return (CYCLE_LSN(lsn1)<CYCLE_LSN(lsn2))? -999 : 999; | |
97 | ||
98 | if (BLOCK_LSN(lsn1) != BLOCK_LSN(lsn2)) | |
99 | return (BLOCK_LSN(lsn1)<BLOCK_LSN(lsn2))? -999 : 999; | |
100 | ||
101 | return 0; | |
102 | } | |
103 | ||
104 | #define XFS_LSN_CMP(x,y) _lsn_cmp(x,y) | |
105 | ||
106 | /* | |
107 | * Macros, structures, prototypes for interface to the log manager. | |
108 | */ | |
109 | ||
1da177e4 LT |
110 | /* |
111 | * Flags to xfs_log_done() | |
112 | */ | |
113 | #define XFS_LOG_REL_PERM_RESERV 0x1 | |
114 | ||
1da177e4 LT |
115 | /* |
116 | * Flags to xfs_log_force() | |
117 | * | |
118 | * XFS_LOG_SYNC: Synchronous force in-core log to disk | |
1da177e4 LT |
119 | */ |
120 | #define XFS_LOG_SYNC 0x1 | |
1da177e4 | 121 | |
1da177e4 LT |
122 | /* Log manager interfaces */ |
123 | struct xfs_mount; | |
35a8a72f | 124 | struct xlog_in_core; |
cc09c0dc | 125 | struct xlog_ticket; |
43f5efc5 DC |
126 | struct xfs_log_item; |
127 | struct xfs_item_ops; | |
955833cf | 128 | struct xfs_trans; |
239880ef | 129 | struct xfs_log_callback; |
35a8a72f | 130 | |
1da177e4 | 131 | xfs_lsn_t xfs_log_done(struct xfs_mount *mp, |
35a8a72f CH |
132 | struct xlog_ticket *ticket, |
133 | struct xlog_in_core **iclog, | |
1da177e4 | 134 | uint flags); |
f538d4da | 135 | int _xfs_log_force(struct xfs_mount *mp, |
f538d4da CH |
136 | uint flags, |
137 | int *log_forced); | |
b911ca04 | 138 | void xfs_log_force(struct xfs_mount *mp, |
b911ca04 | 139 | uint flags); |
a14a348b CH |
140 | int _xfs_log_force_lsn(struct xfs_mount *mp, |
141 | xfs_lsn_t lsn, | |
142 | uint flags, | |
143 | int *log_forced); | |
144 | void xfs_log_force_lsn(struct xfs_mount *mp, | |
145 | xfs_lsn_t lsn, | |
146 | uint flags); | |
1da177e4 LT |
147 | int xfs_log_mount(struct xfs_mount *mp, |
148 | struct xfs_buftarg *log_target, | |
149 | xfs_daddr_t start_block, | |
150 | int num_bblocks); | |
4249023a | 151 | int xfs_log_mount_finish(struct xfs_mount *mp); |
09a423a3 | 152 | xfs_lsn_t xlog_assign_tail_lsn(struct xfs_mount *mp); |
1c304625 | 153 | xfs_lsn_t xlog_assign_tail_lsn_locked(struct xfs_mount *mp); |
cfb7cdca | 154 | void xfs_log_space_wake(struct xfs_mount *mp); |
1da177e4 | 155 | int xfs_log_notify(struct xfs_mount *mp, |
35a8a72f | 156 | struct xlog_in_core *iclog, |
239880ef | 157 | struct xfs_log_callback *callback_entry); |
1da177e4 | 158 | int xfs_log_release_iclog(struct xfs_mount *mp, |
35a8a72f | 159 | struct xlog_in_core *iclog); |
1da177e4 LT |
160 | int xfs_log_reserve(struct xfs_mount *mp, |
161 | int length, | |
162 | int count, | |
35a8a72f | 163 | struct xlog_ticket **ticket, |
1da177e4 | 164 | __uint8_t clientid, |
9006fb91 | 165 | bool permanent, |
7e9c6396 | 166 | uint t_type); |
9006fb91 | 167 | int xfs_log_regrant(struct xfs_mount *mp, struct xlog_ticket *tic); |
1da177e4 | 168 | int xfs_log_unmount_write(struct xfs_mount *mp); |
21b699c8 | 169 | void xfs_log_unmount(struct xfs_mount *mp); |
1da177e4 LT |
170 | int xfs_log_force_umount(struct xfs_mount *mp, int logerror); |
171 | int xfs_log_need_covered(struct xfs_mount *mp); | |
172 | ||
173 | void xlog_iodone(struct xfs_buf *); | |
174 | ||
71e330b5 | 175 | struct xlog_ticket *xfs_log_ticket_get(struct xlog_ticket *ticket); |
cc09c0dc DC |
176 | void xfs_log_ticket_put(struct xlog_ticket *ticket); |
177 | ||
c6f97264 | 178 | void xfs_log_commit_cil(struct xfs_mount *mp, struct xfs_trans *tp, |
71e330b5 | 179 | xfs_lsn_t *commit_lsn, int flags); |
ccf7c23f | 180 | bool xfs_log_item_in_current_chkpt(struct xfs_log_item *lip); |
71e330b5 | 181 | |
f661f1e0 DC |
182 | void xfs_log_work_queue(struct xfs_mount *mp); |
183 | void xfs_log_worker(struct work_struct *work); | |
c75921a7 | 184 | void xfs_log_quiesce(struct xfs_mount *mp); |
f661f1e0 | 185 | |
1da177e4 | 186 | #endif /* __XFS_LOG_H__ */ |