Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1 | /* |
Nathan Scott | 7b71876 | 2005-11-02 14:58:39 +1100 | [diff] [blame] | 2 | * Copyright (c) 2000-2003,2005 Silicon Graphics, Inc. |
| 3 | * All Rights Reserved. |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 4 | * |
Nathan Scott | 7b71876 | 2005-11-02 14:58:39 +1100 | [diff] [blame] | 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 |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 7 | * published by the Free Software Foundation. |
| 8 | * |
Nathan Scott | 7b71876 | 2005-11-02 14:58:39 +1100 | [diff] [blame] | 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. |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 13 | * |
Nathan Scott | 7b71876 | 2005-11-02 14:58:39 +1100 | [diff] [blame] | 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 |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 17 | */ |
| 18 | #ifndef __XFS_LOG_H__ |
| 19 | #define __XFS_LOG_H__ |
| 20 | |
Dave Chinner | fc06c6d | 2013-08-12 20:49:22 +1000 | [diff] [blame] | 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 */ |
Dave Chinner | 7492c5b | 2013-08-12 20:50:05 +1000 | [diff] [blame] | 28 | int lv_size; /* size of allocated lv */ |
Dave Chinner | fc06c6d | 2013-08-12 20:49:22 +1000 | [diff] [blame] | 29 | }; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 30 | |
Dave Chinner | fc06c6d | 2013-08-12 20:49:22 +1000 | [diff] [blame] | 31 | #define XFS_LOG_VEC_ORDERED (-1) |
| 32 | |
Christoph Hellwig | 1234351 | 2013-12-13 11:00:43 +1100 | [diff] [blame] | 33 | static inline void * |
Christoph Hellwig | bde7cff | 2013-12-13 11:34:02 +1100 | [diff] [blame] | 34 | xlog_prepare_iovec(struct xfs_log_vec *lv, struct xfs_log_iovec **vecp, |
| 35 | uint type) |
Christoph Hellwig | 1234351 | 2013-12-13 11:00:43 +1100 | [diff] [blame] | 36 | { |
| 37 | struct xfs_log_iovec *vec = *vecp; |
| 38 | |
Christoph Hellwig | bde7cff | 2013-12-13 11:34:02 +1100 | [diff] [blame] | 39 | if (vec) { |
| 40 | ASSERT(vec - lv->lv_iovecp < lv->lv_niovecs); |
| 41 | vec++; |
| 42 | } else { |
| 43 | vec = &lv->lv_iovecp[0]; |
| 44 | } |
Christoph Hellwig | 1234351 | 2013-12-13 11:00:43 +1100 | [diff] [blame] | 45 | |
Christoph Hellwig | bde7cff | 2013-12-13 11:34:02 +1100 | [diff] [blame] | 46 | vec->i_type = type; |
| 47 | vec->i_addr = lv->lv_buf + lv->lv_buf_len; |
| 48 | |
| 49 | ASSERT(IS_ALIGNED((unsigned long)vec->i_addr, sizeof(uint64_t))); |
| 50 | |
| 51 | *vecp = vec; |
Christoph Hellwig | 1234351 | 2013-12-13 11:00:43 +1100 | [diff] [blame] | 52 | return vec->i_addr; |
| 53 | } |
| 54 | |
Christoph Hellwig | bde7cff | 2013-12-13 11:34:02 +1100 | [diff] [blame] | 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 | |
Dave Chinner | fc06c6d | 2013-08-12 20:49:22 +1000 | [diff] [blame] | 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; |
| 88 | |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 89 | /* |
Nathan Scott | c41564b | 2006-03-29 08:55:14 +1000 | [diff] [blame] | 90 | * By comparing each component, we don't have to worry about extra |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 91 | * endian issues in treating two 32 bit numbers as one 64 bit number |
| 92 | */ |
Andrew Morton | a136564 | 2006-01-08 01:04:09 -0800 | [diff] [blame] | 93 | static inline xfs_lsn_t _lsn_cmp(xfs_lsn_t lsn1, xfs_lsn_t lsn2) |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 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 | |
| 110 | /* |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 111 | * Flags to xfs_log_done() |
| 112 | */ |
| 113 | #define XFS_LOG_REL_PERM_RESERV 0x1 |
| 114 | |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 115 | /* |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 116 | * Flags to xfs_log_force() |
| 117 | * |
| 118 | * XFS_LOG_SYNC: Synchronous force in-core log to disk |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 119 | */ |
| 120 | #define XFS_LOG_SYNC 0x1 |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 121 | |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 122 | /* Log manager interfaces */ |
| 123 | struct xfs_mount; |
Christoph Hellwig | 35a8a72 | 2010-02-15 23:34:54 +0000 | [diff] [blame] | 124 | struct xlog_in_core; |
Dave Chinner | cc09c0d | 2008-11-17 17:37:10 +1100 | [diff] [blame] | 125 | struct xlog_ticket; |
Dave Chinner | 43f5efc | 2010-03-23 10:10:00 +1100 | [diff] [blame] | 126 | struct xfs_log_item; |
| 127 | struct xfs_item_ops; |
Dave Chinner | 955833c | 2010-05-14 21:41:46 +1000 | [diff] [blame] | 128 | struct xfs_trans; |
Dave Chinner | 239880e | 2013-10-23 10:50:10 +1100 | [diff] [blame] | 129 | struct xfs_log_callback; |
Christoph Hellwig | 35a8a72 | 2010-02-15 23:34:54 +0000 | [diff] [blame] | 130 | |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 131 | xfs_lsn_t xfs_log_done(struct xfs_mount *mp, |
Christoph Hellwig | 35a8a72 | 2010-02-15 23:34:54 +0000 | [diff] [blame] | 132 | struct xlog_ticket *ticket, |
| 133 | struct xlog_in_core **iclog, |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 134 | uint flags); |
Christoph Hellwig | f538d4d | 2005-11-02 10:26:59 +1100 | [diff] [blame] | 135 | int _xfs_log_force(struct xfs_mount *mp, |
Christoph Hellwig | f538d4d | 2005-11-02 10:26:59 +1100 | [diff] [blame] | 136 | uint flags, |
| 137 | int *log_forced); |
David Chinner | b911ca0 | 2008-04-10 12:24:30 +1000 | [diff] [blame] | 138 | void xfs_log_force(struct xfs_mount *mp, |
David Chinner | b911ca0 | 2008-04-10 12:24:30 +1000 | [diff] [blame] | 139 | uint flags); |
Christoph Hellwig | a14a348 | 2010-01-19 09:56:46 +0000 | [diff] [blame] | 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); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 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); |
Christoph Hellwig | 4249023 | 2008-08-13 16:49:32 +1000 | [diff] [blame] | 151 | int xfs_log_mount_finish(struct xfs_mount *mp); |
Christoph Hellwig | 09a423a | 2012-02-20 02:31:20 +0000 | [diff] [blame] | 152 | xfs_lsn_t xlog_assign_tail_lsn(struct xfs_mount *mp); |
Christoph Hellwig | 1c30462 | 2012-04-23 15:58:33 +1000 | [diff] [blame] | 153 | xfs_lsn_t xlog_assign_tail_lsn_locked(struct xfs_mount *mp); |
Christoph Hellwig | cfb7cdc | 2012-02-20 02:31:23 +0000 | [diff] [blame] | 154 | void xfs_log_space_wake(struct xfs_mount *mp); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 155 | int xfs_log_notify(struct xfs_mount *mp, |
Christoph Hellwig | 35a8a72 | 2010-02-15 23:34:54 +0000 | [diff] [blame] | 156 | struct xlog_in_core *iclog, |
Dave Chinner | 239880e | 2013-10-23 10:50:10 +1100 | [diff] [blame] | 157 | struct xfs_log_callback *callback_entry); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 158 | int xfs_log_release_iclog(struct xfs_mount *mp, |
Christoph Hellwig | 35a8a72 | 2010-02-15 23:34:54 +0000 | [diff] [blame] | 159 | struct xlog_in_core *iclog); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 160 | int xfs_log_reserve(struct xfs_mount *mp, |
| 161 | int length, |
| 162 | int count, |
Christoph Hellwig | 35a8a72 | 2010-02-15 23:34:54 +0000 | [diff] [blame] | 163 | struct xlog_ticket **ticket, |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 164 | __uint8_t clientid, |
Christoph Hellwig | 9006fb9 | 2012-02-20 02:31:31 +0000 | [diff] [blame] | 165 | bool permanent, |
Tim Shimmin | 7e9c639 | 2005-09-02 16:42:05 +1000 | [diff] [blame] | 166 | uint t_type); |
Christoph Hellwig | 9006fb9 | 2012-02-20 02:31:31 +0000 | [diff] [blame] | 167 | int xfs_log_regrant(struct xfs_mount *mp, struct xlog_ticket *tic); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 168 | int xfs_log_unmount_write(struct xfs_mount *mp); |
Christoph Hellwig | 21b699c | 2009-03-16 08:19:29 +0100 | [diff] [blame] | 169 | void xfs_log_unmount(struct xfs_mount *mp); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 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 | |
Dave Chinner | 71e330b | 2010-05-21 14:37:18 +1000 | [diff] [blame] | 175 | struct xlog_ticket *xfs_log_ticket_get(struct xlog_ticket *ticket); |
Dave Chinner | cc09c0d | 2008-11-17 17:37:10 +1100 | [diff] [blame] | 176 | void xfs_log_ticket_put(struct xlog_ticket *ticket); |
| 177 | |
Christoph Hellwig | 0244b96 | 2011-12-06 21:58:08 +0000 | [diff] [blame] | 178 | int xfs_log_commit_cil(struct xfs_mount *mp, struct xfs_trans *tp, |
Dave Chinner | 71e330b | 2010-05-21 14:37:18 +1000 | [diff] [blame] | 179 | xfs_lsn_t *commit_lsn, int flags); |
Dave Chinner | ccf7c23 | 2010-05-20 23:19:42 +1000 | [diff] [blame] | 180 | bool xfs_log_item_in_current_chkpt(struct xfs_log_item *lip); |
Dave Chinner | 71e330b | 2010-05-21 14:37:18 +1000 | [diff] [blame] | 181 | |
Dave Chinner | f661f1e | 2012-10-08 21:56:02 +1100 | [diff] [blame] | 182 | void xfs_log_work_queue(struct xfs_mount *mp); |
| 183 | void xfs_log_worker(struct work_struct *work); |
Dave Chinner | c75921a | 2012-10-08 21:56:08 +1100 | [diff] [blame] | 184 | void xfs_log_quiesce(struct xfs_mount *mp); |
Dave Chinner | f661f1e | 2012-10-08 21:56:02 +1100 | [diff] [blame] | 185 | |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 186 | #endif /* __XFS_LOG_H__ */ |