2 * Copyright (c) 2000-2003,2005 Silicon Graphics, Inc.
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
7 * published by the Free Software Foundation.
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.
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
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 */
28 int lv_size; /* size of allocated lv */
31 #define XFS_LOG_VEC_ORDERED (-1)
34 * Structure used to pass callback function and the function's argument
37 typedef struct xfs_log_callback {
38 struct xfs_log_callback *cb_next;
39 void (*cb_func)(void *, int);
44 * By comparing each component, we don't have to worry about extra
45 * endian issues in treating two 32 bit numbers as one 64 bit number
47 static inline xfs_lsn_t _lsn_cmp(xfs_lsn_t lsn1, xfs_lsn_t lsn2)
49 if (CYCLE_LSN(lsn1) != CYCLE_LSN(lsn2))
50 return (CYCLE_LSN(lsn1)<CYCLE_LSN(lsn2))? -999 : 999;
52 if (BLOCK_LSN(lsn1) != BLOCK_LSN(lsn2))
53 return (BLOCK_LSN(lsn1)<BLOCK_LSN(lsn2))? -999 : 999;
58 #define XFS_LSN_CMP(x,y) _lsn_cmp(x,y)
61 * Macros, structures, prototypes for interface to the log manager.
65 * Flags to xfs_log_done()
67 #define XFS_LOG_REL_PERM_RESERV 0x1
70 * Flags to xfs_log_force()
72 * XFS_LOG_SYNC: Synchronous force in-core log to disk
74 #define XFS_LOG_SYNC 0x1
76 /* Log manager interfaces */
83 struct xfs_log_callback;
85 xfs_lsn_t xfs_log_done(struct xfs_mount *mp,
86 struct xlog_ticket *ticket,
87 struct xlog_in_core **iclog,
89 int _xfs_log_force(struct xfs_mount *mp,
92 void xfs_log_force(struct xfs_mount *mp,
94 int _xfs_log_force_lsn(struct xfs_mount *mp,
98 void xfs_log_force_lsn(struct xfs_mount *mp,
101 int xfs_log_mount(struct xfs_mount *mp,
102 struct xfs_buftarg *log_target,
103 xfs_daddr_t start_block,
105 int xfs_log_mount_finish(struct xfs_mount *mp);
106 xfs_lsn_t xlog_assign_tail_lsn(struct xfs_mount *mp);
107 xfs_lsn_t xlog_assign_tail_lsn_locked(struct xfs_mount *mp);
108 void xfs_log_space_wake(struct xfs_mount *mp);
109 int xfs_log_notify(struct xfs_mount *mp,
110 struct xlog_in_core *iclog,
111 struct xfs_log_callback *callback_entry);
112 int xfs_log_release_iclog(struct xfs_mount *mp,
113 struct xlog_in_core *iclog);
114 int xfs_log_reserve(struct xfs_mount *mp,
117 struct xlog_ticket **ticket,
121 int xfs_log_regrant(struct xfs_mount *mp, struct xlog_ticket *tic);
122 int xfs_log_unmount_write(struct xfs_mount *mp);
123 void xfs_log_unmount(struct xfs_mount *mp);
124 int xfs_log_force_umount(struct xfs_mount *mp, int logerror);
125 int xfs_log_need_covered(struct xfs_mount *mp);
127 void xlog_iodone(struct xfs_buf *);
129 struct xlog_ticket *xfs_log_ticket_get(struct xlog_ticket *ticket);
130 void xfs_log_ticket_put(struct xlog_ticket *ticket);
132 int xfs_log_commit_cil(struct xfs_mount *mp, struct xfs_trans *tp,
133 xfs_lsn_t *commit_lsn, int flags);
134 bool xfs_log_item_in_current_chkpt(struct xfs_log_item *lip);
136 void xfs_log_work_queue(struct xfs_mount *mp);
137 void xfs_log_worker(struct work_struct *work);
138 void xfs_log_quiesce(struct xfs_mount *mp);
140 #endif /* __XFS_LOG_H__ */