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 xlog_copy_iovec(struct xfs_log_iovec **vecp, uint type, void *data, int len)
36 struct xfs_log_iovec *vec = *vecp;
47 * Structure used to pass callback function and the function's argument
50 typedef struct xfs_log_callback {
51 struct xfs_log_callback *cb_next;
52 void (*cb_func)(void *, int);
57 * By comparing each component, we don't have to worry about extra
58 * endian issues in treating two 32 bit numbers as one 64 bit number
60 static inline xfs_lsn_t _lsn_cmp(xfs_lsn_t lsn1, xfs_lsn_t lsn2)
62 if (CYCLE_LSN(lsn1) != CYCLE_LSN(lsn2))
63 return (CYCLE_LSN(lsn1)<CYCLE_LSN(lsn2))? -999 : 999;
65 if (BLOCK_LSN(lsn1) != BLOCK_LSN(lsn2))
66 return (BLOCK_LSN(lsn1)<BLOCK_LSN(lsn2))? -999 : 999;
71 #define XFS_LSN_CMP(x,y) _lsn_cmp(x,y)
74 * Macros, structures, prototypes for interface to the log manager.
78 * Flags to xfs_log_done()
80 #define XFS_LOG_REL_PERM_RESERV 0x1
83 * Flags to xfs_log_force()
85 * XFS_LOG_SYNC: Synchronous force in-core log to disk
87 #define XFS_LOG_SYNC 0x1
89 /* Log manager interfaces */
96 struct xfs_log_callback;
98 xfs_lsn_t xfs_log_done(struct xfs_mount *mp,
99 struct xlog_ticket *ticket,
100 struct xlog_in_core **iclog,
102 int _xfs_log_force(struct xfs_mount *mp,
105 void xfs_log_force(struct xfs_mount *mp,
107 int _xfs_log_force_lsn(struct xfs_mount *mp,
111 void xfs_log_force_lsn(struct xfs_mount *mp,
114 int xfs_log_mount(struct xfs_mount *mp,
115 struct xfs_buftarg *log_target,
116 xfs_daddr_t start_block,
118 int xfs_log_mount_finish(struct xfs_mount *mp);
119 xfs_lsn_t xlog_assign_tail_lsn(struct xfs_mount *mp);
120 xfs_lsn_t xlog_assign_tail_lsn_locked(struct xfs_mount *mp);
121 void xfs_log_space_wake(struct xfs_mount *mp);
122 int xfs_log_notify(struct xfs_mount *mp,
123 struct xlog_in_core *iclog,
124 struct xfs_log_callback *callback_entry);
125 int xfs_log_release_iclog(struct xfs_mount *mp,
126 struct xlog_in_core *iclog);
127 int xfs_log_reserve(struct xfs_mount *mp,
130 struct xlog_ticket **ticket,
134 int xfs_log_regrant(struct xfs_mount *mp, struct xlog_ticket *tic);
135 int xfs_log_unmount_write(struct xfs_mount *mp);
136 void xfs_log_unmount(struct xfs_mount *mp);
137 int xfs_log_force_umount(struct xfs_mount *mp, int logerror);
138 int xfs_log_need_covered(struct xfs_mount *mp);
140 void xlog_iodone(struct xfs_buf *);
142 struct xlog_ticket *xfs_log_ticket_get(struct xlog_ticket *ticket);
143 void xfs_log_ticket_put(struct xlog_ticket *ticket);
145 int xfs_log_commit_cil(struct xfs_mount *mp, struct xfs_trans *tp,
146 xfs_lsn_t *commit_lsn, int flags);
147 bool xfs_log_item_in_current_chkpt(struct xfs_log_item *lip);
149 void xfs_log_work_queue(struct xfs_mount *mp);
150 void xfs_log_worker(struct work_struct *work);
151 void xfs_log_quiesce(struct xfs_mount *mp);
153 #endif /* __XFS_LOG_H__ */