2 * Copyright (c) 2000-2006 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
21 #include <linux/vfs.h>
33 struct xfs_mount_args;
35 typedef struct kstatfs bhv_statvfs_t;
37 typedef struct bhv_vfs_sync_work {
38 struct list_head w_list;
39 struct xfs_mount *w_mount;
40 void *w_data; /* syncer routine argument */
41 void (*w_syncer)(struct xfs_mount *, void *);
42 } bhv_vfs_sync_work_t;
44 typedef struct bhv_vfs {
45 struct xfs_mount *vfs_mount;
46 struct super_block *vfs_super; /* generic superblock pointer */
49 #define SYNC_ATTR 0x0001 /* sync attributes */
50 #define SYNC_CLOSE 0x0002 /* close file system down */
51 #define SYNC_DELWRI 0x0004 /* look at delayed writes */
52 #define SYNC_WAIT 0x0008 /* wait for i/o to complete */
53 #define SYNC_BDFLUSH 0x0010 /* BDFLUSH is calling -- don't block */
54 #define SYNC_FSDATA 0x0020 /* flush fs data (e.g. superblocks) */
55 #define SYNC_REFCACHE 0x0040 /* prune some of the nfs ref cache */
56 #define SYNC_REMOUNT 0x0080 /* remount readonly, no dummy LRs */
57 #define SYNC_IOWAIT 0x0100 /* wait for all I/O to complete */
58 #define SYNC_SUPER 0x0200 /* flush superblock to disk */
61 * When remounting a filesystem read-only or freezing the filesystem,
62 * we have two phases to execute. This first phase is syncing the data
63 * before we quiesce the fielsystem, and the second is flushing all the
64 * inodes out after we've waited for all the transactions created by
65 * the first phase to complete. The second phase uses SYNC_INODE_QUIESCE
66 * to ensure that the inodes are written to their location on disk
67 * rather than just existing in transactions in the log. This means
68 * after a quiesce there is no log replay required to write the inodes
69 * to disk (this is the main difference between a sync and a quiesce).
71 #define SYNC_DATA_QUIESCE (SYNC_DELWRI|SYNC_FSDATA|SYNC_WAIT|SYNC_IOWAIT)
72 #define SYNC_INODE_QUIESCE (SYNC_REMOUNT|SYNC_ATTR|SYNC_WAIT)
74 #define SHUTDOWN_META_IO_ERROR 0x0001 /* write attempt to metadata failed */
75 #define SHUTDOWN_LOG_IO_ERROR 0x0002 /* write attempt to the log failed */
76 #define SHUTDOWN_FORCE_UMOUNT 0x0004 /* shutdown from a forced unmount */
77 #define SHUTDOWN_CORRUPT_INCORE 0x0008 /* corrupt in-memory data structures */
78 #define SHUTDOWN_REMOTE_REQ 0x0010 /* shutdown came from remote cell */
79 #define SHUTDOWN_DEVICE_REQ 0x0020 /* failed all paths to the device */
81 #define vfs_test_for_freeze(vfs) ((vfs)->vfs_super->s_frozen)
82 #define vfs_wait_for_freeze(vfs,l) vfs_check_frozen((vfs)->vfs_super, (l))
84 extern bhv_vfs_t *vfs_allocate(struct super_block *);
85 extern bhv_vfs_t *vfs_from_sb(struct super_block *);
86 extern void vfs_deallocate(bhv_vfs_t *);
88 #endif /* __XFS_VFS_H__ */