Commit | Line | Data |
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1da177e4 | 1 | /* |
b83bd138 | 2 | * Copyright (c) 2000-2006 Silicon Graphics, Inc. |
7b718769 | 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_VFS_H__ | |
19 | #define __XFS_VFS_H__ | |
20 | ||
21 | #include <linux/vfs.h> | |
22 | #include "xfs_fs.h" | |
23 | ||
b83bd138 | 24 | struct bhv_vfs; |
0a74cd19 | 25 | struct inode; |
8285fb58 | 26 | |
1da177e4 | 27 | struct fid; |
1da177e4 | 28 | struct cred; |
1da177e4 LT |
29 | struct seq_file; |
30 | struct super_block; | |
739bfb2a | 31 | struct xfs_inode; |
745f6919 | 32 | struct xfs_mount; |
1da177e4 LT |
33 | struct xfs_mount_args; |
34 | ||
8285fb58 | 35 | typedef struct kstatfs bhv_statvfs_t; |
1da177e4 | 36 | |
b83bd138 | 37 | typedef struct bhv_vfs_sync_work { |
1da177e4 | 38 | struct list_head w_list; |
b83bd138 | 39 | struct bhv_vfs *w_vfs; |
1da177e4 | 40 | void *w_data; /* syncer routine argument */ |
b83bd138 NS |
41 | void (*w_syncer)(struct bhv_vfs *, void *); |
42 | } bhv_vfs_sync_work_t; | |
1da177e4 | 43 | |
b83bd138 | 44 | typedef struct bhv_vfs { |
745f6919 | 45 | struct xfs_mount *vfs_mount; |
1da177e4 LT |
46 | struct super_block *vfs_super; /* generic superblock pointer */ |
47 | struct task_struct *vfs_sync_task; /* generalised sync thread */ | |
b83bd138 | 48 | bhv_vfs_sync_work_t vfs_sync_work; /* work item for VFS_SYNC */ |
1da177e4 LT |
49 | struct list_head vfs_sync_list; /* sync thread work item list */ |
50 | spinlock_t vfs_sync_lock; /* work item list lock */ | |
b83bd138 | 51 | int vfs_sync_seq; /* sync thread generation no. */ |
1da177e4 | 52 | wait_queue_head_t vfs_wait_single_sync_task; |
b83bd138 | 53 | } bhv_vfs_t; |
1da177e4 | 54 | |
1da177e4 LT |
55 | #define SYNC_ATTR 0x0001 /* sync attributes */ |
56 | #define SYNC_CLOSE 0x0002 /* close file system down */ | |
57 | #define SYNC_DELWRI 0x0004 /* look at delayed writes */ | |
58 | #define SYNC_WAIT 0x0008 /* wait for i/o to complete */ | |
59 | #define SYNC_BDFLUSH 0x0010 /* BDFLUSH is calling -- don't block */ | |
60 | #define SYNC_FSDATA 0x0020 /* flush fs data (e.g. superblocks) */ | |
61 | #define SYNC_REFCACHE 0x0040 /* prune some of the nfs ref cache */ | |
62 | #define SYNC_REMOUNT 0x0080 /* remount readonly, no dummy LRs */ | |
3c0dc77b | 63 | #define SYNC_IOWAIT 0x0100 /* wait for all I/O to complete */ |
92821e2b | 64 | #define SYNC_SUPER 0x0200 /* flush superblock to disk */ |
1da177e4 | 65 | |
516b2e7c DC |
66 | /* |
67 | * When remounting a filesystem read-only or freezing the filesystem, | |
68 | * we have two phases to execute. This first phase is syncing the data | |
69 | * before we quiesce the fielsystem, and the second is flushing all the | |
70 | * inodes out after we've waited for all the transactions created by | |
71 | * the first phase to complete. The second phase uses SYNC_INODE_QUIESCE | |
72 | * to ensure that the inodes are written to their location on disk | |
73 | * rather than just existing in transactions in the log. This means | |
74 | * after a quiesce there is no log replay required to write the inodes | |
75 | * to disk (this is the main difference between a sync and a quiesce). | |
76 | */ | |
77 | #define SYNC_DATA_QUIESCE (SYNC_DELWRI|SYNC_FSDATA|SYNC_WAIT|SYNC_IOWAIT) | |
78 | #define SYNC_INODE_QUIESCE (SYNC_REMOUNT|SYNC_ATTR|SYNC_WAIT) | |
79 | ||
7d04a335 NS |
80 | #define SHUTDOWN_META_IO_ERROR 0x0001 /* write attempt to metadata failed */ |
81 | #define SHUTDOWN_LOG_IO_ERROR 0x0002 /* write attempt to the log failed */ | |
82 | #define SHUTDOWN_FORCE_UMOUNT 0x0004 /* shutdown from a forced unmount */ | |
83 | #define SHUTDOWN_CORRUPT_INCORE 0x0008 /* corrupt in-memory data structures */ | |
84 | #define SHUTDOWN_REMOTE_REQ 0x0010 /* shutdown came from remote cell */ | |
85 | #define SHUTDOWN_DEVICE_REQ 0x0020 /* failed all paths to the device */ | |
86 | ||
34327e13 NS |
87 | #define vfs_test_for_freeze(vfs) ((vfs)->vfs_super->s_frozen) |
88 | #define vfs_wait_for_freeze(vfs,l) vfs_check_frozen((vfs)->vfs_super, (l)) | |
89 | ||
b83bd138 NS |
90 | extern bhv_vfs_t *vfs_allocate(struct super_block *); |
91 | extern bhv_vfs_t *vfs_from_sb(struct super_block *); | |
92 | extern void vfs_deallocate(bhv_vfs_t *); | |
1da177e4 | 93 | |
1da177e4 | 94 | #endif /* __XFS_VFS_H__ */ |