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| author | Jaegeuk Kim <jaegeuk@kernel.org> | 2015-01-08 19:15:53 -0800 |
|---|---|---|
| committer | Jaegeuk Kim <jaegeuk@kernel.org> | 2015-04-10 15:07:57 -0700 |
| commit | 1abff93d01eddaab7ccdcf15f8cda4d91cbbcd9a (patch) | |
| tree | 786074cc5ef7729f9ceaf0f7dd48e9c94b7a0149 /fs/f2fs/f2fs.h | |
| parent | 8fbc418f99caf65a53f3921ac2a32a0a0af7aba2 (diff) | |
f2fs: support fs shutdown
This patch introduces a generic ioctl for fs shutdown, which was used by xfs.
If this shutdown is triggered, filesystem stops any further IOs according to the
following options.
1. FS_GOING_DOWN_FULLSYNC
: this will flush all the data and dentry blocks, and do checkpoint before
shutdown.
2. FS_GOING_DOWN_METASYNC
: this will do checkpoint before shutdown.
3. FS_GOING_DOWN_NOSYNC
: this will trigger shutdown as is.
Signed-off-by: Jaegeuk Kim <jaegeuk@kernel.org>
Diffstat (limited to 'fs/f2fs/f2fs.h')
| -rw-r--r-- | fs/f2fs/f2fs.h | 9 |
1 files changed, 9 insertions, 0 deletions
diff --git a/fs/f2fs/f2fs.h b/fs/f2fs/f2fs.h index 08fc7e0d5e4a..51d97f7b77f0 100644 --- a/fs/f2fs/f2fs.h +++ b/fs/f2fs/f2fs.h @@ -217,6 +217,15 @@ static inline bool __has_cursum_space(struct f2fs_summary_block *sum, int size, #define F2FS_IOC_RELEASE_VOLATILE_WRITE _IO(F2FS_IOCTL_MAGIC, 4) #define F2FS_IOC_ABORT_VOLATILE_WRITE _IO(F2FS_IOCTL_MAGIC, 5) +/* + * should be same as XFS_IOC_GOINGDOWN. + * Flags for going down operation used by FS_IOC_GOINGDOWN + */ +#define F2FS_IOC_SHUTDOWN _IOR('X', 125, __u32) /* Shutdown */ +#define F2FS_GOING_DOWN_FULLSYNC 0x0 /* going down with full sync */ +#define F2FS_GOING_DOWN_METASYNC 0x1 /* going down with metadata */ +#define F2FS_GOING_DOWN_NOSYNC 0x2 /* going down */ + #if defined(__KERNEL__) && defined(CONFIG_COMPAT) /* * ioctl commands in 32 bit emulation |