diff options
| author | Jaegeuk Kim <jaegeuk@kernel.org> | 2017-07-21 12:58:59 -0700 |
|---|---|---|
| committer | Jaegeuk Kim <jaegeuk@kernel.org> | 2017-07-31 16:48:28 -0700 |
| commit | e65ef20781cbfcbfe2d62ce37e028964bc34b313 (patch) | |
| tree | 7b5d53d5faac82afecd0f924d4578a0c26e26514 /fs/f2fs/f2fs.h | |
| parent | dc6febb6bcec7ff1b4a4d306411013b5f648f27e (diff) | |
f2fs: add ioctl to expose current features
This patch adds an ioctl to provide feature information to user.
For exapmle, SQLite can use this ioctl to detect whether f2fs support atomic
write or not.
Reviewed-by: Chao Yu <yuchao0@huawei.com>
Signed-off-by: Jaegeuk Kim <jaegeuk@kernel.org>
Diffstat (limited to 'fs/f2fs/f2fs.h')
| -rw-r--r-- | fs/f2fs/f2fs.h | 2 |
1 files changed, 2 insertions, 0 deletions
diff --git a/fs/f2fs/f2fs.h b/fs/f2fs/f2fs.h index 859ff4265c34..f2937986d73c 100644 --- a/fs/f2fs/f2fs.h +++ b/fs/f2fs/f2fs.h @@ -112,6 +112,7 @@ struct f2fs_mount_info { #define F2FS_FEATURE_ENCRYPT 0x0001 #define F2FS_FEATURE_BLKZONED 0x0002 +#define F2FS_FEATURE_ATOMIC_WRITE 0x0004 #define F2FS_HAS_FEATURE(sb, mask) \ ((F2FS_SB(sb)->raw_super->feature & cpu_to_le32(mask)) != 0) @@ -308,6 +309,7 @@ static inline bool __has_cursum_space(struct f2fs_journal *journal, struct f2fs_flush_device) #define F2FS_IOC_GARBAGE_COLLECT_RANGE _IOW(F2FS_IOCTL_MAGIC, 11, \ struct f2fs_gc_range) +#define F2FS_IOC_GET_FEATURES _IOR(F2FS_IOCTL_MAGIC, 12, __u32) #define F2FS_IOC_SET_ENCRYPTION_POLICY FS_IOC_SET_ENCRYPTION_POLICY #define F2FS_IOC_GET_ENCRYPTION_POLICY FS_IOC_GET_ENCRYPTION_POLICY |