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| author |  Chao Yu <yuchao0@huawei.com>
| 2020-03-06 14:35:33 +0800 |
|---|---|---|
| committer |  Jaegeuk Kim <jaegeuk@kernel.org>
| 2020-05-11 20:37:12 -0700 |
| commit | c75488fb4d82b697f381f855bf5b16779df440aa (patch) | |
| tree | ac6b83bb0d4c511b543def10047c6d3f4c5b2964 /fs/f2fs/f2fs.h | |
| parent | f2fs: Avoid double lock for cp_rwsem during checkpoint (diff) | |
| download | linux-c75488fb4d82b697f381f855bf5b16779df440aa.tar.gz linux-c75488fb4d82b697f381f855bf5b16779df440aa.tar.bz2 linux-c75488fb4d82b697f381f855bf5b16779df440aa.zip | |
f2fs: introduce F2FS_IOC_RESERVE_COMPRESS_BLOCKS
This patch introduces a new ioctl to rollback all compress inode
status:
- add reserved blocks in dnode blocks
- increase i_compr_blocks, i_blocks, total_valid_block_count
- remove immutable flag
Then compress inode can be restored to support overwrite
functionality again.
Signee-off-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 7f3d259e7e37..1d96f733b1b7 100644 --- a/fs/f2fs/f2fs.h +++ b/fs/f2fs/f2fs.h @@ -430,6 +430,8 @@ static inline bool __has_cursum_space(struct f2fs_journal *journal, #define F2FS_IOC_GET_COMPRESS_BLOCKS _IOR(F2FS_IOCTL_MAGIC, 17, __u64) #define F2FS_IOC_RELEASE_COMPRESS_BLOCKS \ _IOR(F2FS_IOCTL_MAGIC, 18, __u64) +#define F2FS_IOC_RESERVE_COMPRESS_BLOCKS \ + _IOR(F2FS_IOCTL_MAGIC, 19, __u64) #define F2FS_IOC_GET_VOLUME_NAME FS_IOC_GETFSLABEL #define F2FS_IOC_SET_VOLUME_NAME FS_IOC_SETFSLABEL |