f2fs_io: add compress/decompress commands

Added new commands, compress and decompress, to support
F2FS_IOC_COMPRESS_FILE and F2FS_IOC_DECOMPRESS_FILE.

Signed-off-by: Daeho Jeong <daehojeong@google.com>
Reviewed-by: Chao Yu <yuchao0@huawei.com>
Signed-off-by: Jaegeuk Kim <jaegeuk@kernel.org>
2 files changed