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(parent: fa4320c) | patch
f2fs: add F2FS_IOC_GET_COMPRESS_OPTION ioctl
authorDaeho Jeong <daehojeong@google.com>
Fri, 30 Oct 2020 04:10:34 +0000 (13:10 +0900)
committerJaegeuk Kim <jaegeuk@kernel.org>
Tue, 3 Nov 2020 01:34:00 +0000 (17:34 -0800)
commit9e2a5f8cfb4d9371783e21e27bba4338401f1260
tree269020f8682cd2626b966be54623b4bb9a72466ftree | snapshot
parentfa4320cefb8537a70cc28c55d311a1f569697cd3commit | diff
f2fs: add F2FS_IOC_GET_COMPRESS_OPTION ioctl

Added a new F2FS_IOC_GET_COMPRESS_OPTION ioctl to get file compression
option of a file.

struct f2fs_comp_option {
    u8 algorithm;         => compression algorithm
                          => 0:lzo, 1:lz4, 2:zstd, 3:lzorle
    u8 log_cluster_size;  => log scale cluster size
                          => 2 ~ 8
};

struct f2fs_comp_option option;

ioctl(fd, F2FS_IOC_GET_COMPRESS_OPTION, &option);

Signed-off-by: Daeho Jeong <daehojeong@google.com>
Signed-off-by: Jaegeuk Kim <jaegeuk@kernel.org>
fs/f2fs/file.c diff | blob | history
include/uapi/linux/f2fs.h diff | blob | history
Domain: System / Kernel;