Re: [f2fs-dev] [PATCH v6 2/2] f2fs: add F2FS_IOC_SET_COMPRESS_OPTION ioctl

From: Chao Yu
Date: Thu Oct 29 2020 - 22:36:50 EST


On 2020/10/30 10:27, Daeho Jeong wrote:
From: Daeho Jeong <daehojeong@xxxxxxxxxx>

Added a new F2FS_IOC_SET_COMPRESS_OPTION ioctl to change 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;

option.algorithm = 1;
option.log_cluster_size = 7;

ioctl(fd, F2FS_IOC_SET_COMPRESS_OPTION, &option);

Signed-off-by: Daeho Jeong <daehojeong@xxxxxxxxxx>

Reviewed-by: Chao Yu <yuchao0@xxxxxxxxxx>

Thanks,