f2fs: add F2FS_IOC_SET_COMPRESS_OPTION ioctl

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);

Daeho Jeong committed 6 years ago

Commit e1e8deb1 parent 9e2a5f82 files · +56 −0Browse files

Showing the changes to include/uapi (1 of 2 files). Show all

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include/uapi/linux/f2fs.h+2−0

@@ -38,6 +38,8 @@ · 37 unmodified lines
38	struct f2fs_sectrim_range)	38	struct f2fs_sectrim_range)
39	#define F2FS_IOC_GET_COMPRESS_OPTION _IOR(F2FS_IOCTL_MAGIC, 21, \	39	#define F2FS_IOC_GET_COMPRESS_OPTION _IOR(F2FS_IOCTL_MAGIC, 21, \
40	struct f2fs_comp_option)	40	struct f2fs_comp_option)
		41	#define F2FS_IOC_SET_COMPRESS_OPTION _IOW(F2FS_IOCTL_MAGIC, 22, \
		42	struct f2fs_comp_option)
41		43
42	/*	44	/*
43	* should be same as XFS_IOC_GOINGDOWN.	45	* should be same as XFS_IOC_GOINGDOWN.