f2fs: add F2FS_IOC_DECOMPRESS_FILE and F2FS_IOC_COMPRESS_FILE

Added two ioctl to decompress/compress explicitly the compression enabled file in "compress_mode=user" mount option. Using these two ioctls, the users can make a control of compression and decompression of their files.

Daeho Jeong committed 5 years ago

Commit 5fdb3221 parent 602a16d2 files · +187 −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

@@ -40,6 +40,8 @@ · 39 unmodified lines
40	struct f2fs_comp_option)	40	struct f2fs_comp_option)
41	#define F2FS_IOC_SET_COMPRESS_OPTION _IOW(F2FS_IOCTL_MAGIC, 22, \	41	#define F2FS_IOC_SET_COMPRESS_OPTION _IOW(F2FS_IOCTL_MAGIC, 22, \
42	struct f2fs_comp_option)	42	struct f2fs_comp_option)
		43	#define F2FS_IOC_DECOMPRESS_FILE _IO(F2FS_IOCTL_MAGIC, 23)
		44	#define F2FS_IOC_COMPRESS_FILE _IO(F2FS_IOCTL_MAGIC, 24)
43		45
44	/*	46	/*
45	* should be same as XFS_IOC_GOINGDOWN.	47	* should be same as XFS_IOC_GOINGDOWN.