f2fs: add ioctl to get IO priority hint

This patch adds an ioctl to give a per-file priority hint to attach REQ_PRIO.

Jaegeuk Kim committed 1 year ago

Commit 5f95c181 parent 4f91f074 files · +34 −0Browse files

Showing the changes to include/uapi/linux (1 of 4 files). Show all

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@@ -44,6 +44,7 @@ · 43 unmodified lines
44	44	#define F2FS_IOC_COMPRESS_FILE _IO(F2FS_IOCTL_MAGIC, 24)
45	45	#define F2FS_IOC_START_ATOMIC_REPLACE _IO(F2FS_IOCTL_MAGIC, 25)
46	46	#define F2FS_IOC_GET_DEV_ALIAS_FILE _IOR(F2FS_IOCTL_MAGIC, 26, __u32)
	47	+#define F2FS_IOC_IO_PRIO _IOW(F2FS_IOCTL_MAGIC, 27, __u32)
47	48
48	49	/*
49	50	* should be same as XFS_IOC_GOINGDOWN.
@@ -63,6 +64,12 @@ · 13 unmodified lines
63	64	#define F2FS_TRIM_FILE_ZEROOUT 0x2 /* zero out */
64	65	#define F2FS_TRIM_FILE_MASK 0x3
65	66
	67	+/* for F2FS_IOC_IO_PRIO */
	68	+enum {
	69	+ F2FS_IOPRIO_WRITE = 1, /* high write priority */
	70	+ F2FS_IOPRIO_MAX,
	71	+};
	72	+
66	73	struct f2fs_gc_range {
67	74	__u32 sync;
68	75	__u64 start;