io_uring: add IORING_OP_FADVISE

This adds support for doing fadvise through io_uring. We assume that WILLNEED doesn't block, but that DONTNEED may block.

Jens Axboe committed 6 years ago

Commit 4840e411 parent ba042912 files · +55 −0Browse files

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@@ -36,6 +36,7 @@ struct io_uring_sqe { · 35 unmodified lines
36	36	__u32 cancel_flags;
37	37	__u32 open_flags;
38	38	__u32 statx_flags;
	39	+ __u32 fadvise_advice;
39	40	};
40	41	__u64 user_data; /* data to be passed back at completion time */
41	42	union {
@@ -86,6 +87,7 @@ enum { · 44 unmodified lines
86	87	IORING_OP_STATX,
87	88	IORING_OP_READ,
88	89	IORING_OP_WRITE,
	90	+ IORING_OP_FADVISE,
89	91
90	92	/* this goes last, obviously */
91	93	IORING_OP_LAST,