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io_uring: add IORING_OP_MADVISE

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This adds support for doing madvise(2) through io_uring. We assume that
any operation can block, and hence punt everything async. This could be
improved, but hard to make bullet proof. The async punt ensures it's
safe.

Reviewed-by: Pavel Begunkov <asml.silence@gmail.com>
Signed-off-by: Jens Axboe <axboe@kernel.dk>
This commit is contained in:
Jens Axboe 2019-12-25 22:18:28 -07:00
parent db08ca2525
commit c1ca757bd6
2 changed files with 60 additions and 0 deletions
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include/uapi/linux/io_uring.h
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@ -88,6 +88,7 @@ enum {
IORING_OP_READ,
IORING_OP_WRITE,
IORING_OP_FADVISE,
IORING_OP_MADVISE,
/* this goes last, obviously */
IORING_OP_LAST,