Commit d59bd748 authored Sep 28, 2022 by Jens Axboe

io_uring/poll: disable level triggered poll



Stefan reports that there are issues with the level triggered
notification. Since we're late in the cycle, and it was introduced for
the 6.0 release, just disable it at prep time and we can bring this
back when Samba is happy with it.

Reported-by: Stefan Metzmacher <metze@samba.org>
Reviewed-by: Stefan Metzmacher <metze@samba.org>
Signed-off-by: Jens Axboe <axboe@kernel.dk>

parent 7cae596b

io_uring/poll.c

+1 −1

Original line number	Diff line number	Diff line
		@@ -857,7 +857,7 @@ int io_poll_add_prep(struct io_kiocb req, const struct io_uring_sqe sqe)
		if (sqe->buf_index \|\| sqe->off \|\| sqe->addr)
		return -EINVAL;
		flags = READ_ONCE(sqe->len);
		if (flags & ~(IORING_POLL_ADD_MULTI\|IORING_POLL_ADD_LEVEL))
		if (flags & ~IORING_POLL_ADD_MULTI)
		return -EINVAL;
		if ((flags & IORING_POLL_ADD_MULTI) && (req->flags & REQ_F_CQE_SKIP))
		return -EINVAL;