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[1/2] io_uring/net: fix sendzc lazy wake polling

Message ID 5b360fb352d91e3aec751d75c87dfb4753a084ee.1714488419.git.asml.silence@gmail.com (mailing list archive)
State New
Headers show
Series LAZY_WAKE misuse fixes | expand

Commit Message

Pavel Begunkov April 30, 2024, 3:42 p.m. UTC 
SEND[MSG]_ZC produces multiple CQEs via notifications, LAZY_WAKE doesn't
handle it and so disable LAZY_WAKE for sendzc polling. It should be
fine, sends are not likely to be polled in the first place.

Fixes: 6ce4a93dbb5b ("io_uring/poll: use IOU_F_TWQ_LAZY_WAKE for wakeups")
Signed-off-by: Pavel Begunkov <asml.silence@gmail.com>
---
 io_uring/net.c | 1 +
 1 file changed, 1 insertion(+)
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Patch

diff --git a/io_uring/net.c b/io_uring/net.c
index 51c41d771c50..503debecad32 100644
--- a/io_uring/net.c
+++ b/io_uring/net.c
@@ -1198,6 +1198,7 @@  int io_send_zc_prep(struct io_kiocb *req, const struct io_uring_sqe *sqe)
 	struct io_kiocb *notif;
 
 	zc->done_io = 0;
+	req->flags |= REQ_F_POLL_NO_LAZY;
 
 	if (unlikely(READ_ONCE(sqe->__pad2[0]) || READ_ONCE(sqe->addr3)))
 		return -EINVAL;