[PATCH 1/1] io_uring: break iopolling on signal

From: Pavel Begunkov <asml.silence@gmail.com>
To: io-uring@vger.kernel.org
Cc: Jens Axboe <axboe@kernel.dk>, asml.silence@gmail.com
Subject: [PATCH 1/1] io_uring: break iopolling on signal
Date: Wed,  9 Aug 2023 16:20:21 +0100	[thread overview]
Message-ID: <eeba551e82cad12af30c3220125eb6cb244cc94c.1691594339.git.asml.silence@gmail.com> (raw)

Don't keep spinning iopoll with a signal set. It'll eventually return
back, e.g. by virtue of need_resched(), but it's not a nice user
experience.

Cc: stable@vger.kernel.org
Fixes: def596e9557c9 ("io_uring: support for IO polling")
Signed-off-by: Pavel Begunkov <asml.silence@gmail.com>
---
 io_uring/io_uring.c | 3 +++
 1 file changed, 3 insertions(+)

diff --git a/io_uring/io_uring.c b/io_uring/io_uring.c
index f32092d90960..1810cf719a02 100644
--- a/io_uring/io_uring.c
+++ b/io_uring/io_uring.c
@@ -1684,6 +1684,9 @@ static int io_iopoll_check(struct io_ring_ctx *ctx, long min)
 			break;
 		nr_events += ret;
 		ret = 0;
+
+		if (task_sigpending(current))
+			return -EINTR;
 	} while (nr_events < min && !need_resched());
 
 	return ret;
-- 
2.41.0

