This is a note to let you know that I've just added the patch titled
io_uring: break iopolling on signal
to the 6.4-stable tree which can be found at:
http://www.kernel.org/git/?p=linux/kernel/git/stable/stable-queue.git;a=summary
The filename of the patch is:
io_uring-break-iopolling-on-signal.patch
and it can be found in the queue-6.4 subdirectory.
If you, or anyone else, feels it should not be added to the stable tree,
please let <stable@xxxxxxxxxxxxxxx> know about it.
>From dc314886cb3d0e4ab2858003e8de2917f8a3ccbd Mon Sep 17 00:00:00 2001
From: Pavel Begunkov <asml.silence@xxxxxxxxx>
Date: Wed, 9 Aug 2023 16:20:21 +0100
Subject: io_uring: break iopolling on signal
From: Pavel Begunkov <asml.silence@xxxxxxxxx>
commit dc314886cb3d0e4ab2858003e8de2917f8a3ccbd upstream.
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@xxxxxxxxxxxxxxx
Fixes: def596e9557c9 ("io_uring: support for IO polling")
Signed-off-by: Pavel Begunkov <asml.silence@xxxxxxxxx>
Link: https://lore.kernel.org/r/eeba551e82cad12af30c3220125eb6cb244cc94c.1691594339.git.asml.silence@xxxxxxxxx
Signed-off-by: Jens Axboe <axboe@xxxxxxxxx>
Signed-off-by: Greg Kroah-Hartman <gregkh@xxxxxxxxxxxxxxxxxxx>
---
io_uring/io_uring.c | 3 +++
1 file changed, 3 insertions(+)
--- a/io_uring/io_uring.c
+++ b/io_uring/io_uring.c
@@ -1689,6 +1689,9 @@ static int io_iopoll_check(struct io_rin
break;
nr_events += ret;
ret = 0;
+
+ if (task_sigpending(current))
+ return -EINTR;
} while (nr_events < min && !need_resched());
return ret;
Patches currently in stable-queue which might be from asml.silence@xxxxxxxxx are
queue-6.4/io_uring-fix-drain-stalls-by-invalid-sqe.patch
queue-6.4/io_uring-break-out-of-iowq-iopoll-on-teardown.patch
queue-6.4/io_uring-fix-false-positive-kasan-warnings.patch
queue-6.4/io_uring-break-iopolling-on-signal.patch
