From: Xie Yongji <xieyongji@bytedance.com>
To: bcrl@kvack.org, viro@zeniv.linux.org.uk, tglx@linutronix.de,
axboe@kernel.dk
Cc: linux-aio@kvack.org, linux-fsdevel@vger.kernel.org,
linux-kernel@vger.kernel.org
Subject: [PATCH] aio: Fix incorrect usage of eventfd_signal_allowed()
Date: Mon, 13 Sep 2021 19:19:28 +0800 [thread overview]
Message-ID: <20210913111928.98-1-xieyongji@bytedance.com> (raw)
We should defer eventfd_signal() to the workqueue when
eventfd_signal_allowed() return false rather than return
true.
Fixes: b542e383d8c0 ("eventfd: Make signal recursion protection a task bit")
Signed-off-by: Xie Yongji <xieyongji@bytedance.com>
---
fs/aio.c | 2 +-
1 file changed, 1 insertion(+), 1 deletion(-)
diff --git a/fs/aio.c b/fs/aio.c
index 51b08ab01dff..8822e3ed4566 100644
--- a/fs/aio.c
+++ b/fs/aio.c
@@ -1695,7 +1695,7 @@ static int aio_poll_wake(struct wait_queue_entry *wait, unsigned mode, int sync,
list_del(&iocb->ki_list);
iocb->ki_res.res = mangle_poll(mask);
req->done = true;
- if (iocb->ki_eventfd && eventfd_signal_allowed()) {
+ if (iocb->ki_eventfd && !eventfd_signal_allowed()) {
iocb = NULL;
INIT_WORK(&req->work, aio_poll_put_work);
schedule_work(&req->work);
--
2.11.0
next reply other threads:[~2021-09-13 11:20 UTC|newest]
Thread overview: 7+ messages / expand[flat|nested] mbox.gz Atom feed top
2021-09-13 11:19 Xie Yongji [this message]
2021-09-14 12:46 ` [PATCH] aio: Fix incorrect usage of eventfd_signal_allowed() Thomas Gleixner
2021-11-14 7:15 ` Yongji Xie
2021-12-07 11:38 ` Yongji Xie
2021-12-07 23:33 ` Eric Biggers
2021-12-10 18:53 ` Eric Biggers
2021-12-12 8:07 ` Yongji Xie
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