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aio: Fix incorrect usage of eventfd_signal_allowed() 

We should defer eventfd_signal() to the workqueue when
eventfd_signal_allowed() return false rather than return
true.

Fixes: b542e383d8 ("eventfd: Make signal recursion protection a task bit")
Signed-off-by: Xie Yongji <xieyongji@bytedance.com>
Link: https://lore.kernel.org/r/20210913111928.98-1-xieyongji@bytedance.com
Reviewed-by: Eric Biggers <ebiggers@google.com>
Signed-off-by: Eric Biggers <ebiggers@google.com>
This commit is contained in:
Xie Yongji 2021-09-13 19:19:28 +08:00 committed by Eric Biggers
parent 50252e4b5e
commit 4b37498653
1 changed files with 1 additions and 1 deletions
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2
fs/aio.c
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@ -1760,7 +1760,7 @@ static int aio_poll_wake(struct wait_queue_entry *wait, unsigned mode, int sync,
list_del_init(&req->wait.entry);
list_del(&iocb->ki_list);
iocb->ki_res.res = mangle_poll(mask);
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);