On Mon, Sep 13, 2021 at 07:19:28PM +0800, Xie Yongji wrote:
> 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@xxxxxxxxxxxxx>
> ---
> 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
>
Since I was just working with this file...:
Reviewed-by: Eric Biggers <ebiggers@xxxxxxxxxx>
I don't know who is taking aio fixes these days, but whoever does so probably
should take this one at the same time as mine
(https://lore.kernel.org/linux-fsdevel/20211207095726.169766-1-ebiggers@xxxxxxxxxx).
- Eric
