diff options
| author | Dylan Yudaken <dylany@meta.com> | 2022-12-15 21:41:38 +0300 |
|---|---|---|
| committer | Jens Axboe <axboe@kernel.dk> | 2022-12-15 21:59:29 +0300 |
| commit | 44a84da45272b3f4beb90025a64cfbde18f1aef0 (patch) | |
| tree | 7abe87073145288723fd115c97901a10d975bbed /io_uring | |
| parent | a8cf95f93610eb8282f8b6d0117ba78b74588d6b (diff) | |
| download | linux-44a84da45272b3f4beb90025a64cfbde18f1aef0.tar.xz | |
io_uring: use call_rcu_hurry if signaling an eventfd
io_uring uses call_rcu in the case it needs to signal an eventfd as a
result of an eventfd signal, since recursing eventfd signals are not
allowed. This should be calling the new call_rcu_hurry API to not delay
the signal.
Signed-off-by: Dylan Yudaken <dylany@meta.com>
Cc: Joel Fernandes (Google) <joel@joelfernandes.org>
Cc: Paul E. McKenney <paulmck@kernel.org>
Acked-by: Paul E. McKenney <paulmck@kernel.org>
Reviewed-by: Joel Fernandes (Google) <joel@joelfernandes.org>
Link: https://lore.kernel.org/r/20221215184138.795576-1-dylany@meta.com
Signed-off-by: Jens Axboe <axboe@kernel.dk>
Diffstat (limited to 'io_uring')
| -rw-r--r-- | io_uring/io_uring.c | 2 |
1 files changed, 1 insertions, 1 deletions
diff --git a/io_uring/io_uring.c b/io_uring/io_uring.c index 4601e48a173d..16a323a9ff70 100644 --- a/io_uring/io_uring.c +++ b/io_uring/io_uring.c @@ -538,7 +538,7 @@ static void io_eventfd_signal(struct io_ring_ctx *ctx) } else { atomic_inc(&ev_fd->refs); if (!atomic_fetch_or(BIT(IO_EVENTFD_OP_SIGNAL_BIT), &ev_fd->ops)) - call_rcu(&ev_fd->rcu, io_eventfd_ops); + call_rcu_hurry(&ev_fd->rcu, io_eventfd_ops); else atomic_dec(&ev_fd->refs); } |