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authorDylan Yudaken <dylany@meta.com>2022-12-15 21:41:38 +0300
committerJens Axboe <axboe@kernel.dk>2022-12-15 21:59:29 +0300
commit44a84da45272b3f4beb90025a64cfbde18f1aef0 (patch)
tree7abe87073145288723fd115c97901a10d975bbed /io_uring
parenta8cf95f93610eb8282f8b6d0117ba78b74588d6b (diff)
downloadlinux-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.c2
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);
}