The commit "epoll: use RCU to protect wakeup_source in epitem"
introduced the ep_pm_stay_awake_rcu function for ep_poll_callback
use, but I left it unused on accident. ep->mtx cannot be held in
ep_poll_callback, so RCU should be used here.
Signed-off-by: Eric Wong <normalper...@yhbt.net>
Cc: "Rafael J. Wysocki" <r...@sisk.pl>
Cc: Alexander Viro <v...@zeniv.linux.org.uk>
Cc: Andrew Morton <a...@linux-foundation.org>
Cc: Arve Hj�nnev�g <a...@android.com>
Cc: Davide Libenzi <davi...@xmailserver.org>
Cc: Eric Dumazet <eric.duma...@gmail.com>
Cc: NeilBrown <ne...@suse.de>
Cc: Oleg Nesterov <o...@redhat.com>
---
Oops :x
fs/eventpoll.c | 2 +-
1 file changed, 1 insertion(+), 1 deletion(-)
diff --git a/fs/eventpoll.c b/fs/eventpoll.c
index a4e4ad7..a81f0ea 100644
--- a/fs/eventpoll.c
+++ b/fs/eventpoll.c
@@ -1028,7 +1028,7 @@ static int ep_poll_callback(wait_queue_t *wait, unsigned
mode, int sync, void *k
/* If this file is already in the ready list we exit soon */
if (!ep_is_linked(&epi->rdllink)) {
list_add_tail(&epi->rdllink, &ep->rdllist);
- ep_pm_stay_awake(epi);
+ ep_pm_stay_awake_rcu(epi);
}
/*
--
Eric Wong
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