From: Vasily Averin <vvs@virtuozzo.com>
To: linux-kernel@vger.kernel.org, linux-nfs@vger.kernel.org
Cc: "J. Bruce Fields" <bfields@fieldses.org>,
Jeff Layton <jlayton@poochiereds.net>,
Scott Mayhew <smayhew@redhat.com>
Subject: [PATCH 2/2] notifiers: double register detection
Date: Wed, 21 Sep 2016 15:33:11 +0300 [thread overview]
Message-ID: <105a9bce-5539-73f1-2683-e52dba870c04@virtuozzo.com> (raw)
WARN_ON should help to detect double register of the same notifiers
Signed-off-by: Vasily Averin <vvs@virtuozzo.com>
---
kernel/notifier.c | 1 +
1 file changed, 1 insertion(+)
diff --git a/kernel/notifier.c b/kernel/notifier.c
index fd2c9ac..e02b2f0 100644
--- a/kernel/notifier.c
+++ b/kernel/notifier.c
@@ -22,6 +22,7 @@ static int notifier_chain_register(struct notifier_block **nl,
struct notifier_block *n)
{
while ((*nl) != NULL) {
+ WARN_ON((*nl) == n);
if (n->priority > (*nl)->priority)
break;
nl = &((*nl)->next);
--
1.9.1
next reply other threads:[~2016-09-21 12:34 UTC|newest]
Thread overview: 2+ messages / expand[flat|nested] mbox.gz Atom feed top
2016-09-21 12:33 Vasily Averin [this message]
2016-10-27 10:44 ` Vasily Averin
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