From: Yong Zhang <yong.zhang@windriver.com>
Date: Tue, 6 Apr 2010 21:35:03 +0000 (-0700)
Subject: ratelimit: fix the return value when __ratelimit() fails to acquire the lock
X-Git-Tag: v2.6.34-rc4~37
X-Git-Url: http://review.tizen.org/git/?a=commitdiff_plain;h=57119c34e53bbb8d244c3ff1335ef5145768538f;p=platform%2Fkernel%2Flinux-3.10.git

ratelimit: fix the return value when __ratelimit() fails to acquire the lock

The log of commit edaac8e3167501cda336231d00611bf59c164346 ("ratelimit:
Fix/allow use in atomic contexts"), indicates that we want to suppress the
callback when the trylock fails.

Signed-off-by: Yong Zhang <yong.zhang@windriver.com>
Cc: Ingo Molnar <mingo@elte.hu>
Cc: Christian Borntraeger <borntraeger@de.ibm.com>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
---

diff --git a/lib/ratelimit.c b/lib/ratelimit.c
index b4cd24f..027a03f 100644
--- a/lib/ratelimit.c
+++ b/lib/ratelimit.c
@@ -40,7 +40,7 @@ int ___ratelimit(struct ratelimit_state *rs, const char *func)
 	 * the entity that is holding the lock already:
 	 */
 	if (!spin_trylock_irqsave(&rs->lock, flags))
-		return 1;
+		return 0;
 
 	if (!rs->begin)
 		rs->begin = jiffies;