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authorAnton Vorontsov <cbouatmailru@gmail.com>2010-04-26 21:56:19 +0400
committerAnton Vorontsov <cbouatmailru@gmail.com>2010-04-26 21:56:19 +0400
commit8ef1bb539203629f77a61976e4f25415e1083bff (patch)
tree4fee25aca0928f112716fb02d27b1b355d0843b4 /lib/ratelimit.c
parenta3bcbbee83f55cbaec9b2ad748e7300c7feb2192 (diff)
parentb91ce4d14a21fc04d165be30319541e0f9204f15 (diff)
Merge branch 'master' of git://git.kernel.org/pub/scm/linux/kernel/git/torvalds/linux-2.6
Diffstat (limited to 'lib/ratelimit.c')
-rw-r--r--lib/ratelimit.c11
1 files changed, 8 insertions, 3 deletions
diff --git a/lib/ratelimit.c b/lib/ratelimit.c
index 09f5ce1810d..027a03f4c56 100644
--- a/lib/ratelimit.c
+++ b/lib/ratelimit.c
@@ -16,9 +16,14 @@
/*
* __ratelimit - rate limiting
* @rs: ratelimit_state data
+ * @func: name of calling function
*
- * This enforces a rate limit: not more than @rs->ratelimit_burst callbacks
- * in every @rs->ratelimit_jiffies
+ * This enforces a rate limit: not more than @rs->burst callbacks
+ * in every @rs->interval
+ *
+ * RETURNS:
+ * 0 means callbacks will be suppressed.
+ * 1 means go ahead and do it.
*/
int ___ratelimit(struct ratelimit_state *rs, const char *func)
{
@@ -35,7 +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;