[PATCH v2 ratelimit 10/14] ratelimit: Allow zero ->burst to disable ratelimiting

[Paul E. McKenney]

If ->burst is zero, rate-limiting will be applied unconditionally.
Therefore, make it low overhead.

Signed-off-by: Paul E. McKenney <paulmck@xxxxxxxxxx>
Cc: Andrew Morton <akpm@xxxxxxxxxxxxxxxxxxxx>
Cc: Kuniyuki Iwashima <kuniyu@xxxxxxxxxx>
Cc: Mateusz Guzik <mjguzik@xxxxxxxxx>
Cc: Petr Mladek <pmladek@xxxxxxxx>
Cc: Steven Rostedt <rostedt@xxxxxxxxxxx>
Cc: John Ogness <john.ogness@xxxxxxxxxxxxx>
Cc: Sergey Senozhatsky <senozhatsky@xxxxxxxxxxxx>
---
 lib/ratelimit.c | 2 +-
 1 file changed, 1 insertion(+), 1 deletion(-)

diff --git a/lib/ratelimit.c b/lib/ratelimit.c
index 90c9fe57eb422..04f16b8e24575 100644
--- a/lib/ratelimit.c
+++ b/lib/ratelimit.c
@@ -35,7 +35,7 @@ int ___ratelimit(struct ratelimit_state *rs, const char *func)
 	unsigned long flags;
 	int ret;
 
-	if (!interval)
+	if (!interval || !burst)
 		return 1;
 
 	/*
-- 
2.40.1