[PATCH] Fix early __might_sleep() calls

From: Roger Luethi <rl@hellgate.ch>

__might_sleep prints warnings only after jiffies wrap (typically after 5
minutes of uptime).

diff --git a/kernel/sched.c b/kernel/sched.c
index 3b83f89088ea5d66e2b3cc75d114a8f70da730b7..afdac563aed8af6286a05071203f6b9a0c4e8360 100644 (file)
--- a/kernel/sched.c
+++ b/kernel/sched.c
@@ -2849,7 +2849,7 @@ void __might_sleep(char *file, int line)
        static unsigned long prev_jiffy;        /* ratelimiting */
 
        if (in_atomic() || irqs_disabled()) {
-               if (time_before(jiffies, prev_jiffy + HZ))
+               if (time_before(jiffies, prev_jiffy + HZ) && prev_jiffy)
                        return;
                prev_jiffy = jiffies;
                printk(KERN_ERR "Debug: sleeping function called from invalid"