Merge branch 'for-linus' of git://brick.kernel.dk/data/git/linux-2.6-block

1 files changed, 8 insertions, 6 deletions

diff --git a/drivers/block/ll_rw_blk.c b/drivers/block/ll_rw_blk.c
index 0f64ee7d8d27..ac31ea170058 100644
--- a/drivers/block/ll_rw_blk.c
+++ b/drivers/block/ll_rw_blk.c
@@ -2433,13 +2433,15 @@ void disk_round_stats(struct gendisk *disk)
 {
         unsigned long now = jiffies;
 
-        __disk_stat_add(disk, time_in_queue,
-                        disk->in_flight * (now - disk->stamp));
-        disk->stamp = now;
+        if (now == disk->stamp)
+                return;
 
-        if (disk->in_flight)
-                __disk_stat_add(disk, io_ticks, (now - disk->stamp_idle));
-        disk->stamp_idle = now;
+        if (disk->in_flight) {
+                __disk_stat_add(disk, time_in_queue,
+                                disk->in_flight * (now - disk->stamp));
+                __disk_stat_add(disk, io_ticks, (now - disk->stamp));
+        }
+        disk->stamp = now;
 }
 
 /*