diff options
Diffstat (limited to 'drivers/block/ll_rw_blk.c')
| -rw-r--r-- | drivers/block/ll_rw_blk.c | 14 |
1 files changed, 8 insertions, 6 deletions
diff --git a/drivers/block/ll_rw_blk.c b/drivers/block/ll_rw_blk.c index 0f64ee7d8d2..ac31ea17005 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; } /* |