Techwizz/kernel-fxtec-pro1x
1
0
Fork 0
Code Issues Pull requests Projects Releases Packages Wiki Activity

Following the same idea, it occurs to me that we should only update

Browse source 
disk stat when "now" is different from disk->stamp.  Otherwise, we
are again needlessly adding zero to the stats.

Signed-off-by: Ken Chen <kenneth.w.chen@intel.com>
Signed-off-by: Jens Axboe <axboe@suse.de>
This commit is contained in:
Chen, Kenneth W 2005-10-13 21:49:29 +02:00 committed by Jens Axboe
parent 20e5c81fcf
commit b2982649ce
1 changed files with 3 additions and 0 deletions
Show stats Download patch file Download diff file Expand all files Collapse all files

3
drivers/block/ll_rw_blk.c
View file

@ -2433,6 +2433,9 @@ void disk_round_stats(struct gendisk *disk)
{ {
unsigned long now = jiffies; unsigned long now = jiffies;
if (now == disk->stamp)
return;
if (disk->in_flight) { if (disk->in_flight) {
__disk_stat_add(disk, time_in_queue, __disk_stat_add(disk, time_in_queue,
disk->in_flight * (now - disk->stamp)); disk->in_flight * (now - disk->stamp));