diff mbox series

iocost: Fix check condition of iocg abs_vdebt

Message ID 20200730090321.38781-1-zhouchengming@bytedance.com (mailing list archive)
State New, archived
Headers show
Series iocost: Fix check condition of iocg abs_vdebt | expand

Commit Message

Chengming Zhou July 30, 2020, 9:03 a.m. UTC 
We shouldn't skip iocg when its abs_vdebt is not zero.

Fixes: 0b80f9866e6b ("iocost: protect iocg->abs_vdebt with
iocg->waitq.lock")

Signed-off-by: Chengming Zhou <zhouchengming@bytedance.com>
---
 block/blk-iocost.c | 2 +-
 1 file changed, 1 insertion(+), 1 deletion(-)

Comments

Tejun Heo July 30, 2020, 2:14 p.m. UTC | #1 
Hello,

On Thu, Jul 30, 2020 at 05:03:21PM +0800, Chengming Zhou wrote:
> We shouldn't skip iocg when its abs_vdebt is not zero.
> 
> Fixes: 0b80f9866e6b ("iocost: protect iocg->abs_vdebt with
> iocg->waitq.lock")
> 
> Signed-off-by: Chengming Zhou <zhouchengming@bytedance.com>

  Acked-by: Tejun Heo <tj@kernel.org>

Thanks.
Jens Axboe July 30, 2020, 5:46 p.m. UTC | #2 
On 7/30/20 3:03 AM, Chengming Zhou wrote:
> We shouldn't skip iocg when its abs_vdebt is not zero.

Applied, thanks.

> Fixes: 0b80f9866e6b ("iocost: protect iocg->abs_vdebt with
> iocg->waitq.lock")

Minor note, and I fixed this up, but these should be one line.
diff mbox series

Patch

diff --git a/block/blk-iocost.c b/block/blk-iocost.c
index 8ac4aad66ebc..86ba6fd254e1 100644
--- a/block/blk-iocost.c
+++ b/block/blk-iocost.c
@@ -1370,7 +1370,7 @@  static void ioc_timer_fn(struct timer_list *timer)
 	 * should have woken up in the last period and expire idle iocgs.
 	 */
 	list_for_each_entry_safe(iocg, tiocg, &ioc->active_iocgs, active_list) {
-		if (!waitqueue_active(&iocg->waitq) && iocg->abs_vdebt &&
+		if (!waitqueue_active(&iocg->waitq) && !iocg->abs_vdebt &&
 		    !iocg_is_idle(iocg))
 			continue;