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Date: Sat, 8 Aug 2020 19:35:23 -0400 From: Sasha Levin <sashal@...nel.org> To: linux-kernel@...r.kernel.org, stable@...r.kernel.org Cc: Chengming Zhou <zhouchengming@...edance.com>, Tejun Heo <tj@...nel.org>, Jens Axboe <axboe@...nel.dk>, Sasha Levin <sashal@...nel.org>, linux-block@...r.kernel.org Subject: [PATCH AUTOSEL 5.8 54/72] iocost: Fix check condition of iocg abs_vdebt From: Chengming Zhou <zhouchengming@...edance.com> [ Upstream commit d9012a59db54442d5b2fcfdfcded35cf566397d3 ] 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@...edance.com> Acked-by: Tejun Heo <tj@...nel.org> Signed-off-by: Jens Axboe <axboe@...nel.dk> Signed-off-by: Sasha Levin <sashal@...nel.org> --- block/blk-iocost.c | 2 +- 1 file changed, 1 insertion(+), 1 deletion(-) diff --git a/block/blk-iocost.c b/block/blk-iocost.c index 8ac4aad66ebc3..86ba6fd254e1d 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; -- 2.25.1
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