The old_hwi is already max hweight_inuse if iocg->inuse == iocg->active. Remove unnecessary calculation. Signed-off-by: Kemeng Shi <shikemeng@xxxxxxxxxx> --- block/blk-iocost.c | 5 ++++- 1 file changed, 4 insertions(+), 1 deletion(-) diff --git a/block/blk-iocost.c b/block/blk-iocost.c index 96c1571a8a1d..fa90f471dfdc 100644 --- a/block/blk-iocost.c +++ b/block/blk-iocost.c @@ -2299,7 +2299,10 @@ static void ioc_timer_fn(struct timer_list *timer) * Determine the donation amount. */ current_hweight(iocg, &hwa, &old_hwi); - hwm = current_hweight_max(iocg); + if (iocg->inuse == iocg->active) + hwm = old_hwi; + else + hwm = current_hweight_max(iocg); new_hwi = hweight_after_donation(iocg, old_hwi, hwm, usage, &now); /* -- 2.30.0
