> Il giorno 26 gen 2021, alle ore 17:17, Jens Axboe <axboe@xxxxxxxxx> ha scritto: > > On 1/26/21 3:50 AM, Paolo Valente wrote: >> diff --git a/block/bfq-iosched.c b/block/bfq-iosched.c >> index 445cef9c0bb9..a83149407336 100644 >> --- a/block/bfq-iosched.c >> +++ b/block/bfq-iosched.c >> @@ -4487,9 +4487,15 @@ static struct bfq_queue *bfq_select_queue(struct bfq_data *bfqd) >> bfq_bfqq_busy(bfqq->bic->bfqq[0]) && >> bfqq->bic->bfqq[0]->next_rq ? >> bfqq->bic->bfqq[0] : NULL; >> + struct bfq_queue *blocked_bfqq = >> + !hlist_empty(&bfqq->woken_list) ? >> + container_of(bfqq->woken_list.first, >> + struct bfq_queue, >> + woken_list_node) >> + : NULL; > > hlist_first_entry_or_null? > I didn't find any such function. There is a list_first_entry_or_null, but it's for circular doubly linked lists. I'll wait a little bit for your reply, then send a V2 with this patch unchanged. Thanks, Paolo > -- > Jens Axboe >
