Commit edc71131 authored by Corrado Zoccolo's avatar Corrado Zoccolo Committed by Jens Axboe
Browse files

cfq-iosched: commenting non-obvious initialization 



Added a comment to explain the initialization of last_delayed_sync.

Signed-off-by: default avatarCorrado Zoccolo <czoccolo@gmail.com>
Acked-by: default avatarJeff Moyer <jmoyer@redhat.com>
Signed-off-by: default avatarJens Axboe <jens.axboe@oracle.com>
parent 7667aa06

block/cfq-iosched.c

+4 −0
Original line number Diff line number Diff line
@@ -3759,6 +3759,10 @@ static void *cfq_init_queue(struct request_queue *q) 
	cfqd->cfq_latency = 1;

	cfqd->cfq_group_isolation = 0;

	cfqd->hw_tag = -1;

	/*

	 * we optimistically start assuming sync ops weren't delayed in last

	 * second, in order to have larger depth for async operations.

	 */

	cfqd->last_delayed_sync = jiffies - HZ;

	INIT_RCU_HEAD(&cfqd->rcu);

	return cfqd;