Commit 77bbb259 authored by Michal Koutný's avatar Michal Koutný Committed by Tejun Heo
Browse files

cgroup/blkio: Add deprecation messages to reset_stats 



It is difficult to sync with stat updaters, stats are (should be)
monotonic so users can calculate differences from a reference.

Signed-off-by: default avatarMichal Koutný <mkoutny@suse.com>
Acked-by: default avatarJens Axboe <axboe@kernel.dk>
Signed-off-by: default avatarTejun Heo <tj@kernel.org>
parent 012c419f

block/blk-cgroup.c

+1 −0
Original line number Diff line number Diff line
@@ -659,6 +659,7 @@ static int blkcg_reset_stats(struct cgroup_subsys_state *css, 
	struct blkcg_gq *blkg;

	int i;



	pr_info_once("blkio.%s is deprecated\n", cftype->name);

	mutex_lock(&blkcg_pol_mutex);

	spin_lock_irq(&blkcg->lock);