* [PATCH] don't forget to call pd_online_fn when activate policy
@ 2017-03-08 4:09 Zhou Chengming
2017-03-08 22:09 ` Jens Axboe
0 siblings, 1 reply; 2+ messages in thread
From: Zhou Chengming @ 2017-03-08 4:09 UTC (permalink / raw)
To: axboe; +Cc: linux-block, linux-kernel, miaoxie, zhouchengming1
From: z00354408 <z00354408@notesmail.huawei.com>
Signed-off-by: z00354408 <z00354408@notesmail.huawei.com>
---
block/blk-cgroup.c | 6 ++++++
1 file changed, 6 insertions(+)
diff --git a/block/blk-cgroup.c b/block/blk-cgroup.c
index 8ba0af7..0dd9e76 100644
--- a/block/blk-cgroup.c
+++ b/block/blk-cgroup.c
@@ -1254,6 +1254,12 @@ int blkcg_activate_policy(struct request_queue *q,
pd->plid = pol->plid;
if (pol->pd_init_fn)
pol->pd_init_fn(pd);
+
+ if (pol->pd_online_fn) {
+ spin_lock(blkg->blkcg->lock);
+ pol->pd_online_fn(pd);
+ spin_unlock(blkg->blkcg->lock);
+ }
}
__set_bit(pol->plid, q->blkcg_pols);
--
1.8.3.1
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2017-03-08 4:09 [PATCH] don't forget to call pd_online_fn when activate policy Zhou Chengming
2017-03-08 22:09 ` Jens Axboe
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