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blk-cgroup: fix missing pd_online_fn() while activating policy

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[ Upstream commit e3ff8887e7db757360f97634e0d6f4b8e27a8c46 ]

If the policy defines pd_online_fn(), it should be called after
pd_init_fn(), like blkg_create().

Signed-off-by: Yu Kuai <[email protected]>
Acked-by: Tejun Heo <[email protected]>
Link: https://lore.kernel.org/r/[email protected]
Signed-off-by: Jens Axboe <[email protected]>
Signed-off-by: Sasha Levin <[email protected]>
This commit is contained in:
Yu Kuai 2023-01-03 19:28:33 +08:00 • committed by Greg Kroah-Hartman
commit 1986cd616b
1 changed files with 4 additions and 0 deletions
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4
block/blk-cgroup.c
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@ -1445,6 +1445,10 @@ retry:
list_for_each_entry_reverse(blkg, &q->blkg_list, q_node)
pol->pd_init_fn(blkg->pd[pol->plid]);
if (pol->pd_online_fn)
list_for_each_entry_reverse(blkg, &q->blkg_list, q_node)
pol->pd_online_fn(blkg->pd[pol->plid]);
__set_bit(pol->plid, q->blkcg_pols);
ret = 0;