blk-cgroup: bypass blkcg_deactivate_policy after destroying
[ Upstream commit e63a573035
]
blkcg_deactivate_policy() can be called after blkg_destroy_all()
returns, and it isn't necessary since blkg_destroy_all has covered
policy deactivation.
Signed-off-by: Ming Lei <ming.lei@redhat.com>
Link: https://lore.kernel.org/r/20231117023527.3188627-4-ming.lei@redhat.com
Signed-off-by: Jens Axboe <axboe@kernel.dk>
Signed-off-by: Sasha Levin <sashal@kernel.org>
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parent
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@ -577,6 +577,7 @@ static void blkg_destroy_all(struct gendisk *disk)
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struct request_queue *q = disk->queue;
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struct blkcg_gq *blkg, *n;
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int count = BLKG_DESTROY_BATCH_SIZE;
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int i;
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restart:
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spin_lock_irq(&q->queue_lock);
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@ -602,6 +603,18 @@ restart:
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}
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}
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/*
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* Mark policy deactivated since policy offline has been done, and
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* the free is scheduled, so future blkcg_deactivate_policy() can
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* be bypassed
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*/
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for (i = 0; i < BLKCG_MAX_POLS; i++) {
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struct blkcg_policy *pol = blkcg_policy[i];
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if (pol)
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__clear_bit(pol->plid, q->blkcg_pols);
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}
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q->root_blkg = NULL;
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spin_unlock_irq(&q->queue_lock);
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}
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