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blk-mq: avoid stall during boot due to synchronize_rcu_expedited #456

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blk-mq: avoid stall during boot due to synchronize_rcu_expedited #456

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3 changes: 1 addition & 2 deletions block/blk-mq.c
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Original file line number Diff line number Diff line change
Expand Up @@ -4553,8 +4553,7 @@ static void __blk_mq_realloc_hw_ctxs(struct blk_mq_tag_set *set,
* Make sure reading the old queue_hw_ctx from other
* context concurrently won't trigger uaf.
*/
synchronize_rcu_expedited();
kfree(hctxs);
kfree_rcu_mightsleep(hctxs);
hctxs = new_hctxs;
}

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