Re: [PATCH v2] nvme: avoid race in shutdown namespace removal
From: Christoph Hellwig <hch@infradead.org>
Date: 2021-09-06 08:03:40
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On Thu, Sep 02, 2021 at 11:20:02AM +0200, Daniel Wagner wrote:
When we remove the siblings entry, we update ns->head->list, hence we can't separate the removal and test for being empty. They have to be in the same critical section to avoid a race. To avoid breaking the refcounting imbalance again, add a list empty check to nvme_find_ns_head.
Hannes, can you look over this and run your tests on it? _______________________________________________ Linux-nvme mailing list Linux-nvme@lists.infradead.org http://lists.infradead.org/mailman/listinfo/linux-nvme