Re: [PATCH v7 1/3] block: add blk_mq_is_queue_frozen()
flat view
From: Christoph Hellwig <hch@infradead.org>
Date: 2021-03-14 09:16:42
Also in:
dm-devel, linux-block, lkml
On Fri, Mar 12, 2021 at 02:06:41PM -0500, Mike Snitzer wrote:
This is returning a frozen state that is immediately stale. I don't think any code calling this is providing the guarantees you think it does due to the racey nature of this state once the mutex is dropped.
The code only uses it for asserts in the form of WARN_ONs.