[dm-devel] [PATCH v7 1/3] block: add blk_mq_is_queue_frozen()

[Sergei Shtepa]

The 03/14/2021 12:14, Christoph Hellwig wrote:
> 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.

But perhaps it is possible to come up with a more elegant solution?
I'll think about it.
-- 
Sergei Shtepa
Veeam Software developer.