Re: dm verity: don't use WQ_MEM_RECLAIM

[Mike Snitzer <snitzer@kernel.org>]

On Tue, Sep 03, 2024 at 09:04:44PM -0700, Eric Biggers wrote:
> From: Eric Biggers <ebiggers@google.com>
> 
> Since dm-verity doesn't support writes, the kernel's memory reclaim code
> will never wait on dm-verity work.  That makes the use of WQ_MEM_RECLAIM
> in dm-verity unnecessary.  WQ_MEM_RECLAIM has been present from the
> beginning of dm-verity, but I could not find a justification for it;
> I suspect it was just copied from dm-crypt which does support writes.
> 
> Therefore, remove WQ_MEM_RECLAIM from dm-verity.  This eliminates the
> creation of an unnecessary rescuer thread per dm-verity device.
> 
> Signed-off-by: Eric Biggers <ebiggers@google.com>

Thanks!

Reviewed-by: Mike Snitzer <snitzer@kernel.org>