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Subject: Re: slab: introduce the flag SLAB_MINIMIZE_WASTE
References: <20180320173512.GA19669@bombadil.infradead.org>
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From: Vlastimil Babka <vbabka@suse.cz>
Message-ID: <ee8807ff-d650-0064-70bf-e1d77fa61f5c@suse.cz>
Date: Mon, 16 Apr 2018 14:38:49 +0200
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To: Mike Snitzer <snitzer@redhat.com>
Cc: Mikulas Patocka <mpatocka@redhat.com>, Christopher Lameter <cl@linux.com>, Matthew Wilcox <willy@infradead.org>, Pekka Enberg <penberg@kernel.org>, linux-mm@kvack.org, dm-devel@redhat.com, David Rientjes <rientjes@google.com>, Joonsoo Kim <iamjoonsoo.kim@lge.com>, Andrew Morton <akpm@linux-foundation.org>

On 04/13/2018 05:10 PM, Mike Snitzer wrote:
> On Fri, Apr 13 2018 at  5:22am -0400,
> Vlastimil Babka <vbabka@suse.cz> wrote:
>>
>> Would this perhaps be a good LSF/MM discussion topic? Mikulas, are you
>> attending, or anyone else that can vouch for your usecase?
> 
> Any further discussion on SLAB_MINIMIZE_WASTE should continue on list.
> 
> Mikulas won't be at LSF/MM.  But I included Mikulas' dm-bufio changes
> that no longer depend on this proposed SLAB_MINIMIZE_WASTE (as part of
> the 4.17 merge window).

Can you or Mikulas briefly summarize how the dependency is avoided, and
whether if (something like) SLAB_MINIMIZE_WASTE were implemented, the
dm-bufio code would happily switch to it, or not?

Thanks,
Vlastimil

> Mike
>