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Date:   Mon, 30 Jul 2018 15:45:01 +0000
From:   Christopher Lameter <cl@linux.com>
To:     Vlastimil Babka <vbabka@suse.cz>
cc:     Andrew Morton <akpm@linux-foundation.org>, linux-mm@kvack.org,
        linux-kernel@vger.kernel.org, linux-api@vger.kernel.org,
        Roman Gushchin <guro@fb.com>, Michal Hocko <mhocko@kernel.org>,
        Johannes Weiner <hannes@cmpxchg.org>,
        David Rientjes <rientjes@google.com>,
        Joonsoo Kim <iamjoonsoo.kim@lge.com>,
        Mel Gorman <mgorman@techsingularity.net>,
        Matthew Wilcox <willy@infradead.org>
Subject: Re: [PATCH v3 3/7] mm, slab: allocate off-slab freelists as reclaimable
 when appropriate
In-Reply-To: <20180718133620.6205-4-vbabka@suse.cz>
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References: <20180718133620.6205-1-vbabka@suse.cz> <20180718133620.6205-4-vbabka@suse.cz>
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On Wed, 18 Jul 2018, Vlastimil Babka wrote:

> In SLAB, OFF_SLAB caches allocate management structures (currently just the
> freelist) from kmalloc caches when placement in a slab page together with
> objects would lead to suboptimal memory usage. For SLAB_RECLAIM_ACCOUNT caches,
> we can allocate the freelists from the newly introduced reclaimable kmalloc
> caches, because shrinking the OFF_SLAB cache will in general result to freeing
> of the freelists as well. This should improve accounting and anti-fragmentation
> a bit.

Acked-by: Christoph Lameter <cl@linux.com>