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Date: Thu, 7 Jan 2016 09:54:24 -0600 (CST)
From: Christoph Lameter <cl@linux.com>
Subject: Re: [PATCH 01/10] slub: cleanup code for kmem cgroup support to
 kmem_cache_free_bulk
In-Reply-To: <20160107140338.28907.48580.stgit@firesoul>
Message-ID: <alpine.DEB.2.20.1601070953460.28564@east.gentwo.org>
References: <20160107140253.28907.5469.stgit@firesoul> <20160107140338.28907.48580.stgit@firesoul>
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Sender: owner-linux-mm@kvack.org
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To: Jesper Dangaard Brouer <brouer@redhat.com>
Cc: linux-mm@kvack.org, Vladimir Davydov <vdavydov@virtuozzo.com>, Andrew Morton <akpm@linux-foundation.org>, Linus Torvalds <torvalds@linux-foundation.org>, Joonsoo Kim <iamjoonsoo.kim@lge.com>

On Thu, 7 Jan 2016, Jesper Dangaard Brouer wrote:

> +	/* Support for memcg, compiler can optimize this out */
> +	*s = cache_from_obj(*s, object);
> +

Well the indirection on *s presumably cannot be optimized out. And the
indirection is not needed when cgroups are not active.

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