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Date:   Tue, 4 Apr 2017 10:07:23 -0500 (CDT)
From:   Christoph Lameter <cl@...ux.com>
To:     Michal Hocko <mhocko@...nel.org>
cc:     Kees Cook <keescook@...omium.org>,
        Andrew Morton <akpm@...ux-foundation.org>,
        Pekka Enberg <penberg@...nel.org>,
        David Rientjes <rientjes@...gle.com>,
        Joonsoo Kim <iamjoonsoo.kim@....com>, linux-mm@...ck.org,
        linux-kernel@...r.kernel.org
Subject: Re: [PATCH] mm: Add additional consistency check

On Tue, 4 Apr 2017, Michal Hocko wrote:

> NAK without a proper changelog. Seriously, we do not blindly apply
> changes from other projects without a deep understanding of all
> consequences.

Functionalitywise this is trivial. A page must be a slab page in order to
be able to determine the slab cache of an object. Its definitely not ok if
the page is not a slab page.

The main issue that may exist here is the adding of overhead to a critical
code path like kfree().

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