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Date: Tue, 27 Dec 2016 16:17:55 -0800 (PST)
From: David Rientjes <rientjes@google.com>
Subject: Re: [PATCH v2] slub: do not merge cache if slub_debug contains a
 never-merge flag
In-Reply-To: <20161226190855.GB2600@lp-laptop-d>
Message-ID: <alpine.DEB.2.10.1612271617450.57140@chino.kir.corp.google.com>
References: <20161222235959.GC6871@lp-laptop-d> <alpine.DEB.2.20.1612231228340.21172@east.gentwo.org> <20161223190023.GA9644@lp-laptop-d> <alpine.DEB.2.20.1612241708280.9536@east.gentwo.org> <20161226190855.GB2600@lp-laptop-d>
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Sender: owner-linux-mm@kvack.org
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To: Grygorii Maistrenko <grygoriimkd@gmail.com>
Cc: Christoph Lameter <cl@linux.com>, linux-mm@kvack.org, Pekka Enberg <penberg@kernel.org>, Joonsoo Kim <iamjoonsoo.kim@lge.com>, Andrew Morton <akpm@linux-foundation.org>

On Mon, 26 Dec 2016, Grygorii Maistrenko wrote:

> In case CONFIG_SLUB_DEBUG_ON=n, find_mergeable() gets debug features
> from commandline but never checks if there are features from the
> SLAB_NEVER_MERGE set.
> As a result selected by slub_debug caches are always mergeable if they
> have been created without a custom constructor set or without one of the
> SLAB_* debug features on.
> 
> This moves the SLAB_NEVER_MERGE check below the flags update from
> commandline to make sure it won't merge the slab cache if one of the
> debug features is on.
> 
> Signed-off-by: Grygorii Maistrenko <grygoriimkd@gmail.com>

Acked-by: David Rientjes <rientjes@google.com>

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