Date: Thu, 12 May 2011 11:27:04 -0500 (CDT)
From: Christoph Lameter <cl@linux.com>
To: James Bottomley <James.Bottomley@HansenPartnership.com>
cc: Dave Jones <davej@redhat.com>, Mel Gorman <mgorman@suse.de>,
        Andrew Morton <akpm@linux-foundation.org>,
        Colin King <colin.king@canonical.com>,
        Raghavendra D Prabhu <raghu.prabhu13@gmail.com>,
        Jan Kara <jack@suse.cz>, Chris Mason <chris.mason@oracle.com>,
        Pekka Enberg <penberg@kernel.org>, Rik van Riel <riel@redhat.com>,
        Johannes Weiner <hannes@cmpxchg.org>,
        linux-fsdevel <linux-fsdevel@vger.kernel.org>,
        linux-mm <linux-mm@kvack.org>,
        linux-kernel <linux-kernel@vger.kernel.org>,
        linux-ext4 <linux-ext4@vger.kernel.org>
Subject: Re: [PATCH 3/3] mm: slub: Default slub_max_order to 0
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On Thu, 12 May 2011, James Bottomley wrote:

> However, the fact remains that this seems to be a slub problem and it
> needs fixing.

Why are you so fixed on slub in these matters? Its an key component but
there is a high interaction with other subsystems. There was no recent
change in slub that changed the order of allocations. There were changes
affecting the reclaim logic. Slub has been working just fine with the
existing allocation schemes for a long time.

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