Date: Thu, 26 Sep 2013 16:19:35 -0500
From: Alex Thorlton <athorlton@sgi.com>
To: "Kirill A. Shutemov" <kirill.shutemov@linux.intel.com>
Cc: Ingo Molnar <mingo@redhat.com>, Andrew Morton <akpm@linux-foundation.org>,
        Naoya Horiguchi <n-horiguchi@ah.jp.nec.com>,
        "Eric W . Biederman" <ebiederm@xmission.com>,
        "Paul E . McKenney" <paulmck@linux.vnet.ibm.com>,
        Al Viro <viro@zeniv.linux.org.uk>, Andi Kleen <ak@linux.intel.com>,
        Andrea Arcangeli <aarcange@redhat.com>,
        Dave Hansen <dave.hansen@intel.com>, Dave Jones <davej@redhat.com>,
        David Howells <dhowells@redhat.com>,
        Frederic Weisbecker <fweisbec@gmail.com>,
        Johannes Weiner <hannes@cmpxchg.org>,
        Kees Cook <keescook@chromium.org>, Mel Gorman <mgorman@suse.de>,
        Michael Kerrisk <mtk.manpages@gmail.com>,
        Oleg Nesterov <oleg@redhat.com>, Peter Zijlstra <peterz@infradead.org>,
        Rik van Riel <riel@redhat.com>, Robin Holt <robinmholt@gmail.com>,
        Sedat Dilek <sedat.dilek@gmail.com>,
        Srikar Dronamraju <srikar@linux.vnet.ibm.com>,
        Thomas Gleixner <tglx@linutronix.de>, linux-kernel@vger.kernel.org,
        linux-mm@kvack.org
Subject: Re: [PATCHv2 0/9] split page table lock for PMD tables
Message-ID: <20130926211935.GJ2940@sgi.com>
References: <1379330740-5602-1-git-send-email-kirill.shutemov@linux.intel.com>
 <20130919171727.GC6802@sgi.com>
 <20130920123137.BE2F7E0090@blue.fi.intel.com>
 <20130924164443.GB2940@sgi.com>
 <20130926105052.0205AE0090@blue.fi.intel.com>
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> Let me guess: you have HUGETLBFS enabled in your config, right? ;)
> 
> HUGETLBFS hasn't converted to new locking and we disable split pmd lock if
> HUGETLBFS is enabled.

Ahhhhh, that's got it!  I double checked my config a million times to
make sure that I wasn't going crazy, but I must've missed that. With
that fixed, it's performing exactly how I thought it should.  Looking
great to me!

Sorry for the confusion!

- Alex
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