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Date: Thu, 9 Oct 2014 12:52:45 +0200
From: Peter Zijlstra <peterz@infradead.org>
Subject: Re: [PATCH 3/4] mm: gup: use get_user_pages_fast and
 get_user_pages_unlocked
Message-ID: <20141009105245.GN4750@worktop.programming.kicks-ass.net>
References: <1412153797-6667-1-git-send-email-aarcange@redhat.com>
 <1412153797-6667-4-git-send-email-aarcange@redhat.com>
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To: Andrea Arcangeli <aarcange@redhat.com>
Cc: kvm@vger.kernel.org, linux-kernel@vger.kernel.org, linux-mm@kvack.org, Andres Lagar-Cavilla <andreslc@google.com>, Gleb Natapov <gleb@kernel.org>, Radim Krcmar <rkrcmar@redhat.com>, Paolo Bonzini <pbonzini@redhat.com>, Rik van Riel <riel@redhat.com>, Mel Gorman <mgorman@suse.de>, Andy Lutomirski <luto@amacapital.net>, Andrew Morton <akpm@linux-foundation.org>, Sasha Levin <sasha.levin@oracle.com>, Jianyu Zhan <nasa4836@gmail.com>, Paul Cassella <cassella@cray.com>, Hugh Dickins <hughd@google.com>, Peter Feiner <pfeiner@google.com>, "\\\"Dr. David Alan Gilbert\\\"" <dgilbert@redhat.com>

On Wed, Oct 01, 2014 at 10:56:36AM +0200, Andrea Arcangeli wrote:
> Just an optimization.

Does it make sense to split the thing in two? One where you apply
_unlocked and then one where you apply _fast?

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