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Date: Wed, 20 Jun 2012 12:11:44 -0400
From: Rik van Riel <riel@redhat.com>
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To: Mel Gorman <mgorman@suse.de>
CC: Andrew Morton <akpm@linux-foundation.org>, Linux-MM <linux-mm@kvack.org>,
        Linux-Netdev <netdev@vger.kernel.org>,
        Linux-NFS <linux-nfs@vger.kernel.org>,
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        David Miller <davem@davemloft.net>,
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        Peter Zijlstra <a.p.zijlstra@chello.nl>,
        Mike Christie <michaelc@cs.wisc.edu>,
        Eric B Munson <emunson@mgebm.net>
Subject: Re: [PATCH 06/12] mm: Add get_kernel_page[s] for pinning of kernel
 addresses for I/O
References: <1340185081-22525-1-git-send-email-mgorman@suse.de> <1340185081-22525-7-git-send-email-mgorman@suse.de>
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On 06/20/2012 05:37 AM, Mel Gorman wrote:
> This patch adds two new APIs get_kernel_pages() and get_kernel_page()
> that may be used to pin a vector of kernel addresses for IO. The initial
> user is expected to be NFS for allowing pages to be written to swap
> using aops->direct_IO(). Strictly speaking, swap-over-NFS only needs
> to pin one page for IO but it makes sense to express the API in terms
> of a vector and add a helper for pinning single pages.
>
> Signed-off-by: Mel Gorman<mgorman@suse.de>

Reviewed-by: Rik van Riel<riel@redhat.com>