linux-kernel - Re: [PATCH 10/12] nfs: enable swap on NFS

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Message-ID: <4FE20A8C.6000207@redhat.com>
Date:	Wed, 20 Jun 2012 13:38:20 -0400
From:	Rik van Riel <riel@...hat.com>
To:	Mel Gorman <mgorman@...e.de>
CC:	Andrew Morton <akpm@...ux-foundation.org>,
	Linux-MM <linux-mm@...ck.org>,
	Linux-Netdev <netdev@...r.kernel.org>,
	Linux-NFS <linux-nfs@...r.kernel.org>,
	LKML <linux-kernel@...r.kernel.org>,
	David Miller <davem@...emloft.net>,
	Trond Myklebust <Trond.Myklebust@...app.com>,
	Neil Brown <neilb@...e.de>,
	Christoph Hellwig <hch@...radead.org>,
	Peter Zijlstra <a.p.zijlstra@...llo.nl>,
	Mike Christie <michaelc@...wisc.edu>,
	Eric B Munson <emunson@...bm.net>
Subject: Re: [PATCH 10/12] nfs: enable swap on NFS

On 06/20/2012 05:37 AM, Mel Gorman wrote:
> Implement the new swapfile a_ops for NFS and hook up ->direct_IO. This
> will set the NFS socket to SOCK_MEMALLOC and run socket reconnect
> under PF_MEMALLOC as well as reset SOCK_MEMALLOC before engaging the
> protocol ->connect() method.
>
> PF_MEMALLOC should allow the allocation of struct socket and related
> objects and the early (re)setting of SOCK_MEMALLOC should allow us
> to receive the packets required for the TCP connection buildup.
>
> [dfeng@...hat.com: Fix handling of multiple swap files]
> [a.p.zijlstra@...llo.nl: Original patch]
> Signed-off-by: Mel Gorman<mgorman@...e.de>

Acked-by: Rik van Riel<riel@...hat.com>

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