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Date: Wed, 20 Jun 2012 13:42:52 -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 11/12] nfs: Prevent page allocator recursions with swap over NFS. On 06/20/2012 05:38 AM, Mel Gorman wrote: > GFP_NOFS is _more_ permissive than GFP_NOIO in that it will initiate > IO, just not of any filesystem data. > > The problem is that previously NOFS was correct because that avoids > recursion into the NFS code. With swap-over-NFS, it is no longer > correct as swap IO can lead to this recursion. > > Signed-off-by: Peter Zijlstra<a.p.zijlstra@...llo.nl> > Signed-off-by: Mel Gorman<mgorman@...e.de> Acked-by: Rik van Riel<riel@...hat.com> -- To unsubscribe from this list: send the line "unsubscribe netdev" in the body of a message to majordomo@...r.kernel.org More majordomo info at http://vger.kernel.org/majordomo-info.html
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