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Date: Thu, 1 Jul 2010 10:55:10 +0100
From: Mel Gorman <mel@csn.ul.ie>
To: Chris Mason <chris.mason@oracle.com>, linux-kernel@vger.kernel.org,
       linux-fsdevel@vger.kernel.org, linux-mm@kvack.org,
       Dave Chinner <david@fromorbit.com>, Nick Piggin <npiggin@suse.de>,
       Rik van Riel <riel@redhat.com>, Johannes Weiner <hannes@cmpxchg.org>,
       Christoph Hellwig <hch@infradead.org>,
       KAMEZAWA Hiroyuki <kamezawa.hiroyu@jp.fujitsu.com>,
       KOSAKI Motohiro <kosaki.motohiro@jp.fujitsu.com>,
       Andrew Morton <akpm@linux-foundation.org>,
       Andrea Arcangeli <aarcange@redhat.com>
Subject: Re: [PATCH 13/14] fs,btrfs: Allow kswapd to writeback pages
Message-ID: <20100701095509.GF31741@csn.ul.ie>
References: <1277811288-5195-1-git-send-email-mel@csn.ul.ie> <1277811288-5195-14-git-send-email-mel@csn.ul.ie> <20100630130504.GT1993@think>
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On Wed, Jun 30, 2010 at 09:05:04AM -0400, Chris Mason wrote:
> On Tue, Jun 29, 2010 at 12:34:47PM +0100, Mel Gorman wrote:
> > As only kswapd and memcg are writing back pages, there should be no
> > danger of overflowing the stack. Allow the writing back of dirty pages
> > in btrfs from the VM.
> > 
> > Signed-off-by: Mel Gorman <mel@csn.ul.ie>
> 
> Signed-off-by: Chris Mason <chris.mason@oracle.com>
> 
> But, this is only the metadata writepage.  fs/btrfs/inode.c has another
> one for data pages.  (just look for PF_MEMALLOC).
> 

My bad, fixed now. Thanks.

-- 
Mel Gorman
Part-time Phd Student                          Linux Technology Center
University of Limerick                         IBM Dublin Software Lab
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