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From: Chris Mason on 30 Jun 2010 09:10
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(a)csn.ul.ie>

Signed-off-by: Chris Mason <chris.mason(a)oracle.com>

But, this is only the metadata writepage. fs/btrfs/inode.c has another
one for data pages. (just look for PF_MEMALLOC).

-chris
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From: Mel Gorman on 1 Jul 2010 06:00
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(a)csn.ul.ie>
>
> Signed-off-by: Chris Mason <chris.mason(a)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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From: Rik van Riel on 19 Jul 2010 14:30
On 07/19/2010 09:11 AM, 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(a)csn.ul.ie>

Acked-by: Rik van Riel <riel(a)redhat.com>
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