Re: [PATCH 13/14] fs,btrfs: Allow kswapd to writeback pages
From: Chris Mason
Date: Wed Jun 30 2010 - 09:07:50 EST
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@xxxxxxxxx>
Signed-off-by: Chris Mason <chris.mason@xxxxxxxxxx>
But, this is only the metadata writepage. fs/btrfs/inode.c has another
one for data pages. (just look for PF_MEMALLOC).
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