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    SubjectRe: [PATCH 13/14] fs,btrfs: Allow kswapd to writeback pages
    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).

    -chris


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