| Date | Mon, 19 Jul 2010 10:20:51 -0400 | From | Christoph Hellwig <> | Subject | Re: [PATCH 6/8] fs,xfs: Allow kswapd to writeback pages |
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On Mon, Jul 19, 2010 at 02:11:28PM +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 xfs from the VM.
As pointed out during the discussion on one of your previous post memcg does pose a huge risk of stack overflows. In the XFS tree we've already relaxed the check to allow writeback from kswapd, and until the memcg situation we'll need to keep that check.
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