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. -- To unsubscribe, send a message with 'unsubscribe linux-mm' in the body to majordomo@xxxxxxxxxx For more info on Linux MM, see: http://www.linux-mm.org/ . Don't email: <a href=mailto:"dont@xxxxxxxxx";> email@xxxxxxxxx </a>