On Mon, Jul 19, 2010 at 10:20:51AM -0400, Christoph Hellwig wrote: > 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. I remember. This is partially to nudge the memcg people to see where they currently stand with alleviating the problem. > 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. > If memcg remains a problem, I'll drop these two patches. -- Mel Gorman Part-time Phd Student Linux Technology Center University of Limerick IBM Dublin Software Lab -- 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>