On Fri, Mar 07, 2014 at 06:27:45PM +0000, Mel Gorman wrote: > > This is a completely untested prototype. It rechecks pmd_trans_huge > > under the lock and falls through if it hit a parallel split. It's not > > perfect because it could decide to fall through just because there was > > no prot_numa work to do but it's for illustration purposes. Secondly, > > I noted that you are calling invalidate for every pmd range. Is that not > > a lot of invalidations? We could do the same by just tracking the address > > of the first invalidation. > > > > And there were other minor issues. This is still untested but Sasha, > can you try it out please? I discussed this with Rik on IRC for a bit and > reckon this should be sufficient if the correct race has been identified. > Any luck with this patch Sasha? It passed basic tests here but I had not seen the issue trigger either. -- Mel Gorman SUSE Labs -- To unsubscribe, send a message with 'unsubscribe linux-mm' in the body to majordomo@xxxxxxxxx. For more info on Linux MM, see: http://www.linux-mm.org/ . Don't email: <a href=mailto:"dont@xxxxxxxxx";> email@xxxxxxxxx </a>