On Fri, Apr 24, 2015 at 04:46:22PM +0200, Vlastimil Babka wrote: > On 04/21/2015 12:41 PM, Mel Gorman wrote: > >Changelog since V2 > >o Ensure TLBs are flushed before pages are freed (mel) > > I admit not reading all the patches thoroughly, but doesn't this > change of ordering mean that you no longer need the architectural > guarantee discussed in patch 2? No. If we unmap a page to write it to disk then we cannot allow a CPU to write to the physical page being written through a cached entry. -- 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>