On 04/25/2015 01:45 PM, Mel Gorman wrote: > If a PTE is unmapped and it's dirty then it was writable recently. Due > to deferred TLB flushing, it's best to assume a writable TLB cache entry > exists. With that assumption, the TLB must be flushed before any IO can > start or the page is freed to avoid lost writes or data corruption. This > patch defers flushing of potentially writable TLBs as long as possible. > > Signed-off-by: Mel Gorman <mgorman@xxxxxxx> Reviewed-by: Rik van Riel <riel@xxxxxxxxxx> -- All rights reversed -- 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>