If swap entry is cleared, we can see the reason that copying pte is interrupted. If due to page table lock held long enough, no need to increase swap count. Signed-off-by: Hillf Danton <dhillf@xxxxxxxxx> --- --- a/mm/memory.c Fri Jul 27 21:33:32 2012 +++ b/mm/memory.c Fri Jul 27 21:35:24 2012 @@ -971,6 +971,7 @@ again: if (add_swap_count_continuation(entry, GFP_KERNEL) < 0) return -ENOMEM; progress = 0; + entry.val = 0; } if (addr != end) goto again; -- -- 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>