Hi, here are a few simplifications for softdirty memory tracker code, in particular we dropped off x86-32 support since it seems noone needed it here on x86 platform. As Andrew requested I've rebased patches on top of current linux-next repo. Also at first I wanted to rip off _PAGE_PSE bit which we use in swap ptes to track dirty status of swapped pages and reuse _PAGE_BIT_SOFT_DIRTY instead. It's still possible but requires additional shrinking of maximal swap size and I don't know if it's acceptible or not. Currently we have #ifdef CONFIG_NUMA_BALANCING /* Automatic NUMA balancing needs to be distinguishable from swap entries */ #define SWP_OFFSET_SHIFT (_PAGE_BIT_PROTNONE + 2) #else #define SWP_OFFSET_SHIFT (_PAGE_BIT_PROTNONE + 1) #endif If I reuse _PAGE_BIT_SOFT_DIRTY I'll have to increase this shift up to bit 11, which, again, I think is too much, right? Comments are highly appreciated! Cyrill -- 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>