On Thu, Aug 5, 2010 at 1:24 PM, Andrew Morton <akpm@xxxxxxxxxxxxxxxxxxxx> wrote: > Wait. These counters appear in /proc/vmstat. So why create standalone > /proc/sys/vm files as well? Andrew I was thinking about this today. And I think there is a case for keeping the proc files. Christoph was the one who pointed out to me that is their proper home and I think he's right. Most if not all the tunables for writeback are there. When one is trying to find the state of the system's writeback activity that's the directory. Only having these variables in /proc/vmstat to me feels like a way to make sure that users who would need them won't find them unless they are reading source. And these are folks who aren't reading source. /proc/vmstat _does_ look like a good place to put the thresholds as it already has similar values as the thresholds suck as kswapd_low_wmark_hit_quickly. mrubin -- To unsubscribe, send a message with 'unsubscribe linux-mm' in the body to majordomo@xxxxxxxxxx For more info on Linux MM, see: http://www.linux-mm.org/ . Don't email: <a href=mailto:"dont@xxxxxxxxx";> email@xxxxxxxxx </a>