On Wed, Jun 08, 2011 at 09:15:46PM -0400, Rik van Riel wrote: > On 06/02/2011 08:59 AM, Hiroyuki Kamezawa wrote: > > >It seems your current series is a mixture of 2 works as > >"re-desgin of softlimit" and "removal of global LRU". > >I don't understand why you need 2 works at once. > > That seems pretty obvious. > > With the global LRU gone, the only way to reclaim > pages in a global fashion (because the zone is low > on memory), is to reclaim from all the memcgs in > the zone. That is correct. > Doing that requires that the softlimit stuff is > changed, and not only the biggest offender is > attacked. I think it's much more natural to do it that way, but it's not a requirement as such. We could just keep the extra soft limit reclaim invocation in kswapd that looks for the biggest offender and the hierarchy below it, then does a direct call to do_shrink_zone() to bypass the generic hierarchy walk. It's not very nice to have that kind of code duplication, but it's possible to leave it like that for now. -- 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/ . Fight unfair telecom internet charges in Canada: sign http://stopthemeter.ca/ Don't email: <a href=mailto:"dont@xxxxxxxxx";> email@xxxxxxxxx </a>