On Fri, 01 Jun 2007 11:44:25 +0400 Pavel Emelianov <[EMAIL PROTECTED]> wrote:
> Andrew Morton wrote: > > On Thu, 31 May 2007 14:35:43 +0400 > > Pavel Emelianov <[EMAIL PROTECTED]> wrote: > > > >>> Would I be correct in guessing that pages which are on the > >>> per-rss-container lists are also eligible for reclaim off the traditional > >>> page LRUs? If so, how does that work? When a page gets freed off the > >> Yes. All the pages are accessible from booth - global and per-container > >> LRU lists and reclamation can be performed from booth. > >> > >>> per-zone LRUs does it also get removed from the per-rss_container LRU? > >>> But > >>> how can this be right? > >> I don't get your idea here. > > > > If we have a page which is on the zone LRU with refcount=1 and someone does > > put_page() on it, we will take that page off the zone LRU and then actually > > free the page. > > > > I am assuming that your patches change that logic so that we will also > > remove that page from the per-container LRU at the same time? > > Oh, I see. No that will work another way. Page stays in per-container > LRU lists as long as it is mapped. When the last process is unmapping > the page, it it is removed, but stays in global LRU till its refcount > drops to 0. ho hum, OK. This wasn't obvious from the code and it isn't something I should have learned by emailing you guys! Please have a think about preparing an overall decription of the design and implementation of this rather important kernel change? - To unsubscribe from this list: send the line "unsubscribe linux-kernel" in the body of a message to [EMAIL PROTECTED] More majordomo info at http://vger.kernel.org/majordomo-info.html Please read the FAQ at http://www.tux.org/lkml/