Messages in this thread | | | Date | Fri, 28 Jan 2011 16:48:33 +0530 | From | Balbir Singh <> | Subject | Re: [PATCH 3/3] Provide control over unmapped pages (v4) |
| |
* MinChan Kim <minchan.kim@gmail.com> [2011-01-28 16:24:19]:
> > > > But the assumption for LRU order to change happens only if the page > > cannot be successfully freed, which means it is in some way active.. > > and needs to be moved no? > > 1. holded page by someone > 2. mapped pages > 3. active pages > > 1 is rare so it isn't the problem. > Of course, in case of 3, we have to activate it so no problem. > The problem is 2. >
2 is a problem, but due to the size aspects not a big one. Like you said even lumpy reclaim affects it. May be the reclaim code could honour may_unmap much earlier.
-- Three Cheers, Balbir
| |