Re: [rfc] [patch] mm: zone_reclaim fix for pseudo file systems

Lee Schermerhorn
2007-07-30T21:12:40Z

On Mon, 2007-07-30 at 13:31 -0700, Christoph Lameter wrote:
> On Mon, 30 Jul 2007, Andrew Morton wrote:
>
> > It is a numa-specific change which adds overhead to non-NUMA builds :(
>
> It could be generalized to fix the other issues that we have with
> unreclaimable pages.
>

For example, see the following patches that I posted in response to a
discussion between Andrew, Rik van Riel and Andrea Arcangeli to
resounding silence [for which, perhaps, I should be grateful?]:

http://marc.info/?l=linux-mm&m=118315682007044&w=4
http://marc.info/?l=linux-mm&m=118315703313729&w=4
http://marc.info/?l=linux-mm&m=118315713323641&w=4
http://marc.info/?l=linux-mm&m=118315742025334&w=4

[By the way: I have another experimental patch in this series that uses
Rik's page_anon() function from his "split LRU lists" patch to detect
swap backed pages and push them to the "no reclaim list" when no swap
space is available.]

I haven't thought about it much, but perhaps my "page_reclaimable()"
function could be taught to exclude RAMFS pages as well?

Later,
Lee