Messages in this thread |  | | | Date | Wed, 24 Jan 2007 12:13:18 +0900 | | From | KAMEZAWA Hiroyuki <> | | Subject | Re: [RFC] Limit the size of the pagecache |
one more thing...
On Tue, 23 Jan 2007 16:49:55 -0800 (PST) Christoph Lameter <clameter@sgi.com> wrote:
> @@ -1168,6 +1170,11 @@ zonelist_scan: > !cpuset_zone_allowed_softwall(zone, gfp_mask)) > goto try_next_zone; > > + if ((gfp_mask & __GFP_PAGECACHE) && > + zone_page_state(zone, NR_FILE_PAGES) > > + zone->max_pagecache_pages) > + goto try_next_zone; > +
I don't prefer to cause zone fallback by this. This may use ZONE_DMA before exhausing ZONE_NORMAL (ia64), ZONE_NORMAL before ZONE_HIGHMEM (x86). Very rapid page allocation can eats some amount of lower zone.
Regards, -Kame
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