Messages in this thread | | | From | David Howells <> | Subject | Re: [PATCH 06/45] FS-Cache: Recruit a couple of page flags for cache management [ver #41] | Date | Fri, 21 Nov 2008 10:31:58 +0000 |
| |
Andrew Morton <akpm@linux-foundation.org> wrote:
> ow, that hurt. Every time someone does this I ask "how many are left" > but nobody seems to know how to work it out.
Yeah, that worries me a bit too. That why we looked at reclaiming PG_private. The patches to do that didn't appear to be interesting, however.
> How many are left?
It depends on the configuration, but with maximum usage, 24 are used, except on IA64 where 25 are used.
> I'd suggest that we make PagePrivate() go away completely, to prevent > accidental usages from sneaking back in. If that's practical.
Well, there are still some places where PG_private does need to be checked individually.
David
| |