lkml.org 
[lkml]   [2008]   [Nov]   [21]   [last100]   RSS Feed
Views: [more markup]  [less markup]  [headers]  [forward] 
 
Messages in this thread
/
FromDavid Howells <>
SubjectRe: [PATCH 06/45] FS-Cache: Recruit a couple of page flags for cache management [ver #41]
DateFri, 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


\
 
 \ /
  Last update: 2008-11-21 11:35    [from the cache]
©2003-2008