lkml.org 
[lkml]   [2003]   [Feb]   [10]   [last100]   RSS Feed
Views: [wrap][no wrap]   [headers]  [forward] 
 
Messages in this thread
/
Date
From
SubjectRe: extra PG_* bits for page->flags
On Tue, 2003-02-11 at 12:12, Andrew Morton wrote:
> David Howells <dhowells@redhat.com> wrote:
> > (*) PG_journal
> > (*) PG_journalmark
>
> Well. If you new fs goes in then yes, we can spare those bits (just).

May I ask, how many bits do you consider available? swsusp beta 18 (ie
2.4), which I'm beginning to port to 2.5, uses 4 bits during suspend &
resume for various purposes. If I understand the code correctly, the
zone flags use bits 24-31 (although there has been that thread saying
they could use less bits). I see in the 2.5.60 patch bit 19 is now in
use. Should I be using private, temporarily allocated bitmaps instead of
the page flags, to ease the pressure? (Especially since the suspend code
is not used in 'normal' operation anyway).

Regards,

Nigel


-
To unsubscribe from this list: send the line "unsubscribe linux-kernel" in
the body of a message to majordomo@vger.kernel.org
More majordomo info at http://vger.kernel.org/majordomo-info.html
Please read the FAQ at http://www.tux.org/lkml/

\
 
 \ /
  Last update: 2005-03-22 13:33    [W:0.046 / U:1.392 seconds]
©2003-2020 Jasper Spaans|hosted at Digital Ocean and TransIP|Read the blog|Advertise on this site