lkml.org 
[lkml]   [2009]   [Apr]   [14]   [last100]   RSS Feed
Views: [wrap][no wrap]   [headers]  [forward] 
 
Messages in this thread
/
From
SubjectRe: [RFC][PATCH] proc: export more page flags in /proc/kpageflags
Date

> > > > > - PG_unevictable
> > > > > - PG_mlocked
>
> How about including PG_unevictable/PG_mlocked?
> They shall be meaningful to administrators.

I explained another mail. please see it.


> > this 9 flags shouldn't exported.
> > I can't imazine administrator use what purpose those flags.
>
> > > > > - PG_swapcache
> > > > > - PG_swapbacked
> > > > > - PG_poison
> > > > > - PG_compound
> >
> > I can agree this 4 flags.
> > However pagemap lack's hugepage considering.
> > if PG_compound exporting, we need more work.
>
> You mean to fold PG_head/PG_tail into PG_COMPOUND?
> Yes, that's a good simplification for end users.

Yes, I agree.


> > > > > - PG_NOPAGE: whether the page is present
> >
> > PM_NOT_PRESENT isn't enough?
>
> That would not be usable if you are going to do a system wide scan.
> PG_NOPAGE could help differentiate the 'no page' case from 'no flags'
> case.
>
> However PG_NOPAGE is more about the last resort. The system wide scan
> can be made much more efficient if we know the exact memory layouts.

Yup :)




\
 
 \ /
  Last update: 2009-04-14 09:45    [W:0.088 / U:2.408 seconds]
©2003-2020 Jasper Spaans|hosted at Digital Ocean and TransIP|Read the blog|Advertise on this site