> Ok, so what everything should be checked?
>
> - PageReserved
> - PageSlab
> - PageLocked
> - PageBuddy
> - PageCompound
> - PageNosave
> - PageNosaveFree
> - kernel page
> - userspace active DMA as you've mentioned. But I don't know how to test
> it
Perhaps I'm missing something obvious, but
On Sun, Feb 04, 2007 at 04:45:51PM +0100, Arjan van de Ven wrote:
> > Sorry for not being more precise. As a part of my thesis work I need to
> > migrate pages. I greatly use mm/migrate.c code.
> > I assume that not all pages can be migrated - especially those used by
> > kernel (where direct vir
On Sun, 2007-02-04 at 16:33 +0100, Michal Hocko wrote:
> On Sun, Feb 04, 2007 at 02:57:30PM +0100, Arjan van de Ven wrote:
> > On Sun, 2007-02-04 at 12:02 +0100, Michal Hocko wrote:
> > > Hi,
> > > is there any effective and fast way how to find out whether page
> > > given by its page frame number
On Sun, Feb 04, 2007 at 02:57:30PM +0100, Arjan van de Ven wrote:
> On Sun, 2007-02-04 at 12:02 +0100, Michal Hocko wrote:
> > Hi,
> > is there any effective and fast way how to find out whether page
> > given by its page frame number is currenly used by (mapped by) kernel?
>
> what do you want to
On Sun, 2007-02-04 at 12:02 +0100, Michal Hocko wrote:
> Hi,
> is there any effective and fast way how to find out whether page
> given by its page frame number is currenly used by (mapped by) kernel?
what do you want to use this for? The answer to your question greatly
depends on that...
Specifi
Hi,
is there any effective and fast way how to find out whether page
given by its page frame number is currenly used by (mapped by) kernel?
At the time of checking I can rely that such page:
- is not buddy allocator page and also not on per CPU lists
- is not compound page
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