On 12/15/2015 05:59 PM, Michal Hocko wrote:
head page is what linked into LRU, but not nessesary the way we obtain the
page to check. If we check PageLRU(pte_page(*pte)) it should produce the
right result.
I am not following you here. Any pfn walk could get to a tail page and
if we happen to d
On Tue 15-12-15 14:03:18, Kirill A. Shutemov wrote:
> On Tue, Dec 15, 2015 at 09:52:33AM +0100, Michal Hocko wrote:
> > On Mon 14-12-15 14:04:56, Kirill A. Shutemov wrote:
> > > On Wed, Dec 09, 2015 at 02:02:05PM +0100, Michal Hocko wrote:
> > > > Hi Kirill,
> > >
> > > [ sorry for late reply, jus
On Tue, Dec 15, 2015 at 09:52:33AM +0100, Michal Hocko wrote:
> On Mon 14-12-15 14:04:56, Kirill A. Shutemov wrote:
> > On Wed, Dec 09, 2015 at 02:02:05PM +0100, Michal Hocko wrote:
> > > Hi Kirill,
> >
> > [ sorry for late reply, just back from vacation. ]
> >
> > > while looking at the issue re
On Mon 14-12-15 14:04:56, Kirill A. Shutemov wrote:
> On Wed, Dec 09, 2015 at 02:02:05PM +0100, Michal Hocko wrote:
> > Hi Kirill,
>
> [ sorry for late reply, just back from vacation. ]
>
> > while looking at the issue reported by Minchan [1] I have noticed that
> > there is nothing to prevent fr
On Wed, Dec 09, 2015 at 02:02:05PM +0100, Michal Hocko wrote:
> Hi Kirill,
[ sorry for late reply, just back from vacation. ]
> while looking at the issue reported by Minchan [1] I have noticed that
> there is nothing to prevent from "isolating" a tail page from LRU because
> isolate_lru_page che
Hi Kirill,
while looking at the issue reported by Minchan [1] I have noticed that
there is nothing to prevent from "isolating" a tail page from LRU because
isolate_lru_page checks PageLRU which is
PAGEFLAG(LRU, lru, PF_HEAD)
so it is checked on the head page rather than the given page directly
but
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