[ check_move_unevictable_pages() seems weird. It gets a pagevec from
find_get_entries(), which, if I understand the THP page cache code
correctly, might contain the same compound page over and over. It'll
be !unevictable after the first iteration, so will only run once. So
it produc
On 5/20/19 5:43 PM, Yang Shi wrote:
On 5/16/19 11:10 PM, Johannes Weiner wrote:
On Tue, May 14, 2019 at 01:44:35PM -0700, Yang Shi wrote:
On 5/13/19 11:20 PM, Michal Hocko wrote:
On Mon 13-05-19 21:36:59, Yang Shi wrote:
On Mon, May 13, 2019 at 2:45 PM Michal Hocko
wrote:
On Mon 13-05-
On 5/16/19 11:10 PM, Johannes Weiner wrote:
On Tue, May 14, 2019 at 01:44:35PM -0700, Yang Shi wrote:
On 5/13/19 11:20 PM, Michal Hocko wrote:
On Mon 13-05-19 21:36:59, Yang Shi wrote:
On Mon, May 13, 2019 at 2:45 PM Michal Hocko wrote:
On Mon 13-05-19 14:09:59, Yang Shi wrote:
[...]
I t
On Tue, May 14, 2019 at 01:44:35PM -0700, Yang Shi wrote:
> On 5/13/19 11:20 PM, Michal Hocko wrote:
> > On Mon 13-05-19 21:36:59, Yang Shi wrote:
> > > On Mon, May 13, 2019 at 2:45 PM Michal Hocko wrote:
> > > > On Mon 13-05-19 14:09:59, Yang Shi wrote:
> > > > [...]
> > > > > I think we can just
On 5/13/19 11:20 PM, Michal Hocko wrote:
On Mon 13-05-19 21:36:59, Yang Shi wrote:
On Mon, May 13, 2019 at 2:45 PM Michal Hocko wrote:
On Mon 13-05-19 14:09:59, Yang Shi wrote:
[...]
I think we can just account 512 base pages for nr_scanned for
isolate_lru_pages() to make the counters sane
On Mon 13-05-19 21:36:59, Yang Shi wrote:
> On Mon, May 13, 2019 at 2:45 PM Michal Hocko wrote:
> >
> > On Mon 13-05-19 14:09:59, Yang Shi wrote:
> > [...]
> > > I think we can just account 512 base pages for nr_scanned for
> > > isolate_lru_pages() to make the counters sane since PGSCAN_KSWAPD/DI
On Mon, May 13, 2019 at 2:45 PM Michal Hocko wrote:
>
> On Mon 13-05-19 14:09:59, Yang Shi wrote:
> [...]
> > I think we can just account 512 base pages for nr_scanned for
> > isolate_lru_pages() to make the counters sane since PGSCAN_KSWAPD/DIRECT
> > just use it.
> >
> > And, sc->nr_scanned shou
On Mon 13-05-19 14:09:59, Yang Shi wrote:
[...]
> I think we can just account 512 base pages for nr_scanned for
> isolate_lru_pages() to make the counters sane since PGSCAN_KSWAPD/DIRECT
> just use it.
>
> And, sc->nr_scanned should be accounted as 512 base pages too otherwise we
> may have nr_sca
On 5/13/19 1:09 AM, Michal Hocko wrote:
On Sat 11-05-19 00:23:40, Yang Shi wrote:
Since commit bd4c82c22c36 ("mm, THP, swap: delay splitting THP after
swapped out"), THP can be swapped out in a whole. But, nr_reclaimed
still gets inc'ed by one even though a whole THP (512 pages) gets
swapped
On Sat 11-05-19 00:23:40, Yang Shi wrote:
> Since commit bd4c82c22c36 ("mm, THP, swap: delay splitting THP after
> swapped out"), THP can be swapped out in a whole. But, nr_reclaimed
> still gets inc'ed by one even though a whole THP (512 pages) gets
> swapped out.
>
> This doesn't make too much
Since commit bd4c82c22c36 ("mm, THP, swap: delay splitting THP after
swapped out"), THP can be swapped out in a whole. But, nr_reclaimed
still gets inc'ed by one even though a whole THP (512 pages) gets
swapped out.
This doesn't make too much sense to memory reclaim. For example, direct
reclaim
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