> -----Original Message----- > From: Minchan Kim [mailto:minchan@xxxxxxxxxx] > Sent: Monday, June 23, 2014 2:16 AM > To: Johannes Weiner > Cc: Andrew Morton; Mel Gorman; Rik van Riel; Michal Hocko; linux-mm@xxxxxxxxx; linux-kernel@xxxxxxxxxxxxxxx; Motohiro Kosaki JP > Subject: Re: [patch 1/4] mm: vmscan: remove remains of kswapd-managed zone->all_unreclaimable > > On Fri, Jun 20, 2014 at 12:33:47PM -0400, Johannes Weiner wrote: > > shrink_zones() has a special branch to skip the all_unreclaimable() > > check during hibernation, because a frozen kswapd can't mark a zone > > unreclaimable. > > > > But ever since 6e543d5780e3 ("mm: vmscan: fix do_try_to_free_pages() > > livelock"), determining a zone to be unreclaimable is done by directly > > looking at its scan history and no longer relies on kswapd setting the > > per-zone flag. > > > > Remove this branch and let shrink_zones() check the reclaimability of > > the target zones regardless of hibernation state. > > > > Signed-off-by: Johannes Weiner <hannes@xxxxxxxxxxx> > Acked-by: Minchan Kim <minchan@xxxxxxxxxx> > > It would be not bad to Cced KOSAKI who was involved all_unreclaimable series several time with me. Looks good to me. KOSAKI Motohiro <Kosaki.motohiro@xxxxxxxxxxxxxx> ��.n������g��� �a��� �&ޖ)���)��h���&������梷���� �Ǟ�m������)������^�����������v���O��zf������