The patch titled
Subject: mm: vmscan: remove remains of kswapd-managed zone->all_unreclaimable
has been removed from the -mm tree. Its filename was
mm-vmscan-remove-remains-of-kswapd-managed-zone-all_unreclaimable.patch
This patch was dropped because it was merged into mainline or a subsystem tree
------------------------------------------------------
From: Johannes Weiner <hannes@xxxxxxxxxxx>
Subject: mm: vmscan: remove remains of kswapd-managed zone->all_unreclaimable
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: Mel Gorman <mgorman@xxxxxxx>
Cc: Rik van Riel <riel@xxxxxxxxxx>
Acked-by: Michal Hocko <mhocko@xxxxxxx>
Cc: Vlastimil Babka <vbabka@xxxxxxx>
Acked-by: Minchan Kim <minchan@xxxxxxxxxx>
Cc: KOSAKI Motohiro <Kosaki.motohiro@xxxxxxxxxxxxxx>
Signed-off-by: Andrew Morton <akpm@xxxxxxxxxxxxxxxxxxxx>
---
mm/vmscan.c | 8 --------
1 file changed, 8 deletions(-)
diff -puN mm/vmscan.c~mm-vmscan-remove-remains-of-kswapd-managed-zone-all_unreclaimable mm/vmscan.c
--- a/mm/vmscan.c~mm-vmscan-remove-remains-of-kswapd-managed-zone-all_unreclaimable
+++ a/mm/vmscan.c
@@ -2534,14 +2534,6 @@ out:
if (sc->nr_reclaimed)
return sc->nr_reclaimed;
- /*
- * As hibernation is going on, kswapd is freezed so that it can't mark
- * the zone into all_unreclaimable. Thus bypassing all_unreclaimable
- * check.
- */
- if (oom_killer_disabled)
- return 0;
-
/* Aborted reclaim to try compaction? don't OOM, then */
if (aborted_reclaim)
return 1;
_
Patches currently in -mm which might be from hannes@xxxxxxxxxxx are
origin.patch
mm-memcontrol-rewrite-charge-api.patch
mm-memcontrol-rewrite-uncharge-api.patch
mm-memcontrol-use-page-lists-for-uncharge-batching.patch
mm-memcontrol-use-page-lists-for-uncharge-batching-fix-hugetlb-page-lru.patch
page-cgroup-trivial-cleanup.patch
page-cgroup-get-rid-of-nr_pcg_flags.patch
memcg-remove-lookup_cgroup_page-prototype.patch
mm-memcontrol-avoid-charge-statistics-churn-during-page-migration.patch
nilfs2-integrate-sysfs-support-into-driver-fix.patch
linux-next.patch
debugging-keep-track-of-page-owners.patch
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