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[PATCH 1/2] mmotm: mm-oom-rework-oom-detection-fix

From Michal Hocko <mhocko@kernel.org>
Newsgroups linux.kernel
Subject [PATCH 1/2] mmotm: mm-oom-rework-oom-detection-fix
Date 2016-05-12 13:20 +0200
Message-ID <rxWOS-4u5-31@gated-at.bofh.it> (permalink)
References <rxWOR-4u5-3@gated-at.bofh.it>
Organization linux.* mail to news gateway

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From: Michal Hocko <mhocko@suse.com>

watermark check should use classzone_idx rather than high_zoneidx
to check reserves against the correct (preferred) zone.

Signed-off-by: Michal Hocko <mhocko@suse.com>
---
 mm/page_alloc.c | 2 +-
 1 file changed, 1 insertion(+), 1 deletion(-)

diff --git a/mm/page_alloc.c b/mm/page_alloc.c
index 0d9008042efa..620ec002aea2 100644
--- a/mm/page_alloc.c
+++ b/mm/page_alloc.c
@@ -3496,7 +3496,7 @@ should_reclaim_retry(gfp_t gfp_mask, unsigned order,
 		 * available?
 		 */
 		if (__zone_watermark_ok(zone, order, min_wmark_pages(zone),
-				ac->high_zoneidx, alloc_flags, available)) {
+				ac_classzone_idx(ac), alloc_flags, available)) {
 			/*
 			 * If we didn't make any progress and have a lot of
 			 * dirty + writeback pages then we should wait for
-- 
2.8.1

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Thread

[PATCH 0/2] oom detection fixups Michal Hocko <mhocko@kernel.org> - 2016-05-12 13:20 +0200
  [PATCH 2/2] mm, oom: protect !costly allocations some more for !CONFIG_COMPACTION Michal Hocko <mhocko@kernel.org> - 2016-05-12 13:20 +0200
    Re: [PATCH 2/2] mm, oom: protect !costly allocations some more for !CONFIG_COMPACTION "Hillf Danton" <hillf.zj@alibaba-inc.com> - 2016-05-13 06:20 +0200
  [PATCH 1/2] mmotm: mm-oom-rework-oom-detection-fix Michal Hocko <mhocko@kernel.org> - 2016-05-12 13:20 +0200
    Re: [PATCH 1/2] mmotm: mm-oom-rework-oom-detection-fix "Hillf Danton" <hillf.zj@alibaba-inc.com> - 2016-05-13 06:10 +0200

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