The patch titled
Subject: mm, memory_hotplug/failure: drain single zone pcplists
has been added to the -mm tree. Its filename is
mm-memory_hotplug-failure-drain-single-zone-pcplists.patch
This patch should soon appear at
http://ozlabs.org/~akpm/mmots/broken-out/mm-memory_hotplug-failure-drain-single-zone-pcplists.patch
and later at
http://ozlabs.org/~akpm/mmotm/broken-out/mm-memory_hotplug-failure-drain-single-zone-pcplists.patch
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------------------------------------------------------
From: Vlastimil Babka <vbabka@xxxxxxx>
Subject: mm, memory_hotplug/failure: drain single zone pcplists
Memory hotplug and failure mechanisms have several places where pcplists
are drained so that pages are returned to the buddy allocator and can be
e.g. prepared for offlining. This is always done in the context of a
single zone, we can reduce the pcplists drain to the single zone, which is
now possible.
The change should make memory offlining due to hotremove or failure faster
and not disturbing unrelated pcplists anymore.
Signed-off-by: Vlastimil Babka <vbabka@xxxxxxx>
Cc: Naoya Horiguchi <n-horiguchi@xxxxxxxxxxxxx>
Cc: Mel Gorman <mgorman@xxxxxxx>
Cc: Rik van Riel <riel@xxxxxxxxxx>
Cc: Yasuaki Ishimatsu <isimatu.yasuaki@xxxxxxxxxxxxxx>
Cc: Zhang Yanfei <zhangyanfei@xxxxxxxxxxxxxx>
Cc: Xishi Qiu <qiuxishi@xxxxxxxxxx>
Cc: Vladimir Davydov <vdavydov@xxxxxxxxxxxxx>
Cc: Joonsoo Kim <iamjoonsoo.kim@xxxxxxx>
Cc: Michal Nazarewicz <mina86@xxxxxxxxxx>
Cc: Marek Szyprowski <m.szyprowski@xxxxxxxxxxx>
Signed-off-by: Andrew Morton <akpm@xxxxxxxxxxxxxxxxxxxx>
---
mm/memory-failure.c | 4 ++--
mm/memory_hotplug.c | 4 ++--
2 files changed, 4 insertions(+), 4 deletions(-)
diff -puN mm/memory-failure.c~mm-memory_hotplug-failure-drain-single-zone-pcplists mm/memory-failure.c
--- a/mm/memory-failure.c~mm-memory_hotplug-failure-drain-single-zone-pcplists
+++ a/mm/memory-failure.c
@@ -233,7 +233,7 @@ void shake_page(struct page *p, int acce
lru_add_drain_all();
if (PageLRU(p))
return;
- drain_all_pages(NULL);
+ drain_all_pages(page_zone(p));
if (PageLRU(p) || is_free_buddy_page(p))
return;
}
@@ -1661,7 +1661,7 @@ static int __soft_offline_page(struct pa
if (!is_free_buddy_page(page))
lru_add_drain_all();
if (!is_free_buddy_page(page))
- drain_all_pages(NULL);
+ drain_all_pages(page_zone(page));
SetPageHWPoison(page);
if (!is_free_buddy_page(page))
pr_info("soft offline: %#lx: page leaked\n",
diff -puN mm/memory_hotplug.c~mm-memory_hotplug-failure-drain-single-zone-pcplists mm/memory_hotplug.c
--- a/mm/memory_hotplug.c~mm-memory_hotplug-failure-drain-single-zone-pcplists
+++ a/mm/memory_hotplug.c
@@ -1699,7 +1699,7 @@ repeat:
if (drain) {
lru_add_drain_all();
cond_resched();
- drain_all_pages(NULL);
+ drain_all_pages(zone);
}
pfn = scan_movable_pages(start_pfn, end_pfn);
@@ -1721,7 +1721,7 @@ repeat:
lru_add_drain_all();
yield();
/* drain pcp pages, this is synchronous. */
- drain_all_pages(NULL);
+ drain_all_pages(zone);
/*
* dissolve free hugepages in the memory block before doing offlining
* actually in order to make hugetlbfs's object counting consistent.
_
Patches currently in -mm which might be from vbabka@xxxxxxx are
origin.patch
mm-compaction-avoid-premature-range-skip-in-isolate_migratepages_range.patch
mm-introduce-single-zone-pcplists-drain.patch
mm-page_isolation-drain-single-zone-pcplists.patch
mm-cma-drain-single-zone-pcplists.patch
mm-memory_hotplug-failure-drain-single-zone-pcplists.patch
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