Subject: + revert-mm-memory-hotplug-fix-lowmem-count-overflow-when-offline-pages.patch added to -mm tree
To: jy0922.shim@xxxxxxxxxxx,b.zolnierkie@xxxxxxxxxxx,kosaki.motohiro@xxxxxxxxxxxxxx,liuj97@xxxxxxxxx,liwanp@xxxxxxxxxxxxxxxxxx
From: akpm@xxxxxxxxxxxxxxxxxxxx
Date: Fri, 13 Sep 2013 14:00:35 -0700
The patch titled
Subject: revert "mm/memory-hotplug: fix lowmem count overflow when offline pages"
has been added to the -mm tree. Its filename is
revert-mm-memory-hotplug-fix-lowmem-count-overflow-when-offline-pages.patch
This patch should soon appear at
http://ozlabs.org/~akpm/mmots/broken-out/revert-mm-memory-hotplug-fix-lowmem-count-overflow-when-offline-pages.patch
and later at
http://ozlabs.org/~akpm/mmotm/broken-out/revert-mm-memory-hotplug-fix-lowmem-count-overflow-when-offline-pages.patch
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------------------------------------------------------
From: Joonyoung Shim <jy0922.shim@xxxxxxxxxxx>
Subject: revert "mm/memory-hotplug: fix lowmem count overflow when offline pages"
This reverts commit cea27eb2a202 ("mm/memory-hotplug: fix lowmem count
overflow when offline pages").
The fixed bug by commit cea27eb was fixed to another way by commit 3dcc057
("mm: correctly update zone->managed_pages"). The commit 3dcc057 enhances
memory_hotplug.c to adjust totalhigh_pages when hot-removing memory, for
details please refer to:
http://marc.info/?l=linux-mm&m=136957578620221&w=2
So, if not revert commit cea27eb, currently causes duplicated decreasing
of totalhigh_pages.
Signed-off-by: Joonyoung Shim <jy0922.shim@xxxxxxxxxxx>
Reviewed-by: Wanpeng Li <liwanp@xxxxxxxxxxxxxxxxxx>
Cc: Jiang Liu <liuj97@xxxxxxxxx>
Cc: KOSAKI Motohiro <kosaki.motohiro@xxxxxxxxxxxxxx>
Cc: Bartlomiej Zolnierkiewicz <b.zolnierkie@xxxxxxxxxxx>
Signed-off-by: Andrew Morton <akpm@xxxxxxxxxxxxxxxxxxxx>
---
mm/page_alloc.c | 4 ----
1 file changed, 4 deletions(-)
diff -puN mm/page_alloc.c~revert-mm-memory-hotplug-fix-lowmem-count-overflow-when-offline-pages mm/page_alloc.c
--- a/mm/page_alloc.c~revert-mm-memory-hotplug-fix-lowmem-count-overflow-when-offline-pages
+++ a/mm/page_alloc.c
@@ -6366,10 +6366,6 @@ __offline_isolated_pages(unsigned long s
list_del(&page->lru);
rmv_page_order(page);
zone->free_area[order].nr_free--;
-#ifdef CONFIG_HIGHMEM
- if (PageHighMem(page))
- totalhigh_pages -= 1 << order;
-#endif
for (i = 0; i < (1 << order); i++)
SetPageReserved((page+i));
pfn += (1 << order);
_
Patches currently in -mm which might be from jy0922.shim@xxxxxxxxxxx are
origin.patch
revert-mm-memory-hotplug-fix-lowmem-count-overflow-when-offline-pages.patch
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