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memcg: bugfix for memory hotplug

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The start pfn calculation in page_cgroup's memory hotplug notifier chain
is wrong.

Tested-by: Badari Pulavarty <[email protected]>
Signed-off-by: KAMEZAWA Hiroyuki <[email protected]>
Signed-off-by: Andrew Morton <[email protected]>
Signed-off-by: Linus Torvalds <[email protected]>
This commit is contained in:
KAMEZAWA Hiroyuki 2008-11-12 13:27:01 -08:00 • committed by Linus Torvalds
commit 33c5d3d645
1 changed files with 2 additions and 2 deletions
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4
mm/page_cgroup.c
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@ -165,7 +165,7 @@ int online_page_cgroup(unsigned long start_pfn,
unsigned long start, end, pfn;
int fail = 0;
start = start_pfn & (PAGES_PER_SECTION - 1);
start = start_pfn & ~(PAGES_PER_SECTION - 1);
end = ALIGN(start_pfn + nr_pages, PAGES_PER_SECTION);
for (pfn = start; !fail && pfn < end; pfn += PAGES_PER_SECTION) {
@ -188,7 +188,7 @@ int offline_page_cgroup(unsigned long start_pfn,
{
unsigned long start, end, pfn;
start = start_pfn & (PAGES_PER_SECTION - 1);
start = start_pfn & ~(PAGES_PER_SECTION - 1);
end = ALIGN(start_pfn + nr_pages, PAGES_PER_SECTION);
for (pfn = start; pfn < end; pfn += PAGES_PER_SECTION)