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Date: Fri, 15 Sep 2017 22:53:49 -0400 From: YASUAKI ISHIMATSU <yasu.isimatu@...il.com> To: linux-mm@...ck.org Cc: Michal Hocko <mhocko@...e.com>, qiuxishi@...wei.com, arbab@...ux.vnet.ibm.com, vbabka@...e.cz, linux-kernel@...r.kernel.org Subject: [PATCH 2/2] mm/memory_hotplug: define find_{smallest|biggest}_section_pfn as unsigned long find_{smallest|biggest}_section_pfn()s find the smallest/biggest section and return the pfn of the section. But the functions are defined as int. So the functions always return 0x00000000 - 0xffffffff. It means if memory address is over 16TB, the functions does not work correctly. To handle 64 bit value, the patch defines find_{smallest|biggest}_section_pfn() as unsigned long. Signed-off-by: Yasuaki Ishimatsu <isimatu.yasuaki@...fujitsu.com> --- mm/memory_hotplug.c | 4 ++-- 1 file changed, 2 insertions(+), 2 deletions(-) diff --git a/mm/memory_hotplug.c b/mm/memory_hotplug.c index 38c3c37..120e45b 100644 --- a/mm/memory_hotplug.c +++ b/mm/memory_hotplug.c @@ -582,7 +582,7 @@ int __ref __add_pages(int nid, struct zone *zone, unsigned long phys_start_pfn, #ifdef CONFIG_MEMORY_HOTREMOVE /* find the smallest valid pfn in the range [start_pfn, end_pfn) */ -static int find_smallest_section_pfn(int nid, struct zone *zone, +static unsigned long find_smallest_section_pfn(int nid, struct zone *zone, unsigned long start_pfn, unsigned long end_pfn) { @@ -607,7 +607,7 @@ static int find_smallest_section_pfn(int nid, struct zone *zone, } /* find the biggest valid pfn in the range [start_pfn, end_pfn). */ -static int find_biggest_section_pfn(int nid, struct zone *zone, +static unsigned long find_biggest_section_pfn(int nid, struct zone *zone, unsigned long start_pfn, unsigned long end_pfn) { -- 1.8.3.1
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