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mm/mmzone.c: memmap_valid_within() can be boolean

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Make memmap_valid_within return bool due to this particular function
only using either one or zero as its return value.

No functional change.

Signed-off-by: Yaowei Bai <baiyaowei@cmss.chinamobile.com>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
This commit is contained in:
Yaowei Bai 2016-01-14 15:19:11 -08:00 committed by Linus Torvalds
parent 6219c2a2ec
commit 5b80287a65
2 changed files with 7 additions and 7 deletions
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6
include/linux/mmzone.h
View file

@ -1200,13 +1200,13 @@ unsigned long __init node_memmap_size_bytes(int, unsigned long, unsigned long);
* the zone and PFN linkages are still valid. This is expensive, but walkers * the zone and PFN linkages are still valid. This is expensive, but walkers
* of the full memmap are extremely rare. * of the full memmap are extremely rare.
*/ */
int memmap_valid_within(unsigned long pfn, bool memmap_valid_within(unsigned long pfn,
struct page *page, struct zone *zone); struct page *page, struct zone *zone);
#else #else
static inline int memmap_valid_within(unsigned long pfn, static inline bool memmap_valid_within(unsigned long pfn,
struct page *page, struct zone *zone) struct page *page, struct zone *zone)
{ {
return 1; return true;
} }
#endif /* CONFIG_ARCH_HAS_HOLES_MEMORYMODEL */ #endif /* CONFIG_ARCH_HAS_HOLES_MEMORYMODEL */

8
mm/mmzone.c
View file

@ -72,16 +72,16 @@ struct zoneref *next_zones_zonelist(struct zoneref *z,
} }
#ifdef CONFIG_ARCH_HAS_HOLES_MEMORYMODEL #ifdef CONFIG_ARCH_HAS_HOLES_MEMORYMODEL
int memmap_valid_within(unsigned long pfn, bool memmap_valid_within(unsigned long pfn,
struct page *page, struct zone *zone) struct page *page, struct zone *zone)
{ {
if (page_to_pfn(page) != pfn) if (page_to_pfn(page) != pfn)
return 0; return false;
if (page_zone(page) != zone) if (page_zone(page) != zone)
return 0; return false;
return 1; return true;
} }
#endif /* CONFIG_ARCH_HAS_HOLES_MEMORYMODEL */ #endif /* CONFIG_ARCH_HAS_HOLES_MEMORYMODEL */