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authorYaowei Bai <baiyaowei@cmss.chinamobile.com>2016-01-15 02:19:11 +0300
committerLinus Torvalds <torvalds@linux-foundation.org>2016-01-15 03:00:49 +0300
commit5b80287a65da927742c6d43b1369bd5ed133aad1 (patch)
tree2adc3f93d292a663097b02754ef2890ae58623fe
parent6219c2a2ec990f80a586216172c811a9099c5cdf (diff)
downloadlinux-5b80287a65da927742c6d43b1369bd5ed133aad1.tar.xz
mm/mmzone.c: memmap_valid_within() can be boolean
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>
-rw-r--r--include/linux/mmzone.h6
-rw-r--r--mm/mmzone.c8
2 files changed, 7 insertions, 7 deletions
diff --git a/include/linux/mmzone.h b/include/linux/mmzone.h
index 12c98dfc31b1..3b6fb71bbeb3 100644
--- a/include/linux/mmzone.h
+++ b/include/linux/mmzone.h
@@ -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
* 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);
#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)
{
- return 1;
+ return true;
}
#endif /* CONFIG_ARCH_HAS_HOLES_MEMORYMODEL */
diff --git a/mm/mmzone.c b/mm/mmzone.c
index 7d87ebb0d632..52687fb4de6f 100644
--- a/mm/mmzone.c
+++ b/mm/mmzone.c
@@ -72,16 +72,16 @@ struct zoneref *next_zones_zonelist(struct zoneref *z,
}
#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)
{
if (page_to_pfn(page) != pfn)
- return 0;
+ return false;
if (page_zone(page) != zone)
- return 0;
+ return false;
- return 1;
+ return true;
}
#endif /* CONFIG_ARCH_HAS_HOLES_MEMORYMODEL */