[PATCH 2/5] mm/memory_hotplug: is_mem_section_removable can be boolean

[Yaowei Bai]

This patch makes is_mem_section_removable return bool to improve
readability due to this particular function only using either
one or zero as its return value.

No functional change.

Signed-off-by: Yaowei Bai <baiyao...@cmss.chinamobile.com>
---
 include/linux/memory_hotplug.h | 6 +++---
 mm/memory_hotplug.c            | 6 +++---
 2 files changed, 6 insertions(+), 6 deletions(-)

diff --git a/include/linux/memory_hotplug.h b/include/linux/memory_hotplug.h
index adbef58..20d8a5d 100644
--- a/include/linux/memory_hotplug.h
+++ b/include/linux/memory_hotplug.h
@@ -247,16 +247,16 @@ static inline void mem_hotplug_done(void) {}
 
 #ifdef CONFIG_MEMORY_HOTREMOVE
 
-extern int is_mem_section_removable(unsigned long pfn, unsigned long nr_pages);
+extern bool is_mem_section_removable(unsigned long pfn, unsigned long 
nr_pages);
 extern void try_offline_node(int nid);
 extern int offline_pages(unsigned long start_pfn, unsigned long nr_pages);
 extern void remove_memory(int nid, u64 start, u64 size);
 
 #else
-static inline int is_mem_section_removable(unsigned long pfn,
+static inline bool is_mem_section_removable(unsigned long pfn,
                                        unsigned long nr_pages)
 {
-       return 0;
+       return false;
 }
 
 static inline void try_offline_node(int nid) {}
diff --git a/mm/memory_hotplug.c b/mm/memory_hotplug.c
index 24ea063..87be160 100644
--- a/mm/memory_hotplug.c
+++ b/mm/memory_hotplug.c
@@ -1406,7 +1406,7 @@ static struct page *next_active_pageblock(struct page 
*page)
 }
 
 /* Checks if this range of memory is likely to be hot-removable. */
-int is_mem_section_removable(unsigned long start_pfn, unsigned long nr_pages)
+bool is_mem_section_removable(unsigned long start_pfn, unsigned long nr_pages)
 {
        struct page *page = pfn_to_page(start_pfn);
        struct page *end_page = page + nr_pages;
@@ -1414,12 +1414,12 @@ int is_mem_section_removable(unsigned long start_pfn, 
unsigned long nr_pages)
        /* Check the starting page of each pageblock within the range */
        for (; page < end_page; page = next_active_pageblock(page)) {
                if (!is_pageblock_removable_nolock(page))
-                       return 0;
+                       return false;
                cond_resched();
        }
 
        /* All pageblocks in the memory block are likely to be hot-removable */
-       return 1;
+       return true;
 }
 
 /*
-- 
1.9.1