include/linux/hugetlb.h: use bool instead of int for hugepage_migration_supported()

It is used as a pure bool function within kernel source wide.

Signed-off-by: Chen Gang <gang.chen.5i5j@gmail.com>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>

diff --git a/include/linux/hugetlb.h b/include/linux/hugetlb.h
index 7ef4b635015db6ef4f8c0f90b6bf5e6569379d64..c26d4638f665e4caed44686fab6ac67bfa6c336c 100644 (file)
--- a/include/linux/hugetlb.h
+++ b/include/linux/hugetlb.h
@@ -452,12 +452,12 @@ static inline pgoff_t basepage_index(struct page *page)
 
 extern void dissolve_free_huge_pages(unsigned long start_pfn,
                                     unsigned long end_pfn);
-static inline int hugepage_migration_supported(struct hstate *h)
+static inline bool hugepage_migration_supported(struct hstate *h)
 {
 #ifdef CONFIG_ARCH_ENABLE_HUGEPAGE_MIGRATION
        return huge_page_shift(h) == PMD_SHIFT;
 #else
-       return 0;
+       return false;
 #endif
 }
 
@@ -519,7 +519,7 @@ static inline pgoff_t basepage_index(struct page *page)
        return page->index;
 }
 #define dissolve_free_huge_pages(s, e) do {} while (0)
-#define hugepage_migration_supported(h)        0
+#define hugepage_migration_supported(h)        false
 
 static inline spinlock_t *huge_pte_lockptr(struct hstate *h,
                                           struct mm_struct *mm, pte_t *pte)