linux-kernel - [PATCH 3/5] mm/vmalloc: is_vmalloc

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Date:	Wed, 23 Mar 2016 10:26:07 +0800
From:	Yaowei Bai <baiyaowei@...s.chinamobile.com>
To:	akpm@...ux-foundation.org
Cc:	n-horiguchi@...jp.nec.com, kirill.shutemov@...ux.intel.com,
	rientjes@...gle.com, iamjoonsoo.kim@....com, hannes@...xchg.org,
	vdavydov@...tuozzo.com, kuleshovmail@...il.com, vbabka@...e.cz,
	mgorman@...hsingularity.net, linux-mm@...ck.org,
	linux-kernel@...r.kernel.org, baiyaowei@...s.chinamobile.com
Subject: [PATCH 3/5] mm/vmalloc: is_vmalloc_addr can be boolean

This patch makes is_vmalloc_addr 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 <baiyaowei@...s.chinamobile.com>
---
 include/linux/mm.h | 4 ++--
 1 file changed, 2 insertions(+), 2 deletions(-)

diff --git a/include/linux/mm.h b/include/linux/mm.h
index dbf1edd..826d2fb 100644
--- a/include/linux/mm.h
+++ b/include/linux/mm.h
@@ -400,14 +400,14 @@ unsigned long vmalloc_to_pfn(const void *addr);
  * On nommu, vmalloc/vfree wrap through kmalloc/kfree directly, so there
  * is no special casing required.
  */
-static inline int is_vmalloc_addr(const void *x)
+static inline bool is_vmalloc_addr(const void *x)
 {
 #ifdef CONFIG_MMU
 	unsigned long addr = (unsigned long)x;
 
 	return addr >= VMALLOC_START && addr < VMALLOC_END;
 #else
-	return 0;
+	return false;
 #endif
 }
 #ifdef CONFIG_MMU
-- 
1.9.1