linux-kernel - [PATCH 5/5] mm/mempolicy: vma

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Message-Id: <1458699969-3432-6-git-send-email-baiyaowei@cmss.chinamobile.com>
Date:	Wed, 23 Mar 2016 10:26:09 +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 5/5] mm/mempolicy: vma_migratable can be boolean

This patch makes vma_migratable 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@...s.chinamobile.com>
---
 include/linux/mempolicy.h | 10 +++++-----
 1 file changed, 5 insertions(+), 5 deletions(-)

diff --git a/include/linux/mempolicy.h b/include/linux/mempolicy.h
index 2696c1f..6978a99 100644
--- a/include/linux/mempolicy.h
+++ b/include/linux/mempolicy.h
@@ -172,14 +172,14 @@ extern int mpol_parse_str(char *str, struct mempolicy **mpol);
 extern void mpol_to_str(char *buffer, int maxlen, struct mempolicy *pol);
 
 /* Check if a vma is migratable */
-static inline int vma_migratable(struct vm_area_struct *vma)
+static inline bool vma_migratable(struct vm_area_struct *vma)
 {
 	if (vma->vm_flags & (VM_IO | VM_PFNMAP))
-		return 0;
+		return false;
 
 #ifndef CONFIG_ARCH_ENABLE_HUGEPAGE_MIGRATION
 	if (vma->vm_flags & VM_HUGETLB)
-		return 0;
+		return false;
 #endif
 
 	/*
@@ -190,8 +190,8 @@ static inline int vma_migratable(struct vm_area_struct *vma)
 	if (vma->vm_file &&
 		gfp_zone(mapping_gfp_mask(vma->vm_file->f_mapping))
 								< policy_zone)
-			return 0;
-	return 1;
+			return false;
+	return true;
 }
 
 extern int mpol_misplaced(struct page *, struct vm_area_struct *, unsigned long);
-- 
1.9.1