linux-kernel - [PATCH] mm: change the type to bool for page_has

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Message-ID: <1663210600-29258-1-git-send-email-zhaoyang.huang@unisoc.com>
Date:   Thu, 15 Sep 2022 10:56:40 +0800
From:   "zhaoyang.huang" <zhaoyang.huang@...soc.com>
To:     Andrew Morton <akpm@...ux-foundation.org>,
        Zhaoyang Huang <huangzhaoyang@...il.com>, <linux-mm@...ck.org>,
        <linux-kernel@...r.kernel.org>, <ke.wang@...soc.com>
Subject: [PATCH] mm: change the type to bool for page_has_xxx's val

From: Zhaoyang Huang <zhaoyang.huang@...soc.com>

It is proper to return bool value for such functions

Signed-off-by: Zhaoyang Huang <zhaoyang.huang@...soc.com>
---
 include/linux/page-flags.h | 6 +++---
 1 file changed, 3 insertions(+), 3 deletions(-)

diff --git a/include/linux/page-flags.h b/include/linux/page-flags.h
index e66f7aa..9a46c8b 100644
--- a/include/linux/page-flags.h
+++ b/include/linux/page-flags.h
@@ -946,9 +946,9 @@ static inline bool is_page_hwpoison(struct page *page)
 #define PageType(page, flag)						\
 	((page->page_type & (PAGE_TYPE_BASE | flag)) == PAGE_TYPE_BASE)
 
-static inline int page_has_type(struct page *page)
+static inline bool page_has_type(struct page *page)
 {
-	return (int)page->page_type < PAGE_MAPCOUNT_RESERVE;
+	return !!((int)page->page_type < PAGE_MAPCOUNT_RESERVE);
 }
 
 #define PAGE_TYPE_OPS(uname, lname)					\
@@ -1081,7 +1081,7 @@ static __always_inline void __ClearPageAnonExclusive(struct page *page)
  * Determine if a page has private stuff, indicating that release routines
  * should be invoked upon it.
  */
-static inline int page_has_private(struct page *page)
+static inline bool page_has_private(struct page *page)
 {
 	return !!(page->flags & PAGE_FLAGS_PRIVATE);
 }
-- 
1.9.1