linux-kernel - [PATCH-next] mm/mempolicy: use PAGE

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Message-ID: <20220913015505.1998958-1-zuoze1@huawei.com>
Date:   Tue, 13 Sep 2022 01:55:05 +0000
From:   Ze Zuo <zuoze1@...wei.com>
To:     <akpm@...ux-foundation.org>
CC:     <linux-mm@...ck.org>, <linux-kernel@...r.kernel.org>,
        <wangkefeng.wang@...wei.com>, ze zuo <zuoze1@...wei.com>
Subject: [PATCH-next] mm/mempolicy: use PAGE_ALIGN instead of open-coding it

From: ze zuo <zuoze1@...wei.com>

Replace the simple calculation with PAGE_ALIGN.

Signed-off-by: ze zuo <zuoze1@...wei.com>
---
 mm/mempolicy.c | 4 ++--
 1 file changed, 2 insertions(+), 2 deletions(-)

diff --git a/mm/mempolicy.c b/mm/mempolicy.c
index 143e2eaaa6ec..a937eaec5b68 100644
--- a/mm/mempolicy.c
+++ b/mm/mempolicy.c
@@ -1270,7 +1270,7 @@ static long do_mbind(unsigned long start, unsigned long len,
 	if (mode == MPOL_DEFAULT)
 		flags &= ~MPOL_MF_STRICT;
 
-	len = (len + PAGE_SIZE - 1) & PAGE_MASK;
+	len = PAGE_ALIGN(len);
 	end = start + len;
 
 	if (end < start)
@@ -1507,7 +1507,7 @@ SYSCALL_DEFINE4(set_mempolicy_home_node, unsigned long, start, unsigned long, le
 	if (home_node >= MAX_NUMNODES || !node_online(home_node))
 		return -EINVAL;
 
-	len = (len + PAGE_SIZE - 1) & PAGE_MASK;
+	len = PAGE_ALIGN(len);
 	end = start + len;
 
 	if (end < start)
-- 
2.25.1