From 31fea48e3b6f8a686c3ee13cc99ec6041314b313 Mon Sep 17 00:00:00 2001
From: Tang Yizhou <tangyizhou@huawei.com>
Date: Sat, 30 Oct 2021 11:08:59 +0800
Subject: [PATCH] share_pool: Fix compilation error of do_mm_populate()

ascend inclusion
category: bugfix
bugzilla: https://gitee.com/openeuler/kernel/issues/I4EUVI
CVE: NA

-------------------------------------------------

do_mm_populate() should return an error number.

Signed-off-by: Tang Yizhou <tangyizhou@huawei.com>
Reviewed-by: Kefeng Wang <wangkefeng.wang@huawei.com>
Reviewed-by: Ding Tianhong <dingtianhong@huawei.com>
Signed-off-by: Yang Yingliang <yangyingliang@huawei.com>
Reviewed-by: Weilong Chen <chenweilong@huawei.com>
Signed-off-by: Yang Yingliang <yangyingliang@huawei.com>
---
 include/linux/mm.h | 5 +++--
 1 file changed, 3 insertions(+), 2 deletions(-)

diff --git a/include/linux/mm.h b/include/linux/mm.h
index e4a20206c3f3..7ee7214f17be 100644
--- a/include/linux/mm.h
+++ b/include/linux/mm.h
@@ -2448,9 +2448,10 @@ extern int do_mm_populate(struct mm_struct *mm, unsigned long addr, unsigned lon
 			  int ignore_errors);
 #else
 static inline void mm_populate(unsigned long addr, unsigned long len) {}
-int do_mm_populate(struct mm_struct *mm, unsigned long addr, unsigned long len,
-		   int ignore_errors)
+static inline int do_mm_populate(struct mm_struct *mm, unsigned long addr,
+				 unsigned long len, int ignore_errors)
 {
+	return -EPERM;
 }
 #endif
 
-- 
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