linux-kernel - [PATCH -next] mm/madvise: Remove set but not used variable 'zone'

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Message-ID: <20200917071757.1915501-1-liushixin2@huawei.com>
Date:   Thu, 17 Sep 2020 15:17:57 +0800
From:   Liu Shixin <liushixin2@...wei.com>
To:     Andrew Morton <akpm@...ux-foundation.org>
CC:     <linux-mm@...ck.org>, <linux-kernel@...r.kernel.org>,
        Liu Shixin <liushixin2@...wei.com>
Subject: [PATCH -next] mm/madvise: Remove set but not used variable 'zone'

Fixes gcc '-Wunused-but-set-variable' warning:

mm/madvise.c: In function 'madvise_inject_error':
mm/madvise.c:882:15: warning: unused variable 'zone' [-Wunused-variable]

After 4b63fdbe2b25 ("mm: remove the now-unnecessary mmget_still_valid()
hack"), variable 'zone' is never used. Remove it to avoid build warning.

Signed-off-by: Liu Shixin <liushixin2@...wei.com>
---
 mm/madvise.c | 1 -
 1 file changed, 1 deletion(-)

diff --git a/mm/madvise.c b/mm/madvise.c
index 460e19d60ba3..94b9d17331b9 100644
--- a/mm/madvise.c
+++ b/mm/madvise.c
@@ -879,7 +879,6 @@ static long madvise_remove(struct vm_area_struct *vma,
 static int madvise_inject_error(int behavior,
 		unsigned long start, unsigned long end)
 {
-	struct zone *zone;
 	unsigned long size;
 
 	if (!capable(CAP_SYS_ADMIN))
-- 
2.25.1