linux-kernel - [PATCH 1/2] mm/mmap.c: Remove redundant variable 'addr' in arch_get_unmapped_area

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Date:   Sun, 20 Jan 2019 09:13:24 +0100
From:   Yang Fan <nullptr.cpp@...il.com>
To:     akpm@...ux-foundation.org, will.deacon@....com
Cc:     Yang Fan <nullptr.cpp@...il.com>, linux-mm@...ck.org,
        linux-kernel@...r.kernel.org
Subject: [PATCH 1/2] mm/mmap.c: Remove redundant variable 'addr' in arch_get_unmapped_area_topdown()

The variable 'addr' is redundant in arch_get_unmapped_area_topdown(), 
just use parameter 'addr0' directly. Then remove the const qualifier 
of the parameter, and change its name to 'addr'.

Signed-off-by: Yang Fan <nullptr.cpp@...il.com>
---
 mm/mmap.c | 3 +--
 1 file changed, 1 insertion(+), 2 deletions(-)

diff --git a/mm/mmap.c b/mm/mmap.c
index f901065c4c64..f2d163ac827a 100644
--- a/mm/mmap.c
+++ b/mm/mmap.c
@@ -2126,13 +2126,12 @@ arch_get_unmapped_area(struct file *filp, unsigned long addr,
  */
 #ifndef HAVE_ARCH_UNMAPPED_AREA_TOPDOWN
 unsigned long
-arch_get_unmapped_area_topdown(struct file *filp, const unsigned long addr0,
+arch_get_unmapped_area_topdown(struct file *filp, unsigned long addr,
 			  const unsigned long len, const unsigned long pgoff,
 			  const unsigned long flags)
 {
 	struct vm_area_struct *vma, *prev;
 	struct mm_struct *mm = current->mm;
-	unsigned long addr = addr0;
 	struct vm_unmapped_area_info info;
 	const unsigned long mmap_end = arch_get_mmap_end(addr);
 
-- 
2.17.1