From: Chen Gang <xili_gchen_5257@hotmail.com>
To: Andrew Morton <akpm@linux-foundation.org>,
"kirill.shutemov@linux.intel.com"
<kirill.shutemov@linux.intel.com>,
"riel@redhat.com" <riel@redhat.com>,
Michal Hocko <mhocko@suse.cz>,
"oleg@redhat.com" <oleg@redhat.com>,
"asha.levin@oracle.com" <asha.levin@oracle.com>,
"pfeiner@google.com" <pfeiner@google.com>,
"aarcange@redhat.com" <aarcange@redhat.com>,
"vishnu.ps@samsung.com" <vishnu.ps@samsung.com>,
Linux Memory <linux-mm@kvack.org>,
kernel mailing list <linux-kernel@vger.kernel.org>
Subject: [PATCH] mm/mmap.c: Remove redundant vma looping
Date: Sun, 4 Oct 2015 03:38:48 +0800 [thread overview]
Message-ID: <COL130-W38E921DBAB9CFCFCC45F73B94A0@phx.gbl> (raw)
[-- Attachment #1: Type: text/plain, Size: 965 bytes --]
>From 36dbcc145819655682f80efd49e72b01515b4e9a Mon Sep 17 00:00:00 2001
From: Chen Gang <gang.chen.5i5j@gmail.com>
Date: Sun, 4 Oct 2015 03:22:41 +0800
Subject: [PATCH] mm/mmap.c: Remove redundant vma looping
vma->vm_file->f_mapping and vma->anon_vma are shared with the same vma
looping, so merge them.
Signed-off-by: Chen Gang <gang.chen.5i5j@gmail.com>
---
mm/mmap.c | 2 --
1 file changed, 2 deletions(-)
diff --git a/mm/mmap.c b/mm/mmap.c
index 8393580..f7c1631 100644
--- a/mm/mmap.c
+++ b/mm/mmap.c
@@ -3201,9 +3201,7 @@ int mm_take_all_locks(struct mm_struct *mm)
goto out_unlock;
if (vma->vm_file && vma->vm_file->f_mapping)
vm_lock_mapping(mm, vma->vm_file->f_mapping);
- }
- for (vma = mm->mmap; vma; vma = vma->vm_next) {
if (signal_pending(current))
goto out_unlock;
if (vma->anon_vma)
--
1.9.3
Chen Gang
Open, share, and attitude like air, water, and life which God blessed
[-- Attachment #2: 0001-mm-mmap.c-Remove-redundant-vma-looping.patch --]
[-- Type: application/octet-stream, Size: 836 bytes --]
From 36dbcc145819655682f80efd49e72b01515b4e9a Mon Sep 17 00:00:00 2001
From: Chen Gang <gang.chen.5i5j@gmail.com>
Date: Sun, 4 Oct 2015 03:22:41 +0800
Subject: [PATCH] mm/mmap.c: Remove redundant vma looping
vma->vm_file->f_mapping and vma->anon_vma are shared with the same vma
looping, so merge them.
Signed-off-by: Chen Gang <gang.chen.5i5j@gmail.com>
---
mm/mmap.c | 2 --
1 file changed, 2 deletions(-)
diff --git a/mm/mmap.c b/mm/mmap.c
index 8393580..f7c1631 100644
--- a/mm/mmap.c
+++ b/mm/mmap.c
@@ -3201,9 +3201,7 @@ int mm_take_all_locks(struct mm_struct *mm)
goto out_unlock;
if (vma->vm_file && vma->vm_file->f_mapping)
vm_lock_mapping(mm, vma->vm_file->f_mapping);
- }
- for (vma = mm->mmap; vma; vma = vma->vm_next) {
if (signal_pending(current))
goto out_unlock;
if (vma->anon_vma)
--
1.9.3
next reply other threads:[~2015-10-03 19:38 UTC|newest]
Thread overview: 5+ messages / expand[flat|nested] mbox.gz Atom feed top
2015-10-03 19:38 Chen Gang [this message]
2015-10-03 20:09 ` Richard Weinberger
2015-10-04 4:55 ` Chen Gang
2015-10-04 17:26 ` Andrea Arcangeli
2015-10-05 12:23 ` Chen Gang
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