From: Oleg Nesterov <oleg@redhat.com>
To: Chen Gang <xili_gchen_5257@hotmail.com>
Cc: 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>,
"sasha.levin@oracle.com" <sasha.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: Re: [PATCH] mm/mmap.c: Remove useless statement "vma = NULL" in find_vma()
Date: Mon, 7 Sep 2015 14:36:57 +0200 [thread overview]
Message-ID: <20150907123656.GA32668@redhat.com> (raw)
In-Reply-To: <COL130-W64A6555222F8CEDA513171B9560@phx.gbl>
On 09/05, Chen Gang wrote:
>
> From b12fa5a9263cf4c044988e59f0071f4bcc132215 Mon Sep 17 00:00:00 2001
> From: Chen Gang <gang.chen.5i5j@gmail.com>
> Date: Sat, 5 Sep 2015 21:49:56 +0800
> Subject: [PATCH] mm/mmap.c: Remove useless statement "vma = NULL" in
> find_vma()
>
> Before the main looping, vma is already is NULL, so need not set it to
> NULL, again.
>
> Signed-off-by: Chen Gang <gang.chen.5i5j@gmail.com>
Reviewed-by: Oleg Nesterov <oleg@redhat.com>
> ---
> mm/mmap.c | 1 -
> 1 file changed, 1 deletion(-)
>
> diff --git a/mm/mmap.c b/mm/mmap.c
> index df6d5f0..4db7cf0 100644
> --- a/mm/mmap.c
> +++ b/mm/mmap.c
> @@ -2054,7 +2054,6 @@ struct vm_area_struct *find_vma(struct mm_struct *mm, unsigned long addr)
> return vma;
>
> rb_node = mm->mm_rb.rb_node;
> - vma = NULL;
>
> while (rb_node) {
> struct vm_area_struct *tmp;
> --
> 1.9.3
>
>
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WARNING: multiple messages have this Message-ID (diff)
From: Oleg Nesterov <oleg@redhat.com>
To: Chen Gang <xili_gchen_5257@hotmail.com>
Cc: 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>,
"sasha.levin@oracle.com" <sasha.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: Re: [PATCH] mm/mmap.c: Remove useless statement "vma = NULL" in find_vma()
Date: Mon, 7 Sep 2015 14:36:57 +0200 [thread overview]
Message-ID: <20150907123656.GA32668@redhat.com> (raw)
In-Reply-To: <COL130-W64A6555222F8CEDA513171B9560@phx.gbl>
On 09/05, Chen Gang wrote:
>
> From b12fa5a9263cf4c044988e59f0071f4bcc132215 Mon Sep 17 00:00:00 2001
> From: Chen Gang <gang.chen.5i5j@gmail.com>
> Date: Sat, 5 Sep 2015 21:49:56 +0800
> Subject: [PATCH] mm/mmap.c: Remove useless statement "vma = NULL" in
> find_vma()
>
> Before the main looping, vma is already is NULL, so need not set it to
> NULL, again.
>
> Signed-off-by: Chen Gang <gang.chen.5i5j@gmail.com>
Reviewed-by: Oleg Nesterov <oleg@redhat.com>
> ---
> mm/mmap.c | 1 -
> 1 file changed, 1 deletion(-)
>
> diff --git a/mm/mmap.c b/mm/mmap.c
> index df6d5f0..4db7cf0 100644
> --- a/mm/mmap.c
> +++ b/mm/mmap.c
> @@ -2054,7 +2054,6 @@ struct vm_area_struct *find_vma(struct mm_struct *mm, unsigned long addr)
> return vma;
>
> rb_node = mm->mm_rb.rb_node;
> - vma = NULL;
>
> while (rb_node) {
> struct vm_area_struct *tmp;
> --
> 1.9.3
>
>
next prev parent reply other threads:[~2015-09-07 12:39 UTC|newest]
Thread overview: 17+ messages / expand[flat|nested] mbox.gz Atom feed top
2015-09-05 14:03 [PATCH] mm/mmap.c: Remove useless statement "vma = NULL" in find_vma() Chen Gang
2015-09-07 12:36 ` Oleg Nesterov [this message]
2015-09-07 12:36 ` Oleg Nesterov
[not found] ` <55EEED66.6090509@hotmail.com>
2015-09-08 14:14 ` Chen Gang
2015-09-08 14:14 ` Chen Gang
2015-09-09 16:26 ` Oleg Nesterov
2015-09-09 16:26 ` Oleg Nesterov
[not found] ` <55F0B6C2.2000706@hotmail.com>
2015-09-09 22:44 ` Chen Gang
2015-09-09 22:44 ` Chen Gang
2015-09-10 18:19 ` Oleg Nesterov
2015-09-10 18:19 ` Oleg Nesterov
2015-09-10 22:20 ` Chen Gang
2015-09-10 22:20 ` Chen Gang
2015-09-08 23:14 ` David Rientjes
2015-09-08 23:14 ` David Rientjes
-- strict thread matches above, loose matches on Subject: below --
2015-09-03 3:52 gang.chen.5i5j
2015-09-03 4:02 ` Chen Gang
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