From: Cong Wang <xiyou.wangcong@gmail.com>
To: Li Zhong <zhong@linux.vnet.ibm.com>
Cc: linux-kernel@vger.kernel.org, linux-mm@kvack.org,
akpm@linux-foundation.org
Subject: Re: [PATCH mm] limit the mm->map_count not greater than sysctl_max_map_count
Date: Wed, 18 Apr 2012 21:28:01 +0800 [thread overview]
Message-ID: <4F8EC161.5050307@gmail.com> (raw)
In-Reply-To: <1334741239.30072.7.camel@ThinkPad-T420>
On 04/18/2012 05:27 PM, Li Zhong wrote:
> When reading the mmap codes, I found the checking of mm->map_count
> against sysctl_max_map_count is not consistent. At some places, ">" is
> used; at some other places, ">=" is used.
>
> This patch changes ">" to">=", so they are consistent, and makes sure
> the value is not greater (one more) than sysctl_max_map_count.
>
Well, according to Documentation/sysctl/vm.txt,
max_map_count:
This file contains the maximum number of memory map areas a process
may have. [...]
I think ->map_count == sysctl_max_map_count should be allowed, so using
'>' is correct.
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WARNING: multiple messages have this Message-ID (diff)
From: Cong Wang <xiyou.wangcong@gmail.com>
To: Li Zhong <zhong@linux.vnet.ibm.com>
Cc: linux-kernel@vger.kernel.org, linux-mm@kvack.org,
akpm@linux-foundation.org
Subject: Re: [PATCH mm] limit the mm->map_count not greater than sysctl_max_map_count
Date: Wed, 18 Apr 2012 21:28:01 +0800 [thread overview]
Message-ID: <4F8EC161.5050307@gmail.com> (raw)
In-Reply-To: <1334741239.30072.7.camel@ThinkPad-T420>
On 04/18/2012 05:27 PM, Li Zhong wrote:
> When reading the mmap codes, I found the checking of mm->map_count
> against sysctl_max_map_count is not consistent. At some places, ">" is
> used; at some other places, ">=" is used.
>
> This patch changes ">" to">=", so they are consistent, and makes sure
> the value is not greater (one more) than sysctl_max_map_count.
>
Well, according to Documentation/sysctl/vm.txt,
max_map_count:
This file contains the maximum number of memory map areas a process
may have. [...]
I think ->map_count == sysctl_max_map_count should be allowed, so using
'>' is correct.
next prev parent reply other threads:[~2012-04-18 13:28 UTC|newest]
Thread overview: 6+ messages / expand[flat|nested] mbox.gz Atom feed top
2012-04-18 9:27 [PATCH mm] limit the mm->map_count not greater than sysctl_max_map_count Li Zhong
2012-04-18 9:27 ` Li Zhong
2012-04-18 13:28 ` Cong Wang [this message]
2012-04-18 13:28 ` Cong Wang
2012-04-19 1:40 ` Li Zhong
2012-04-19 1:40 ` Li Zhong
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