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Date: Wed, 18 Apr 2012 21:28:01 +0800
From: Cong Wang <xiyou.wangcong@gmail.com>
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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
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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.