linux-kernel - Re: No more bits in vm_area_struct's vm

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Message-Id: <20091002113946.172dc982.kamezawa.hiroyu@jp.fujitsu.com>
Date:	Fri, 2 Oct 2009 11:39:46 +0900
From:	KAMEZAWA Hiroyuki <kamezawa.hiroyu@...fujitsu.com>
To:	KAMEZAWA Hiroyuki <kamezawa.hiroyu@...fujitsu.com>
Cc:	Hugh Dickins <hugh.dickins@...cali.co.uk>,
	Wu Fengguang <fengguang.wu@...el.com>,
	Nigel Cunningham <ncunningham@...a.org.au>,
	LKML <linux-kernel@...r.kernel.org>,
	"linux-mm@...ck.org" <linux-mm@...ck.org>
Subject: Re: No more bits in vm_area_struct's vm_flags.

On Fri, 2 Oct 2009 10:37:55 +0900
KAMEZAWA Hiroyuki <kamezawa.hiroyu@...fujitsu.com> wrote:
> This one
> ==
> #define FLAG    (0x20)
> 
> int foo(unsigned long long x)
> {
>         if (x & ~FLAG)
>                 return 1;
>         return 0;
> }
> 
Then, !!(x & ~FLAG) is necessary...i see (>_<
Maybe no problem..

Thanks,
-Kame

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