linux-kernel - Re: [patch] do_no

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Date:	Wed, 20 Sep 2006 18:47:53 +0200
From:	Jes Sorensen <jes@....com>
To:	"Randy.Dunlap" <rdunlap@...otime.net>
Cc:	Linus Torvalds <torvalds@...l.org>,
	Linux Kernel Mailing List <linux-kernel@...r.kernel.org>,
	bjorn_helgaas@...com, Nick Piggin <nickpiggin@...oo.com.au>,
	Andrew Morton <akpm@...l.org>, Robin Holt <holt@....com>,
	Dean Nelson <dcn@....com>, Hugh Dickins <hugh@...itas.com>
Subject: Re: [patch] do_no_pfn()

Randy.Dunlap wrote:
> On 20 Sep 2006 03:25:25 -0400 Jes Sorensen wrote:
>> +#define NOPFN_SIGBUS	((unsigned long) -1)
>> +#define NOPFN_OOM	((unsigned long) -2)
> 
> Is there any difference in the above and
> 
> #define NOPFN_SIGBUS		-1UL
> #define NOPFN_OOM		-2UL

I don't think there is, but I was trying to keep it consistent with the
NOPAGE_foo versions - the way it's done is more explicit so less likely
anyone will get confused over it.

I can change it if it's a sticking point, but I'd claim thats more noise
than it's worth.

Thanks,
Jes

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