linux-kernel - Re: [RFC 5/7] LTTng instrumentation mm

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Message-Id: <1195501438.27759.130.camel@localhost>
Date:	Mon, 19 Nov 2007 11:43:58 -0800
From:	Dave Hansen <haveblue@...ibm.com>
To:	Mathieu Desnoyers <compudj@...stal.dyndns.org>
Cc:	akpm@...ux-foundation.org, linux-kernel@...r.kernel.org,
	linux-mm@...ck.org, mbligh@...gle.com
Subject: Re: [RFC 5/7] LTTng instrumentation mm

On Mon, 2007-11-19 at 14:00 -0500, Mathieu Desnoyers wrote:
> > Well, using page_to_pfn turns out to be ugly in markers (and in
> > printks) then. Depending on the architecture, it will result in either
> > an unsigned long (x86_64) or an unsigned int (i386), which corresponds
> 
> Well, it's signed long and signed int, but the point is still valid. 

the result of page_to_pfn() may end up being signed in practice, but it
never needs to be.  Just cast it to an unsigned long and make it
consistent everywhere.  

-- Dave

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