linux-kernel - Re: [PATCH] percpu: cast away printk format warning

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Message-ID: <AANLkTintEJ5mwmME6sUSXBpL7aGTT+G=psmSvjKqCYjS@mail.gmail.com>
Date:	Tue, 22 Mar 2011 18:19:32 -0400
From:	Mike Frysinger <vapier@...too.org>
To:	Christoph Lameter <cl@...ux.com>
Cc:	Tejun Heo <tj@...nel.org>, linux-kernel@...r.kernel.org
Subject: Re: [PATCH] percpu: cast away printk format warning

On Tue, Mar 22, 2011 at 17:17, Mike Frysinger wrote:
> On Tue, Mar 22, 2011 at 17:03, Christoph Lameter <wrote:
>> On Tue, 22 Mar 2011, Mike Frysinger wrote:
>>> So add an explicit cast to unsigned long here.
>>
>> I believe we have a format character %t to avoid the cast.
>
> thanks, i wasnt aware of the ptrdiff_t extension.  i'll send out an update.

actually, that doesnt work.  ptrdiff_t  is a type unto itself.  in
order for this to work, every arch would need to cast/type
VMALLOC_{START,END} to a pointer type so that they could then be
subtracted.  or, add a ptrdiff_t cast to this file ;).
-mike
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