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From: Paul Mackerras <paulus@samba.org>
To: Andrew Morton <akpm@osdl.org>
Cc: Adrian Bunk <bunk@stusta.de>, Matt Reuther <mreuther@umich.edu>,
	LKML <linux-kernel@vger.kernel.org>, Jay Lan <jlan@sgi.com>
Subject: Re: [-mm patch] add timespec_to_us() and use it in kernel/tsacct.c
Date: Tue, 8 Aug 2006 10:02:28 +1000	[thread overview]
Message-ID: <17623.54420.461017.882242@cargo.ozlabs.ibm.com> (raw)
In-Reply-To: <20060807132418.037048a5.akpm@osdl.org>

Andrew Morton writes:
> On Mon, 7 Aug 2006 15:32:41 +0200
> Adrian Bunk <bunk@stusta.de> wrote:
> > This doesn't look correct since do_div() does not guarantee to return 
> > more than 32bit.
> 
> eh?  We use do_div() to do 64bit/something all the time??

Indeed.  If do_div didn't return a 64-bit quotient then
printk("%lld", ...) wouldn't work.  (The remainder is 32-bit of course,
because the divisor is 32-bit.)

Paul.


  parent reply	other threads:[~2006-08-08  0:02 UTC|newest]

Thread overview: 8+ messages / expand[flat|nested]  mbox.gz  Atom feed  top
2006-08-07  3:30 2.6.18-rc3-mm2 Compile Error Matt Reuther
2006-08-07  5:21 ` Andrew Morton
2006-08-07 11:31   ` Matt Reuther
2006-08-07 13:32   ` [-mm patch] add timespec_to_us() and use it in kernel/tsacct.c Adrian Bunk
2006-08-07 20:24     ` Andrew Morton
2006-08-07 20:46       ` Adrian Bunk
2006-08-08  0:02       ` Paul Mackerras [this message]
2006-08-09 11:57     ` Matt Reuther

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