From: Christoph Hellwig <hch@infradead.org>
To: Matthew Wilcox <willy@debian.org>
Cc: Bernardo Innocenti <bernie@develer.com>,
Andrew Morton <akpm@zip.com.au>,
linux-kernel@vger.kernel.org
Subject: Re: do_div vs sector_t
Date: Sat, 12 Jul 2003 07:52:02 +0100 [thread overview]
Message-ID: <20030712075202.A1327@infradead.org> (raw)
In-Reply-To: <20030711223359.GP20424@parcelfarce.linux.theplanet.co.uk>; from willy@debian.org on Fri, Jul 11, 2003 at 11:33:59PM +0100
On Fri, Jul 11, 2003 at 11:33:59PM +0100, Matthew Wilcox wrote:
> aic->seek_mean = aic->seek_total + 128;
> do_div(aic->seek_mean, aic->seek_samples);
> }
>
> seek_mean is a sector_t so sometimes it's 64-bit on a 32-bit platform.
> so we can't avoid calling do_div().
That's why we have sector_div, never use do_div on a sector_t.
next prev parent reply other threads:[~2003-07-12 6:37 UTC|newest]
Thread overview: 12+ messages / expand[flat|nested] mbox.gz Atom feed top
2003-07-11 22:33 do_div vs sector_t Matthew Wilcox
2003-07-11 22:34 ` Andrew Morton
2003-07-11 22:42 ` Neil Brown
2003-07-12 0:14 ` do_div vs sector_t (patch) Nick Piggin
2003-07-12 6:52 ` Christoph Hellwig [this message]
2003-07-12 6:58 ` do_div vs sector_t Andrew Morton
2003-07-13 17:26 ` Richard Henderson
2003-07-13 17:39 ` Russell King
2003-07-13 19:14 ` Bernardo Innocenti
2003-07-13 20:04 ` Matthew Wilcox
2003-07-14 4:07 ` Peter Chubb
-- strict thread matches above, loose matches on Subject: below --
2003-07-13 18:40 linux
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