linux-kernel - Re: [PATCH] scsi/sd: Fix size output in MB

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Message-ID: <20080831001314.694df795@mjolnir.drzeus.cx>
Date:	Sun, 31 Aug 2008 00:13:14 +0200
From:	Pierre Ossman <drzeus-list@...eus.cx>
To:	James Bottomley <James.Bottomley@...senPartnership.com>
Cc:	Matthew Wilcox <matthew@....cx>, Simon Arlott <simon@...e.lp0.eu>,
	Linux Kernel Mailing List <linux-kernel@...r.kernel.org>,
	linux-scsi <linux-scsi@...r.kernel.org>
Subject: Re: [PATCH] scsi/sd: Fix size output in MB

On Sat, 30 Aug 2008 16:45:49 -0500
James Bottomley <James.Bottomley@...senPartnership.com> wrote:

> On Sat, 2008-08-30 at 22:59 +0200, Pierre Ossman wrote:
> > On Sat, 30 Aug 2008 11:45:16 -0600
> > Matthew Wilcox <matthew@....cx> wrote:
> > 
> > > 
> > > 2. We should report in GB or TB when appropriate.  The exact definition
> > > of 'appropriate' is going to vary from person to person.  Might I
> > > suggest that we should report between two and four significant digits.
> > > eg 9543 MB is ok, 10543 MB should be 10 GB.
> > > 
> > 
> > I've been looking at doing something like this for the mmc_block
> > driver, so a generic helper is welcome. :)
> 
> Does MMC have the 10^3 requirement like SCSI/ATA disks do, or can you
> use 2^10 like standard computer stuff for capacities?
> 

Some do, some don't. I prefer the 2^10 and MiB variants as it avoids
ambiguity.

Rgds
-- 
     -- Pierre Ossman

  Linux kernel, MMC maintainer        http://www.kernel.org
  rdesktop, core developer          http://www.rdesktop.org

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