From: Andrew Morton <akpm@osdl.org>
To: Andries Brouwer <aebr@win.tue.nl>
Cc: greg@kroah.com, linux-kernel@vger.kernel.org
Subject: Re: [PATCH] print_dev_t for 2.6.0-test1-mm
Date: Wed, 16 Jul 2003 15:21:43 -0700 [thread overview]
Message-ID: <20030716152143.6ab7d7d3.akpm@osdl.org> (raw)
In-Reply-To: <20030716222015.GB1964@win.tue.nl>
Andries Brouwer <aebr@win.tue.nl> wrote:
>
>
> > Why do we need the 16:16 option?
>
> It is not very important, but major 0 is reserved, so if userspace
> (or a filesystem) hands us a 32-bit device number, we have to
> split that in some way, not 0+32. Life is easiest with 16+16.
> (Now the major is nonzero, otherwise we had 8+8.)
> Other choices lead to slightly more complicated code.
>
Why would anyone hand the kernel a 32-bit device number? They're either 16
or 64, are they not?
next prev parent reply other threads:[~2003-07-16 22:17 UTC|newest]
Thread overview: 41+ messages / expand[flat|nested] mbox.gz Atom feed top
2003-07-16 18:46 [PATCH] print_dev_t for 2.6.0-test1-mm Greg KH
2003-07-16 20:09 ` Andrew Morton
2003-07-16 21:02 ` Greg KH
2003-07-16 21:13 ` Andrew Morton
2003-07-16 21:34 ` Andries Brouwer
2003-07-16 21:39 ` Andrew Morton
2003-07-16 22:10 ` H. Peter Anvin
2003-07-16 22:20 ` Andries Brouwer
2003-07-16 22:21 ` Andrew Morton [this message]
2003-07-16 23:44 ` Andries Brouwer
2003-07-16 23:49 ` Andrew Morton
2003-07-17 8:27 ` Joel Becker
2003-07-17 8:47 ` Roman Zippel
2003-07-17 9:15 ` Joel Becker
2003-07-17 9:24 ` Andrew Morton
2003-07-17 10:10 ` Trond Myklebust
2003-07-17 11:46 ` Andries Brouwer
2003-07-17 11:52 ` Alan Cox
2003-07-17 10:26 ` Andries Brouwer
2003-07-17 10:46 ` Miquel van Smoorenburg
2003-07-17 11:19 ` Andries Brouwer
2003-07-17 11:46 ` Miquel van Smoorenburg
2003-07-17 21:55 ` Andrew Morton
2003-07-17 22:24 ` Andries Brouwer
2003-07-17 22:43 ` Joel Becker
2003-07-17 23:11 ` Andries Brouwer
2003-07-17 23:49 ` Miquel van Smoorenburg
2003-07-18 0:04 ` Andries Brouwer
2003-07-18 0:04 ` Joel Becker
2003-07-18 1:05 ` Andries Brouwer
2003-07-18 8:06 ` Joel Becker
2003-07-17 3:00 ` H. Peter Anvin
[not found] ` <200307170300.UAA24096@cesium.transmeta.com>
2003-07-17 10:43 ` Andries Brouwer
2003-07-20 14:33 ` H. Peter Anvin
2003-07-16 21:36 ` Greg KH
2003-07-16 22:00 ` Andrew Morton
2003-07-16 22:11 ` what's left for 64 bit dev_t Greg KH
2003-07-16 22:19 ` Andrew Morton
2003-07-16 22:48 ` Greg KH
2003-07-17 3:02 ` H. Peter Anvin
2003-07-17 13:59 ` Andries Brouwer
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