From: "H. Peter Anvin" <hpa@zytor.com>
To: David Teigland <teigland@redhat.com>
Cc: Alan Cox <alan@lxorguk.ukuu.org.uk>,
Andrew Morton <akpm@linux-foundation.org>,
Thadeu Lima de Souza Cascardo <cascardo@holoscopio.com>,
linux-kernel@vger.kernel.org, rubini@gnudd.com, gregkh@suse.de
Subject: Re: [PATCH 3/3] misc: use a proper range for minor number dynamic allocation
Date: Wed, 16 Dec 2009 09:10:34 -0800 [thread overview]
Message-ID: <4B29148A.70805@zytor.com> (raw)
In-Reply-To: <20091216180155.GA23117@redhat.com>
On 12/16/2009 10:01 AM, David Teigland wrote:
>
> I explained here http://lkml.org/lkml/2009/11/9/379 that the dlm does not
> use as many misc devices as has been implied. It starts with 3, and adds
> one for each *userspace* lockspace. There are very few applications (I
> know of 3) that create userspace lockspaces, and they each create about
> one each.
>
> That said, I still intend to rework the dlm to use a single device for all
> lockspaces.
>
Still seems to make more sense to simply move it to a major and/or a
dynamic allocation. misc devices were always meant to be *one of a
kind* devices, which simply didn't need anything but a single allocation.
-hpa
--
H. Peter Anvin, Intel Open Source Technology Center
I work for Intel. I don't speak on their behalf.
next prev parent reply other threads:[~2009-12-16 17:12 UTC|newest]
Thread overview: 19+ messages / expand[flat|nested] mbox.gz Atom feed top
2009-11-10 0:30 [PATCH 1/3] misc: clear allocation bit in minor bitmap when device register fails Thadeu Lima de Souza Cascardo
2009-11-10 0:30 ` [PATCH 2/3] misc: use bitmap/bitops functions for dynamic minor number allocation Thadeu Lima de Souza Cascardo
2009-11-10 0:30 ` [PATCH 3/3] misc: use a proper range for minor number dynamic allocation Thadeu Lima de Souza Cascardo
2009-11-10 0:34 ` H. Peter Anvin
2009-11-10 10:19 ` Alan Cox
2009-11-10 16:45 ` Thadeu Lima de Souza Cascardo
2009-11-11 23:36 ` Andrew Morton
2009-12-15 22:34 ` Andrew Morton
2009-12-15 22:42 ` H. Peter Anvin
2009-12-15 22:56 ` Greg KH
2009-12-15 23:56 ` Alan Cox
2009-12-16 23:14 ` cascardo
2009-12-16 22:51 ` cascardo
2009-12-15 23:37 ` Alan Cox
2009-12-15 23:41 ` Andrew Morton
2009-12-16 18:01 ` David Teigland
2009-12-16 17:10 ` H. Peter Anvin [this message]
2009-12-16 23:21 ` cascardo
2009-12-16 23:05 ` cascardo
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