linux-kernel - Re: [PATCH][v4] Modify loop device to be able to manage partitions of the disk image

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Message-Id: <20080319142821.73d280f3.akpm@linux-foundation.org>
Date:	Wed, 19 Mar 2008 14:28:21 -0700
From:	Andrew Morton <akpm@...ux-foundation.org>
To:	Laurent Vivier <Laurent.Vivier@...l.net>
Cc:	randy.dunlap@...cle.com, jens.axboe@...cle.com,
	linux-kernel@...r.kernel.org
Subject: Re: [PATCH][v4]  Modify loop device to be able to manage partitions
 of the disk image

On Wed, 19 Mar 2008 21:24:41 +0100
Laurent Vivier <Laurent.Vivier@...l.net> wrote:

> Le mercredi 19 mars 2008 __ 13:11 -0700, Randy Dunlap a __crit :
> > On Wed, 19 Mar 2008 13:36:07 +0100 Laurent Vivier wrote:
> > 
> > > This patch allows to use loop device with partitionned disk image.
> > > 
> > > Original behavior of loop is not modified.
> > > 
> > > A new parameter is introduced to define how many partition we want to be
> > > able to manage per loop device. This parameter is "max_part".
> > 
> > What happened to the update to Documentation/kernel-parameters.txt
> > that was in v3?
> 
> Well, perhaps I didn't understand the comment of Andrew:
> 
> "This shouldn't be needed."
> 
> I though it means I should remove it. So, Andrew ???

No, given that all module_param() options are available via the boot
command line when the module is linked into vmlinux, we don't document them
separately.

There should be a way of auto-generating all the documentation for all the
module parameters from their MODULE_PARM_DESC's.  And there probably is,
but I'm not sure how this is done (?)

(does `make help', fails to spot it).

You can do `modinfo loop' but that probably doesn't work if
CONFIG_BLK_DEV_LOOP=y?



I assume you tested the "loop.max_part=N" option?

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