linux-kernel - Re: [PATCH] reiserfs: fix handling of device names with /'s in them

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Message-ID: <44BBD4B6.5020801@namesys.com>
Date:	Mon, 17 Jul 2006 11:19:34 -0700
From:	Hans Reiser <reiser@...esys.com>
To:	Jeff Mahoney <jeffm@...e.com>
CC:	7eggert@....de, Eric Dumazet <dada1@...mosbay.com>,
	ReiserFS List <reiserfs-list@...esys.com>,
	Linux Kernel Mailing List <linux-kernel@...r.kernel.org>,
	Andrew Morton <akpm@...l.org>
Subject: Re: [PATCH] reiserfs: fix handling of device names with /'s in them

Jeff Mahoney wrote:

> Hans Reiser wrote:
>
> >I don't understand your patch and cannot support it as it is written.  
> >Perhaps you can call me and explain it on the phone.
>
>
> I seriously can't tell if you're deliberately trying to be difficult or
> not. It's a simple "replace / with ! before sending the name to procfs."
>
> Reiserfs requests that a procfs directory called
> /proc/fs/reiserfs/<blockdev> be created. Some block devices contain
> slashes, so with cciss/c123 it attempts to create a directory called
> /proc/fs/reiserfs/cciss/c123, but cciss/ doesn't exist, shouldn't, and
> never will.

Why not check to see if it does not exist, and create it if not,  as
needed,  and skip the !'s....?

> In order to create a single path component, "cciss/c123"
> becomes "cciss!c123." This is consistent with how sysfs does it now. For
> a real example, change the "-" in device mapper block names to "/" and
> see what happens.
>
> Regardless, it's already been checked into mainline as change
> 6fbe82a952790c634ea6035c223a01a81377daf1.
>
> -Jeff
>
> --
> Jeff Mahoney
> SUSE Labs

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