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

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Message-ID: <44BBA4CF.8020901@suse.com>
Date:	Mon, 17 Jul 2006 10:55:11 -0400
From:	Jeff Mahoney <jeffm@...e.com>
To:	Hans Reiser <reiser@...esys.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

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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. 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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