Date: Wed, 2 Jul 2003 13:04:27 +0100
From: viro@parcelfarce.linux.theplanet.co.uk
To: Jan Kratochvil 
	<rcpt-viro.AT.parcelfarce.linux.theplanet.co.uk@jankratochvil.net>
Cc: linux-fsdevel@vger.kernel.org, linux-kernel@vger.kernel.org,
       chaffee@cs.berkeley.edu, zippel@linux-m68k.org
Subject: Re: [PATCH] vfat+affs case preservation
Message-ID: <20030702120426.GU27348@parcelfarce.linux.theplanet.co.uk>
References: <20030702102538.GA16711@exuhome.dyn.jankratochvil.net> <20030702103457.GS27348@parcelfarce.linux.theplanet.co.uk> <20030702105328.GA17023@exuhome.dyn.jankratochvil.net>
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On Wed, Jul 02, 2003 at 12:53:28PM +0200, Jan Kratochvil wrote:
> > Broken.   With that we can get two active dentries for the same directory.
> > There goes any cache coherency, with all usual results.
> 
> Right, this patch will introduce virtual directory hardlinks - multiple dentries
> to one directory inode. But it also makes dentry validation mandatory for such
> filesystems to fix it.

Obvious example of bad behaviour:

# mkdir A
# ls A
# mount -t iso9600 /dev/cdrom A
# touch a/b
# ls a/b
a/b
# ls A/b
ls: A/b: No such file or directory
# umount A
# ls A/b
A/b
#
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