Re: [PATCH] vfat+affs case preservation

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
#