Re: [PATCH 1/7] fuse: check directory aliasing in mkdir

[Miklos Szeredi]

> > Check the created directory inode for aliases in the mkdir() method.
> 
> 
> Can't you use d_add_unique() here?

The patch is checking for hashed aliases of an inode.  E.g. if /foo is
a directory and has a ID of 28, and mkdir /bar returns the same ID,
then the mkdir should fail.

It's an illegal for the filesystem to create two directories refering
to the same inode.

OTOH d_add_unique() is looking for unhashed aliases to resurrect,
which may or may not make sense in fuse.  I'll think about it a bit
more.

Thanks,
Miklos
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