From: Miklos Szeredi <mszeredi@suse.cz>
Date: Tue, 1 Oct 2013 14:44:54 +0000 (+0200)
Subject: vfs: introduce d_instantiate_no_diralias()
X-Git-Tag: v3.13-rc1~107^2~66
X-Git-Url: http://git.openpandora.org/cgi-bin/gitweb.cgi?a=commitdiff_plain;h=b70a80e7a133a0c86f2fa078e7c144597c516415;p=pandora-kernel.git

vfs: introduce d_instantiate_no_diralias()

...which just returns -EBUSY if a directory alias would be created.

This is to be used by fuse mkdir to make sure that a buggy or malicious
userspace filesystem doesn't do anything nasty.  Previously fuse used a
private mutex for this purpose, which can now go away.

Signed-off-by: Miklos Szeredi <mszeredi@suse.cz>
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