tree 378dbeeafc1510fb326eda10e1f48085be098f6c
parent 94e92a6e772e009e27083a7f42d49a179e5f668c
author Miklos Szeredi <mszeredi@suse.cz> 1380638694 +0200
committer Al Viro <viro@zeniv.linux.org.uk> 1382672497 -0400

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>