This series converts a bunch of unidiomatic uses of d_add()
in ->lookup() instances to equivalent uses of d_splice_alias(),
which is the normal mechanism for ->lookup().

Signed-off-by: Al Viro <viro@zeniv.linux.org.uk>

gfs2: use d_splice_alias() for ->lookup() return value

Reviewed-by: Andreas Gruenbacher <agruenba@redhat.com>
Signed-off-by: Al Viro <viro@zeniv.linux.org.uk>