Now it returns the length of the full path or error code.
Signed-off-by: NKonstantin Khlebnikov <khlebnikov@yandex-team.ru>
Fixes: 3abb1d90 ("kernfs: make kernfs_path*() behave in the style of strlcpy()")
Acked-by: NTejun Heo <tj@kernel.org>
Signed-off-by: NGreg Kroah-Hartman <gregkh@linuxfoundation.org>