ovl: relax same fs constrain for ovl_check_origin()

For the case of all layers not on the same fs, try to decode the copy up
origin file handle on any of the lower layers.

Signed-off-by: Amir Goldstein <amir73il@gmail.com>
Signed-off-by: Miklos Szeredi <mszeredi@redhat.com>
1 file changed