BTW, another (general) reason over-mounts are sometimes used is to deliberately obscure what's underneath. It's worth noting that anything with a file already open on the underlying filesystem still has access to that file after something else is mounted over top, and that fact is sometimes used to control access to certain files/filesystems, by starting whatever it is that needs to access them and letting them open the files they need, then over-mounting a different filesystem, often empty, so no other applications can access the under-mounted files.
Thanks. Makes sense theoretically. Any eg of real practical application ? Any product in the market using it that way ?
looks btrfs-progs shouldn't depend on the mnt-point driven ioctls to manage the FS. Now that's a set of challenges. Thanks, Anand -- To unsubscribe from this list: send the line "unsubscribe linux-btrfs" in the body of a message to majordomo@xxxxxxxxxxxxxxx More majordomo info at http://vger.kernel.org/majordomo-info.html
