2011/3/4 Ryusuke Konishi <ryusuke@xxxxxxxx>: > In the new directory semantics, we needs to decide if a given > directory argument belongs to a mount point in the mtab entries. > > This matching check needs to know whether the given directory crosses > over a filesystem boundary starting from each mount point. And, this > needs testing if each intermediate directory is a mount point or not. > > "mountpoint" command judges this by comparing device ids and inode > numbers for each directory with its parent. BTW, we can test if a given nilfs2 directory is a mount point or not with its inode number. The nilfs2 mount point always has inode number 2 (=NILFS_ROOT_INO) and no other directories have this inode number. Thanks, Ryusuke Konishi -- To unsubscribe from this list: send the line "unsubscribe linux-nilfs" in the body of a message to majordomo@xxxxxxxxxxxxxxx More majordomo info at http://vger.kernel.org/majordomo-info.html
