correct comments

Author: limetech

sbin/mover

@@ -13,7 +13,8 @@
 # Files at the top level of a pool or an array disk are never moved.
 
 # The 'find' command generates a list of all files and directories of a share.
-# For each file, if the file is not "in use" by any process (as detected by 'in_use' command),
+# For each file, if the file is not "in use" by any process (as detected by 'fuser' command)
+# and not attached to any loop device (as detected by 'losetup' command),
 # then the file is moved, and upon success, deleted from the source disk.  If the file already
 # exists on the target, it is not moved and the source is not deleted.  All meta-data of moved
 # files/directories is preserved: permissions, ownership, extended attributes, and access/modified