add_random (RW)
----------------
-This file allows to trun off the disk entropy contribution. Default
+This file allows to turn off the disk entropy contribution. Default
value of this file is '1'(on).
discard_granularity (RO)
minimum_io_size (RO)
--------------------
-This is the smallest preferred io size reported by the device.
+This is the smallest preferred IO size reported by the device.
nomerges (RW)
-------------
optimal_io_size (RO)
--------------------
-This is the optimal io size reported by the device.
+This is the optimal IO size reported by the device.
physical_block_size (RO)
------------------------