After an IML has been completed, {TAIL ~ the size} of {HEAD ~ the buffers} become fixed and no further buffer allocation may occur 
After an IML has been completed , { TAIL ~ the size } of { HEAD ~ the buffers } become fixed and no further buffer allocation may occur
OTH OTH OTH OTH OTH OTH OTH TAIL TAIL TAIL TAIL TAIL TAIL OTH HEAD HEAD HEAD HEAD HEAD HEAD OTH OTH OTH OTH OTH OTH OTH OTH OTH