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From: jnc@mercury.lcs.mit.edu (Noel Chiappa)
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Subject: [TUHS] 'Huge' file support removed from PWB1
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In PWB1, support for 'huge' files appears to have been removed. If one
compares bmap() in PWB1'S subr.c with V6's, the "'huge' fetch of double
indirect block" code is gone. I guess PWB didn't need very large (> 8*256*512
= 1,048,576 bytes) files? I'm not sure what the _benefits_ of removing it
were, though - unless PWB was generating lots of files of between 7*256*512
and 8*256*512 bytes in length, and they wanted to avoid the overhead of the
double-indirect block? (The savings in code space are derisory - unlike in
LSX/MINI-UNIX.) Anyone know?

		Noel