From owner-freebsd-hackers  Tue Sep  3 00:03:07 1996
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Date: Tue, 3 Sep 96 15:56:33 KST
From: cskim@cslsun10.sogang.ac.kr (Kim Chang Seob)
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I major in computer science at SoGang Univ. in Seoul. Korea. 
my question is that 
what is ? 
phys_avail(i + 1) ? 
nblocks? 
it is in vm_page_startup() of vm_page.c