new copyright notice

"update from Rick Macklem"

VOP_ABORTOP is no longer responsible for unlocking and vreleing vnodes

"update from Rick Macklem adding TCP support to NFS"

mount structure prefixes go from m_ to mnt_ and M_ to MNT_

buffer invalidation is now handled by vclean

readdir fixes from Rick Macklem

get rid of unneeded header files

have to use generic routines as we may be crossing a mount point

lint; do nfs_lock explicitly; add nfs_islocked

debugging, track the holder and waiter for an nfsnode lock

v_blockh is split into clean and dirty lists

v_count => v_usecount

"December update from Rick Macklem"

use vprint in place of printf

lock/unlock use vnodes not nfsnodes

suppress printing of pushes of active vnodes

flush first, then remove from hashlist

nfs_nflush is replaced by the more general vflush

lint

nfs_ngrab is replaced by vget; flushing vnodes handled by vgone

must not clear NBUFFERED flag when inactive

merge inode and nfsnode tables into a single vnode table;
link together all vnodes associated with a particular mount point

"bug fixes and cleanups from Rick Macklem"

"update from Rick Macklem"