Do wakeup on next seg as well as generic cleaner wakeup in case
multiple cleaners are running.

merge vfs_lock and vfs_busy; interlock mount points properly

change mountlist to CIRCLEQ so we can do unmountall (from mycroft)

update from margo

MOUNT_LFS becomes lfs_mount_type

daddr_t => ufs_daddr_t

new queue structure

changes for 4.4BSD-Lite requested by USL

changes for 4.4BSD-Lite requested by USL

4.4BSD snapshot (revision 8.1); add 1993 to copyright

Make WRITE/WAIT thresholds higher. Add stat counting.

If out of buffers, sleep rather than return ENOSPC

Do not invalidate buffers that you return ENOSPC on (they may need
to be written later).

Wakeup the cleaner when we run out of disk space.

Fix threshholds for kicking off a write. Make lfs_bwrite to inode
accounting and available disk block accounting. Add global to determine if
a writer has already been kicked off to free up some b

Fix threshholds for kicking off a write. Make lfs_bwrite to inode
accounting and available disk block accounting. Add global to determine if
a writer has already been kicked off to free up some buffers. Add lfs_check
routine which determines if there is memory space available.

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delete VERBOSE #ifdef's

expand vop args

delete PMAP_BUG_FIX_HACK for now, until see the bug again

registerized vnodeop ops after vnode interface conversion

vnodeop argument macro expansion

vnode interface conversion

remove the rest of the typedef's

don't reassign multiple times; quick hack, don't reassign ifile at all

block at bio when reassigning buffer; handle queue count more cleanly

minor fix, don't set queue count to 0 unless did something