lint

get rid of lingering swap_pager_finish reference

lint

massive changes to use multi-page interface, cleanup.

convert to use new queue structures

in io, check right off if page exists in object
makes shadow-chain traversal faster

finish up new device pager: all pagers get offsets

changes for 4.4BSD-Lite requested by USL

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

from pseudo-device to option

only force wakeup of pageout daemon if we are short on memory

do not need to include <vm/queue.h> as it comes in from <vm/vm.h>

av_forw/av_back are gone; now use b_actf/b_actb for linking active buffers

convert vm_page bit fields to flags

return VM_PAGER_ERROR not VM_PAGER_FAIL on IO errors

new include location for specdev.h

return more likely values, not just random junk

delete USES

vnode interface conversion

vnode.h/specdev.h swapped to avoid prototype warnings

add function prototypes; new include format; define pagerops here; lint

set dirty offset (from Macklem)

replace numerous includes with vm.h

move a lot of synchronizing code over to DEBUG since we now
keep the page frame busy while it is being processed by the pager

fix includes; new proc struct; rm *_NULL