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David Greenman 0d94caffca These changes embody the support of the fully coherent merged VM buffer cache, 
much higher filesystem I/O performance, and much better paging performance. It
represents the culmination of over 6 months of R&D.

The majority of the merged VM/cache work is by John Dyson.

The following highlights the most significant changes. Additionally, there are
(mostly minor) changes to the various filesystem modules (nfs, msdosfs, etc) to
support the new VM/buffer scheme.

vfs_bio.c:
Significant rewrite of most of vfs_bio to support the merged VM buffer cache
scheme.  The scheme is almost fully compatible with the old filesystem
interface.  Significant improvement in the number of opportunities for write
clustering.

vfs_cluster.c, vfs_subr.c
Upgrade and performance enhancements in vfs layer code to support merged
VM/buffer cache.  Fixup of vfs_cluster to eliminate the bogus pagemove stuff.

vm_object.c:
Yet more improvements in the collapse code.  Elimination of some windows that
can cause list corruption.

vm_pageout.c:
Fixed it, it really works better now.  Somehow in 2.0, some "enhancements"
broke the code.  This code has been reworked from the ground-up.

vm_fault.c, vm_page.c, pmap.c, vm_object.c
Support for small-block filesystems with merged VM/buffer cache scheme.

pmap.c vm_map.c
Dynamic kernel VM size, now we dont have to pre-allocate excessive numbers of
kernel PTs.

vm_glue.c
Much simpler and more effective swapping code.  No more gratuitous swapping.

proc.h
Fixed the problem that the p_lock flag was not being cleared on a fork.

swap_pager.c, vnode_pager.c
Removal of old vfs_bio cruft to support the past pseudo-coherency.  Now the
code doesn't need it anymore.

machdep.c
Changes to better support the parameter values for the merged VM/buffer cache
scheme.

machdep.c, kern_exec.c, vm_glue.c
Implemented a seperate submap for temporary exec string space and another one
to contain process upages. This eliminates all map fragmentation problems
that previously existed.

ffs_inode.c, ufs_inode.c, ufs_readwrite.c
Changes for merged VM/buffer cache.  Add "bypass" support for sneaking in on
busy buffers.

Submitted by:	John Dyson and David Greenman
1995-01-09 16:06:02 +00:00
..
_sigset.h Added $Id$ 1994-08-02 07:55:43 +00:00
acct.h Process accounting implementation by Chris Demetriou, with minor local 1994-09-26 21:09:15 +00:00
bio.h These changes embody the support of the fully coherent merged VM buffer cache, 1995-01-09 16:06:02 +00:00
bitstring.h BSD 4.4 Lite Include Sources 1994-05-24 09:57:34 +00:00
buf.h These changes embody the support of the fully coherent merged VM buffer cache, 1995-01-09 16:06:02 +00:00
callout.h Made them all idempotent. 1994-08-21 04:42:17 +00:00
cdefs.h Warning and weak reference macros which are used to generate link-time 1994-12-23 22:38:54 +00:00
cdio.h Replaced certain character arrays in structures with msf_lba union. 1994-02-05 09:14:24 +00:00
chio.h New version of scsi code from Julian 1993-11-18 05:03:27 +00:00
clist.h Got rid of unused nclist declaration. 1995-01-07 06:08:15 +00:00
conf.h Declare d_strategy_t here and use it to declare strategy functions. 1994-12-11 23:05:53 +00:00
cons.h Peter Dufaults comconsole changes. 1994-10-20 00:08:31 +00:00
devconf.h Finished device configuration database work for all ISA devices (except `ze') 1994-10-23 21:28:03 +00:00
device.h Added $Id$ 1994-08-02 07:55:43 +00:00
dir.h Added $Id$ 1994-08-02 07:55:43 +00:00
dirent.h Made them all idempotent. 1994-08-21 04:42:17 +00:00
disk.h Made them all idempotent. 1994-08-21 04:42:17 +00:00
disklabel.h disklabel.h: 1994-12-11 23:20:50 +00:00
diskmbr.h disklabel.h: 1994-12-11 23:20:50 +00:00
diskpc98.h disklabel.h: 1994-12-11 23:20:50 +00:00
diskslice.h Add prototype for dsgone. Remove prototype for nonexistent dswlabel. 1994-12-16 16:05:11 +00:00
dkbad.h disklabel.h: 1994-12-11 23:20:50 +00:00
dkstat.h Fix comments on dk_wds and dk_wpms to match code. Improve comment on 1994-12-24 10:11:18 +00:00
dmap.h Added $Id$ 1994-08-02 07:55:43 +00:00
domain.h Made them all idempotent. 1994-08-21 04:42:17 +00:00
errno.h Made them all idempotent. 1994-08-21 04:42:17 +00:00
exec.h Latest ibcs2 changes, add errno conversion table. 1994-10-09 21:50:57 +00:00
fbio.h Made them all idempotent. 1994-08-21 04:42:17 +00:00
fcntl.h Added $Id$ 1994-08-02 07:55:43 +00:00
fdcio.h Included the command definition for FD_DEBUG. 1994-10-30 19:17:39 +00:00
file.h Made them all idempotent. 1994-08-21 04:42:17 +00:00
filedesc.h Prototypes, prototypes and even more prototypes. Not quite done yet, but 1994-10-02 17:25:04 +00:00
filio.h Added $Id$ 1994-08-02 07:55:43 +00:00
ftape.h Pulled over missing ftape.h from 1.1.5 1994-08-14 01:52:48 +00:00
gmon.h Added $Id$ 1994-08-02 07:55:43 +00:00
imgact_aout.h Avoid compiler warnings for overflow in ~(__LDPGSZ - 1). 1994-12-30 08:06:19 +00:00
imgact.h Prototypes, prototypes and even more prototypes. Not quite done yet, but 1994-10-02 17:25:04 +00:00
inflate.h I belive imgact_gzip is finally reentrant. It is also a whole lot more 1994-10-22 11:40:38 +00:00
ioccom.h Added $Id$ 1994-08-02 07:55:43 +00:00
ioctl_compat.h Added $Id$ 1994-08-02 07:55:43 +00:00
ioctl.h Added $Id$ 1994-08-02 07:55:43 +00:00
ipc.h Fix specification of octal constants. 1994-12-30 05:38:14 +00:00
kernel.h Define a new macro. PSEUDO_SET, to hide TEXT_SET(pseudo_set, foo) 1994-10-05 21:23:38 +00:00
ktrace.h Prototypes, prototypes and even more prototypes. Not quite done yet, but 1994-10-02 17:25:04 +00:00
libkern.h Hide the declaration of ffs() if an inline ffs() is implemented. 1994-11-14 14:56:46 +00:00
linedisc.h Declare d_strategy_t here and use it to declare strategy functions. 1994-12-11 23:05:53 +00:00
link_aout.h This is the new link.h from Paul K. Keeping history is even probably a bad 1994-02-13 20:47:18 +00:00
link_elf.h This is the new link.h from Paul K. Keeping history is even probably a bad 1994-02-13 20:47:18 +00:00
lkm.h ktrace.c: added decl of ktrnamei 1994-09-27 20:39:54 +00:00
lockf.h Made them all idempotent. 1994-08-21 04:42:17 +00:00
malloc.h Added M_GZIP for the imgact_gzip code. The gzip-code is likely to be used 1994-10-04 06:51:42 +00:00
map.h Removed unimplemented subr_rmap.c and unused references to it. 1994-09-25 22:31:11 +00:00
mbuf.h Declare a complete prototype for the function pointer *ext_free and the 1994-11-14 13:54:20 +00:00
md5.h Added "const" to the arguments here and there. 1994-11-07 20:48:35 +00:00
mdioctl.h ioctl definitions for the vn driver. 1994-12-04 20:09:16 +00:00
mman.h Made them all idempotent. 1994-08-21 04:42:17 +00:00
mount.h Actually implement the functionality documented in sysctl.h for type CTL_FS. 1994-10-20 00:48:28 +00:00
mouse.h Added the psm driver from 1.1.5. 1994-09-09 11:27:50 +00:00
msg.h Got rid of compiler warnings. 1994-09-17 13:24:29 +00:00
msgbuf.h Made them all idempotent. 1994-08-21 04:42:17 +00:00
mtio.h Andreas Klemm's tape erase patches from 1.1.5.1 1994-10-28 13:19:42 +00:00
namei.h Moved the "relookup" routine into vfs_lookup.c from ufs/ufs/ufs_vnops.c. 1994-09-27 20:33:41 +00:00
nlist_aout.h Document some of the fields used by the new shlib code. 1994-12-23 22:32:48 +00:00
param.h These changes embody the support of the fully coherent merged VM buffer cache, 1995-01-09 16:06:02 +00:00
proc.h These changes embody the support of the fully coherent merged VM buffer cache, 1995-01-09 16:06:02 +00:00
protosw.h Added prototypes here and there. Moved pfctlinput into socket.h. 1994-10-08 22:23:00 +00:00
ptrace.h Process tracing code. Written by Sean Eric Fagan. 1994-08-08 13:00:27 +00:00
queue.h Added $Id$ 1994-08-02 07:55:43 +00:00
reboot.h Implement RB_VERBOSE. This is intended to mean: Print all information which 1994-11-26 09:08:48 +00:00
resource.h Added $Id$ 1994-08-02 07:55:43 +00:00
resourcevar.h Declare fuswintr() and suswintr() the same as fusword() and susword(). 1994-11-14 14:09:38 +00:00
rlist.h Got rid of map.h. It's a leftover from the rmap code, and we use rlists. 1994-10-09 07:35:18 +00:00
rtprio.h "idle priority" support. Based on code from Henrik Vestergaard Draboel, 1994-10-02 04:48:21 +00:00
scsiio.h Added "change address" ioctl for ssc device. 1995-01-08 13:39:46 +00:00
select.h Added $Id$ 1994-08-02 07:55:43 +00:00
selinfo.h Added $Id$ 1994-08-02 07:55:43 +00:00
sem.h Got rid of compiler warnings. 1994-09-17 13:24:29 +00:00
shm.h Prototypes, prototypes and even more prototypes. Not quite done yet, but 1994-10-02 17:25:04 +00:00
signal.h Added $Id$ 1994-08-02 07:55:43 +00:00
signalvar.h Prototypes, prototypes and even more prototypes. Not quite done yet, but 1994-10-02 17:25:04 +00:00
socket.h Submitted by: Wolfgang Stanglmeier <wolf@dentaro.GUN.de> 1995-01-05 19:51:51 +00:00
socketvar.h Prototypes, prototypes and even more prototypes. Not quite done yet, but 1994-10-02 17:25:04 +00:00
sockio.h Add generic part of generic multiple-physical-interface support (the 1994-12-21 22:57:05 +00:00
soundcard.h Remove extra idempotency ifdef and uniformize the other one. 1994-11-14 14:13:13 +00:00
stat.h Prototypes, prototypes and even more prototypes. Not quite done yet, but 1994-10-02 17:25:04 +00:00
syscall-hide.h Actually enable NTP kernel PLL. (Oops!) 1994-12-14 17:57:47 +00:00
syscall.h Updated to add errno conversion table (initialize to zero). 1994-10-09 22:00:17 +00:00
sysctl.h Update stupid declaration in comment to match code. 1994-11-14 13:59:09 +00:00
sysent.h Added errno conversion table for ibcs2 support. 1994-10-09 21:53:05 +00:00
syslimits.h Make CHILD_MAX and OPEN_MAX a tunable parameter. 1994-12-03 17:36:37 +00:00
syslog.h Made them all idempotent. 1994-08-21 04:42:17 +00:00
systm.h Cosmetics. (sort of) Added 19 prototypes. 1994-10-10 00:58:36 +00:00
tablet.h Added $Id$ 1994-08-02 07:55:43 +00:00
termios.h Added $Id$ 1994-08-02 07:55:43 +00:00
time.h Cosmetics. (sort of) Added 19 prototypes. 1994-10-10 00:58:36 +00:00
timeb.h Made them all idempotent. 1994-08-21 04:42:17 +00:00
times.h Added $Id$ 1994-08-02 07:55:43 +00:00
timetc.h Cosmetics. (sort of) Added 19 prototypes. 1994-10-10 00:58:36 +00:00
timex.h Redo Kernel NTP PLL support, kernel side. 1994-09-18 20:40:01 +00:00
tprintf.h Made them all idempotent. 1994-08-21 04:42:17 +00:00
trace.h Made them all idempotent. 1994-08-21 04:42:17 +00:00
tty.h Fight against hanging modems: add timeout to ttywait. 1995-01-05 00:01:07 +00:00
ttychars.h remove unnecessary occurrence of 1994-08-22 19:34:03 +00:00
ttycom.h Fight against hanging modems: add timeout to ttywait. 1995-01-05 00:01:07 +00:00
ttydefaults.h Turn off OXTABS by default. Inspection of systems here finds no commercial 1994-10-11 00:16:28 +00:00
ttydev.h Bring back our support for 57K and 115K. 1994-08-26 12:07:31 +00:00
types.h Extended minor number to include bits 16-31. It was done this way rather 1994-09-25 15:56:25 +00:00
ucred.h Added prototypes here and there. Moved pfctlinput into socket.h. 1994-10-08 22:23:00 +00:00
uio.h Add some prototypes. 1994-09-15 20:24:29 +00:00
un.h Prototypes, prototypes and even more prototypes. Not quite done yet, but 1994-10-02 17:25:04 +00:00
unistd.h Added $Id$ 1994-08-02 07:55:43 +00:00
unpcb.h Made them all idempotent. 1994-08-21 04:42:17 +00:00
user.h Made them all idempotent. 1994-08-21 04:42:17 +00:00
utsname.h Added $Id$ 1994-08-02 07:55:43 +00:00
vadvise.h Made them all idempotent. 1994-08-21 04:42:17 +00:00
vcmd.h Made them all idempotent. 1994-08-21 04:42:17 +00:00
vlimit.h Made them all idempotent. 1994-08-21 04:42:17 +00:00
vmmeter.h These changes embody the support of the fully coherent merged VM buffer cache, 1995-01-09 16:06:02 +00:00
vnioctl.h ioctl definitions for the vn driver. 1994-12-04 20:09:16 +00:00
vnode.h Add VNINACT flag. LFS has a habbit of skipping the ufs_inactive procedure. 1995-01-05 16:22:17 +00:00
vsio.h Made them all idempotent. 1994-08-21 04:42:17 +00:00
wait.h Made them all idempotent. 1994-08-21 04:42:17 +00:00