Commit Graph

160 Commits

Author SHA1 Message Date
dfr
2faa2338ab Use the correct cred for nfs_commit operations. 1995-06-28 17:33:39 +00:00
dg
3c7c1dd62f 1) Converted v_vmdata to v_object.
2) Removed unnecessary vm_object_lookup()/pager_cache(object, TRUE) pairs
   after vnode_pager_alloc() calls - the object is already guaranteed to be
   persistent.
3) Removed some gratuitous casts.
1995-06-28 12:01:13 +00:00
dg
5d0d9f974b Fixed VOP_LINK argument order botch. 1995-06-28 07:06:55 +00:00
dfr
666343f7f0 Changes to support version 3 of the NFS protocol.
The version 2 support has been tested (client+server) against FreeBSD-2.0,
IRIX 5.3 and FreeBSD-current (using a loopback mount).  The version 2 support
is stable AFAIK.
The version 3 support has been tested with a loopback mount and minimally
against an IRIX 5.3 server.  It needs more testing and may have problems.
I have patched amd to support the new variable length filehandles although
it will still only use version 2 of the protocol.

Before booting a kernel with these changes, nfs clients will need to at least
build and install /usr/sbin/mount_nfs.  Servers will need to build and
install /usr/sbin/mountd.

NFS diskless support is untested.

Obtained from: Rick Macklem <rick@snowhite.cis.uoguelph.ca>
1995-06-27 11:07:30 +00:00
joerg
1c9ad9c342 The duplicate information returned in fa_type and fa_mode
is an ambiguity in the NFS version 2 protocol.

VREG should be taken literally as a regular file.  If a
server intents to return some type information differently
in the upper bits of the mode field (e.g. for sockets, or
FIFOs), NFSv2 mandates fa_type to be VNON.  Anyway, we
leave the examination of the mode bits even in the VREG
case to avoid breakage for bogus servers, but we make sure
that there are actually type bits set in the upper part of
fa_mode (and failing that, trust the va_type field).

NFSv3 cleared the issue, and requires fa_mode to not
contain any type information (while also introduing sockets
and FIFOs for fa_type).

The fix has been tested against a variety of NFS servers.
It fixes problems with the ``Tropic'' NFS server for Windows,
while apparently not breaking anything.

Pointed-out by: scott@zorch.sf-bay.org (Scott Hazen Mueller)
1995-06-14 06:23:38 +00:00
rgrimes
1b1ee55538 Merge RELENG_2_0_5 into HEAD 1995-06-11 19:33:05 +00:00
rgrimes
c86f0c7a71 Remove trailing whitespace. 1995-05-30 08:16:23 +00:00
dg
da17d8251a Fixed some serious bugs that resulted in object reference counts not being
handled correctly. This would manifest itself as "object deallocated too
many times" panics and perhaps other strange inconsistencies on NFS servers.

Reviewed by:	me, of course
Submitted by:	John Dyson
1995-05-29 04:01:09 +00:00
dg
2045200a00 Changes to fix the following bugs:
1) Files weren't properly synced on filesystems other than UFS. In some
   cases, this lead to lost data. Most likely would be noticed on NFS.
   The fix is to make the VM page sync/object_clean general rather than
   in each filesystem.
2) Mixing regular and mmaped file I/O on NFS was very broken. It caused
   chunks of files to end up as zeroes rather than the intended contents.
   The fix was to fix several race conditions and to kludge up the
   "b_dirtyoff" and "b_dirtyend" that NFS relies upon - paying attention
   to page modifications that occurred via the mmapping.

Reviewed by:	David Greenman
Submitted by:	John Dyson
1995-05-21 21:39:31 +00:00
dg
b649d7b9c7 Changed swap partition handling/allocation so that it doesn't
require specific partitions be mentioned in the kernel config
file ("swap on foo" is now obsolete).

From Poul-Henning:

The visible effect is this:

As default, unless
        options "NSWAPDEV=23"
is in your config, you will have four swap-devices.
You can swapon(2) any block device you feel like, it doesn't have
to be in the kernel config.

There is a performance/resource win available by getting the NSWAPDEV right
(but only if you have just one swap-device ??), but using that as default
would be too restrictive.

The invisible effect is that:

Swap-handling disappears from the $arch part of the kernel.
It gets a lot simpler (-145 lines) and cleaner.

Reviewed by:	John Dyson, David Greenman
Submitted by:	Poul-Henning Kamp, with minor changes by me.
1995-05-14 03:00:10 +00:00
dyson
20f29bf525 Slight re-ordering of the creation of a vmio object to fix a condition
that can cause NFS I/O failures.
1995-04-21 02:58:49 +00:00
dg
4fbcb34454 Various fixes from John Dyson:
1) Rewrote screwy code that uses an incore buffer without making it busy.
2) Use B_CACHE instead of B_DONE in cases where it is appropriate.
3) Minor code optimization.

This *might* fix kern/345 submitted by Heikki Suonsivu.
1995-04-16 05:05:25 +00:00
dg
1488c6e0c6 Deleted bogus DIAGNOSTIC "nfs_fsync: dirty" message. This can and does
happen normally when there is heavy write activity to a file since the
vnode isn't locked (NFS plays fast and loose with vnode locks). This change
"fixes" PR#267.
1995-03-23 09:43:40 +00:00
dg
fa7269fdef Removed unnecessary call to vnode_pager_uncache(). We automatically clear
the VTEXT flag after all mappers have finished with the object.
1995-03-19 12:08:03 +00:00
dg
ca2e4bfc64 Changed some (incorrect) nfsrv_vput()'s back into regular vput()'s. This
fixes the last of the known NQNFS problems (until I find more, that is :-)).
1995-03-17 07:45:19 +00:00
wollman
8e37e9f479 Add four more filesystem flags:
VFCF_NETWORK (this FS goes over the net)
	VFCF_READONLY (read-write mounts do not make any sense)
	VFCF_SYNTHETIC (data in this FS is not real)
	VFCF_LOOPBACK (this FS aliases something else)

cd9660 is readonly; nullfs, umapfs, and union are loopback; NFS is netowkr;
procfs, kernfs, and fdesc are synthetic.
1995-03-16 20:23:48 +00:00
bde
289f11acb4 Add and move declarations to fix all of the warnings from `gcc -Wimplicit'
(except in netccitt, netiso and netns) and most of the warnings from
`gcc -Wnested-externs'.  Fix all the bugs found.  There were no serious
ones.
1995-03-16 18:17:34 +00:00
dg
e4e3f30221 Removed obsolete vtrace() remnants. 1995-03-04 03:24:45 +00:00
phk
5911bb0d89 YF fix. 1995-02-15 04:21:32 +00:00
dg
65ebc47880 Fixed two more bugs related to the merged cache changes.
Submitted by:	John Dyson
1995-02-15 03:40:00 +00:00
dg
0e8333d2b1 Woops, change a nfsrv_vput back into a nfsrv_vrele.
Submitted by:	John Dyson
1995-02-15 03:38:12 +00:00
dg
01a43e3165 Fixed three bugs related to the merged cache changes. The bugs likely would
make NFS servers flakey - probably the cause of freefall's recent hangs.

Submitted by:	John Dyson
1995-02-15 03:03:03 +00:00
phk
90c55d5f1c YFfix
+int    nfsrv_vput __P(( struct vnode * ));
+int    nfsrv_vrele __P(( struct vnode * ));
+int    nfsrv_vmio __P(( struct vnode * ));
1995-02-14 06:22:18 +00:00
dg
977da6cc01 Changed order of release of vnode/object to fix a problem where the vnode
is freed with an old object still attached (subsequently causing a panic).
Fixes NFS server panic "object/pager mismatch".

Submitted by:	John Dyson
1995-02-06 02:20:40 +00:00
dg
8bb9dc4a89 Fixed bmap run-length brokeness.
Use bmap run-length extension when doing clustered paging.

Submitted by:	John Dyson
1995-02-03 06:46:28 +00:00
dg
667f316f4a Removed a pile of vfs_unbusy_pages()...both unnecessary and wrong - resulted
in serious system instability. Changed a B_INVAL to a B_NOCACHE so that
buffer data is properly disposed of.

Submitted by:	John Dyson, Rick Macklin, and ohki@gssm.otsuka.tsukuba.ac.jp
1995-02-03 03:40:08 +00:00
bde
055f7c204d Fix longstanding benign type mismatch. 1995-01-29 06:37:13 +00:00
dg
07402e2728 Fix conversion to/from nfs v2 time in handling microseconds.
Submitted by:	rick@snowhite.cis.uoguelph.ca
1995-01-10 13:11:42 +00:00
dg
321000d1af Added two missing brelse() calls.
Submitted by:	rick@snowhite.cis.uoguelph.ca
1995-01-10 13:06:51 +00:00
dg
1707d41102 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
jkh
0cfcd5c557 From Gene Stark:
If nd->swap_nblks is zero in nfs_mountroot(), then the system
       comes up without initializing swapdev_vp to an actual vnode pointer.
       The swap pager assumes a non-NULL value for swapdev_vp.

       The fix is to try initializing local swap if no NFS swap space
       is specified.
1995-01-03 07:44:10 +00:00
phk
d9ebc16db1 Would you please correct nfs/nfs_vfsops.c so that the ip address of the
root filesystem is printed out correctly?
It's line 299 in nfs/nfs_vfsops.c.

Reviewed by:	phk
Submitted by:	Luigi Rizzo luigi@iet.unipi.it
1994-12-08 20:59:33 +00:00
wollman
c6477bf5ea Forward-declare a few structures to avoid warning messages. 1994-11-02 00:11:00 +00:00
wollman
a9f28ccb91 Implement fs.nfs MIB variables. 1994-10-23 23:26:18 +00:00
phk
2577d91fc0 This is where the action is. I'm still not sure that swap is 100% OK, but
it seems to work.
1994-10-22 17:52:59 +00:00
phk
071d10f334 This is a bunch of changes from NetBSD. There are a couple of bug-fixes.
But mostly it is changes to use the list-maintenance macros instead of
doing the pointer-gymnastics by hand.

Obtained from: NetBSD
1994-10-17 17:47:45 +00:00
dg
8ec51aef1b Got rid of map.h. It's a leftover from the rmap code, and we use rlists.
Changed swapmap into swaplist.
1994-10-09 07:35:18 +00:00
dg
2add6128e2 Use tsleep() rather than sleep so that 'ps' is more informative about
the wait.
1994-10-06 21:07:04 +00:00
phk
42a70cf15d Prototyping and general gcc-shutting up. Gcc has one warning now which looks
bad, I will get to it eventually, unless somebody beats me to it.
1994-10-02 17:27:07 +00:00
dfr
57b6c0c34c Make NFS ask the filesystems for directory cookies instead of making them
itself.
1994-09-28 16:45:22 +00:00
wollman
467d0c86a3 Forgot to commit this change when making NFS loadable. 1994-09-23 17:49:44 +00:00
wollman
d8d853f4fa Make NFS loadable. 1994-09-22 22:10:49 +00:00
wollman
900d29807d More loadable VFS changes:
- Make a number of filesystems work again when they are statically compiled
  (blush)

- FIFOs are no longer optional; ``options FIFO'' removed from distributed
  config files.
1994-09-22 19:38:41 +00:00
wollman
c289ac89a1 Implemented loadable VFS modules, and made most existing filesystems
loadable.  (NFS is a notable exception.)
1994-09-21 03:47:43 +00:00
dg
f15c464e97 "bogus" fixes from 1.1.5 to work around some cache coherency problems. 1994-08-29 06:09:15 +00:00
paul
9e34f0cb59 More idempotency....... this is fun :-) 1994-08-21 06:50:16 +00:00
dg
f817326b2e Implemented filesystem clean bit via:
machdep.c:
	Changed printf's a little and call vfs_unmountall() if the sync was
	successful.

cd9660_vfsops.c, ffs_vfsops.c, nfs_vfsops.c, lfs_vfsops.c:
	Allow dismount of root FS. It is now disallowed at a higher level.

vfs_conf.c:
	Removed unused rootfs global.

vfs_subr.c:
	Added new routines vfs_unmountall and vfs_unmountroot. Filesystems
	are now dismounted if the machine is properly rebooted.

ffs_vfsops.c:
	Toggle clean bit at the appropriate places. Print warning if an
	unclean FS is mounted.

ffs_vfsops.c, lfs_vfsops.c:
	Fix bug in selecting proper flags for VOP_CLOSE().

vfs_syscalls.c:
	Disallow dismounting root FS via umount syscall.
1994-08-20 16:03:26 +00:00
wollman
f9fc827448 Fix up some sloppy coding practices:
- Delete redundant declarations.
- Add -Wredundant-declarations to Makefile.i386 so they don't come back.
- Delete sloppy COMMON-style declarations of uninitialized data in
  header files.
- Add a few prototypes.
- Clean up warnings resulting from the above.

NB: ioconf.c will still generate a redundant-declaration warning, which
is unavoidable unless somebody volunteers to make `config' smarter.
1994-08-18 22:36:09 +00:00
dg
9daaac06d0 Made the kernel compile cleanly with gcc 2.6.0. Thanks go to Bruce
Evans for suggesting a method to detect various versions of gcc.
1994-08-13 14:21:58 +00:00
dg
59538967d9 Initialize lockf pointer. I missed this when I made NFS use the generic
advlock mechanism, and not doing so results in random system crashes.
1994-08-10 19:48:23 +00:00
dg
4dfef8927a Removed some padding bytes from the nfsnode struct to make the structure
size a power of 2 again. The system complains otherwise - probably because
it wastes space with our malloc scheme otherwise.
1994-08-09 15:10:14 +00:00
dg
8c8cfc5c11 Made lockf advisory locking code generic (rather than ufs specific), and
use it in NFS. This is required both for diskless support and for POSIX
compliance. Note: the support in NFS is only for the local node.

Submitted by:	based on work originally done by Yuval Yurom
1994-08-08 17:31:01 +00:00
dg
a5f60ab1cf Changed B_AGE policy to work correctly in a world with relatively large
buffer caches. The old policy generally ended up caching nothing.
1994-08-08 09:11:44 +00:00
dg
8b4c1e13e0 Converted 'vmunix' to 'kernel'. 1994-08-05 09:28:55 +00:00
dg
7c5373446c Made NFS attribute cache timeouts kernel config file tunable via
NFS_MINATTRTIMO and NFS_MAXATTRTIMO.
1994-08-04 06:03:46 +00:00
dg
8d205697aa Added $Id$ 1994-08-02 07:55:43 +00:00
rgrimes
2469c867a1 The big 4.4BSD Lite to FreeBSD 2.0.0 (Development) patch.
Reviewed by:	Rodney W. Grimes
Submitted by:	John Dyson and David Greenman
1994-05-25 09:21:21 +00:00
rgrimes
d66ac7fb8d This commit was generated by cvs2svn to compensate for changes in r1541,
which included commits to RCS files with non-trunk default branches.
1994-05-24 10:09:53 +00:00
rgrimes
27464aaa8e BSD 4.4 Lite Kernel Sources 1994-05-24 10:09:53 +00:00
rgrimes
8fb65ce818 BSD 4.4 Lite Kernel Sources 1994-05-24 10:09:53 +00:00