Commit Graph

200 Commits

Author SHA1 Message Date
Bruce Evans
bf25be48a5 Make everything except the unsupported network sources compile cleanly
with -Wnested-externs.
1995-08-16 16:14:28 +00:00
David Greenman
a9e479e2fa Honor -async mount option when doing the inode update.
Obtained from:	4.4BSD-Lite2
1995-08-16 13:16:58 +00:00
David Greenman
628641f8a6 Converted mountlist to a CIRCLEQ.
Partially obtained from: 4.4BSD-Lite2
1995-08-11 11:31:18 +00:00
David Greenman
74ca9fa64f On closer inspection, it turns out that all of the callers of disksort
are already at splbio()...so back out the last change to disksort.
1995-08-07 14:20:27 +00:00
David Greenman
5d210d3fd4 Since buffers can be pulled off of the disk queue at interrupt time and
disksort is called at non-interrupt time and can be actively traversing
the list when that happens, there is a very small window of vulnerability.
Close it by protecting disksort with splbio().
1995-08-07 11:55:32 +00:00
David Greenman
39e68756fb Use bdwrite() rather than brelse(). The cylinder group bitmap modification
is not preserved otherwise.
Note that this is a no-op in FreeBSD, however, as we have doreallocblks
disabled.

Submitted by:	Kirk McKusick
1995-08-07 08:16:32 +00:00
David Greenman
a8ce4271e2 Removed redundant call to vm_object_page_clean: this is already handled
by vfs_msync().
1995-08-06 11:59:48 +00:00
David Greenman
b6dedae69b Removed redundant call to vm_object_page_clean - this is already done
in vfs_msync().
1995-08-06 11:56:42 +00:00
David Greenman
7221ecc0ba Use the correct flags (IO_SYNC -> B_SYNC) when deciding to do a sync or
async write in the section that changes the filesize. The bug resulted
in the updates always being async.

Obtained from:	4.4BSD-Lite2
1995-08-04 05:49:17 +00:00
David Greenman
4777741358 Removed my special-case hack for VOP_LINK and fixed the problem with the
wrong vp's ops vector being used by changing the VOP_LINK's argument order.
The special-case hack doesn't go far enough and breaks the generic
bypass routine used in some non-leaf filesystems. Pointed out by Kirk
McKusick.
1995-08-01 18:51:02 +00:00
Bruce Evans
28f8db1403 Eliminate sloppy common-style declarations. There should be none left for
the LINT configuation.
1995-07-29 11:44:31 +00:00
David Greenman
8997d94f79 Since ufs_ihashget can block, the lock must be checked for each time
the function returns. Also, moved lock into .bss and made minor cosmetic
changes.

Submitted by:	Bruce Evans
1995-07-21 16:20:20 +00:00
David Greenman
2094ddb6f0 Implement a lock in ffs_vget to prevent a race condition where two processes
try allocate the same inode/vnode, causing a duplicate.

Submitted by:	Matt Dillon, slightly reworked by me.
1995-07-21 03:52:40 +00:00
David Greenman
24a1cce34f NOTE: libkvm, w, ps, 'top', and any other utility which depends on struct
proc or any VM system structure will have to be rebuilt!!!

Much needed overhaul of the VM system. Included in this first round of
changes:

1) Improved pager interfaces: init, alloc, dealloc, getpages, putpages,
   haspage, and sync operations are supported. The haspage interface now
   provides information about clusterability. All pager routines now take
   struct vm_object's instead of "pagers".

2) Improved data structures. In the previous paradigm, there is constant
   confusion caused by pagers being both a data structure ("allocate a
   pager") and a collection of routines. The idea of a pager structure has
   escentially been eliminated. Objects now have types, and this type is
   used to index the appropriate pager. In most cases, items in the pager
   structure were duplicated in the object data structure and thus were
   unnecessary. In the few cases that remained, a un_pager structure union
   was created in the object to contain these items.

3) Because of the cleanup of #1 & #2, a lot of unnecessary layering can now
   be removed. For instance, vm_object_enter(), vm_object_lookup(),
   vm_object_remove(), and the associated object hash list were some of the
   things that were removed.

4) simple_lock's removed. Discussion with several people reveals that the
   SMP locking primitives used in the VM system aren't likely the mechanism
   that we'll be adopting. Even if it were, the locking that was in the code
   was very inadequate and would have to be mostly re-done anyway. The
   locking in a uni-processor kernel was a no-op but went a long way toward
   making the code difficult to read and debug.

5) Places that attempted to kludge-up the fact that we don't have kernel
   thread support have been fixed to reflect the reality that we are really
   dealing with processes, not threads. The VM system didn't have complete
   thread support, so the comments and mis-named routines were just wrong.
   We now use tsleep and wakeup directly in the lock routines, for instance.

6) Where appropriate, the pagers have been improved, especially in the
   pager_alloc routines. Most of the pager_allocs have been rewritten and
   are now faster and easier to maintain.

7) The pagedaemon pageout clustering algorithm has been rewritten and
   now tries harder to output an even number of pages before and after
   the requested page. This is sort of the reverse of the ideal pagein
   algorithm and should provide better overall performance.

8) Unnecessary (incorrect) casts to caddr_t in calls to tsleep & wakeup
   have been removed. Some other unnecessary casts have also been removed.

9) Some almost useless debugging code removed.

10) Terminology of shadow objects vs. backing objects straightened out.
    The fact that the vm_object data structure escentially had this
    backwards really confused things. The use of "shadow" and "backing
    object" throughout the code is now internally consistent and correct
    in the Mach terminology.

11) Several minor bug fixes, including one in the vm daemon that caused
    0 RSS objects to not get purged as intended.

12) A "default pager" has now been created which cleans up the transition
    of objects to the "swap" type. The previous checks throughout the code
    for swp->pg_data != NULL were really ugly. This change also provides
    the rudiments for future backing of "anonymous" memory by something
    other than the swap pager (via the vnode pager, for example), and it
    allows the decision about which of these pagers to use to be made
    dynamically (although will need some additional decision code to do
    this, of course).

13) (dyson) MAP_COPY has been deprecated and the corresponding "copy
    object" code has been removed. MAP_COPY was undocumented and non-
    standard. It was furthermore broken in several ways which caused its
    behavior to degrade to MAP_PRIVATE. Binaries that use MAP_COPY will
    continue to work correctly, but via the slightly different semantics
    of MAP_PRIVATE.

14) (dyson) Sharing maps have been removed. It's marginal usefulness in a
    threads design can be worked around in other ways. Both #12 and #13
    were done to simplify the code and improve readability and maintain-
    ability. (As were most all of these changes)

TODO:

1) Rewrite most of the vnode pager to use VOP_GETPAGES/PUTPAGES. Doing
   this will reduce the vnode pager to a mere fraction of its current size.

2) Rewrite vm_fault and the swap/vnode pagers to use the clustering
   information provided by the new haspage pager interface. This will
   substantially reduce the overhead by eliminating a large number of
   VOP_BMAP() calls. The VOP_BMAP() filesystem interface should be
   improved to provide both a "behind" and "ahead" indication of
   contiguousness.

3) Implement the extended features of pager_haspage in swap_pager_haspage().
   It currently just says 0 pages ahead/behind.

4) Re-implement the swap device (swstrategy) in a more elegant way, perhaps
   via a much more general mechanism that could also be used for disk
   striping of regular filesystems.

5) Do something to improve the architecture of vm_object_collapse(). The
   fact that it makes calls into the swap pager and knows too much about
   how the swap pager operates really bothers me. It also doesn't allow
   for collapsing of non-swap pager objects ("unnamed" objects backed by
   other pagers).
1995-07-13 08:48:48 +00:00
David Greenman
aa2cabb958 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
David Greenman
9879652657 Fixed VOP_LINK argument order botch. 1995-06-28 07:06:55 +00:00
Rodney W. Grimes
9b2e535452 Remove trailing whitespace. 1995-05-30 08:16:23 +00:00
Poul-Henning Kamp
fe3ee28802 Mount MFS as root RW. Remounting doesn't make sense.
Reviewed by:	davidg
1995-05-29 03:27:37 +00:00
David Greenman
347a022fa7 Kill bogus vnode_pager_setsize(). It was being called at the wrong time
and resulted in the object size being too small. This caused bad things
to happen later when the file was mapped.

Reviewed by:	John Dyson
1995-05-28 04:32:23 +00:00
David Greenman
61f5d51062 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
David Greenman
2976b7f19f NFS diskless operation was broken because swapdev_vp wasn't initialized.
These changes solve the problem in a general way by moving the
initialization out of the individual fs_mountroot's and into swaponvp().

Submitted by:	Poul-Henning Kamp
1995-05-19 03:27:08 +00:00
David Greenman
1469eec81e Fixed incompleteness that would allow dirty filesystems to get mounted
when the single user shell was terminated. These changes disallow mounting
or R/W upgrading filesystems that are dirty unless "-f" (force) option
is used with mount. /etc/rc has been modified to abort the startup if
one or more non-nfs partitions fail to mount.

Reviewed by:	Poul-Henning Kamp, Rod Grimes
1995-05-15 08:39:37 +00:00
David Greenman
9b5bb13bf8 From Bruce Evans:
I ran into another manifestation of the problem reported in PR 211 and
fixed it. Try this:

as non-root:
	cd /tmp; mkdir x y x/z
as root:
	chown root /tmp/x/z
as non-root:
	cd /tmp/x; mv z ../y		# EACCES as expected
as root:
	cd /tmp/x; mv z ../y		# EINVAL NOT as expected

This is because ufs_rename() sets IN_RENAME and fails to clear it.

Reviewed by:	davidg
Submitted by:	bde
1995-05-15 07:31:09 +00:00
Rodney W. Grimes
b2b795f07c Fix -Wformat warnings from LINT kernel. 1995-05-11 19:26:53 +00:00
John Dyson
f33775afcf Limit filesize to the amount that the VM system can currently handle
(2GB).  If this limit is not imposed, then filesystem corruption will
ensue when files larger than 2GB are created.  This is temporary,
and the underlying limitation will be removed later.
1995-05-01 23:20:24 +00:00
Poul-Henning Kamp
41dffd203c Add a printf so we can see where we get our rootfs from. 1995-04-25 03:39:50 +00:00
John Dyson
a4256da5ad Fixed the mmap hang fix previously committed so that it works
with options DIAGNOSTIC, and clear up an additional reference
count problem.
1995-04-25 03:32:37 +00:00
John Dyson
e5f751a9b2 Changes to get rid of ufslk2 hangs when doing read/write to/from
mmap regions that are in the same file as the read/write.
1995-04-24 05:13:28 +00:00
David Greenman
5291a9a0ac Make vegetarian and animal rights people happy and use 0xdeadc0de instead
of 0xdeadbeef as the 'spare' value.
1995-04-16 11:25:47 +00:00
David Greenman
81c6e3e558 Handle the "syncing VCHR vnode hang" problem a little differently; just
don't lock the vnode - it doesn't appear to ever be necessary for VCHR
vnode/inodes. This fixes a bug introduced in the previous commit that
caused tty timestamps to act strange (causing 'w' and 'finger' to show
the tty wasn't idle when it may have been for hours).
1995-04-11 04:23:47 +00:00
David Greenman
f6b04d2bfb Changes from John Dyson and myself:
Fixed remaining known bugs in the buffer IO and VM system.

vfs_bio.c:
Fixed some race conditions and locking bugs. Improved performance
by removing some (now) unnecessary code and fixing some broken
logic.
Fixed process accounting of # of FS outputs.
Properly handle NFS interrupts (B_EINTR).

(various)
Replaced calls to clrbuf() with calls to an optimized routine
called vfs_bio_clrbuf().

(various FS sync)
Sync out modified vnode_pager backed pages.

ffs_vnops.c:
Do two passes: Sync out file data first, then indirect blocks.

vm_fault.c:
Fixed deadly embrace caused by acquiring locks in the wrong order.

vnode_pager.c:
Changed to use buffer I/O system for writing out modified pages. This
should fix the problem with the modification date previous not getting
updated. Also dramatically simplifies the code. Note that this is
going to change in the future and be implemented via VOP_PUTPAGES().

vm_object.c:
Fixed a pile of bugs related to cleaning (vnode) objects. The performance
of vm_object_page_clean() is terrible when dealing with huge objects,
but this will change when we implement a binary tree to keep the object
pages sorted.

vm_pageout.c:
Fixed broken clustering of pageouts. Fixed race conditions and other
lockup style bugs in the scanning of pages. Improved performance.
1995-04-09 06:03:56 +00:00
Bruce Evans
3aa12267a5 Add and move declarations to fix all of the warnings from `gcc -Wimplicit'
(except in netccitt, netiso and netns) that I didn't notice when I fixed
"all" such warnings before.
1995-03-28 07:58:53 +00:00
David Greenman
f57459b632 Removed third arg (vmio) to allocbuf() that was added with the original
merged cache changes, and figure it out based on the B_VMIO buffer flag.
Fixes a problem where delayed write VMIO buffers would sometimes get
recopied into kernel-alloced memory.

Submitted by:	John Dyson
1995-03-26 23:29:13 +00:00
David Greenman
edf8a81561 Removed redundant newlines that were in some panic strings. 1995-03-19 14:29:26 +00:00
David Greenman
1b2cfc2645 Backed out change to panic call: As Chris just pointed out to me, panic()
does indeed work like printf(). gdb gets the string untranslated for some
reason.
1995-03-19 13:44:03 +00:00
David Greenman
1e1ece7deb Fix a call to panic: panic doesn't do token substitution on the panic
string.
1995-03-19 09:47:32 +00:00
David Greenman
4e83f749ec Don't sync the inode date changes of character special devices
during the FS sync. The system would appear to hang momentarily
if there was a large backlog of I/O. This is because the vnode
remains locked during the output - preventing normal character
I/O. The problem was exacerbated by the FFS contiguous block
allocation fixes and a semi-broken disksort(). The inode/date
will still be synced during a normal FS dismount and whenever
the inode is changed for other reasons.
1995-03-18 18:03:29 +00:00
David Greenman
0338878131 Woops, add back that #define...it's used later in the file. 1995-03-18 07:06:51 +00:00
David Greenman
9e4817309b Fixed comments and removed b_cylinder #define. 1995-03-18 06:38:04 +00:00
David Greenman
89247e0412 Integrated change from 1.1.5: Fixed broken disksort to sort by pblkno
rather than by cylinder.
1995-03-18 06:32:48 +00:00
Bruce Evans
b5e8ce9f12 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
Bruce Evans
ec00834c18 Finish the previous change. The device name got lost in diskerr(). 1995-03-12 08:17:30 +00:00
David Greenman
9a4bf98e66 Removed gratuitous and *extremely* evil setting of OBJ_INTERNAL. This
caused a cascade of problems including kernel memory corruption, file
corruption, system hangs, and panics.
1995-03-11 22:23:14 +00:00
David Greenman
07be9bd45f Increased default minfree to 8%. 1995-03-10 22:18:16 +00:00
David Greenman
e23c0ff5a0 The threshold for switching from time-space and space-time is too small
when minfree is 5%...so make it stay at space in this case.

Submitted by:	Kirk McKusick
1995-03-10 22:11:50 +00:00
David Greenman
57677027ac Patch to fix quota panic from Mike Karels:
allow Q_SYNC regardless of "target" uid, we allow it with -1;
fix bug that caused all ops to refer to user quotas, not group.

Submitted by:	Mike Karels
1995-03-10 22:06:39 +00:00
David Greenman
403ef252fa Removed obsolete vtrace() remnants. 1995-03-04 03:24:45 +00:00
David Greenman
22470903a0 Fixes from John Dyson to work around vnode lock hang. Basically, remove
the VOP_BMAP calls, and add one to bdwrite.

Submitted by:	John Dyson
1995-03-03 22:13:16 +00:00
Stefan Eßer
7368f324a8 Don't try to make use of useless rotational position optimisation,
if all free blocks are in the same bucket (i.e. NRPOS == 1).
Else a free block is choosen, possibly from a different cylinder,
even if the block succeeding bpref was free ...

Submitted by:	se
1995-02-27 17:43:57 +00:00
Bruce Evans
30ca037de1 Use dsname() to get consistent names. 1995-02-22 22:46:48 +00:00
Bruce Evans
de13c90ff2 Adjust slice names in diskerr() for the rearranged slice numbers. The
mapping from numbers to names is messy for backwards compatibility.
E.g., for driver "sd", unit "0":

slice 0: omit the slice number for compatibility; names are sd0[a-h].
slice 1: omit the partition letter 'c' because the whole disk device
         shouldn't have anything to do with partitions; sd0 is the
         only name.
slices 2-31: subtract 1 from slice number to compensate for the
         compatibility slice 0; names are sd0s[1-30][a-h].
1995-02-16 14:47:38 +00:00
Poul-Henning Kamp
d2fc53150b YF fix. 1995-02-14 06:14:28 +00:00
David Greenman
efc68ce10f 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
David Greenman
e5501f43a5 Removed some unused/obsolete code.
Submitted by:	John Dyson
1995-01-24 10:02:00 +00:00
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
Justin T. Gibbs
61acca9f2f Change panic messges that are ffs_blah functions to say they are ffs not
ufs functions.
1995-01-04 23:48:04 +00:00
Justin T. Gibbs
1a451e33ef LFS stability patches. There is still a problem with directory update
ordering that can prove fatal during large batches of deletes, but this
is much better than it was.  I probably won't be putting much more time
into this until Seltzer releases her new version of LFS which has
fragment support.  This should be availible just before USENIX.
1995-01-04 23:46:34 +00:00
Bruce Evans
59f08b8ba7 Use the same current time throughout ffs_update().
Update some macro names in comments.

Don't use MNT_WAIT for something not related to mounting.
1994-12-27 14:44:42 +00:00
Bruce Evans
e4bebee03e Use the same current time throughout ITIMES(). I want all current
timestamps for an atomic operation such as rename() on a local file
system to be identical.

Uniformize yet another idempotency ifdef.  The comment nesting was
bogus.
1994-12-27 13:59:14 +00:00
Bruce Evans
222d875bec Print `slicename' and not a bogus pointer in diskerr() 1994-12-22 04:42:31 +00:00
Bruce Evans
fb72042b5c Duplicate readdisklabel() and writedisklabel() and remove DOS stuff from
from the copies to create correct_readdisklabel() and
correct_writedisklabel().

Print the slice number in diskerr() if it is nonzero.
1994-12-16 16:31:23 +00:00
Bruce Evans
3339943545 Submitted by: Kirk McKusick
Allow chown() to return success if the gid isn't changed even if
the gid is not the caller's.  Such gids are normal for files created
in world-writable directories sucj as /tmp.  This "fixes" annoying
error messages for mv'ing files created in /tmp to another file
system.  mv still preserves the foreign gid of /tmp, but now does
it silently.
1994-11-26 19:38:30 +00:00
Justin T. Gibbs
471e5fa096 John Dyson's patches (and a few from me too) to LFS to use a different
buffering scheme and make it more in tune with FreeBSD's vfs_bio
implementation.  The filesystem seems fairly stable, but I wouldn't recommend
it to anyone not willing to experience problems.  This is very green code and
has the limitation that YOU CAN ONLY HAVE ONE LFS PARTITION MOUNTED AT A TIME.

What LFS is good for:

	Non fsynced writes	FASTER THAN FFS
	Large deletions		Increadibly fast

Reads are a little bit slower than FFS right now, but that is a factor of
how under optimized this code is.  LFS should in theory perform at least as
well as FFS under fsync (iozone) type loads, and this is what I'm currently
working on.

Reviewed by:	Justin Gibbs
Submitted by:	John Dyson
Obtained from:
1994-11-17 01:30:53 +00:00
Bruce Evans
ad7dee4d66 Remove unused `struct disklabel' (the declarations that used it went away).
Uniformize idempotency ifdef.
1994-11-14 13:50:15 +00:00
Bruce Evans
36633bf49d Undo a previous change. <sys/disklabel.h> was broken, not these files. 1994-11-14 13:22:52 +00:00
Jordan K. Hubbard
94a92413cd From: fredriks@mcs.com (Lars Fredriksen)
...
It turns out that these files do not include <sys/dkbad.h> before
<sys/disklabel.h>.
Submitted by:	fredriks
1994-10-28 12:42:05 +00:00
Jordan K. Hubbard
54c7241bd3 Julian Elischer's disklabel fixes. 1994-10-27 20:45:13 +00:00
David Greenman
901ba606c5 Restrict fs_maxfilesize to 2^40, and check against this in ffs_truncate().
This is part of a bug fix from Kirk McKusick to work around problems in FFS
related to the blkno of a 64bit offset not fitting into an int. Note the
proper solution would be to deal with 64bit block numbers, but doing this
would require sweeping changes; some other day perhaps.

Submitted by:	Marshall Kirk McKusick
1994-10-22 02:27:35 +00:00
Garrett Wollman
091b0456f4 Make my ALLDEVS kernel compile (basically, LINT minus a lot of options).
This involves fixing a few things I broke last time.
1994-10-21 01:19:28 +00:00
Poul-Henning Kamp
1be9232f73 This basically allows you to stick a disklabel on any partition.
For it to be useful, you must stick your disklabel on the partition which
starts where the MBR says FreeBSD lives.  If you don't do that, you might
get a bad day.

Oh, that probably also means that putting swap there is a bad idea...
1994-10-17 02:31:33 +00:00
Andrey A. Chernov
ffcef9bdf8 Add back variable declaration removed by wrong previous cleanups 1994-10-15 04:14:23 +00:00
Andrey A. Chernov
2fe5b4cb4e Add back variable declaration removed by wrong prevous cleanups. 1994-10-15 04:08:44 +00:00
Poul-Henning Kamp
c1d9efcbb9 Cosmetics. make gcc less noisy. Still some way to go here. 1994-10-10 01:04:55 +00:00
David Greenman
35c10d2239 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
Poul-Henning Kamp
0f954e5d09 POSSIBLE BOGUS CODE found, (related to dos-partitions) in ufs_disksubr.c,
look for CC_WALL.
Cosmetics, a couple of unused vars.
1994-10-08 06:57:29 +00:00
Poul-Henning Kamp
c96716023b Cosmetics for gcc -Wall. A couple of unused "int i"'s removed and a couple of
prototypes added.  And the usual () work.
1994-10-08 06:20:06 +00:00
Poul-Henning Kamp
5c0c90e877 Cosmetics. 1994-10-08 01:41:15 +00:00
David Greenman
824789192c Use tsleep() rather than sleep so that 'ps' is more informative about
the wait.
1994-10-06 21:07:04 +00:00
Doug Rabson
9abf4d6ee0 Make NFS ask the filesystems for directory cookies instead of making them
itself.
1994-09-28 16:45:22 +00:00
Poul-Henning Kamp
3810319894 Moved the "relookup" routine into vfs_lookup.c from ufs/ufs/ufs_vnops.c.
Several FS's use this, so it doesn't belong in ufs.  (unionfs, msdosfs and ufs)
1994-09-27 20:33:41 +00:00
David Greenman
c770b47d56 Removed unimplemented subr_rmap.c and unused references to it. 1994-09-25 22:31:11 +00:00
Garrett Wollman
c9b1d6048d 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
Garrett Wollman
862cdb8eb6 Call ffs ``ufs'' for the benefit of poor, confused user-land programs. 1994-09-22 01:57:27 +00:00
Garrett Wollman
c901836c14 Implemented loadable VFS modules, and made most existing filesystems
loadable.  (NFS is a notable exception.)
1994-09-21 03:47:43 +00:00
Bruce Evans
1819efa6e7 Use `1' for a boolean value instead of something irrelevant (MNT_WAIT)
that happens to be nonzero.
1994-09-20 05:53:24 +00:00
David Greenman
cde7257454 Eliminated a whole pile of ancient (we're taking 4.3BSD) VM system
related #define constants. Corrected incorrect VM_MAX_KERNEL_ADDRESS.

Reviewed by:	John Dyson
1994-09-12 11:38:31 +00:00
David Greenman
01825ed3fa panic if length is < 0 in ffs_truncate(). 1994-09-02 10:24:55 +00:00
David Greenman
1cdeb653a8 "bogus" fixes from 1.1.5 to work around some cache coherency problems. 1994-08-29 06:09:15 +00:00
Paul Richards
3301cc3c0a Made idempotent
Reviewed by:
Submitted by:
1994-08-21 07:19:45 +00:00
Paul Richards
eb9fb78c34 Made idempotent
Reviewed by:
Submitted by:
1994-08-21 07:03:56 +00:00
David Greenman
e0e9c42112 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
David Greenman
7b42c960f8 1) cleaned up after Garrett - fixed more redundant declarations, changed
use of timeout_t -> timeout_func_t in aha1542 and aha1742 drivers.
2) fix a bug in the portalfs that was uncovered by better prototyping -
   specifically, the time must be converted from timeval to timespec
   before storing in va_atime.
3) fixed/added some miscellaneous prototypes
1994-08-20 03:49:02 +00:00
Garrett Wollman
f23b4c91c4 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
David Greenman
92dc7331c9 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
David Greenman
866dba7305 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
David Greenman
d319b932ae Changed occurrances of "itrunc" to "ffs_truncate" to make Bruce happy. 1994-08-03 08:19:35 +00:00
David Greenman
09ce307fbe Completed (hopefully) the kernel support for old style "fastlinks". 1994-08-02 13:51:05 +00:00
David Greenman
3c4dd3568f Added $Id$ 1994-08-02 07:55:43 +00:00
Rodney W. Grimes
26f9a76710 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
Rodney W. Grimes
df8bae1de4 BSD 4.4 Lite Kernel Sources 1994-05-24 10:09:53 +00:00