Commit Graph

227 Commits

Author SHA1 Message Date
rgrimes
0e1db07cf9 Fix -Wformat warnings from LINT kernel. 1995-05-11 19:26:53 +00:00
dyson
7972592fe7 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
phk
4ebce87282 Add a printf so we can see where we get our rootfs from. 1995-04-25 03:39:50 +00:00
dyson
f7df1ceb91 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
dyson
c6edfe5c18 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
dg
b2c4658480 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
dg
c1c54df7da 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
dg
b804a53282 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
bde
4f64fe43e7 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
dg
1320869559 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
dg
9cd78521d8 Removed redundant newlines that were in some panic strings. 1995-03-19 14:29:26 +00:00
dg
f572de6775 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
dg
ed63bd3315 Fix a call to panic: panic doesn't do token substitution on the panic
string.
1995-03-19 09:47:32 +00:00
dg
e38e0cc286 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
dg
6037557863 Woops, add back that #define...it's used later in the file. 1995-03-18 07:06:51 +00:00
dg
84d7516af3 Fixed comments and removed b_cylinder #define. 1995-03-18 06:38:04 +00:00
dg
c07d989087 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
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
bde
bc56901dc4 Finish the previous change. The device name got lost in diskerr(). 1995-03-12 08:17:30 +00:00
dg
b556619d08 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
dg
c4a2f8db8d Increased default minfree to 8%. 1995-03-10 22:18:16 +00:00
dg
251a107ca6 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
dg
b017660c3e 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
dg
e4e3f30221 Removed obsolete vtrace() remnants. 1995-03-04 03:24:45 +00:00
dg
9dc7842c25 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
se
912b81cc5e 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
bde
79efdcd1e6 Use dsname() to get consistent names. 1995-02-22 22:46:48 +00:00
bde
8abfaf1d18 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
phk
49f19f3584 YF fix. 1995-02-14 06:14:28 +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
cba22c2c7d Removed some unused/obsolete code.
Submitted by:	John Dyson
1995-01-24 10:02:00 +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
gibbs
216ac2cace Change panic messges that are ffs_blah functions to say they are ffs not
ufs functions.
1995-01-04 23:48:04 +00:00
gibbs
11cf69520c 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
bde
6eba657693 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
bde
2f6ca0332d 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
bde
9ca60a2202 Print `slicename' and not a bogus pointer in diskerr() 1994-12-22 04:42:31 +00:00
bde
54d4f4b5e9 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
bde
b4ceae7bef 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
gibbs
02b39f95c4 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
bde
2f3292e0d0 Remove unused `struct disklabel' (the declarations that used it went away).
Uniformize idempotency ifdef.
1994-11-14 13:50:15 +00:00
bde
f2dfc1d8f0 Undo a previous change. <sys/disklabel.h> was broken, not these files. 1994-11-14 13:22:52 +00:00
jkh
076633a669 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
jkh
1ca2f392e1 Julian Elischer's disklabel fixes. 1994-10-27 20:45:13 +00:00
dg
dd9d06bd3f 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
wollman
3a9b1c345a 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
phk
caadb2f384 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
ache
4aec6df298 Add back variable declaration removed by wrong previous cleanups 1994-10-15 04:14:23 +00:00
ache
b01d3c662a Add back variable declaration removed by wrong prevous cleanups. 1994-10-15 04:08:44 +00:00
phk
ffd776502f Cosmetics. make gcc less noisy. Still some way to go here. 1994-10-10 01:04:55 +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
phk
06258807e1 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
phk
ee22b0c649 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
phk
0acc5560ac Cosmetics. 1994-10-08 01:41:15 +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
dfr
57b6c0c34c Make NFS ask the filesystems for directory cookies instead of making them
itself.
1994-09-28 16:45:22 +00:00
phk
d0ad392702 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
dg
3da89b9a18 Removed unimplemented subr_rmap.c and unused references to it. 1994-09-25 22:31:11 +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
d27339a8c6 Call ffs ``ufs'' for the benefit of poor, confused user-land programs. 1994-09-22 01:57:27 +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
bde
55c056a942 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
dg
e789621f5f 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
dg
08512a3127 panic if length is < 0 in ffs_truncate(). 1994-09-02 10:24:55 +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
ef6f4b86ab Made idempotent
Reviewed by:
Submitted by:
1994-08-21 07:19:45 +00:00
paul
bcc18c44d8 Made idempotent
Reviewed by:
Submitted by:
1994-08-21 07:03:56 +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
dg
c97639b923 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
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
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
9de51a06f5 Changed occurrances of "itrunc" to "ffs_truncate" to make Bruce happy. 1994-08-03 08:19:35 +00:00
dg
af911d9034 Completed (hopefully) the kernel support for old style "fastlinks". 1994-08-02 13:51:05 +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
8fb65ce818 BSD 4.4 Lite Kernel Sources 1994-05-24 10:09:53 +00:00