Commit Graph

244 Commits

Author SHA1 Message Date
bde
4060d58634 Fixed corruption of the per-group used directories count. It wasn't
decremented when directories were removed because rev.1.12 broke the
fixup of the i_mode of the inode being removed.
1997-12-03 16:46:21 +00:00
phk
f86993e3c3 Fix the copyright and attribution on this file. I forgot this
when the file was cloned.
1997-12-02 21:20:06 +00:00
bde
c7448527e1 Use the same algorithm as ffs for generation numbers. 1997-12-02 11:42:28 +00:00
bde
588c9db8ef Removed __FreeBSD__ ifdefs. 1997-12-02 10:39:42 +00:00
bde
5549d2f6ef Fixed missing #include of "opt_quota.h".
Sorted the functions into the same order as in ufs_vnops.c so that this
can be compared with the latter without getting 2627 lines of diffs.
Now we get only 1920 lines of diffs.
1997-11-24 19:25:24 +00:00
bde
f48794b9f5 Fixed overflow in ufs_getblns(). For ufs on systems with 32-bit ints,
triple indirect blocks only worked for block sizes of 4K, since
MNINDIR(ump)**3 overflows for larger block sizes (e.g.,
(8192/4)**3 = 2**33 > INT_MAX).  This fix is not the obvious one of
changing some types to 64 bits.  It rearranges the code to avoid some
unnecessary 64-bit calculations.

Reviewed by:	Kirk McKusick <mckusick@McKusick.COM>
1997-11-24 16:33:03 +00:00
bde
2001000d90 Use consistent description strings for M_EXT2NODE. This also fixes a
spelling error in the unused string.
1997-11-20 16:56:25 +00:00
phk
9edb1e0f35 Give ext2fs it's own VOP_REMOVE, VOP_LINK, VOP_RENAME, VOP_MKDIR, VOP_RMDIR,
VOP_CREATE, VOP_MKNOD, VOP_SYMLINK and ext2_makeinode().
1997-11-18 14:19:44 +00:00
julian
ae22df605c Reviewed by: various.
Ever since I first say the way the mount flags were used I've hated the
fact that modes, and events, internal and exported, and short-term
and long term flags are all thrown together. Finally it's annoyed me enough..
This patch to the entire FreeBSD tree adds a second mount flag word
to the mount struct. it is not exported to userspace. I have moved
some of the non exported flags over to this word. this means that we now
have 8 free bits in the mount flags. There are another two that might
well move over, but which I'm not sure about.
The only user visible change would have been in pstat -v, except
that davidg has disabled it anyhow.
I'd still like to move the state flags and the 'command' flags
apart from each other.. e.g. MNT_FORCE really doesn't have the
same semantics as MNT_RDONLY, but that's left  for another day.
1997-11-12 05:42:33 +00:00
bde
e38eb2dd99 Removed unused #includes. The need for most of them went away with
recent changes (docluster* and vfs improvements).
1997-10-27 13:33:47 +00:00
phk
956a3f58e3 I guess nobody uses ext2fs in current ?
vop_lookup is back now, don't know whan I lost it.
1997-10-26 21:05:40 +00:00
phk
14aa7b01ea Make a set of VOP standard lock, unlock & islocked VOP operators, which
depend on the lock being located at vp->v_data.  Saves 3x3 identical
vop procs, more as the other filesystems becomes lock aware.
1997-10-17 12:36:19 +00:00
phk
373a865574 Another VFS cleanup "kilo commit"
1.  Remove VOP_UPDATE, it is (also) an UFS/{FFS,LFS,EXT2FS,MFS}
    intereface function, and now lives in the ufsmount structure.

2.  Remove VOP_SEEK, it was unused.

3.  Add mode default vops:

    VOP_ADVLOCK          vop_einval
    VOP_CLOSE            vop_null
    VOP_FSYNC            vop_null
    VOP_IOCTL            vop_enotty
    VOP_MMAP             vop_einval
    VOP_OPEN             vop_null
    VOP_PATHCONF         vop_einval
    VOP_READLINK         vop_einval
    VOP_REALLOCBLKS      vop_eopnotsupp

    And remove identical functionality from filesystems

4.   Add vop_stdpathconf, which returns the canonical stuff.  Use
     it in the filesystems.  (XXX: It's probably wrong that specfs
     and fifofs sets this vop, shouldn't it come from the "host"
     filesystem, for instance ufs or cd9660 ?)

5.   Try to make system wide VOP functions have vop_* names.

6.   Initialize the um_* vectors in LFS.

(Recompile your LKMS!!!)
1997-10-16 20:32:40 +00:00
phk
d166441755 VFS mega cleanup commit (x/N)
1.  Add new file "sys/kern/vfs_default.c" where default actions for
    VOPs go. Implement proper defaults for ABORTOP, BWRITE, LEASE,
    POLL, REVOKE and STRATEGY.  Various stuff spread over the entire
    tree belongs here.

2.  Change VOP_BLKATOFF to a normal function in cd9660.

3.  Kill VOP_BLKATOFF, VOP_TRUNCATE, VOP_VFREE, VOP_VALLOC.  These
    are private interface functions between UFS and the underlying
    storage manager layer (FFS/LFS/MFS/EXT2FS).  The functions now
    live in struct ufsmount instead.

4.  Remove a kludge of VOP_ functions in all filesystems, that did
    nothing but obscure the simplicity and break the expandability.
    If a filesystem doesn't implement VOP_FOO, it shouldn't have an
    entry for it in its vnops table.  The system will try to DTRT
    if it is not implemented.  There are still some cruft left, but
    the bulk of it is done.

5.  Fix another VCALL in vfs_cache.c (thanks Bruce!)
1997-10-16 10:50:27 +00:00
julian
a901089b08 Two more places where root filesystems were mounted, put them at the head of
the mount list  in case there is already  DEVFS present.
1997-10-16 08:16:34 +00:00
phk
f7aabc3ac9 vnops megacommit
1.  Use the default function to access all the specfs operations.
2.  Use the default function to access all the fifofs operations.
3.  Use the default function to access all the ufs operations.
4.  Fix VCALL usage in vfs_cache.c
5.  Use VOCALL to access specfs functions in devfs_vnops.c
6.  Staticize most of the spec and fifofs vnops functions.
7.  Make UFS panic if it lacks bits of the underlying storage handling.
1997-10-15 13:24:07 +00:00
phk
92eeb70dc6 Hmm, realign the vnops into two columns. 1997-10-15 10:05:29 +00:00
phk
26130e0b77 Stylistic overhaul of vnops tables.
1. Remove comment stating the blatantly obvious.
        2. Align in two columns.
        3. Sort all but the default element alphabetically.
        4. Remove XXX comments pointing out entries not needed.
1997-10-15 09:22:02 +00:00
phk
15a4cff98f I think my previous change may have opened a race conditio.
This patch does the same thing, with no change in semantics.
1997-10-14 18:46:48 +00:00
phk
2b4a6ad696 ufs_ihashrem() should not be called from the UFS layer, but from the
lower layer (LFS/FFS/?) like the rest of the ihash functions.
Otherwise it is impossible to make a lower layer that doesn't use the
ihash facility.
1997-10-14 14:22:31 +00:00
phk
36e7a51ea1 Last major round (Unless Bruce thinks of somthing :-) of malloc changes.
Distribute all but the most fundamental malloc types.  This time I also
remembered the trick to making things static:  Put "static" in front of
them.

A couple of finer points by:	bde
1997-10-12 20:26:33 +00:00
phk
645e7b2ab6 Distribute and statizice a lot of the malloc M_* types.
Substantial input from:	bde
1997-10-11 18:31:40 +00:00
phk
c0089963c1 Make ufs_reclaim free the underlying inode. 1997-10-10 18:18:13 +00:00
phk
0a78fdbf4c Mega commit to cleanup the "remaining nits" after my malloc change.
Introduce a M_EXT2NODE for ext2fs vnodes.
Use generic ufs_reclaim instead of hijacking ffs_reclaim.
1997-10-10 18:13:06 +00:00
bde
3d4ee35e7c `numdirtybuffers' was not maintained properly. This caused excessive
flushing of buffers in an attempt to reduce numdirtybuffers, and
perhaps other problems.
1997-10-07 11:10:18 +00:00
kato
70a6b57455 Oops, include <sys/conf.h>.
Reminded-by:	Simon Shapiro <Shimon@i-Connect.Net>
1997-09-28 02:23:10 +00:00
kato
fe9b86cf0b Clustered read and write are switched at mount-option level.
1. Clustered I/O is switched by the MNT_NOCLUSTERR and MNT_NOCLUSTERW
   bits of the mnt_flag.  The sysctl variables, vfs.foo.doclusterread
   and vfs.foo.doclusterwrite are deleted.  Only mount option can
   control clustered I/O from userland.
2. When foofs_mount mounts block device, foofs_mount checks D_CLUSTERR
   and D_CLUSTERW bits of the d_flags member in the block device switch
   table.  If D_NOCLUSTERR / D_NOCLUSTERW are set, MNT_NOCLUSTERR /
   MNT_NOCLUSTERW bits will be set.  In this case, MNT_NOCLUSTERR and
   MNT_NOCLUSTERW cannot be cleared from userland.
3. Vnode driver disables both clustered read and write.
4. Union filesystem disables clutered write.

Reviewed by:	bde
1997-09-27 13:40:20 +00:00
joerg
091bf8d373 Make MFS a supported option, finally. 1997-09-22 21:24:03 +00:00
peter
ce7feabb13 Convert select -> poll.
Delete 'always succeed' select/poll handlers, replaced with generic call.
Flag missing vnode op table entries.
1997-09-14 02:58:12 +00:00
phk
a5f03d2116 Remove some stuff from lookup which is now handled centrally. 1997-09-10 19:39:03 +00:00
bde
bcade9a903 Removed yet more vestiges of config-time swap configuration and/or
cleaned up nearby cruft.
1997-09-07 16:21:11 +00:00
bde
6ffb8bf9af Removed unused #includes. 1997-09-02 20:06:59 +00:00
phk
fddfc9d5bb Uncut&paste cache_lookup().
This unifies several times in theory indentical 50 lines of code.

The filesystems have a new method: vop_cachedlookup, which is the
meat of the lookup, and use vfs_cache_lookup() for their vop_lookup
method.  vfs_cache_lookup() will check the namecache and pass on
to the vop_cachedlookup method in case of a miss.

It's still the task of the individual filesystems to populate the
namecache with cache_enter().

Filesystems that do not use the namecache will just provide the
vop_lookup method as usual.
1997-08-26 07:32:51 +00:00
kato
7057ee806e Code cleanup. Removed !FreeBSD code arround sysctl stuff. Renamed
doclusterread/doclusterwrite into ext2_doclusterread and
ext2_doclusterwrite, which are unique names.  Moved #include of
<sys/sysctl.h> to the top of the file.

Pointed out by:		Bruce Evans <bde@zeta.org.au>
1997-08-24 11:23:17 +00:00
kato
c2d70f7400 Added sysctl args vfs.ext2fs.doclusterread and
vfs.ext2fs.doclusterwrite which control cluster read/write operation
on ext2fs filesystem.
1997-08-23 07:41:02 +00:00
wollman
4542c1cf5d Fix all areas of the system (or at least all those in LINT) to avoid storing
socket addresses in mbufs.  (Socket buffers are the one exception.)  A number
of kernel APIs needed to get fixed in order to make this happen.  Also,
fix three protocol families which kept PCBs in mbufs to not malloc them
instead.  Delete some old compatibility cruft while we're at it, and add
some new routines in the in_cksum family.
1997-08-16 19:16:27 +00:00
dyson
ec0474c458 Fix a problem with ext2fs so that filesystems mounted at reboot don't
keep ahold of buffers, and therefore leave filesystems dirty.  I haven't
been able to test, but the code compiles.  Those who run -current, please
test and report back!!!  (Sorry :-)).

PR:		kern/3571
Submitted by:	Dirk Keunecke <dk@panda.rhein-main.de>
1997-08-04 05:10:31 +00:00
bde
c21548a94c Fixed comment about i_spare. 1997-07-13 15:40:31 +00:00
dyson
eb8e1f5e4e Fix a problem with the VN device. Specifically, the VN device can
cause a problem of spiraling death due to buffer resource limitations.
The vfs_bio code in general had little ability to handle buffer resource
management, and now it does.  Also, there are a lot more knobs for tuning the
vfs_bio code now.  The knobs came free because of the need that there
always be some immediately available buffers (non-delayed or locked) for
use.  Note that the buffer cache code is much less likely to get bogged
down with lots of delayed writes, even more so than before.
1997-06-15 17:56:53 +00:00
bde
80b2960a8c Removed unused #includes. 1997-06-14 14:17:07 +00:00
phk
a10b0af918 Shrink struct inode by 20 bytes, so that malloc wastes less space.
Pointed out by:	bde
1997-05-22 07:30:55 +00:00
dfr
f5e07dc7a9 Support NFS cookies in VOP_READDIR, allowing ext2fs filesystems to be
exported via NFS.

2.2 candidate.
1997-04-05 12:23:44 +00:00
bde
33314720e2 Fixed gratuitous ANSIisms.
Removed trailing newline from panic messages.
1997-04-01 15:22:59 +00:00
bde
7468722294 Use __i386__ instead of i386 in ifdefs.
Don't compile unused (debugging?) functions.
1997-04-01 15:10:38 +00:00
bde
d6083d03a2 Removed nested include of <ufs/ufs/dir.h>. Use the pre-Lite2 hack of
defining doff_t both here and in <ufs/ufs/dir.h> so that this file
is independent of <ufs/ufs/dir.h>.  It still has old prerequisites
<sys/param.h> and <ufs/ufs/quota.h>, and a new Lite2 prerequisite of
<sys/lock.h>, sigh.

This might fix lsof, which was broken by namespace pollution giving
conflicting definitions of DIRBLKSIZ.
1997-04-01 08:02:00 +00:00
bde
117209856b Don't include <sys/ioctl.h> in the kernel. Stage 1: don't include
it when it is not used.  In most cases, the reasons for including it
went away when the special ioctl headers became self-sufficient.
1997-03-24 11:25:10 +00:00
bde
0d3591bdbd Don't #include <sys/fcntl.h> in <sys/file.h> if KERNEL is defined.
Fixed everything that depended on getting fcntl.h stuff from the wrong
place.  Most things don't depend on file.h stuff at all.
1997-03-23 03:37:54 +00:00
bde
0bc1781701 Fixed some invalid (non-atomic) accesses to `time', mostly ones of the
form `tv = time'.  Use a new function gettime().  The current version
just forces atomicicity without fixing precision or efficiency bugs.
Simplified some related valid accesses by using the central function.
1997-03-22 06:53:45 +00:00
mpp
97b9102cae Update a number of routines to reflect the actual name
of the routine that caused the panic.
1997-03-09 06:10:36 +00:00
bde
f0abbb2b2d Removed unused flag IN_RECURSE and unused struct member i_lockcount. 1997-03-03 16:25:46 +00:00
bde
064d53aea0 Removed useless setting of IN_RECURSE. The (anti) locking for this needs
to be done in a different way, if at all.
1997-03-03 16:23:15 +00:00
dyson
96d17830f3 Correct the port of ext2fs to Lite/2. I incorrectly used ufs_reclaim
instead of ffs_reclaim.
1997-02-26 05:08:18 +00:00
peter
94b6d72794 Back out part 1 of the MCFH that changed $Id$ to $FreeBSD$. We are not
ready for it yet.
1997-02-22 09:48:43 +00:00
bde
be66779edf Fixed type mismatches. i_spare[N] in ufs/inode.h changed from long to
int.  Change ext2fs to match.  We probably already assume that ints have
>= 32 bits.
1997-02-12 15:35:18 +00:00
mpp
50f9d7b978 Add function prototypes for most of the new Lite2 functions.
Also made a few of the miscfs routines static to be
consistent.  Some modules simply required some additional
#includes to remove -Wall warnings.
1997-02-12 06:52:51 +00:00
dyson
10f666af84 This is the kernel Lite/2 commit. There are some requisite userland
changes, so don't expect to be able to run the kernel as-is (very well)
without the appropriate Lite/2 userland changes.

The system boots and can mount UFS filesystems.

Untested: ext2fs, msdosfs, NFS
Known problems: Incorrect Berkeley ID strings in some files.
		Mount_std mounts will not work until the getfsent
		library routine is changed.

Reviewed by:	various people
Submitted by:	Jeffery Hsu <hsu@freebsd.org>
1997-02-10 02:22:35 +00:00
jkh
808a36ef65 Make the long-awaited change from $Id$ to $FreeBSD$
This will make a number of things easier in the future, as well as (finally!)
avoiding the Id-smashing problem which has plagued developers for so long.

Boy, I'm glad we're not using sup anymore.  This update would have been
insane otherwise.
1997-01-14 07:20:47 +00:00
dyson
baa03b956c This commit is the embodiment of some VFS read clustering improvements.
Firstly, now our read-ahead clustering is on a file descriptor basis and not
on a per-vnode basis.  This will allow multiple processes reading the
same file to take advantage of read-ahead clustering.  Secondly, there
previously was a problem with large reads still using the ramp-up
algorithm.  Of course, that was bogus, and now we read the entire
"chunk" off of the disk in one operation.   The read-ahead clustering
algorithm should use less CPU than the previous also (I hope :-)).
1996-12-29 02:44:37 +00:00
bde
45a0793694 Fixed lookup of ".." in checkpath. It always failed, so renames of
directories to a different parent directory always failed.  This bug
was caused by 4.4Lite2 changing the directory format and ext2fs not
keeping up.

Should be in 2.2.
1996-11-09 10:25:04 +00:00
bde
7cae5544c3 Fixed spacefree calculation in ext2_direnter(). This bug sometimes caused
panics.

This should be in 2.2, of course.

Submitted by:	davidg
Obtained from:	bouyer@antioche.ibp.fr (Manuel BOUYER) (fix for NetBSD)
1996-11-08 19:06:34 +00:00
bde
5580ec0a03 Removed gratuitous differences between ext2_readwrite.c and ufs_readwrite.c.
This fixes several bugs and one missing feature:
- cluster_read() was needlessly used for reading files of size exactly 1
  block.
- EFAULT errors for read didn't terminate the loop.  This was probably
  harmless.
- IO_VMIO handling was missing near line 275.  I don't know what this does.
- B_CLUSTEROK was only set if (doclusterwrite) nead line 293.  This was
  harmless, if only because another bug prevents doclusterwrite from being
  0.
- MNT_NOATIME wasn't implemented.

This should be in 2.2, of course.

Reviewed by:	davidg
1996-11-08 18:50:09 +00:00
nate
94c51e38c1 Whoops, I should've used the LINT config file. More ts -> tv changes
for timespec structure.
1996-09-20 05:51:12 +00:00
nate
45c85d421d In sys/time.h, struct timespec is defined as:
/*
         * Structure defined by POSIX.4 to be like a timeval.
         */
        struct timespec {
                time_t  ts_sec;         /* seconds */
                long    ts_nsec;        /* and nanoseconds */
        };

        The correct names of the fields are tv_sec and tv_nsec.

Reminded by:	James Drobina <jdrobina@infinet.com>
1996-09-19 18:21:32 +00:00
bde
25556c3b93 Updated #includes to 4.4Lite style. 1996-09-10 08:32:01 +00:00
gpalmer
57c3ebc617 Clean up -Wunused warnings.
Reviewed by:		bde
1996-06-12 05:11:41 +00:00
bde
82c1afdaa1 Removed bogus _BEGIN_DECLS/_END_DECLS.
Removed unused struct tag declarations in cloned code.

Added or cleaned up idempotency ifdefs.
1996-05-01 02:16:17 +00:00
bde
5183c3b725 Removed vestigial support for the obsolete FIFO option. In ext2fs
it caused null pointer panics for all fifo operations unless FIFO
was defined.
1996-02-25 20:12:36 +00:00
mpp
f3dd75a38d Fix a bunch of spelling errors in the comment fields of
a bunch of system include files.
1996-01-30 23:02:38 +00:00
dyson
8fc8a772af Eliminated many redundant vm_map_lookup operations for vm_mmap.
Speed up for vfs_bio -- addition of a routine bqrelse to greatly diminish
	overhead for merged cache.
Efficiency improvement for vfs_cluster.  It used to do alot of redundant
	calls to cluster_rbuild.
Correct the ordering for vrele of .text and release of credentials.
Use the selective tlb update for 486/586/P6.
Numerous fixes to the size of objects allocated for files.  Additionally,
	fixes in the various pagers.
Fixes for proper positioning of vnode_pager_setsize in msdosfs and ext2fs.
Fixes in the swap pager for exhausted resources.  The pageout code
	will not as readily thrash.
Change the page queue flags (PG_ACTIVE, PG_INACTIVE, PG_FREE, PG_CACHE) into
	page queue indices (PQ_ACTIVE, PQ_INACTIVE, PQ_FREE, PQ_CACHE),
	thereby improving efficiency of several routines.
Eliminate even more unnecessary vm_page_protect operations.
Significantly speed up process forks.
Make vm_object_page_clean more efficient, thereby eliminating the pause
	that happens every 30seconds.
Make sequential clustered writes B_ASYNC instead of B_DELWRI even in the
	case of filesystems mounted async.
Fix a panic with busy pages when write clustering is done for non-VMIO
	buffers.
1996-01-19 04:00:31 +00:00
wollman
26b6c4cd73 Convert QUOTA to new-style option. 1996-01-05 18:31:58 +00:00
phk
2a5a36a028 Staticize. 1995-12-17 21:14:36 +00:00
bde
3e882cae21 Restored variables that are used iff QUOTA is defined.
ext2fs still uses #if in many cases where the rest of the kernel uses
#ifdef (for QUOTA...).
1995-12-10 21:38:45 +00:00
bde
31bbf49f89 Restored used includes of <vm/vm_extern.h>. 1995-12-10 14:52:10 +00:00
dyson
8a10737211 Correct some serious porting errors. The worst one was that the
vnode was being placed upon the mount point twice!!!
1995-11-19 20:24:15 +00:00
phk
df7c5ad2a5 Get rid of the last debug sysctl variables of the old style. 1995-11-14 09:40:06 +00:00
bde
aded75dcc7 ext2_inode_cnv.c:
Included <sys/vnode.h> and its prerequisite <sys/proc.h>, and cleaned
up includes.  The vop_t changes made the non-inclusion of vnode.h
fatal instead of just sloppy.

i386_bitops.h:
Changed `extern inline' to `static inline'.  `extern inline' is a
Linuxism that stops things from compiling without -O.  Fixed
idempotency identifier.

Misc:
Added prototypes.  Staticized some functions so that prototypes are
unnecessary.  Added casts.  Cleaned up includes.
1995-11-09 08:41:25 +00:00
bde
449a11eb88 Introduced a type `vop_t' for vnode operation functions and used
it 1138 times (:-() in casts and a few more times in declarations.
This change is null for the i386.

The type has to be `typedef int vop_t(void *)' and not `typedef
int vop_t()' because `gcc -Wstrict-prototypes' warns about the
latter.  Since vnode op functions are called with args of different
(struct pointer) types, neither of these function types is any use
for type checking of the arg, so it would be preferable not to use
the complete function type, especially since using the complete
type requires adding 1138 casts to avoid compiler warnings and
another 40+ casts to reverse the function pointer conversions before
calling the functions.
1995-11-09 08:17:23 +00:00
dyson
12d1627c81 Cleaned up some lint and some obvious prototyping errors. 1995-11-08 04:50:00 +00:00
dyson
7d20c15d2f Omitted a '#if FIFO' in ext2_vnops.c
Submitted by:	Justin Gibbs
1995-11-06 04:05:01 +00:00
dyson
aa3705d78b Changes to existing files for ext2fs support. The UFS mods need rework
in the future as they are a bit crufty -- but at least the stuff is in the
tree now.
1995-11-05 23:36:07 +00:00
dyson
65a271ba6d Main code for the ext2fs filesystem. Please refer to the COPYRIGHT.INFO
file for GPL restrictions.  This code was ported to the BSD platform
by Godmar Back <gback@facility.cs.utah.edu> and specifically to FreeBSD
by John Dyson.  This code is still green and should be used with caution.
Additional changes to UFS necessary to make this code work will be commited
seperately.
Submitted by:	Godmar Back <gback@facility.cs.utah.edu>
Obtained from:	Lites/Mach4
1995-11-05 23:25:12 +00:00
dyson
b345e18c93 Fix ufs_bmap so that triple indirect blocks might work.
Submitted by:	Godmar Back <gback@facility.cs.utah.edu>
1995-11-05 23:07:37 +00:00
dyson
251a16a6af Added VOP_GETPAGES/VOP_PUTPAGES and also the "backwards" block count
for VOP_BMAP.  Updated affected filesystems...
1995-09-04 00:21:16 +00:00
rgrimes
c86f0c7a71 Remove trailing whitespace. 1995-05-30 08:16:23 +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
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
e4e3f30221 Removed obsolete vtrace() remnants. 1995-03-04 03:24:45 +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
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
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
paul
ef6f4b86ab Made idempotent
Reviewed by:
Submitted by:
1994-08-21 07:19:45 +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
27464aaa8e BSD 4.4 Lite Kernel Sources 1994-05-24 10:09:53 +00:00