Commit Graph

106 Commits

Author SHA1 Message Date
lukem
1ac69d9cb3 add RCSIDs 2001-11-12 22:54:03 +00:00
chs
781fe69288 add glue required by new genfs_getpages(). 2001-09-30 18:47:48 +00:00
chs
3638545406 move include of header only needed for kernel down inside ifdef _KENREL. 2001-09-15 22:44:09 +00:00
chs
64c6d1d2dc a whole bunch of changes to improve performance and robustness under load:
- remove special treatment of pager_map mappings in pmaps.  this is
   required now, since I've removed the globals that expose the address range.
   pager_map now uses pmap_kenter_pa() instead of pmap_enter(), so there's
   no longer any need to special-case it.
 - eliminate struct uvm_vnode by moving its fields into struct vnode.
 - rewrite the pageout path.  the pager is now responsible for handling the
   high-level requests instead of only getting control after a bunch of work
   has already been done on its behalf.  this will allow us to UBCify LFS,
   which needs tighter control over its pages than other filesystems do.
   writing a page to disk no longer requires making it read-only, which
   allows us to write wired pages without causing all kinds of havoc.
 - use a new PG_PAGEOUT flag to indicate that a page should be freed
   on behalf of the pagedaemon when it's unlocked.  this flag is very similar
   to PG_RELEASED, but unlike PG_RELEASED, PG_PAGEOUT can be cleared if the
   pageout fails due to eg. an indirect-block buffer being locked.
   this allows us to remove the "version" field from struct vm_page,
   and together with shrinking "loan_count" from 32 bits to 16,
   struct vm_page is now 4 bytes smaller.
 - no longer use PG_RELEASED for swap-backed pages.  if the page is busy
   because it's being paged out, we can't release the swap slot to be
   reallocated until that write is complete, but unlike with vnodes we
   don't keep a count of in-progress writes so there's no good way to
   know when the write is done.  instead, when we need to free a busy
   swap-backed page, just sleep until we can get it busy ourselves.
 - implement a fast-path for extending writes which allows us to avoid
   zeroing new pages.  this substantially reduces cpu usage.
 - encapsulate the data used by the genfs code in a struct genfs_node,
   which must be the first element of the filesystem-specific vnode data
   for filesystems which use genfs_{get,put}pages().
 - eliminate many of the UVM pagerops, since they aren't needed anymore
   now that the pager "put" operation is a higher-level operation.
 - enhance the genfs code to allow NFS to use the genfs_{get,put}pages
   instead of a modified copy.
 - clean up struct vnode by removing all the fields that used to be used by
   the vfs_cluster.c code (which we don't use anymore with UBC).
 - remove kmem_object and mb_object since they were useless.
   instead of allocating pages to these objects, we now just allocate
   pages with no object.  such pages are mapped in the kernel until they
   are freed, so we can use the mapping to find the page to free it.
   this allows us to remove splvm() protection in several places.

The sum of all these changes improves write throughput on my
decstation 5000/200 to within 1% of the rate of NetBSD 1.5
and reduces the elapsed time for "make release" of a NetBSD 1.5
source tree on my 128MB pc to 10% less than a 1.5 kernel took.
2001-09-15 20:36:31 +00:00
chs
adf5d360a7 add a new VFS op, vfs_reinit, which is called when desiredvnodes is
adjusted via sysctl.  file systems that have hash tables which are
sized based on the value of this variable now resize those hash tables
using the new value.  the max number of FFS softdeps is also recalculated.

convert various file systems to use the <sys/queue.h> macros for
their hash tables.
2001-09-15 16:12:54 +00:00
mrg
c13e3a6693 use _KERNEL_OPT 2001-05-30 11:40:35 +00:00
chs
45701591c6 add a genfs_mmap() and change all of the disk-based filesystems
to implement VOP_MMAP() with the genfs version, in preparation for
actually using this VOP.
2001-05-28 02:50:51 +00:00
chs
49a0cbf7f6 in adosfs_read(), only do the UBC thang for "FFS" files (ie. those that
don't mix data and metadata in the same sector).  in adosfs_bmap(), set
the "run" return value to 0 to indicate the result is only good for 1 block.
these fix the rest of PR 12270.
2001-04-12 04:12:04 +00:00
chs
2a2f8d1727 initialize some struct mount fields that UBC needs.
DOS3 filesystems work now.
2001-04-03 05:40:27 +00:00
chs
060e70db41 min() -> MIN(), max() -> MAX().
fixes more problems with file offsets > 4GB.
2001-02-27 04:37:44 +00:00
jdolecek
d9466585b7 make filesystem vnodeop, specop, fifoop and vnodeopv_* arrays const 2001-01-22 12:17:35 +00:00
chs
aeda8d3b77 Initial integration of the Unified Buffer Cache project. 2000-11-27 08:39:39 +00:00
jdolecek
458d7b0e00 adosfs_mountfs(): check for zero amp->secsperblk before dividing by it (which
would cause trap and panic); it might be invalid if the mounted filesystem is
not actually adosfs.
This fixes kern/11335 by Petri Koistinen.
2000-11-08 08:06:24 +00:00
thorpej
a07f6460c8 MALLOC()/FREE() are not to be used for variable sized allocations. 2000-08-03 00:54:23 +00:00
nathanw
dd44125396 Remove unused variable. 2000-07-11 16:08:15 +00:00
thorpej
071aed40ac A foolish consistency; most parts of the kernel use bp->b_data, so
change these from bp->b_un.b_addr to bp->b_data, as well.  This also
allows us more flexibility to experiment with other data buffer types
hung off of struct buf.
2000-05-19 18:54:22 +00:00
jdolecek
89015c4648 Add new VFS op routine - vfs_done and call it on filesystem detach
in vfs_detach(). vfs_done may free global filesystem's resources,
typically those allocated in respective filesystem's init function.
Needed so those filesystems which went in via LKM have a chance to
clean after themselves before unloading. This fixes random panics
when LKM for filesystem using pools was loaded and unloaded several
times.

For each leaf filesystem, add appropriate vfs_done routine.
2000-03-16 18:08:17 +00:00
tron
0ba519abd7 Fix typo in softdep code. 1999-11-15 20:55:48 +00:00
fvdl
0b1963121a Add Kirk McKusick's soft updates code to the trunk. Not enabled by
default, as the copyright on the main file (ffs_softdep.c) is such
that is has been put into gnusrc. options SOFTDEP will pull this
in. This code also contains the trickle syncer.

Bump version number to 1.4O
1999-11-15 18:49:07 +00:00
enami
fee96e1746 Check if the type of device node isn't VBAD before touching v_specinfo. If
the device vnode is revoked, the field is NULL and touching it causes null
pointer derefercence.
1999-10-20 14:32:09 +00:00
wrstuden
e5bf8dc4d5 Catch a few cases missed earlier where we need to lock the vnode before
calling VOP_CLOSE().
1999-10-18 19:52:24 +00:00
wrstuden
e682a080e9 In spec_close(), if we're not doing a non-blocking close and VXLOCK is
not set, unlock the vnode before calling the device's close routine and
relock it after it returns. tty close routines will sleep waiting for
buffers to drain, which won't happen often times as the other side needs
to grab the vnode lock first.

Make all unmount routines lock the device vnode before calling VOP_CLOSE().
1999-10-16 23:53:26 +00:00
frueauf
8add3d9e07 avoid compiler warning and remove unused variable vpid. 1999-09-20 07:29:27 +00:00
jdolecek
7dfaa17700 Adapt to cache_lookup() changes.
Tested by: jdolecek
Rewieved by: wrstuden
1999-09-05 14:26:32 +00:00
itohy
5de5ad21a2 Revoke revoke(2) bug. 1999-08-19 03:42:23 +00:00
wrstuden
3bf14d81e9 Add support for fcntl(2) to generate VOP_FCNTL calls. Any fcntl
call with F_FSCTL set and F_SETFL calls generate calls to a new
fileop fo_fcntl. Add genfs_fcntl() and soo_fcntl() which return 0
for F_SETFL and EOPNOTSUPP otherwise. Have all leaf filesystems
use genfs_fcntl().

Reviewed by: thorpej
Tested by: wrstuden
1999-08-03 20:19:16 +00:00
wrstuden
379a26972f Modify file systems to deal with struct lock in struct vnode. All leaf
fs's other than nfs use genfs_lock() for locking.

Modify lookup routines to set PDIRUNLOCK when they unlock the parrent.
1999-07-08 01:05:58 +00:00
is
1790023ce8 Support ADOS file systems with more then 512 bytes/sector.
Fixes contributed by Detlef Würkner in PR 7653.
1999-06-02 22:04:30 +00:00
kleink
b570b54662 Use BYTE_ORDER do determine the endianness, rather than an (incomplete) check
for the machine architecture.
1999-05-29 17:14:27 +00:00
kleink
9ee75a4fcc Add _PC_FILESIZEBITS to pathconf vnop. 1999-03-22 19:21:07 +00:00
wrstuden
862a56e88b Modify vfsops to seperate vfs_fhtovp() into two routines. vfs_fhtovp() now
only handles the file handle to vnode conversion, and a new call,
vfs_checkexp(), performs the export verification.
1999-02-26 23:44:43 +00:00
bouyer
8be15977ce Correct both in my previous commit (#ifdef around by Matthew Jacob). 1999-02-11 09:49:46 +00:00
mjacob
99fb54992d ifdef around merge botch 1999-02-10 21:56:23 +00:00
bouyer
22d556f6cf Make sure a buffer optained from bread() is always bresle()'d in case of
error. Closes PR kern/1448 from Wolfgang Solfrank.
1999-02-10 13:14:08 +00:00
thorpej
d0bcffb9a3 Use the pool allocator and the "nointr" pool page allocator for adosfs nodes. 1998-09-01 03:33:26 +00:00
kleink
1bbb6339c8 In readlink, don't copy the string's NUL-terminator, and remove a redundant
check.
1998-08-19 13:12:40 +00:00
kleink
5350df2953 Per POSIX, fail with EINVAL if advisory locking is attempted on a file type
that doesn't support it, rather than using a homegrown EBADF or EOPNOTSUPP.
1998-08-13 10:06:31 +00:00
matthias
574106c52b create miscfs/genfs/genfs_vnops.c:genfs_enoioctl and make all the other
filesystems use it instead of a private version.
1998-08-10 08:11:10 +00:00
perry
27ca6798df bzero->memset, bcopy->memcpy, bcmp->memcmp 1998-08-09 20:15:38 +00:00
kleink
e9ef31ed72 msdosfs -> adosfs 1998-08-09 17:54:50 +00:00
kleink
12a866151b Recognize _PC_SYNC_IO. 1998-08-03 14:19:57 +00:00
mhitch
7fee5ec13e Fix a typo in a panic message. 1998-07-10 20:14:59 +00:00
jonathan
d275e56dee * defopt COMPAT_{09,10,11,12,13} and COMPAT_NOMID.
TODO: revisit interaction between native compat and emul compat usage.
1998-07-05 08:49:30 +00:00
thorpej
0f66e53c03 Use genfs_lease_check() 1998-06-25 22:20:39 +00:00
cgd
651b44e211 Rework the way kernel include files are installed. In the new method,
as with user-land programs, include files are installed by each directory
in the tree that has includes to install.  (This allows more flexibility
as to what gets installed, makes 'partial installs' easier, and gives us
more options as to which machines' includes get installed at any given
time.)  The old SYS_INCLUDES={symlinks,copies} behaviours are _both_
still supported, though at least one bug in the 'symlinks' case is
fixed by this change.  Include files can't be build before installation,
so directories that have includes as targets (e.g. dev/pci) have to move
those targets into a different Makefile.
1998-06-12 23:22:30 +00:00
scottr
7171cca4b8 Protect various config(8)-generated files from inclusion while
building LKMs.  Fixes PR 5557.
1998-06-09 07:46:31 +00:00
scottr
d48f258f90 Use the newly-defined opt_quota.h. 1998-06-08 04:27:50 +00:00
fvdl
e5bc90f40c Merge with Lite2 + local changes 1998-03-01 02:20:01 +00:00
thorpej
b5bf2ed6d0 Place a pointer to an array of our vnodeopv_desc *'s in our vfsops
structure, for use by vfs_attach().
1998-02-18 07:05:47 +00:00
fvdl
fd5433c6bc Bump last argument to VOP_READDIR to off_t (from u_long). 1997-10-10 01:57:31 +00:00