Commit Graph

99 Commits

Author SHA1 Message Date
lukem 0ffad69384 add RCSIDs 2001-11-10 10:59:08 +00:00
fvdl df8490a27a Always initialize ni_rootdir in nfs_namei. From Andrei Petrov. 2001-09-27 21:44:56 +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
lukem 7edbb27e74 delint lvalue cast abuse 2001-06-07 01:04:40 +00:00
bjh21 4442920f51 In nfs_loadattrcache(), if checkalias() gives us a new vnode, lock it. This
prevents us losing the locked state of the old vnode.

fvdl thinks the old vnode is certain to be locked at this point.  I've put in
a KASSERT to be on the safe side.

This seems to fix PR kern/12661.
2001-04-21 21:35:53 +00:00
fvdl ad5dcb280f Same change as in the UFS code: unlock vnode before setting v_op
to spec_vnode_ops. From Bill Studenmund.
2001-03-23 21:10:48 +00:00
jdolecek 522f569810 make some more constant arrays 'const' 2001-02-21 21:39:52 +00:00
fvdl 4c9b670931 Fix some possible locking errors in nfs_namei (XXX this function should die) 2001-02-14 15:36:45 +00:00
jdolecek 34c8ae80da constify 2001-01-18 20:28:15 +00:00
chs aeda8d3b77 Initial integration of the Unified Buffer Cache project. 2000-11-27 08:39:39 +00:00
ad 642267bcc7 Update for hashinit() change. 2000-11-08 14:28:12 +00:00
fvdl dcf7889500 Do not accept vnode type changes to an active node. This may wreak
havoc if the server erroneously uses the same filehandle for
different files. This changes back revision 1.28; the PR that
that revision fixed doesn't apply anymore, it has been verified
not to be a problem with this change.
2000-10-24 12:02:04 +00:00
fvdl 06b8ac615d Avoid unused variables for V2_ONLY case. 2000-09-27 18:36:03 +00:00
enami 29d3e43df9 Don't bother to clear commit information for the vnode of type VNON.
It is not necessary since it is a vnode being initialized and it shouldn't
be done since filesystem private data may not be assigned yet.
2000-09-24 06:59:21 +00:00
bjh21 1f4240a461 Extend NFS_V2_ONLY to remove NQNFS lease support as well. Saves another 10k. 2000-09-19 23:26:25 +00:00
fvdl 9ed021b771 Add functions to deal with keeping track of commit ranges. 2000-09-19 22:13:55 +00:00
bjh21 33daa8de6b New kernel option, NFS_V2_ONLY, which aims to reduce the NFS client to just
that required to support NFSv2 mounts.  Not finished yet, but already
provides some 44k of saving in code size on arm26.  More savings, and some
documentation, are still to come.
2000-09-19 17:04:50 +00:00
thorpej 7cc27a88c0 Convert namei pathname buffer allocation to use the pool allocator. 2000-08-03 20:41:05 +00:00
thorpej d07efbc8b8 MALLOC()/FREE() are not to be used for variable size allocations. 2000-08-03 06:15:02 +00:00
mrg 05e377a0bd remove include of <vm/vm.h> 2000-06-28 03:30:42 +00:00
mrg 6eeafef261 remove include of <vm/vm.h> 2000-06-27 17:52:28 +00:00
mrg 7083fdcb62 disable the bloated NFS structure check on 64bit sparc64. 2000-06-20 02:29:51 +00:00
fvdl 7cfd328d97 Some tweaks to enable NFS over IPv6. The special-casing of AF_INET
should really be removed.
2000-06-09 00:00:17 +00:00
augustss 8529438fe6 Remove register declarations. 2000-03-30 12:51:13 +00:00
simonb 11bec2d6e1 Delete redundant decl of nfs_pub - it's in <sys/mount.h>.
Delete redundant decls of nfsv{2,3}_type - they're in <nfs/nfsproto.h>.
2000-03-30 02:43:13 +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
fvdl f39cfa5c7b Stuff values in va_blocksize that are closer to reality. 1999-11-01 21:32:41 +00:00
is ee1ce1c15e Don't truncate minor numbers >= 256.
Problem reported by Saitoh Masanobu, fix by Frank van der Linden.
1999-09-06 09:27:18 +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
mrg d2397ac5f7 completely remove Mach VM support. all that is left is the all the
header files as UVM still uses (most of) these.
1999-03-24 05:50:49 +00:00
fvdl 84c33581df ..JUKEBOX can happen on writes too. 1999-03-16 23:24:28 +00:00
fvdl df3c103b26 The JUKEBOX error may be returned by the read operation, so don't
filter it out.
1999-03-16 23:22:57 +00:00
fair d143754986 Snatch a patch from OpenBSD to fix PRs 6529 and 7074.
Adjust fxdr_hyper() and txdr_hyper() macros.
1999-03-06 05:34:40 +00:00
wrstuden bc94ad4c5e Rationalize the vfs_checkexp macro to be VFS_CHECKEXP. 1999-02-27 00:47:34 +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
perry 4522c799a1 bzero->memset, bcopy->memcpy, bcmp->memcmp 1998-08-09 20:51:08 +00:00
jonathan 5c0c5dd0b4 defopt ISO TPIP. 1998-07-05 04:37:35 +00:00
thorpej 6b781d156f defopt NFSSERVER 1998-06-25 22:17:36 +00:00
sommerfe 7ba7fbbb23 Always include fifos; "not an option any more". 1998-06-24 20:58:44 +00:00
sommerfe becaafeea0 defopt for options FIFO 1998-06-22 22:00:59 +00:00
kleink fe2d01988e Fix some arithmetics lossage on typeless pointers. 1998-05-08 18:18:55 +00:00
fvdl 05acb550be Only free cookies on error when they were actually allocated by the readdir vop. 1998-03-03 13:38:32 +00:00
fvdl e5bc90f40c Merge with Lite2 + local changes 1998-03-01 02:20:01 +00:00
thorpej 2146a2ed29 Include the NFS option header. 1998-02-19 00:54:13 +00:00
mrg d90485202c - add defopt's for UVM, UVMHIST and PMAP_NEW.
- remove unnecessary UVMHIST_DECL's.
1998-02-10 14:08:44 +00:00
chs f64abc7b4c add flags arg to hashinit(), to pass to malloc(). 1998-02-07 02:44:44 +00:00
mikel a5ffacd6cf ELAST incremented, update nfsrv_v2errmap[] initialization 1998-02-06 08:22:54 +00:00
mrg 1a8c7604f4 initial import of the new virtual memory system, UVM, into -current.
UVM was written by chuck cranor <chuck@maria.wustl.edu>, with some
minor portions derived from the old Mach code.  i provided some help
getting swap and paging working, and other bug fixes/ideas.  chuck
silvers <chuq@chuq.com> also provided some other fixes.

this is the rest of the MI portion changes.

this will be KNF'd shortly.  :-)
1998-02-05 07:59:28 +00:00
fvdl dba168ad94 Refuse to create entries in the dir cache for offset 0. This is a special
case anyway, and amd(8) erroneously returns some entries with cookie 0.
Fixes PR 4844
1998-01-22 00:53:59 +00:00