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1487 Commits

Author SHA1 Message Date
Warner Losh
a163d034fa Back out M_* changes, per decision of the TRB. 
Approved by: trb
 2003-02-19 05:47:46 +00:00
Alan Cox
6420521aa5 Remove GIANT_REQUIRED from vm_pageq_remove(). 2003-02-16 06:36:48 +00:00
Alan Cox
814f5c92d7 Remove the acquisition and release of Giant around pmap_growkernel(). 
It's unnecessary for two reasons: (1) Giant is at present already held in
such cases and (2) our various implementations of pmap_growkernel() look to
be MP safe.  (For example, for sparc64 the proof of (2) is trivial.)
 2003-02-15 20:01:09 +00:00
Alan Cox
53b1963649 Move kernel_vm_end's declaration to pmap.h; add a comment regarding the 
synchronization of access to kernel_vm_end.
 2003-02-15 19:38:23 +00:00
Alan Cox
6b4b77ad34 Add a comment describing how pagedaemon_wakeup() should be used and 
synchronized.

Suggested by:	tegge
 2003-02-09 20:40:36 +00:00
Poul-Henning Kamp
886eaaacfa Change a printf to also tell how many items were left in the zone. 2003-02-04 08:23:18 +00:00
Alan Cox
a1c0a78518 - It's more accurate to say that vm_paging_needed() returns TRUE 
than a positive number.
 - In pagedaemon_wakeup(), set vm_pages_needed to 1 rather than
   incrementing it to accomplish the same.
 2003-02-02 07:16:40 +00:00
Alan Cox
8e1d8de578 - Convert vm_pageout()'s tsleep()s to msleep()s with the page queue lock. 2003-02-02 01:11:21 +00:00
Alan Cox
8b24576748 - Remove (some) unnecessary explicit initializations to zero. 
- Style changes to vm_pageout(): declarations and white-space.
 2003-02-01 21:55:30 +00:00
Alan Cox
e6f2748cbc - Convert the tsleep()s in vm_wait() and vm_waitpfault() to msleep()s 
with the page queue lock.
 - Assert that the page queue lock is held in vm_page_free_wakeup().
 2003-02-01 21:18:16 +00:00
Alan Cox
75741c0497 Simplify vm_object_page_remove(): The object's memq is now ordered. The 
two cases that existed before for performance optimization purposes can
be reduced to one.
 2003-01-27 01:12:35 +00:00
Alan Cox
d923c5986e Add MTX_DUPOK to the initialization of system map locks. 2003-01-25 18:45:55 +00:00
Alfred Perlstein
c3dfdfd132 use 'void *' instead of 'caddr_t' for useracc, kernacc, vslock and vsunlock. 2003-01-21 11:34:57 +00:00
Alfred Perlstein
44956c9863 Remove M_TRYWAIT/M_WAITOK/M_WAIT. Callers should use 0. 
Merge M_NOWAIT/M_DONTWAIT into a single flag M_NOWAIT.
 2003-01-21 08:56:16 +00:00
Matthew Dillon
8575a17e02 Fix swapping to a file, it was broken when SPECSTRATEGY was introduced. 2003-01-20 20:00:32 +00:00
Matthew Dillon
2d5c7e4506 Close the remaining user address mapping races for physical 
I/O, CAM, and AIO.  Still TODO: streamline useracc() checks.

Reviewed by:	alc, tegge
MFC after:	7 days
 2003-01-20 17:46:48 +00:00
Alan Cox
28ec30cd9f - Hold the page queues lock around vm_page_hold(). 
- Assert that the page queues lock rather than Giant is held in
   vm_page_hold().
 2003-01-20 09:24:03 +00:00
Jeff Roberson
ebc85edf5e - M_WAITOK is 0 and not a real flag. Test for this properly. 
Submitted by:	tmm
Pointy hat to:	jeff
 2003-01-20 01:32:56 +00:00
David E. O'Brien
c4aa0a2e38 Rev 1.16 renamed VM_METER to VM_TOTAL. This is breaking 3rd-party apps. 
So add a VM_METER compat define.

Submitted by:	Andy Fawcett <andy@athame.co.uk>
 2003-01-18 21:14:02 +00:00
Matthew Dillon
e3669cee72 Merge all the various copies of vm_fault_quick() into a single 
portable copy.
 2003-01-16 00:02:21 +00:00
Alan Cox
b0ef8c5fe4 - Update vm_pageout_deficit using atomic operations. It's a simple 
counter outside the scope of existing locks.
 - Eliminate a redundant clearing of vm_pageout_deficit.
 2003-01-14 06:57:03 +00:00
Alan Cox
ff2023a5df Make vm_pageout_page_free() static. 2003-01-14 02:28:39 +00:00
Matthew Dillon
3db161e079 It is possible for an active aio to prevent shared memory from being 
dereferenced when a process exits due to the vmspace ref-count being
bumped.  Change shmexit() and shmexit_myhook() to take a vmspace instead
of a process and call it in vmspace_dofree().  This way if it is missed
in exit1()'s early-resource-free it will still be caught when the zombie is
reaped.

Also fix a potential race in shmexit_myhook() by NULLing out
vmspace->vm_shm prior to calling shm_delete_mapping() and free().

MFC after:	7 days
 2003-01-13 23:04:32 +00:00
Poul-Henning Kamp
ca94e7c4ca We can get past here on a normal vnode as well, so use VOP_STRATEGY if so. 2003-01-13 21:32:16 +00:00
Matthew Dillon
48e3128b34 Bow to the whining masses and change a union back into void *. Retain 
removal of unnecessary casts and throw in some minor cleanups to see if
anyone complains, just for the hell of it.
 2003-01-13 00:33:17 +00:00
Alan Cox
a15700fe32 Make vm_page_alloc() return PG_ZERO only if VM_ALLOC_ZERO is specified. 
The objective being to eliminate some cases of page queues locking.
(See, for example, vm/vm_fault.c revision 1.160.)

Reviewed by:	tegge

(Also, pointed out by tegge that I changed vm_fault.c before changing
vm_page.c.  Oops.)
 2003-01-12 23:32:46 +00:00
Alan Cox
1761f1829d vm_fault_copy_entry() needn't clear PG_ZERO because it didn't pass 
VM_ALLOC_ZERO to vm_page_alloc().
 2003-01-12 07:33:16 +00:00
Matthew Dillon
cd72f2180b Change struct file f_data to un_data, a union of the correct struct 
pointer types, and remove a huge number of casts from code using it.

Change struct xfile xf_data to xun_data (ABI is still compatible).

If we need to add a #define for f_data and xf_data we can, but I don't
think it will be necessary.  There are no operational changes in this
commit.
 2003-01-12 01:37:13 +00:00
Alan Cox
b5dc830507 In vm_page_alloc(), fuse two if statements that are conditioned on the same 
expression.
 2003-01-11 20:07:17 +00:00
Matthew Dillon
f7550ecf3f Make 'sysctl vm.vmtotal' work properly using updated patch from Hiten. 
(the patch in the PR was stale).

PR:             kern/5689
Submitted by:   Hiten Pandya <hiten@unixdaemons.com>
 2003-01-11 07:29:47 +00:00
Alan Cox
9a032278bd In vm_page_alloc(), honor VM_ALLOC_ZERO for system and interrupt class 
requests when the number of free pages is below the reserved threshold.
Previously, VM_ALLOC_ZERO was only honored when the number of free pages
was above the reserved threshold.  Honoring it in all cases generally
makes sense, does no harm, and simplifies the code.
 2003-01-08 19:58:42 +00:00
Poul-Henning Kamp
5266a767e5 Convert VOP_STRATEGY to VOP_SPECSTRATEGY in the generic getpages and 
the pager input for small filesystems.
 2003-01-05 20:32:03 +00:00
Alan Cox
6c4952c7b4 Use atomic add and subtract to update the global wired page count, 
cnt.v_wire_count.
 2003-01-05 01:31:45 +00:00
Poul-Henning Kamp
f5b11b6e2d Temporarily introduce a new VOP_SPECSTRATEGY operation while I try 
to sort out disk-io from file-io in the vm/buffer/filesystem space.

The intent is to sort VOP_STRATEGY calls into those which operate
on "real" vnodes and those which operate on VCHR vnodes.  For
the latter kind, the call will be changed to VOP_SPECSTRATEGY,
possibly conditionally for those places where dual-use happens.

Add a default VOP_SPECSTRATEGY method which will call the normal
VOP_STRATEGY.  First time it is called it will print debugging
information.  This will only happen if a normal vnode is passed
to VOP_SPECSTRATEGY by mistake.

Add a real VOP_SPECSTRATEGY in specfs, which does what VOP_STRATEGY
does on a VCHR vnode today.

Add a new VOP_STRATEGY method in specfs to catch instances where
the conversion to VOP_SPECSTRATEGY has not yet happened.  Handle
the request just like we always did, but first time called print
debugging information.

Apart up to two instances of console messages per boot, this amounts
to a glorified no-op commit.

If you get any of the messages on your console I would very much
like a copy of them mailed to phk@freebsd.org
 2003-01-04 22:10:36 +00:00
Alan Cox
469c4ba59e Allow kmem_malloc() without Giant if M_NOWAIT is specified. 2003-01-04 19:26:35 +00:00
Alan Cox
4dbeceee96 Use vm_object_lock() and vm_object_unlock() in vm_object_deallocate(). 
(This procedure needs further work, but this change is sufficient for
locking the kmem_object.)
 2003-01-04 19:23:19 +00:00
Alan Cox
009f3e7a1e Refine the assertions in vm_page_alloc(). 2003-01-04 19:07:13 +00:00
Alan Cox
5440b5a974 Refine the assertion in vm_object_clear_flag() to allow operation on the 
kmem_object without Giant.  In that case, assert that the kmem_object's
mutex is held.
 2003-01-03 19:19:08 +00:00
Poul-Henning Kamp
d6b3a1df18 Revert use of dmmax_mask, I had overlooked a '~'. 
Spotted by:	bde
 2003-01-03 19:16:48 +00:00
Poul-Henning Kamp
42c43e6031 Make struct swblock kernel only, to make vm/swap_pager.h userland includable. 
Move struct swdevt from sys/conf.h to the more appropriate vm/swap_pager.h.
Adjust #include use in libkvm and pstat(8) to match.
 2003-01-03 16:23:12 +00:00
Poul-Henning Kamp
c410df597b Avoid extern decls in .c files by putting them in the vm/swap_pager.h 
include file where they belong.
Share the dmmax_mask variable.
 2003-01-03 14:30:46 +00:00
Poul-Henning Kamp
3ccbf2d533 Use correct _VM_SWAP_PAGER_H_ to check for multiple inclusion. 2003-01-03 14:22:52 +00:00
Poul-Henning Kamp
69fd75d094 Retire sys/dmap.h by including the two lines of it which matters 
directly in vm/vm_swap.c.
 2003-01-03 09:55:05 +00:00
Alan Cox
a6864937e2 Lock the vm object when performing vm_object_clear_flag(). 2003-01-03 09:15:43 +00:00
Poul-Henning Kamp
862702306b Convert calls to BUF_STRATEGY to VOP_STRATEGY calls. This is a no-op since 
all BUF_STRATEGY did in the first place was call VOP_STRATEGY.
 2003-01-03 06:32:15 +00:00
Alan Cox
49247edca6 Add vm map and vm object locking to vmtotal(). 2003-01-03 05:52:02 +00:00
Alan Cox
81e4e48d24 Lock the vm object when performing vm_object_clear_flag(). 2003-01-02 09:09:27 +00:00
Alan Cox
d61e1287a4 Update the assertions in vm_page_insert() and vm_page_lookup() to reflect 
locking of the kmem_object.
 2003-01-01 19:45:36 +00:00
Jens Schweikhardt
9d5abbddbf Correct typos, mostly s/ a / an / where appropriate. Some whitespace cleanup, 
especially in troff files.
 2003-01-01 18:49:04 +00:00
Alan Cox
ea0081b61e Add a needed #include. 
Reported by:	ia64 tinderbox
 2003-01-01 00:13:01 +00:00