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freebsd-nq/sys/vm
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Alfred Perlstein 582ec34cd8 Fix a race with free'ing vmspaces at process exit when vmspaces are 
shared.

Also introduce vm_endcopy instead of using pointer tricks when
initializing new vmspaces.

The race occured because of how the reference was utilized:
  test vmspace reference,
  possibly block,
  decrement reference

When sharing a vmspace between multiple processes it was possible
for two processes exiting at the same time to test the reference
count, possibly block and neither one free because they wouldn't
see the other's update.

Submitted by: green
2002-02-05 21:23:05 +00:00
..
default_pager.c With Alfred's permission, remove vm_mtx in favor of a fine-grained approach 2001-07-04 16:20:28 +00:00
device_pager.c With Alfred's permission, remove vm_mtx in favor of a fine-grained approach 2001-07-04 16:20:28 +00:00
phys_pager.c With Alfred's permission, remove vm_mtx in favor of a fine-grained approach 2001-07-04 16:20:28 +00:00
pmap.h KSE Milestone 2 2001-09-12 08:38:13 +00:00
swap_pager.c Don't use an uninitialized field reserved for callers in the bio structure 2001-10-15 23:02:54 +00:00
swap_pager.h - If swap metadata does not fit into the KVM, reduce the number of 2000-12-13 10:01:00 +00:00
vm_contig.c contigmalloc1() could cause the vm_page_zero_count to become incorrect. 2001-10-17 17:34:34 +00:00
vm_extern.h Fix a race with free'ing vmspaces at process exit when vmspaces are 2002-02-05 21:23:05 +00:00
vm_fault.c Fix deadlock introduced in 1.73 (Jan 1998). The paging-in-progress count 2001-11-09 21:34:45 +00:00
vm_glue.c Fix a race with free'ing vmspaces at process exit when vmspaces are 2002-02-05 21:23:05 +00:00
vm_init.c Move most of the kernel submap initialization code, including the 2001-08-22 04:07:27 +00:00
vm_kern.c vm/vm_kern.c: rate limit (to once per second) diagnostic printf when 2001-12-01 00:21:30 +00:00
vm_kern.h Introduce numerous SMP friendly changes to the mbuf allocator. Namely, 2001-06-22 06:35:32 +00:00
vm_map.c Fix a race with free'ing vmspaces at process exit when vmspaces are 2002-02-05 21:23:05 +00:00
vm_map.h Fix a race with free'ing vmspaces at process exit when vmspaces are 2002-02-05 21:23:05 +00:00
vm_meter.c Move the code that computes the system load average from vm_meter.c 2001-10-20 13:10:43 +00:00
vm_mmap.c Replace ffind_* with fget calls. 2002-01-14 00:13:45 +00:00
vm_object.c Move recently added procedure which was incorrectly placed within an 2001-10-26 16:27:54 +00:00
vm_object.h Implement kern.maxvnodes. adjusting kern.maxvnodes now actually has a 2001-10-26 00:08:05 +00:00
vm_page.c This fixes a large number of bugs in our NFS client side code. A recent 2001-12-14 01:16:57 +00:00
vm_page.h Implement idle zeroing of pages. I've been tinkering with this 2001-08-25 05:00:44 +00:00
vm_pageout.c GC P_BUFEXHAUST leftovers, we've had a new mechanism to avoid buffer 2002-01-31 18:39:44 +00:00
vm_pageout.h - Remove asleep(), await(), and M_ASLEEP. 2001-08-10 06:37:05 +00:00
vm_pageq.c Reorg vm_page.c into vm_page.c, vm_pageq.c, and vm_contig.c (for contigmalloc). 2001-07-04 23:27:09 +00:00
vm_pager.c Whitespace fixes. 2001-08-04 20:49:29 +00:00
vm_pager.h With Alfred's permission, remove vm_mtx in favor of a fine-grained approach 2001-07-04 16:20:28 +00:00
vm_param.h Make MAXTSIZ, DFLDSIZ, MAXDSIZ, DFLSSIZ, MAXSSIZ, SGROWSIZ loader 2001-10-10 23:06:54 +00:00
vm_swap.c KSE Milestone 2 2001-09-12 08:38:13 +00:00
vm_unix.c KSE Milestone 2 2001-09-12 08:38:13 +00:00
vm_zeroidle.c KSE Milestone 2 2001-09-12 08:38:13 +00:00
vm_zone.c When laying out objects in a ZONE_INTERRUPT zone, allow them to cross 2001-11-17 00:40:48 +00:00
vm_zone.h Add a zdestroy() function to the zone allocator. This is needed for the 2001-08-04 20:17:05 +00:00
vm.h Remove a parameter name from a prototype. 2002-01-25 21:33:10 +00:00
vnode_pager.c This fixes a large number of bugs in our NFS client side code. A recent 2001-12-14 01:16:57 +00:00
vnode_pager.h vnode_pager_freepage() is really vm_page_free() in disguise, 2001-04-19 06:18:23 +00:00