src-test2/sys/vm/vm_map.c, branch releng/6.3

MFC revision 1.389

2007-11-02T06:33:20Z

Correct an error in vm_map_sync(), nee vm_map_clean(), that has existed since revision 1.1. Specifically, neither traversal of the vm map checks whether the end of the vm map has been reached. Consequently, the first traversal can wrap around and bogusly return an error.

MFC

2007-09-09T04:41:24Z

rev. 1.387 of src/sys/vm/vm_map.c rev. 1.120 of src/sys/vm/vm_map.h rev. 1.213 of src/sys/vm/vm_mmap.c Do not drop vm_map lock between doing vm_map_remove() and vm_map_insert(). For this, introduce vm_map_fixed() that does that for MAP_FIXED case. Tested by: Marc G. Fournier

Backport of optimized sx locks and rwlocks from FreeBSD 7.0.

2007-09-04T22:40:40Z

Reviewed by: attilio, jhb Obtained from: Juniper Networks

MFC revisions 1.375-1.377

2007-08-30T02:32:04Z

Use pmap_enter_object() in vm_map_pmap_enter() to reduce the locking overhead of premapping objects. Note: It was later discovered that this change addresses a race condition that is discussed by vm/vm_fault.c revision 1.216. Specifically, replacing pmap_enter_quick() by pmap_enter_object() addresses the race.

MFC: Close race between vmspace_exitfree() and exit1() and races between

2006-06-02T00:26:27Z

vmspace_exitfree() and vmspace_free() which could result in the same vmspace being freed twice. Factor out part of exit1() into new function vmspace_exit(). Attach to vmspace0 to allow old vmspace to be freed earlier. Add new function, vmspace_acquire_ref(), for obtaining a vmspace reference for a vmspace belonging to another process. Avoid changing vmspace refcount from 0 to 1 since that could also lead to the same vmspace being freed twice. Change vmtotal() and swapout_procs() to use vmspace_acquire_ref().

MFC

2005-11-13T21:45:49Z

Pass a value of type vm_prot_t to pmap_enter_quick() so that it determine whether the mapping should permit execute access. Revision Changes Path 1.179 +2 -2 src/sys/alpha/alpha/pmap.c 1.527 +4 -2 src/sys/amd64/amd64/pmap.c 1.37 +3 -3 src/sys/arm/arm/pmap.c 1.531 +2 -2 src/sys/i386/i386/pmap.c 1.163 +4 -3 src/sys/ia64/ia64/pmap.c 1.100 +3 -2 src/sys/powerpc/powerpc/pmap.c 1.149 +3 -2 src/sys/sparc64/sparc64/pmap.c 1.72 +1 -1 src/sys/vm/pmap.h 1.207 +2 -1 src/sys/vm/vm_fault.c 1.368 +2 -2 src/sys/vm/vm_map.c

MFC (by alc)

2005-10-09T03:07:29Z

| Eliminate an incorrect (and unnecessary) cast. | | Revision Changes Path | 1.367 +1 -1 src/sys/vm/vm_map.c Approved by: re (scottl)

Remove GIANT_REQUIRED from vmspace_exec().

2005-05-02T07:05:20Z

Prodded by: jeff

Add checks to vm_map_findspace() to test for address wrap. The conditions

2005-01-18T19:50:09Z

where this could occur are very rare, but possible. Submitted by: Mark W. Krentel MFC after: 2 weeks

/* -> /*- for license, minor formatting changes

2005-01-07T02:29:27Z