Add the mlockall() and munlockall() system calls.

 - All those diffs to syscalls.master for each architecture *are*
   necessary. This needed clarification; the stub code generation for
   mlockall() was disabled, which would prevent applications from
   linking to this API (suggested by mux)
 - Giant has been quoshed. It is no longer held by the code, as
   the required locking has been pushed down within vm_map.c.
 - Callers must specify VM_MAP_WIRE_HOLESOK or VM_MAP_WIRE_NOHOLES
   to express their intention explicitly.
 - Inspected at the vmstat, top and vm pager sysctl stats level.
   Paging-in activity is occurring correctly, using a test harness.
 - The RES size for a process may appear to be greater than its SIZE.
   This is believed to be due to mappings of the same shared library
   page being wired twice. Further exploration is needed.
 - Believed to back out of allocations and locks correctly
   (tested with WITNESS, MUTEX_PROFILING, INVARIANTS and DIAGNOSTIC).

PR:             kern/43426, standards/54223
Reviewed by:    jake, alc
Approved by:    jake (mentor)
MFC after:	2 weeks

1 files changed, 4 insertions, 2 deletions

diff --git a/sys/vm/vm_glue.c b/sys/vm/vm_glue.c
index d0f6bf2..5d0744b 100644
--- a/sys/vm/vm_glue.c
+++ b/sys/vm/vm_glue.c
@@ -189,7 +189,8 @@ vslock(addr, len)
 {
 
 	vm_map_wire(&curproc->p_vmspace->vm_map, trunc_page((vm_offset_t)addr),
-	    round_page((vm_offset_t)addr + len), FALSE);
+	    round_page((vm_offset_t)addr + len),
+	    VM_MAP_WIRE_SYSTEM|VM_MAP_WIRE_NOHOLES);
 }
 
 /*
@@ -203,7 +204,8 @@ vsunlock(addr, len)
 
 	vm_map_unwire(&curproc->p_vmspace->vm_map,
 	    trunc_page((vm_offset_t)addr),
-	    round_page((vm_offset_t)addr + len), FALSE);
+	    round_page((vm_offset_t)addr + len),
+	    VM_MAP_WIRE_SYSTEM|VM_MAP_WIRE_NOHOLES);
 }
 
 /*