Merge from vmc-playground branch:

Replace the sub-optimal uma_zone_set_obj() primitive with more modern
uma_zone_reserve_kva().  The new primitive reserves before hand
the necessary KVA space to cater the zone allocations and allocates pages
with ALLOC_NOOBJ.  More specifically:
- uma_zone_reserve_kva() does not need an object to cater the backend
  allocator.
- uma_zone_reserve_kva() can cater M_WAITOK requests, in order to
  serve zones which need to do uma_prealloc() too.
- When possible, uma_zone_reserve_kva() uses directly the direct-mapping
  by uma_small_alloc() rather than relying on the KVA / offset
  combination.

The removal of the object attribute allows 2 further changes:
1) _vm_object_allocate() becomes static within vm_object.c
2) VM_OBJECT_LOCK_INIT() is removed.  This function is replaced by
   direct calls to mtx_init() as there is no need to export it anymore
   and the calls aren't either homogeneous anymore: there are now small
   differences between arguments passed to mtx_init().

Sponsored by:	EMC / Isilon storage division
Reviewed by:	alc (which also offered almost all the comments)
Tested by:	pho, jhb, davide

1 files changed, 4 insertions, 4 deletions

diff --git a/sys/vm/vm_object.c b/sys/vm/vm_object.c
index 810707e..28d6d0c 100644
--- a/sys/vm/vm_object.c
+++ b/sys/vm/vm_object.c
@@ -194,7 +194,7 @@ vm_object_zinit(void *mem, int size, int flags)
 
 	object = (vm_object_t)mem;
 	bzero(&object->mtx, sizeof(object->mtx));
-	VM_OBJECT_LOCK_INIT(object, "standard object");
+	mtx_init(&object->mtx, "vm object", NULL, MTX_DEF | MTX_DUPOK);
 
 	/* These are true for any object that has been freed */
 	object->paging_in_progress = 0;
@@ -203,7 +203,7 @@ vm_object_zinit(void *mem, int size, int flags)
 	return (0);
 }
 
-void
+static void
 _vm_object_allocate(objtype_t type, vm_pindex_t size, vm_object_t object)
 {
 
@@ -266,7 +266,7 @@ vm_object_init(void)
 	TAILQ_INIT(&vm_object_list);
 	mtx_init(&vm_object_list_mtx, "vm object_list", NULL, MTX_DEF);
 	
-	VM_OBJECT_LOCK_INIT(kernel_object, "kernel object");
+	mtx_init(&kernel_object->mtx, "vm object", "kernel object", MTX_DEF);
 	_vm_object_allocate(OBJT_PHYS, OFF_TO_IDX(VM_MAX_KERNEL_ADDRESS - VM_MIN_KERNEL_ADDRESS),
 	    kernel_object);
 #if VM_NRESERVLEVEL > 0
@@ -274,7 +274,7 @@ vm_object_init(void)
 	kernel_object->pg_color = (u_short)atop(VM_MIN_KERNEL_ADDRESS);
 #endif
 
-	VM_OBJECT_LOCK_INIT(kmem_object, "kmem object");
+	mtx_init(&kmem_object->mtx, "vm object", "kmem object", MTX_DEF);
 	_vm_object_allocate(OBJT_PHYS, OFF_TO_IDX(VM_MAX_KERNEL_ADDRESS - VM_MIN_KERNEL_ADDRESS),
 	    kmem_object);
 #if VM_NRESERVLEVEL > 0