diff --git a/sys/amd64/amd64/pmap.c b/sys/amd64/amd64/pmap.c
index c6c62ae8636..f2d8967f6fb 100644
--- a/sys/amd64/amd64/pmap.c
+++ b/sys/amd64/amd64/pmap.c
@@ -3492,9 +3492,8 @@ pmap_enter(pmap_t pmap, vm_offset_t va, vm_prot_t access, vm_page_t m,
 	KASSERT((m->oflags & VPO_UNMANAGED) != 0 || va < kmi.clean_sva ||
 	    va >= kmi.clean_eva,
 	    ("pmap_enter: managed mapping within the clean submap"));
-	KASSERT((m->oflags & (VPO_UNMANAGED | VPO_BUSY)) != 0 ||
-	    VM_OBJECT_LOCKED(m->object),
-	    ("pmap_enter: page %p is not busy", m));
+	if ((m->oflags & (VPO_UNMANAGED | VPO_BUSY)) == 0)
+		VM_OBJECT_LOCK_ASSERT(m->object, MA_OWNED);
 	pa = VM_PAGE_TO_PHYS(m);
 	newpte = (pt_entry_t)(pa | PG_A | PG_V);
 	if ((access & VM_PROT_WRITE) != 0)
diff --git a/sys/i386/i386/pmap.c b/sys/i386/i386/pmap.c
index 5fee565962c..3c47a456785 100644
--- a/sys/i386/i386/pmap.c
+++ b/sys/i386/i386/pmap.c
@@ -3456,9 +3456,8 @@ pmap_enter(pmap_t pmap, vm_offset_t va, vm_prot_t access, vm_page_t m,
 	KASSERT(va < UPT_MIN_ADDRESS || va >= UPT_MAX_ADDRESS,
 	    ("pmap_enter: invalid to pmap_enter page table pages (va: 0x%x)",
 	    va));
-	KASSERT((m->oflags & (VPO_UNMANAGED | VPO_BUSY)) != 0 ||
-	    VM_OBJECT_LOCKED(m->object),
-	    ("pmap_enter: page %p is not busy", m));
+	if ((m->oflags & (VPO_UNMANAGED | VPO_BUSY)) == 0)
+		VM_OBJECT_LOCK_ASSERT(m->object, MA_OWNED);
 
 	mpte = NULL;
 
diff --git a/sys/i386/xen/pmap.c b/sys/i386/xen/pmap.c
index a8f11a46d13..4989e07e7ef 100644
--- a/sys/i386/xen/pmap.c
+++ b/sys/i386/xen/pmap.c
@@ -2666,9 +2666,8 @@ pmap_enter(pmap_t pmap, vm_offset_t va, vm_prot_t access, vm_page_t m,
 	KASSERT(va < UPT_MIN_ADDRESS || va >= UPT_MAX_ADDRESS,
 	    ("pmap_enter: invalid to pmap_enter page table pages (va: 0x%x)",
 	    va));
-	KASSERT((m->oflags & (VPO_UNMANAGED | VPO_BUSY)) != 0 ||
-	    VM_OBJECT_LOCKED(m->object),
-	    ("pmap_enter: page %p is not busy", m));
+	if ((m->oflags & (VPO_UNMANAGED | VPO_BUSY)) == 0)
+		VM_OBJECT_LOCK_ASSERT(m->object, MA_OWNED);
 
 	mpte = NULL;
 
diff --git a/sys/powerpc/aim/mmu_oea.c b/sys/powerpc/aim/mmu_oea.c
index 24350c44f95..e0af4e5fa9b 100644
--- a/sys/powerpc/aim/mmu_oea.c
+++ b/sys/powerpc/aim/mmu_oea.c
@@ -1121,9 +1121,8 @@ moea_enter_locked(pmap_t pmap, vm_offset_t va, vm_page_t m, vm_prot_t prot,
 	if (pmap_bootstrapped)
 		rw_assert(&pvh_global_lock, RA_WLOCKED);
 	PMAP_LOCK_ASSERT(pmap, MA_OWNED);
-	KASSERT((m->oflags & (VPO_UNMANAGED | VPO_BUSY)) != 0 ||
-	    VM_OBJECT_LOCKED(m->object),
-	    ("moea_enter_locked: page %p is not busy", m));
+	if ((m->oflags & (VPO_UNMANAGED | VPO_BUSY)) == 0)
+		VM_OBJECT_LOCK_ASSERT(m->object, MA_OWNED);
 
 	/* XXX change the pvo head for fake pages */
 	if ((m->oflags & VPO_UNMANAGED) != 0) {
diff --git a/sys/powerpc/aim/mmu_oea64.c b/sys/powerpc/aim/mmu_oea64.c
index 0d77b576cff..296b5462b9e 100644
--- a/sys/powerpc/aim/mmu_oea64.c
+++ b/sys/powerpc/aim/mmu_oea64.c
@@ -1183,9 +1183,8 @@ moea64_enter(mmu_t mmu, pmap_t pmap, vm_offset_t va, vm_page_t m,
 		pvo_flags = PVO_MANAGED;
 	}
 
-	KASSERT((m->oflags & (VPO_UNMANAGED | VPO_BUSY)) != 0 ||
-	    VM_OBJECT_LOCKED(m->object),
-	    ("moea64_enter: page %p is not busy", m));
+	if ((m->oflags & (VPO_UNMANAGED | VPO_BUSY)) == 0)
+		VM_OBJECT_LOCK_ASSERT(m->object, MA_OWNED);
 
 	/* XXX change the pvo head for fake pages */
 	if ((m->oflags & VPO_UNMANAGED) != 0) {
diff --git a/sys/powerpc/booke/pmap.c b/sys/powerpc/booke/pmap.c
index 5172009360f..8e0b76fc312 100644
--- a/sys/powerpc/booke/pmap.c
+++ b/sys/powerpc/booke/pmap.c
@@ -1560,9 +1560,8 @@ mmu_booke_enter_locked(mmu_t mmu, pmap_t pmap, vm_offset_t va, vm_page_t m,
 		KASSERT((va <= VM_MAXUSER_ADDRESS),
 		    ("mmu_booke_enter_locked: user pmap, non user va"));
 	}
-	KASSERT((m->oflags & (VPO_UNMANAGED | VPO_BUSY)) != 0 ||
-	    VM_OBJECT_LOCKED(m->object),
-	    ("mmu_booke_enter_locked: page %p is not busy", m));
+	if ((m->oflags & (VPO_UNMANAGED | VPO_BUSY)) == 0)
+		VM_OBJECT_LOCK_ASSERT(m->object, MA_OWNED);
 
 	PMAP_LOCK_ASSERT(pmap, MA_OWNED);
 
diff --git a/sys/sparc64/sparc64/pmap.c b/sys/sparc64/sparc64/pmap.c
index 08f008c8916..f689b179c92 100644
--- a/sys/sparc64/sparc64/pmap.c
+++ b/sys/sparc64/sparc64/pmap.c
@@ -1494,9 +1494,8 @@ pmap_enter_locked(pmap_t pm, vm_offset_t va, vm_page_t m, vm_prot_t prot,
 
 	rw_assert(&tte_list_global_lock, RA_WLOCKED);
 	PMAP_LOCK_ASSERT(pm, MA_OWNED);
-	KASSERT((m->oflags & (VPO_UNMANAGED | VPO_BUSY)) != 0 ||
-	    VM_OBJECT_LOCKED(m->object),
-	    ("pmap_enter_locked: page %p is not busy", m));
+	if ((m->oflags & (VPO_UNMANAGED | VPO_BUSY)) == 0)
+		VM_OBJECT_LOCK_ASSERT(m->object, MA_OWNED);
 	PMAP_STATS_INC(pmap_nenter);
 	pa = VM_PAGE_TO_PHYS(m);
 
diff --git a/sys/vm/vm_object.h b/sys/vm/vm_object.h
index e085929cd41..76caa75166e 100644
--- a/sys/vm/vm_object.h
+++ b/sys/vm/vm_object.h
@@ -206,7 +206,6 @@ extern struct vm_object kmem_object_store;
 #define	VM_OBJECT_LOCK(object)		mtx_lock(&(object)->mtx)
 #define	VM_OBJECT_LOCK_ASSERT(object, type) \
 					mtx_assert(&(object)->mtx, (type))
-#define	VM_OBJECT_LOCKED(object)	mtx_owned(&(object)->mtx)
 #define	VM_OBJECT_SLEEP(object, wchan, pri, wmesg, timo) \
 					msleep((wchan), &(object)->mtx, (pri), \
 					    (wmesg), (timo))