Index: sys/fs/tmpfs/tmpfs_vnops.c
===================================================================
--- sys/fs/tmpfs/tmpfs_vnops.c	(revisione 233191)
+++ sys/fs/tmpfs/tmpfs_vnops.c	(copia locale)
@@ -653,21 +653,32 @@ tmpfs_mappedwrite(vm_object_t vobj, vm_object_t to
 		goto nocache;
 	}
 lookupvpg:
-	if (((vpg = vm_page_lookup(vobj, idx)) != NULL) &&
-	    vm_page_is_valid(vpg, offset, tlen)) {
-		if ((vpg->oflags & VPO_BUSY) != 0) {
-			/*
-			 * Reference the page before unlocking and sleeping so
-			 * that the page daemon is less likely to reclaim it.  
-			 */
-			vm_page_reference(vpg);
-			vm_page_sleep(vpg, "tmfsmw");
-			goto lookupvpg;
+	if ((vpg = vm_radix_lookup(&vobj->rtree, idx, VM_RADIX_ANY)) != NULL) {
+		if (vm_page_is_valid(vpg, offset, tlen)) {
+			if ((vpg->oflags & VPO_BUSY) != 0) {
+				/*
+				 * Reference the page before unlocking and
+				 * sleeping so that the page daemon is less
+				 * likely to reclaim it.  
+			 	*/
+				vm_page_reference(vpg);
+				vm_page_sleep(vpg, "tmfsmw");
+				goto lookupvpg;
+			}
+			vm_page_busy(vpg);
+			vm_page_undirty(vpg);
+			VM_OBJECT_UNLOCK(vobj);
+			error = uiomove_fromphys(&vpg, offset, tlen, uio);
+		} else {
+			if (vpg->flags & PG_CACHED) {
+				mtx_lock(&vm_page_queue_free_mtx);
+				if (vpg->object == vobj)
+					vm_page_cache_free(vpg);
+				mtx_unlock(&vm_page_queue_free_mtx);
+			}
+			VM_OBJECT_UNLOCK(vobj);
+			vpg = NULL;
 		}
-		vm_page_busy(vpg);
-		vm_page_undirty(vpg);
-		VM_OBJECT_UNLOCK(vobj);
-		error = uiomove_fromphys(&vpg, offset, tlen, uio);
 	} else {
 		VM_OBJECT_UNLOCK(vobj);
 		vpg = NULL;
Index: sys/sys/ktr.h
===================================================================
--- sys/sys/ktr.h	(revisione 233191)
+++ sys/sys/ktr.h	(copia locale)
@@ -75,7 +75,8 @@
 #define	KTR_INET6	0x10000000		/* IPv6 stack */
 #define	KTR_SCHED	0x20000000		/* Machine parsed sched info. */
 #define	KTR_BUF		0x40000000		/* Buffer cache */
-#define	KTR_ALL		0x7fffffff
+#define	KTR_FLO		0x80000000		/* Buffer cache */
+#define	KTR_ALL		0xffffffff
 
 /* Trace classes to compile in */
 #ifdef KTR
Index: sys/kern/vfs_subr.c
===================================================================
--- sys/kern/vfs_subr.c	(revisione 233191)
+++ sys/kern/vfs_subr.c	(copia locale)
@@ -771,6 +771,7 @@ vnlru_free(int count)
 	mtx_assert(&vnode_free_list_mtx, MA_OWNED);
 	for (; count > 0; count--) {
 		vp = TAILQ_FIRST(&vnode_free_list);
+		CTR2(KTR_FLO, "%s: first %p", __func__, vp);
 		/*
 		 * The list can be modified while the free_list_mtx
 		 * has been dropped and vp could be NULL here.
@@ -780,11 +781,13 @@ vnlru_free(int count)
 		VNASSERT(vp->v_op != NULL, vp,
 		    ("vnlru_free: vnode already reclaimed."));
 		TAILQ_REMOVE(&vnode_free_list, vp, v_freelist);
+		CTR2(KTR_FLO, "%s: remove %p", __func__, vp);
 		/*
 		 * Don't recycle if we can't get the interlock.
 		 */
 		if (!VI_TRYLOCK(vp)) {
 			TAILQ_INSERT_TAIL(&vnode_free_list, vp, v_freelist);
+			CTR2(KTR_FLO, "%s: reinsert tail %p", __func__, vp);
 			continue;
 		}
 		VNASSERT(VCANRECYCLE(vp), vp,
@@ -3330,8 +3333,10 @@ vfree(struct vnode *vp)
 	CTR2(KTR_VFS, "%s: vp %p", __func__, vp);
 	if (vp->v_iflag & VI_AGE) {
 		TAILQ_INSERT_HEAD(&vnode_free_list, vp, v_freelist);
+		CTR2(KTR_FLO, "%s: insert head %p", __func__, vp);
 	} else {
 		TAILQ_INSERT_TAIL(&vnode_free_list, vp, v_freelist);
+		CTR2(KTR_FLO, "%s: insert tail %p", __func__, vp);
 	}
 	freevnodes++;
 	vp->v_iflag &= ~VI_AGE;
@@ -3354,6 +3359,7 @@ vbusy(struct vnode *vp)
 	TAILQ_REMOVE(&vnode_free_list, vp, v_freelist);
 	freevnodes--;
 	vp->v_iflag &= ~(VI_FREE|VI_AGE);
+	CTR2(KTR_FLO, "%s: remove busy %p", __func__, vp);
 	mtx_unlock(&vnode_free_list_mtx);
 }