xnu-792.6.56.tar.gz

[apple/xnu.git] / bsd / miscfs / nullfs / null_subr.c

diff --git a/bsd/miscfs/nullfs/null_subr.c b/bsd/miscfs/nullfs/null_subr.c
index 133cdb9323f573753f24cfc5b496df01673d42a5..9734c4d8687a3d1e089fd9cbfdb4b4850d8acf85 100644 (file)
--- a/bsd/miscfs/nullfs/null_subr.c
+++ b/bsd/miscfs/nullfs/null_subr.c
@@ -3,19 +3,20 @@
  *
  * @APPLE_LICENSE_HEADER_START@
  * 
- * The contents of this file constitute Original Code as defined in and
- * are subject to the Apple Public Source License Version 1.1 (the
- * "License").  You may not use this file except in compliance with the
- * License.  Please obtain a copy of the License at
- * http://www.apple.com/publicsource and read it before using this file.
+ * This file contains Original Code and/or Modifications of Original Code
+ * as defined in and that are subject to the Apple Public Source License
+ * Version 2.0 (the 'License'). You may not use this file except in
+ * compliance with the License. Please obtain a copy of the License at
+ * http://www.opensource.apple.com/apsl/ and read it before using this
+ * file.
  * 
- * This Original Code and all software distributed under the License are
- * distributed on an "AS IS" basis, WITHOUT WARRANTY OF ANY KIND, EITHER
+ * The Original Code and all software distributed under the License are
+ * distributed on an 'AS IS' basis, WITHOUT WARRANTY OF ANY KIND, EITHER
  * EXPRESS OR IMPLIED, AND APPLE HEREBY DISCLAIMS ALL SUCH WARRANTIES,
  * INCLUDING WITHOUT LIMITATION, ANY WARRANTIES OF MERCHANTABILITY,
- * FITNESS FOR A PARTICULAR PURPOSE OR NON-INFRINGEMENT.  Please see the
- * License for the specific language governing rights and limitations
- * under the License.
+ * FITNESS FOR A PARTICULAR PURPOSE, QUIET ENJOYMENT OR NON-INFRINGEMENT.
+ * Please see the License for the specific language governing rights and
+ * limitations under the License.
  * 
  * @APPLE_LICENSE_HEADER_END@
  */
@@ -66,7 +67,7 @@
 #include <sys/time.h>
 #include <sys/types.h>
 #include <sys/vnode.h>
-#include <sys/mount.h>
+#include <sys/mount_internal.h>
 #include <sys/namei.h>
 #include <sys/malloc.h>
 #include <sys/ubc.h>
@@ -79,8 +80,8 @@
  * Null layer cache:
  * Each cache entry holds a reference to the lower vnode
  * along with a pointer to the alias vnode.  When an
- * entry is added the lower vnode is VREF'd.  When the
- * alias is removed the lower vnode is vrele'd.
+ * entry is added the lower vnode is vnode_get'd.  When the
+ * alias is removed the lower vnode is vnode_put'd.
  */
 
 #define        NULL_NHASH(vp) \
@@ -101,7 +102,7 @@ nullfs_init()
 }
 
 /*
- * Return a VREF'ed alias for lower vnode if already exists, else 0.
+ * Return a vnode_get'ed alias for lower vnode if already exists, else 0.
  */
 static struct vnode *
 null_node_find(mp, lowervp)
@@ -117,19 +118,15 @@ null_node_find(mp, lowervp)
         * Find hash base, and then search the (two-way) linked
         * list looking for a null_node structure which is referencing
         * the lower vnode.  If found, the increment the null_node
-        * reference count (but NOT the lower vnode's VREF counter).
+        * reference count (but NOT the lower vnode's vnode_get counter).
         */
        hd = NULL_NHASH(lowervp);
 loop:
        for (a = hd->lh_first; a != 0; a = a->null_hash.le_next) {
                if (a->null_lowervp == lowervp && NULLTOV(a)->v_mount == mp) {
                        vp = NULLTOV(a);
-                       /*
-                        * We need vget for the VXLOCK
-                        * stuff, but we don't want to lock
-                        * the lower node.
-                        */
-                       if (vget(vp, 0, p)) {
+
+                       if (vnode_get(vp)) {
                                printf ("null_node_find: vget failed.\n");
                                goto loop;
                        };
@@ -182,7 +179,7 @@ null_node_alloc(mp, lowervp, vpp)
        };
        if (vp->v_type == VREG)
                ubc_info_init(vp);
-       VREF(lowervp);   /* Extra VREF will be vrele'd in null_node_create */
+       vnode_get(lowervp);   /* Extra vnode_get will be vnode_put'd in null_node_create */
        hd = NULL_NHASH(lowervp);
        LIST_INSERT_HEAD(hd, xp, null_hash);
        return 0;
@@ -210,7 +207,7 @@ null_node_create(mp, lowervp, newvpp)
 #ifdef NULLFS_DIAGNOSTIC
                vprint("null_node_create: exists", NULLTOV(ap));
 #endif
-               /* VREF(aliasvp); --- done in null_node_find */
+               /* vnode_get(aliasvp); --- done in null_node_find */
        } else {
                int error;
 
@@ -228,11 +225,11 @@ null_node_create(mp, lowervp, newvpp)
                        return error;
 
                /*
-                * aliasvp is already VREF'd by getnewvnode()
+                * aliasvp is already vnode_get'd by getnewvnode()
                 */
        }
 
-       vrele(lowervp);
+       vnode_put(lowervp);
 
 #if DIAGNOSTIC
        if (lowervp->v_usecount < 1) {
@@ -261,7 +258,7 @@ null_checkvp(vp, fil, lno)
        struct null_node *a = VTONULL(vp);
 #ifdef notyet
        /*
-        * Can't do this check because vop_reclaim runs
+        * Can't do this check because vnop_reclaim runs
         * with a funny vop vector.
         */
        if (vp->v_op != null_vnodeop_p) {