only move vnode to front of list when not already there

SCCS-vsn: sys/kern/vfs_subr.c 7.89

diff --git a/usr/src/sys/kern/vfs_subr.c b/usr/src/sys/kern/vfs_subr.c
index 7dbe928..6b4da1e 100644 (file)
--- a/usr/src/sys/kern/vfs_subr.c
+++ b/usr/src/sys/kern/vfs_subr.c
@@ -4,7 +4,7 @@
  *
  * %sccs.include.redist.c%
  *
  *
  * %sccs.include.redist.c%
  *

- *     @(#)vfs_subr.c  7.88 (Berkeley) %G%
+ *     @(#)vfs_subr.c  7.89 (Berkeley) %G%

  */
 
 /*
  */
 
 /*


@@ -892,9 +892,10 @@ void vgone(vp)
                vp->v_specinfo = NULL;
        }
        /*
                vp->v_specinfo = NULL;
        }
        /*

-        * If it is on the freelist, move it to the head of the list.
+        * If it is on the freelist and not already at the head,
+        * move it to the head of the list.

         */
         */

-       if (vp->v_freeb) {
+       if (vp->v_freeb && vfreeh != vp) {

                if (vq = vp->v_freef)
                        vq->v_freeb = vp->v_freeb;
                else
                if (vq = vp->v_freef)
                        vq->v_freeb = vp->v_freeb;
                else