[src/trunk]: src/sys/fs/puffs Add a few KASSERT() - I have a crash that likel...

[martin <martin%NetBSD.org@localhost>]

details:   https://anonhg.NetBSD.org/src/rev/16e8b412f64d
branches:  trunk
changeset: 772810:16e8b412f64d
user:      martin <martin%NetBSD.org@localhost>
date:      Tue Jan 17 09:30:16 2012 +0000

description:
Add a few KASSERT() - I have a crash that likely will cause one of them to
fire...

diffstat:

 sys/fs/puffs/puffs_vnops.c |  15 ++++++++++-----
 1 files changed, 10 insertions(+), 5 deletions(-)

diffs (38 lines):

diff -r a443ca4d975d -r 16e8b412f64d sys/fs/puffs/puffs_vnops.c
--- a/sys/fs/puffs/puffs_vnops.c        Tue Jan 17 08:23:40 2012 +0000
+++ b/sys/fs/puffs/puffs_vnops.c        Tue Jan 17 09:30:16 2012 +0000
@@ -1,4 +1,4 @@
-/*     $NetBSD: puffs_vnops.c,v 1.162 2011/11/18 21:18:50 christos Exp $       */
+/*     $NetBSD: puffs_vnops.c,v 1.163 2012/01/17 09:30:16 martin Exp $ */
 
 /*
  * Copyright (c) 2005, 2006, 2007  Antti Kantee.  All Rights Reserved.
@@ -30,7 +30,7 @@
  */
 
 #include <sys/cdefs.h>
-__KERNEL_RCSID(0, "$NetBSD: puffs_vnops.c,v 1.162 2011/11/18 21:18:50 christos Exp $");
+__KERNEL_RCSID(0, "$NetBSD: puffs_vnops.c,v 1.163 2012/01/17 09:30:16 martin Exp $");
 
 #include <sys/param.h>
 #include <sys/buf.h>
@@ -1356,11 +1356,16 @@
                off_t a_offhi;
        } */ *ap = v;
        PUFFS_MSG_VARS(vn, fsync);
-       struct vnode *vp = ap->a_vp;
-       struct puffs_node *pn = VPTOPP(vp);
-       struct puffs_mount *pmp = MPTOPUFFSMP(vp->v_mount);
+       struct vnode *vp;
+       struct puffs_node *pn;
+       struct puffs_mount *pmp;
        int error, dofaf;
 
+       vp = ap->a_vp;
+       KASSERT(vp != NULL);
+       pn = VPTOPP(vp);
+       KASSERT(pn != NULL);
+       pmp = MPTOPUFFSMP(vp->v_mount);
        if (ap->a_flags & FSYNC_WAIT) {
                mutex_enter(&pn->pn_sizemtx);
        } else {