Add a f_vnode field to struct file.

Several of the subtypes have an associated vnode which is used for
stuff like the f*() functions.

By giving the vnode a speparate field, a number of checks for the specific
subtype can be replaced simply with a check for f_vnode != NULL, and
we can later free f_data up to subtype specific use.

At this point in time, f_data still points to the vnode, so any code I
might have overlooked will still work.

29 files changed, 105 insertions, 94 deletions

diff --git a/sys/alpha/osf1/osf1_mount.c b/sys/alpha/osf1/osf1_mount.c
index aa0e787..8b2882f 100644
--- a/sys/alpha/osf1/osf1_mount.c
+++ b/sys/alpha/osf1/osf1_mount.c
@@ -159,7 +159,7 @@ osf1_fstatfs(td, uap)
 
 	if ((error = getvnode(td->td_proc->p_fd, uap->fd, &fp)))
 		return (error);
-	mp = ((struct vnode *)fp->f_data)->v_mount;
+	mp = fp->f_vnode->v_mount;
 #ifdef MAC
 	error = mac_check_mount_stat(td->td_ucred, mp);
 	if (error) {
diff --git a/sys/compat/linux/linux_file.c b/sys/compat/linux/linux_file.c
index d61483a..96af89c 100644
--- a/sys/compat/linux/linux_file.c
+++ b/sys/compat/linux/linux_file.c
@@ -271,7 +271,7 @@ getdents_common(struct thread *td, struct linux_getdents64_args *args,
 		return (EBADF);
 	}
 
-	vp = fp->f_data;
+	vp = fp->f_vnode;
 	if (vp->v_type != VDIR) {
 		fdrop(fp, td);
 		return (EINVAL);
diff --git a/sys/compat/linux/linux_stats.c b/sys/compat/linux/linux_stats.c
index 3b873f8..8d90b1f 100644
--- a/sys/compat/linux/linux_stats.c
+++ b/sys/compat/linux/linux_stats.c
@@ -290,7 +290,7 @@ linux_fstatfs(struct thread *td, struct linux_fstatfs_args *args)
 	error = getvnode(td->td_proc->p_fd, args->fd, &fp);
 	if (error)
 		return error;
-	mp = ((struct vnode *)fp->f_data)->v_mount;
+	mp = fp->f_vnode->v_mount;
 #ifdef MAC
 	error = mac_check_mount_stat(td->td_ucred, mp);
 	if (error) {
diff --git a/sys/compat/svr4/svr4_fcntl.c b/sys/compat/svr4/svr4_fcntl.c
index c21afa7..7a01b15 100644
--- a/sys/compat/svr4/svr4_fcntl.c
+++ b/sys/compat/svr4/svr4_fcntl.c
@@ -312,7 +312,7 @@ fd_truncate(td, fd, flp)
 	if ((error = fget(td, fd, &fp)) != 0)
 		return (error);
 
-	vp = fp->f_data;
+	vp = fp->f_vnode;
 
 	if (fp->f_type != DTYPE_VNODE || vp->v_type == VFIFO) {
 		fdrop(fp, td);
diff --git a/sys/compat/svr4/svr4_misc.c b/sys/compat/svr4/svr4_misc.c
index 7cdb576..1766e88 100644
--- a/sys/compat/svr4/svr4_misc.c
+++ b/sys/compat/svr4/svr4_misc.c
@@ -272,7 +272,7 @@ svr4_sys_getdents64(td, uap)
 		return (EBADF);
 	}
 
-	vp = fp->f_data;
+	vp = fp->f_vnode;
 
 	if (vp->v_type != VDIR) {
 		fdrop(fp, td);
@@ -452,7 +452,7 @@ svr4_sys_getdents(td, uap)
 		return (EBADF);
 	}
 
-	vp = fp->f_data;
+	vp = fp->f_vnode;
 	if (vp->v_type != VDIR) {
 		fdrop(fp, td);
 		return (EINVAL);
@@ -628,7 +628,7 @@ svr4_sys_fchroot(td, uap)
 		return error;
 	if ((error = getvnode(fdp, uap->fd, &fp)) != 0)
 		return error;
-	vp = fp->f_data;
+	vp = fp->f_vnode;
 	vn_lock(vp, LK_EXCLUSIVE | LK_RETRY, td);
 	if (vp->v_type != VDIR)
 		error = ENOTDIR;
diff --git a/sys/fs/fdescfs/fdesc_vnops.c b/sys/fs/fdescfs/fdesc_vnops.c
index 3dfd9dd..dbdb012 100644
--- a/sys/fs/fdescfs/fdesc_vnops.c
+++ b/sys/fs/fdescfs/fdesc_vnops.c
@@ -395,7 +395,7 @@ fdesc_setattr(ap)
 		}
 		return (error);
 	}
-	vp = fp->f_data;
+	vp = fp->f_vnode;
 	if ((error = vn_start_write(vp, &mp, V_WAIT | PCATCH)) != 0) {
 		fdrop(fp, ap->a_td);
 		return (error);
diff --git a/sys/fs/unionfs/union_subr.c b/sys/fs/unionfs/union_subr.c
index c2e048a..94460cf 100644
--- a/sys/fs/unionfs/union_subr.c
+++ b/sys/fs/unionfs/union_subr.c
@@ -1349,6 +1349,7 @@ union_dircheck(struct thread *td, struct vnode **vp, struct file *fp)
 			}
 			VOP_UNLOCK(lvp, 0, td);
 			FILE_LOCK(fp);
+			fp->f_vnode = lvp;
 			fp->f_data = lvp;
 			fp->f_offset = 0;
 			FILE_UNLOCK(fp);
diff --git a/sys/i386/ibcs2/ibcs2_misc.c b/sys/i386/ibcs2/ibcs2_misc.c
index 013b757..8cd3488 100644
--- a/sys/i386/ibcs2/ibcs2_misc.c
+++ b/sys/i386/ibcs2/ibcs2_misc.c
@@ -324,7 +324,7 @@ ibcs2_getdents(td, uap)
 		fdrop(fp, td);
 		return (EBADF);
 	}
-	vp = fp->f_data;
+	vp = fp->f_vnode;
 	if (vp->v_type != VDIR) {	/* XXX  vnode readdir op should do this */
 		fdrop(fp, td);
 		return (EINVAL);
@@ -481,7 +481,7 @@ ibcs2_read(td, uap)
 		fdrop(fp, td);
 		return (EBADF);
 	}
-	vp = fp->f_data;
+	vp = fp->f_vnode;
 	if (vp->v_type != VDIR) {
 		fdrop(fp, td);
 		return read(td, (struct read_args *)uap);
diff --git a/sys/i386/ibcs2/ibcs2_stat.c b/sys/i386/ibcs2/ibcs2_stat.c
index 572b77b..74f8f7c 100644
--- a/sys/i386/ibcs2/ibcs2_stat.c
+++ b/sys/i386/ibcs2/ibcs2_stat.c
@@ -133,7 +133,7 @@ ibcs2_fstatfs(td, uap)
 
 	if ((error = getvnode(td->td_proc->p_fd, uap->fd, &fp)) != 0)
 		return (error);
-	mp = ((struct vnode *)fp->f_data)->v_mount;
+	mp = fp->f_vnode->v_mount;
 	sp = &mp->mnt_stat;
 	error = VFS_STATFS(mp, sp, td);
 	fdrop(fp, td);
diff --git a/sys/kern/kern_acl.c b/sys/kern/kern_acl.c
index d1bce92..5a60f78 100644
--- a/sys/kern/kern_acl.c
+++ b/sys/kern/kern_acl.c
@@ -781,7 +781,7 @@ __acl_get_fd(struct thread *td, struct __acl_get_fd_args *uap)
 	mtx_lock(&Giant);
 	error = getvnode(td->td_proc->p_fd, uap->filedes, &fp);
 	if (error == 0) {
-		error = vacl_get_acl(td, fp->f_data, uap->type, uap->aclp);
+		error = vacl_get_acl(td, fp->f_vnode, uap->type, uap->aclp);
 		fdrop(fp, td);
 	}
 	mtx_unlock(&Giant);
@@ -802,7 +802,7 @@ __acl_set_fd(struct thread *td, struct __acl_set_fd_args *uap)
 	mtx_lock(&Giant);
 	error = getvnode(td->td_proc->p_fd, uap->filedes, &fp);
 	if (error == 0) {
-		error = vacl_set_acl(td, fp->f_data, uap->type, uap->aclp);
+		error = vacl_set_acl(td, fp->f_vnode, uap->type, uap->aclp);
 		fdrop(fp, td);
 	}
 	mtx_unlock(&Giant);
@@ -867,7 +867,7 @@ __acl_delete_fd(struct thread *td, struct __acl_delete_fd_args *uap)
 	mtx_lock(&Giant);
 	error = getvnode(td->td_proc->p_fd, uap->filedes, &fp);
 	if (error == 0) {
-		error = vacl_delete(td, fp->f_data, uap->type);
+		error = vacl_delete(td, fp->f_vnode, uap->type);
 		fdrop(fp, td);
 	}
 	mtx_unlock(&Giant);
@@ -932,7 +932,7 @@ __acl_aclcheck_fd(struct thread *td, struct __acl_aclcheck_fd_args *uap)
 	mtx_lock(&Giant);
 	error = getvnode(td->td_proc->p_fd, uap->filedes, &fp);
 	if (error == 0) {
-		error = vacl_aclcheck(td, fp->f_data, uap->type, uap->aclp);
+		error = vacl_aclcheck(td, fp->f_vnode, uap->type, uap->aclp);
 		fdrop(fp, td);
 	}
 	mtx_unlock(&Giant);
diff --git a/sys/kern/kern_descrip.c b/sys/kern/kern_descrip.c
index 6699e32..c61d08a 100644
--- a/sys/kern/kern_descrip.c
+++ b/sys/kern/kern_descrip.c
@@ -352,7 +352,7 @@ kern_fcntl(struct thread *td, int fd, int cmd, intptr_t arg)
 		 */
 		fhold(fp);
 		FILEDESC_UNLOCK(fdp);
-		vp = fp->f_data;
+		vp = fp->f_vnode;
 
 		switch (flp->l_type) {
 		case F_RDLCK:
@@ -430,7 +430,7 @@ kern_fcntl(struct thread *td, int fd, int cmd, intptr_t arg)
 		 */
 		fhold(fp);
 		FILEDESC_UNLOCK(fdp);
-		vp = fp->f_data;
+		vp = fp->f_vnode;
 		error = VOP_ADVLOCK(vp, (caddr_t)p->p_leader, F_GETLK, flp,
 		    F_POSIX);
 		fdrop(fp, td);
@@ -1028,7 +1028,7 @@ fpathconf(td, uap)
 		break;
 	case DTYPE_FIFO:
 	case DTYPE_VNODE:
-		vp = fp->f_data;
+		vp = fp->f_vnode;
 		mtx_lock(&Giant);
 		vn_lock(vp, LK_EXCLUSIVE | LK_RETRY, td);
 		error = VOP_PATHCONF(vp, uap->name, td->td_retval);
@@ -1465,7 +1465,7 @@ fdfree(td)
 				lf.l_start = 0;
 				lf.l_len = 0;
 				lf.l_type = F_UNLCK;
-				vp = fp->f_data;
+				vp = fp->f_vnode;
 				(void) VOP_ADVLOCK(vp,
 						   (caddr_t)td->td_proc->
 						   p_leader,
@@ -1564,7 +1564,7 @@ static int
 is_unsafe(struct file *fp)
 {
 	if (fp->f_type == DTYPE_VNODE) {
-		struct vnode *vp = fp->f_data;
+		struct vnode *vp = fp->f_vnode;
 
 		if ((vp->v_vflag & VV_PROCDEP) != 0)
 			return (1);
@@ -1722,6 +1722,7 @@ fdcheckstd(td)
 				break;
 			}
 			NDFREE(&nd, NDF_ONLY_PNBUF);
+			fp->f_vnode = nd.ni_vp;
 			fp->f_data = nd.ni_vp;
 			fp->f_flag = flags;
 			fp->f_ops = &vnops;
@@ -1770,7 +1771,7 @@ closef(fp, td)
 			lf.l_start = 0;
 			lf.l_len = 0;
 			lf.l_type = F_UNLCK;
-			vp = fp->f_data;
+			vp = fp->f_vnode;
 			(void) VOP_ADVLOCK(vp, (caddr_t)td->td_proc->p_leader,
 					   F_UNLCK, &lf, F_POSIX);
 		}
@@ -1794,7 +1795,7 @@ closef(fp, td)
 				lf.l_start = 0;
 				lf.l_len = 0;
 				lf.l_type = F_UNLCK;
-				vp = fp->f_data;
+				vp = fp->f_vnode;
 				(void) VOP_ADVLOCK(vp,
 						   (caddr_t)fdtol->fdl_leader,
 						   F_UNLCK, &lf, F_POSIX);
@@ -1919,7 +1920,7 @@ _fgetvp(struct thread *td, int fd, struct vnode **vpp, int flags)
 	if (fp->f_type != DTYPE_VNODE && fp->f_type != DTYPE_FIFO) {
 		error = EINVAL;
 	} else {
-		*vpp = fp->f_data;
+		*vpp = fp->f_vnode;
 		vref(*vpp);
 	}
 	FILEDESC_UNLOCK(td->td_proc->p_fd);
@@ -2018,7 +2019,7 @@ fdrop_locked(fp, td)
 		lf.l_start = 0;
 		lf.l_len = 0;
 		lf.l_type = F_UNLCK;
-		vp = fp->f_data;
+		vp = fp->f_vnode;
 		(void) VOP_ADVLOCK(vp, (caddr_t)fp, F_UNLCK, &lf, F_FLOCK);
 	}
 	if (fp->f_ops != &badfileops)
@@ -2064,7 +2065,7 @@ flock(td, uap)
 	}
 
 	mtx_lock(&Giant);
-	vp = fp->f_data;
+	vp = fp->f_vnode;
 	lf.l_whence = SEEK_SET;
 	lf.l_start = 0;
 	lf.l_len = 0;
diff --git a/sys/kern/kern_mac.c b/sys/kern/kern_mac.c
index e5e25dc..79a12ec 100644
--- a/sys/kern/kern_mac.c
+++ b/sys/kern/kern_mac.c
@@ -3496,7 +3496,7 @@ __mac_get_fd(struct thread *td, struct __mac_get_fd_args *uap)
 	switch (fp->f_type) {
 	case DTYPE_FIFO:
 	case DTYPE_VNODE:
-		vp = fp->f_data;
+		vp = fp->f_vnode;
 
 		mac_init_vnode_label(&intlabel);
 
@@ -3704,7 +3704,7 @@ __mac_set_fd(struct thread *td, struct __mac_set_fd_args *uap)
 			break;
 		}
 
-		vp = fp->f_data;
+		vp = fp->f_vnode;
 		error = vn_start_write(vp, &mp, V_WAIT | PCATCH);
 		if (error != 0) {
 			mac_destroy_vnode_label(&intlabel);
diff --git a/sys/kern/subr_acl_posix1e.c b/sys/kern/subr_acl_posix1e.c
index d1bce92..5a60f78 100644
--- a/sys/kern/subr_acl_posix1e.c
+++ b/sys/kern/subr_acl_posix1e.c
@@ -781,7 +781,7 @@ __acl_get_fd(struct thread *td, struct __acl_get_fd_args *uap)
 	mtx_lock(&Giant);
 	error = getvnode(td->td_proc->p_fd, uap->filedes, &fp);
 	if (error == 0) {
-		error = vacl_get_acl(td, fp->f_data, uap->type, uap->aclp);
+		error = vacl_get_acl(td, fp->f_vnode, uap->type, uap->aclp);
 		fdrop(fp, td);
 	}
 	mtx_unlock(&Giant);
@@ -802,7 +802,7 @@ __acl_set_fd(struct thread *td, struct __acl_set_fd_args *uap)
 	mtx_lock(&Giant);
 	error = getvnode(td->td_proc->p_fd, uap->filedes, &fp);
 	if (error == 0) {
-		error = vacl_set_acl(td, fp->f_data, uap->type, uap->aclp);
+		error = vacl_set_acl(td, fp->f_vnode, uap->type, uap->aclp);
 		fdrop(fp, td);
 	}
 	mtx_unlock(&Giant);
@@ -867,7 +867,7 @@ __acl_delete_fd(struct thread *td, struct __acl_delete_fd_args *uap)
 	mtx_lock(&Giant);
 	error = getvnode(td->td_proc->p_fd, uap->filedes, &fp);
 	if (error == 0) {
-		error = vacl_delete(td, fp->f_data, uap->type);
+		error = vacl_delete(td, fp->f_vnode, uap->type);
 		fdrop(fp, td);
 	}
 	mtx_unlock(&Giant);
@@ -932,7 +932,7 @@ __acl_aclcheck_fd(struct thread *td, struct __acl_aclcheck_fd_args *uap)
 	mtx_lock(&Giant);
 	error = getvnode(td->td_proc->p_fd, uap->filedes, &fp);
 	if (error == 0) {
-		error = vacl_aclcheck(td, fp->f_data, uap->type, uap->aclp);
+		error = vacl_aclcheck(td, fp->f_vnode, uap->type, uap->aclp);
 		fdrop(fp, td);
 	}
 	mtx_unlock(&Giant);
diff --git a/sys/kern/vfs_acl.c b/sys/kern/vfs_acl.c
index d1bce92..5a60f78 100644
--- a/sys/kern/vfs_acl.c
+++ b/sys/kern/vfs_acl.c
@@ -781,7 +781,7 @@ __acl_get_fd(struct thread *td, struct __acl_get_fd_args *uap)
 	mtx_lock(&Giant);
 	error = getvnode(td->td_proc->p_fd, uap->filedes, &fp);
 	if (error == 0) {
-		error = vacl_get_acl(td, fp->f_data, uap->type, uap->aclp);
+		error = vacl_get_acl(td, fp->f_vnode, uap->type, uap->aclp);
 		fdrop(fp, td);
 	}
 	mtx_unlock(&Giant);
@@ -802,7 +802,7 @@ __acl_set_fd(struct thread *td, struct __acl_set_fd_args *uap)
 	mtx_lock(&Giant);
 	error = getvnode(td->td_proc->p_fd, uap->filedes, &fp);
 	if (error == 0) {
-		error = vacl_set_acl(td, fp->f_data, uap->type, uap->aclp);
+		error = vacl_set_acl(td, fp->f_vnode, uap->type, uap->aclp);
 		fdrop(fp, td);
 	}
 	mtx_unlock(&Giant);
@@ -867,7 +867,7 @@ __acl_delete_fd(struct thread *td, struct __acl_delete_fd_args *uap)
 	mtx_lock(&Giant);
 	error = getvnode(td->td_proc->p_fd, uap->filedes, &fp);
 	if (error == 0) {
-		error = vacl_delete(td, fp->f_data, uap->type);
+		error = vacl_delete(td, fp->f_vnode, uap->type);
 		fdrop(fp, td);
 	}
 	mtx_unlock(&Giant);
@@ -932,7 +932,7 @@ __acl_aclcheck_fd(struct thread *td, struct __acl_aclcheck_fd_args *uap)
 	mtx_lock(&Giant);
 	error = getvnode(td->td_proc->p_fd, uap->filedes, &fp);
 	if (error == 0) {
-		error = vacl_aclcheck(td, fp->f_data, uap->type, uap->aclp);
+		error = vacl_aclcheck(td, fp->f_vnode, uap->type, uap->aclp);
 		fdrop(fp, td);
 	}
 	mtx_unlock(&Giant);
diff --git a/sys/kern/vfs_aio.c b/sys/kern/vfs_aio.c
index ef6e305..fc52073 100644
--- a/sys/kern/vfs_aio.c
+++ b/sys/kern/vfs_aio.c
@@ -1059,7 +1059,7 @@ aio_qphysio(struct proc *p, struct aiocblist *aiocbe)
 	if (fp->f_type != DTYPE_VNODE) 
 		return (-1);
 
-	vp = fp->f_data;
+	vp = fp->f_vnode;
 
 	/*
 	 * If its not a disk, we don't want to return a positive error.
@@ -1723,7 +1723,7 @@ aio_cancel(struct thread *td, struct aio_cancel_args *uap)
 		return (EBADF);
 
         if (fp->f_type == DTYPE_VNODE) {
-		vp = fp->f_data;
+		vp = fp->f_vnode;
 		
 		if (vn_isdisk(vp,&error)) {
 			td->td_retval[0] = AIO_NOTCANCELED;
diff --git a/sys/kern/vfs_extattr.c b/sys/kern/vfs_extattr.c
index 30e16fc..3b45d43 100644
--- a/sys/kern/vfs_extattr.c
+++ b/sys/kern/vfs_extattr.c
@@ -282,7 +282,7 @@ fstatfs(td, uap)
 
 	if ((error = getvnode(td->td_proc->p_fd, uap->fd, &fp)) != 0)
 		return (error);
-	mp = ((struct vnode *)fp->f_data)->v_mount;
+	mp = fp->f_vnode->v_mount;
 	fdrop(fp, td);
 	if (mp == NULL)
 		return (EBADF);
@@ -403,7 +403,7 @@ fchdir(td, uap)
 
 	if ((error = getvnode(fdp, uap->fd, &fp)) != 0)
 		return (error);
-	vp = fp->f_data;
+	vp = fp->f_vnode;
 	VREF(vp);
 	fdrop(fp, td);
 	vn_lock(vp, LK_EXCLUSIVE | LK_RETRY, td);
@@ -502,7 +502,7 @@ chroot_refuse_vdir_fds(fdp)
 		if (fp == NULL)
 			continue;
 		if (fp->f_type == DTYPE_VNODE) {
-			vp = fp->f_data;
+			vp = fp->f_vnode;
 			if (vp->v_type == VDIR)
 				return (EPERM);
 		}
@@ -745,6 +745,7 @@ kern_open(struct thread *td, char *path, enum uio_seg pathseg, int flags,
 		td->td_retval[0] = indx;
 		return 0;
 	}
+	fp->f_vnode = vp;
 	fp->f_data = vp;
 	fp->f_flag = flags & FMASK;
 	fp->f_ops = &vnops;
@@ -1346,7 +1347,7 @@ lseek(td, uap)
 		fdrop(fp, td);
 		return (ESPIPE);
 	}
-	vp = fp->f_data;
+	vp = fp->f_vnode;
 	noneg = (vp->v_type != VCHR);
 	offset = uap->offset;
 	switch (uap->whence) {
@@ -2056,7 +2057,7 @@ fchflags(td, uap)
 
 	if ((error = getvnode(td->td_proc->p_fd, uap->fd, &fp)) != 0)
 		return (error);
-	error = setfflags(td, fp->f_data, uap->flags);
+	error = setfflags(td, fp->f_vnode, uap->flags);
 	fdrop(fp, td);
 	return (error);
 }
@@ -2180,7 +2181,7 @@ fchmod(td, uap)
 
 	if ((error = getvnode(td->td_proc->p_fd, uap->fd, &fp)) != 0)
 		return (error);
-	error = setfmode(td, fp->f_data, uap->mode);
+	error = setfmode(td, fp->f_vnode, uap->mode);
 	fdrop(fp, td);
 	return (error);
 }
@@ -2322,7 +2323,7 @@ fchown(td, uap)
 
 	if ((error = getvnode(td->td_proc->p_fd, uap->fd, &fp)) != 0)
 		return (error);
-	error = setfown(td, fp->f_data, uap->uid, uap->gid);
+	error = setfown(td, fp->f_vnode, uap->uid, uap->gid);
 	fdrop(fp, td);
 	return (error);
 }
@@ -2520,7 +2521,7 @@ kern_futimes(struct thread *td, int fd, struct timeval *tptr,
 		return (error);
 	if ((error = getvnode(td->td_proc->p_fd, fd, &fp)) != 0)
 		return (error);
-	error = setutimes(td, fp->f_data, ts, 2, tptr == NULL);
+	error = setutimes(td, fp->f_vnode, ts, 2, tptr == NULL);
 	fdrop(fp, td);
 	return (error);
 }
@@ -2622,7 +2623,7 @@ ftruncate(td, uap)
 		fdrop(fp, td);
 		return (EINVAL);
 	}
-	vp = fp->f_data;
+	vp = fp->f_vnode;
 	if ((error = vn_start_write(vp, &mp, V_WAIT | PCATCH)) != 0) {
 		fdrop(fp, td);
 		return (error);
@@ -2733,7 +2734,7 @@ fsync(td, uap)
 
 	if ((error = getvnode(td->td_proc->p_fd, uap->fd, &fp)) != 0)
 		return (error);
-	vp = fp->f_data;
+	vp = fp->f_vnode;
 	if ((error = vn_start_write(vp, &mp, V_WAIT | PCATCH)) != 0) {
 		fdrop(fp, td);
 		return (error);
@@ -3096,7 +3097,7 @@ ogetdirentries(td, uap)
 		fdrop(fp, td);
 		return (EBADF);
 	}
-	vp = fp->f_data;
+	vp = fp->f_vnode;
 unionread:
 	if (vp->v_type != VDIR) {
 		fdrop(fp, td);
@@ -3196,6 +3197,7 @@ unionread:
 			struct vnode *tvp = vp;
 			vp = vp->v_mount->mnt_vnodecovered;
 			VREF(vp);
+			fp->f_vnode = vp;
 			fp->f_data = vp;
 			fp->f_offset = 0;
 			vput(tvp);
@@ -3244,7 +3246,7 @@ getdirentries(td, uap)
 		fdrop(fp, td);
 		return (EBADF);
 	}
-	vp = fp->f_data;
+	vp = fp->f_vnode;
 unionread:
 	if (vp->v_type != VDIR) {
 		fdrop(fp, td);
@@ -3293,6 +3295,7 @@ unionread:
 			struct vnode *tvp = vp;
 			vp = vp->v_mount->mnt_vnodecovered;
 			VREF(vp);
+			fp->f_vnode = vp;
 			fp->f_data = vp;
 			fp->f_offset = 0;
 			vput(tvp);
@@ -3646,6 +3649,7 @@ fhopen(td, uap)
 	 * from under us while we block in the lock op
 	 */
 	fhold(fp);
+	nfp->f_vnode = vp;
 	nfp->f_data = vp;
 	nfp->f_flag = fmode & FMASK;
 	nfp->f_ops = &vnops;
@@ -3967,7 +3971,7 @@ extattr_set_fd(td, uap)
 	if (error)
 		return (error);
 
-	error = extattr_set_vp(fp->f_data, uap->attrnamespace,
+	error = extattr_set_vp(fp->f_vnode, uap->attrnamespace,
 	    attrname, uap->data, uap->nbytes, td);
 	fdrop(fp, td);
 
@@ -4140,7 +4144,7 @@ extattr_get_fd(td, uap)
 	if (error)
 		return (error);
 
-	error = extattr_get_vp(fp->f_data, uap->attrnamespace,
+	error = extattr_get_vp(fp->f_vnode, uap->attrnamespace,
 	    attrname, uap->data, uap->nbytes, td);
 
 	fdrop(fp, td);
@@ -4272,7 +4276,7 @@ extattr_delete_fd(td, uap)
 	error = getvnode(td->td_proc->p_fd, uap->fd, &fp);
 	if (error)
 		return (error);
-	vp = fp->f_data;
+	vp = fp->f_vnode;
 
 	error = extattr_delete_vp(vp, uap->attrnamespace, attrname, td);
 	fdrop(fp, td);
@@ -4418,7 +4422,7 @@ extattr_list_fd(td, uap)
 	if (error)
 		return (error);
 
-	error = extattr_list_vp(fp->f_data, uap->attrnamespace, uap->data,
+	error = extattr_list_vp(fp->f_vnode, uap->attrnamespace, uap->data,
 	    uap->nbytes, td);
 
 	fdrop(fp, td);
diff --git a/sys/kern/vfs_syscalls.c b/sys/kern/vfs_syscalls.c
index 30e16fc..3b45d43 100644
--- a/sys/kern/vfs_syscalls.c
+++ b/sys/kern/vfs_syscalls.c
@@ -282,7 +282,7 @@ fstatfs(td, uap)
 
 	if ((error = getvnode(td->td_proc->p_fd, uap->fd, &fp)) != 0)
 		return (error);
-	mp = ((struct vnode *)fp->f_data)->v_mount;
+	mp = fp->f_vnode->v_mount;
 	fdrop(fp, td);
 	if (mp == NULL)
 		return (EBADF);
@@ -403,7 +403,7 @@ fchdir(td, uap)
 
 	if ((error = getvnode(fdp, uap->fd, &fp)) != 0)
 		return (error);
-	vp = fp->f_data;
+	vp = fp->f_vnode;
 	VREF(vp);
 	fdrop(fp, td);
 	vn_lock(vp, LK_EXCLUSIVE | LK_RETRY, td);
@@ -502,7 +502,7 @@ chroot_refuse_vdir_fds(fdp)
 		if (fp == NULL)
 			continue;
 		if (fp->f_type == DTYPE_VNODE) {
-			vp = fp->f_data;
+			vp = fp->f_vnode;
 			if (vp->v_type == VDIR)
 				return (EPERM);
 		}
@@ -745,6 +745,7 @@ kern_open(struct thread *td, char *path, enum uio_seg pathseg, int flags,
 		td->td_retval[0] = indx;
 		return 0;
 	}
+	fp->f_vnode = vp;
 	fp->f_data = vp;
 	fp->f_flag = flags & FMASK;
 	fp->f_ops = &vnops;
@@ -1346,7 +1347,7 @@ lseek(td, uap)
 		fdrop(fp, td);
 		return (ESPIPE);
 	}
-	vp = fp->f_data;
+	vp = fp->f_vnode;
 	noneg = (vp->v_type != VCHR);
 	offset = uap->offset;
 	switch (uap->whence) {
@@ -2056,7 +2057,7 @@ fchflags(td, uap)
 
 	if ((error = getvnode(td->td_proc->p_fd, uap->fd, &fp)) != 0)
 		return (error);
-	error = setfflags(td, fp->f_data, uap->flags);
+	error = setfflags(td, fp->f_vnode, uap->flags);
 	fdrop(fp, td);
 	return (error);
 }
@@ -2180,7 +2181,7 @@ fchmod(td, uap)
 
 	if ((error = getvnode(td->td_proc->p_fd, uap->fd, &fp)) != 0)
 		return (error);
-	error = setfmode(td, fp->f_data, uap->mode);
+	error = setfmode(td, fp->f_vnode, uap->mode);
 	fdrop(fp, td);
 	return (error);
 }
@@ -2322,7 +2323,7 @@ fchown(td, uap)
 
 	if ((error = getvnode(td->td_proc->p_fd, uap->fd, &fp)) != 0)
 		return (error);
-	error = setfown(td, fp->f_data, uap->uid, uap->gid);
+	error = setfown(td, fp->f_vnode, uap->uid, uap->gid);
 	fdrop(fp, td);
 	return (error);
 }
@@ -2520,7 +2521,7 @@ kern_futimes(struct thread *td, int fd, struct timeval *tptr,
 		return (error);
 	if ((error = getvnode(td->td_proc->p_fd, fd, &fp)) != 0)
 		return (error);
-	error = setutimes(td, fp->f_data, ts, 2, tptr == NULL);
+	error = setutimes(td, fp->f_vnode, ts, 2, tptr == NULL);
 	fdrop(fp, td);
 	return (error);
 }
@@ -2622,7 +2623,7 @@ ftruncate(td, uap)
 		fdrop(fp, td);
 		return (EINVAL);
 	}
-	vp = fp->f_data;
+	vp = fp->f_vnode;
 	if ((error = vn_start_write(vp, &mp, V_WAIT | PCATCH)) != 0) {
 		fdrop(fp, td);
 		return (error);
@@ -2733,7 +2734,7 @@ fsync(td, uap)
 
 	if ((error = getvnode(td->td_proc->p_fd, uap->fd, &fp)) != 0)
 		return (error);
-	vp = fp->f_data;
+	vp = fp->f_vnode;
 	if ((error = vn_start_write(vp, &mp, V_WAIT | PCATCH)) != 0) {
 		fdrop(fp, td);
 		return (error);
@@ -3096,7 +3097,7 @@ ogetdirentries(td, uap)
 		fdrop(fp, td);
 		return (EBADF);
 	}
-	vp = fp->f_data;
+	vp = fp->f_vnode;
 unionread:
 	if (vp->v_type != VDIR) {
 		fdrop(fp, td);
@@ -3196,6 +3197,7 @@ unionread:
 			struct vnode *tvp = vp;
 			vp = vp->v_mount->mnt_vnodecovered;
 			VREF(vp);
+			fp->f_vnode = vp;
 			fp->f_data = vp;
 			fp->f_offset = 0;
 			vput(tvp);
@@ -3244,7 +3246,7 @@ getdirentries(td, uap)
 		fdrop(fp, td);
 		return (EBADF);
 	}
-	vp = fp->f_data;
+	vp = fp->f_vnode;
 unionread:
 	if (vp->v_type != VDIR) {
 		fdrop(fp, td);
@@ -3293,6 +3295,7 @@ unionread:
 			struct vnode *tvp = vp;
 			vp = vp->v_mount->mnt_vnodecovered;
 			VREF(vp);
+			fp->f_vnode = vp;
 			fp->f_data = vp;
 			fp->f_offset = 0;
 			vput(tvp);
@@ -3646,6 +3649,7 @@ fhopen(td, uap)
 	 * from under us while we block in the lock op
 	 */
 	fhold(fp);
+	nfp->f_vnode = vp;
 	nfp->f_data = vp;
 	nfp->f_flag = fmode & FMASK;
 	nfp->f_ops = &vnops;
@@ -3967,7 +3971,7 @@ extattr_set_fd(td, uap)
 	if (error)
 		return (error);
 
-	error = extattr_set_vp(fp->f_data, uap->attrnamespace,
+	error = extattr_set_vp(fp->f_vnode, uap->attrnamespace,
 	    attrname, uap->data, uap->nbytes, td);
 	fdrop(fp, td);
 
@@ -4140,7 +4144,7 @@ extattr_get_fd(td, uap)
 	if (error)
 		return (error);
 
-	error = extattr_get_vp(fp->f_data, uap->attrnamespace,
+	error = extattr_get_vp(fp->f_vnode, uap->attrnamespace,
 	    attrname, uap->data, uap->nbytes, td);
 
 	fdrop(fp, td);
@@ -4272,7 +4276,7 @@ extattr_delete_fd(td, uap)
 	error = getvnode(td->td_proc->p_fd, uap->fd, &fp);
 	if (error)
 		return (error);
-	vp = fp->f_data;
+	vp = fp->f_vnode;
 
 	error = extattr_delete_vp(vp, uap->attrnamespace, attrname, td);
 	fdrop(fp, td);
@@ -4418,7 +4422,7 @@ extattr_list_fd(td, uap)
 	if (error)
 		return (error);
 
-	error = extattr_list_vp(fp->f_data, uap->attrnamespace, uap->data,
+	error = extattr_list_vp(fp->f_vnode, uap->attrnamespace, uap->data,
 	    uap->nbytes, td);
 
 	fdrop(fp, td);
diff --git a/sys/kern/vfs_vnops.c b/sys/kern/vfs_vnops.c
index 786fad1..8d8f13d 100644
--- a/sys/kern/vfs_vnops.c
+++ b/sys/kern/vfs_vnops.c
@@ -510,7 +510,7 @@ vn_read(fp, uio, active_cred, flags, td)
 	mtx_lock(&Giant);
 	KASSERT(uio->uio_td == td, ("uio_td %p is not td %p",
 	    uio->uio_td, td));
-	vp = fp->f_data;
+	vp = fp->f_vnode;
 	ioflag = 0;
 	if (fp->f_flag & FNONBLOCK)
 		ioflag |= IO_NDELAY;
@@ -560,7 +560,7 @@ vn_write(fp, uio, active_cred, flags, td)
 	mtx_lock(&Giant);
 	KASSERT(uio->uio_td == td, ("uio_td %p is not td %p",
 	    uio->uio_td, td));
-	vp = fp->f_data;
+	vp = fp->f_vnode;
 	if (vp->v_type == VREG)
 		bwillwrite();
 	ioflag = IO_UNIT;
@@ -608,7 +608,7 @@ vn_statfile(fp, sb, active_cred, td)
 	struct ucred *active_cred;
 	struct thread *td;
 {
-	struct vnode *vp = fp->f_data;
+	struct vnode *vp = fp->f_vnode;
 	int error;
 
 	vn_lock(vp, LK_EXCLUSIVE | LK_RETRY, td);
@@ -751,7 +751,7 @@ vn_ioctl(fp, com, data, active_cred, td)
 	struct ucred *active_cred;
 	struct thread *td;
 {
-	struct vnode *vp = fp->f_data;
+	struct vnode *vp = fp->f_vnode;
 	struct vnode *vpold;
 	struct vattr vattr;
 	int error;
@@ -833,7 +833,7 @@ vn_poll(fp, events, active_cred, td)
 	int error;
 #endif
 
-	vp = fp->f_data;
+	vp = fp->f_vnode;
 #ifdef MAC
 	vn_lock(vp, LK_EXCLUSIVE | LK_RETRY, td);
 	error = mac_check_vnode_poll(active_cred, fp->f_cred, vp);
@@ -901,7 +901,7 @@ vn_closefile(fp, td)
 {
 
 	fp->f_ops = &badfileops;
-	return (vn_close(fp->f_data, fp->f_flag, fp->f_cred, td));
+	return (vn_close(fp->f_vnode, fp->f_flag, fp->f_cred, td));
 }
 
 /*
@@ -1052,7 +1052,7 @@ static int
 vn_kqfilter(struct file *fp, struct knote *kn)
 {
 
-	return (VOP_KQFILTER(fp->f_data, kn));
+	return (VOP_KQFILTER(fp->f_vnode, kn));
 }
 
 /*
diff --git a/sys/netsmb/smb_dev.c b/sys/netsmb/smb_dev.c
index 7afff66..12cf996 100644
--- a/sys/netsmb/smb_dev.c
+++ b/sys/netsmb/smb_dev.c
@@ -389,7 +389,7 @@ smb_dev2share(int fd, int mode, struct smb_cred *scred,
 	fp = nsmb_getfp(scred->scr_td->td_proc->p_fd, fd, FREAD | FWRITE);
 	if (fp == NULL)
 		return EBADF;
-	vp = fp->f_data;
+	vp = fp->f_vnode;
 	if (vp == NULL) {
 		fdrop(fp, curthread);
 		return EBADF;
diff --git a/sys/security/mac/mac_framework.c b/sys/security/mac/mac_framework.c
index e5e25dc..79a12ec 100644
--- a/sys/security/mac/mac_framework.c
+++ b/sys/security/mac/mac_framework.c
@@ -3496,7 +3496,7 @@ __mac_get_fd(struct thread *td, struct __mac_get_fd_args *uap)
 	switch (fp->f_type) {
 	case DTYPE_FIFO:
 	case DTYPE_VNODE:
-		vp = fp->f_data;
+		vp = fp->f_vnode;
 
 		mac_init_vnode_label(&intlabel);
 
@@ -3704,7 +3704,7 @@ __mac_set_fd(struct thread *td, struct __mac_set_fd_args *uap)
 			break;
 		}
 
-		vp = fp->f_data;
+		vp = fp->f_vnode;
 		error = vn_start_write(vp, &mp, V_WAIT | PCATCH);
 		if (error != 0) {
 			mac_destroy_vnode_label(&intlabel);
diff --git a/sys/security/mac/mac_internal.h b/sys/security/mac/mac_internal.h
index e5e25dc..79a12ec 100644
--- a/sys/security/mac/mac_internal.h
+++ b/sys/security/mac/mac_internal.h
@@ -3496,7 +3496,7 @@ __mac_get_fd(struct thread *td, struct __mac_get_fd_args *uap)
 	switch (fp->f_type) {
 	case DTYPE_FIFO:
 	case DTYPE_VNODE:
-		vp = fp->f_data;
+		vp = fp->f_vnode;
 
 		mac_init_vnode_label(&intlabel);
 
@@ -3704,7 +3704,7 @@ __mac_set_fd(struct thread *td, struct __mac_set_fd_args *uap)
 			break;
 		}
 
-		vp = fp->f_data;
+		vp = fp->f_vnode;
 		error = vn_start_write(vp, &mp, V_WAIT | PCATCH);
 		if (error != 0) {
 			mac_destroy_vnode_label(&intlabel);
diff --git a/sys/security/mac/mac_net.c b/sys/security/mac/mac_net.c
index e5e25dc..79a12ec 100644
--- a/sys/security/mac/mac_net.c
+++ b/sys/security/mac/mac_net.c
@@ -3496,7 +3496,7 @@ __mac_get_fd(struct thread *td, struct __mac_get_fd_args *uap)
 	switch (fp->f_type) {
 	case DTYPE_FIFO:
 	case DTYPE_VNODE:
-		vp = fp->f_data;
+		vp = fp->f_vnode;
 
 		mac_init_vnode_label(&intlabel);
 
@@ -3704,7 +3704,7 @@ __mac_set_fd(struct thread *td, struct __mac_set_fd_args *uap)
 			break;
 		}
 
-		vp = fp->f_data;
+		vp = fp->f_vnode;
 		error = vn_start_write(vp, &mp, V_WAIT | PCATCH);
 		if (error != 0) {
 			mac_destroy_vnode_label(&intlabel);
diff --git a/sys/security/mac/mac_pipe.c b/sys/security/mac/mac_pipe.c
index e5e25dc..79a12ec 100644
--- a/sys/security/mac/mac_pipe.c
+++ b/sys/security/mac/mac_pipe.c
@@ -3496,7 +3496,7 @@ __mac_get_fd(struct thread *td, struct __mac_get_fd_args *uap)
 	switch (fp->f_type) {
 	case DTYPE_FIFO:
 	case DTYPE_VNODE:
-		vp = fp->f_data;
+		vp = fp->f_vnode;
 
 		mac_init_vnode_label(&intlabel);
 
@@ -3704,7 +3704,7 @@ __mac_set_fd(struct thread *td, struct __mac_set_fd_args *uap)
 			break;
 		}
 
-		vp = fp->f_data;
+		vp = fp->f_vnode;
 		error = vn_start_write(vp, &mp, V_WAIT | PCATCH);
 		if (error != 0) {
 			mac_destroy_vnode_label(&intlabel);
diff --git a/sys/security/mac/mac_process.c b/sys/security/mac/mac_process.c
index e5e25dc..79a12ec 100644
--- a/sys/security/mac/mac_process.c
+++ b/sys/security/mac/mac_process.c
@@ -3496,7 +3496,7 @@ __mac_get_fd(struct thread *td, struct __mac_get_fd_args *uap)
 	switch (fp->f_type) {
 	case DTYPE_FIFO:
 	case DTYPE_VNODE:
-		vp = fp->f_data;
+		vp = fp->f_vnode;
 
 		mac_init_vnode_label(&intlabel);
 
@@ -3704,7 +3704,7 @@ __mac_set_fd(struct thread *td, struct __mac_set_fd_args *uap)
 			break;
 		}
 
-		vp = fp->f_data;
+		vp = fp->f_vnode;
 		error = vn_start_write(vp, &mp, V_WAIT | PCATCH);
 		if (error != 0) {
 			mac_destroy_vnode_label(&intlabel);
diff --git a/sys/security/mac/mac_syscalls.c b/sys/security/mac/mac_syscalls.c
index e5e25dc..79a12ec 100644
--- a/sys/security/mac/mac_syscalls.c
+++ b/sys/security/mac/mac_syscalls.c
@@ -3496,7 +3496,7 @@ __mac_get_fd(struct thread *td, struct __mac_get_fd_args *uap)
 	switch (fp->f_type) {
 	case DTYPE_FIFO:
 	case DTYPE_VNODE:
-		vp = fp->f_data;
+		vp = fp->f_vnode;
 
 		mac_init_vnode_label(&intlabel);
 
@@ -3704,7 +3704,7 @@ __mac_set_fd(struct thread *td, struct __mac_set_fd_args *uap)
 			break;
 		}
 
-		vp = fp->f_data;
+		vp = fp->f_vnode;
 		error = vn_start_write(vp, &mp, V_WAIT | PCATCH);
 		if (error != 0) {
 			mac_destroy_vnode_label(&intlabel);
diff --git a/sys/security/mac/mac_system.c b/sys/security/mac/mac_system.c
index e5e25dc..79a12ec 100644
--- a/sys/security/mac/mac_system.c
+++ b/sys/security/mac/mac_system.c
@@ -3496,7 +3496,7 @@ __mac_get_fd(struct thread *td, struct __mac_get_fd_args *uap)
 	switch (fp->f_type) {
 	case DTYPE_FIFO:
 	case DTYPE_VNODE:
-		vp = fp->f_data;
+		vp = fp->f_vnode;
 
 		mac_init_vnode_label(&intlabel);
 
@@ -3704,7 +3704,7 @@ __mac_set_fd(struct thread *td, struct __mac_set_fd_args *uap)
 			break;
 		}
 
-		vp = fp->f_data;
+		vp = fp->f_vnode;
 		error = vn_start_write(vp, &mp, V_WAIT | PCATCH);
 		if (error != 0) {
 			mac_destroy_vnode_label(&intlabel);
diff --git a/sys/security/mac/mac_vfs.c b/sys/security/mac/mac_vfs.c
index e5e25dc..79a12ec 100644
--- a/sys/security/mac/mac_vfs.c
+++ b/sys/security/mac/mac_vfs.c
@@ -3496,7 +3496,7 @@ __mac_get_fd(struct thread *td, struct __mac_get_fd_args *uap)
 	switch (fp->f_type) {
 	case DTYPE_FIFO:
 	case DTYPE_VNODE:
-		vp = fp->f_data;
+		vp = fp->f_vnode;
 
 		mac_init_vnode_label(&intlabel);
 
@@ -3704,7 +3704,7 @@ __mac_set_fd(struct thread *td, struct __mac_set_fd_args *uap)
 			break;
 		}
 
-		vp = fp->f_data;
+		vp = fp->f_vnode;
 		error = vn_start_write(vp, &mp, V_WAIT | PCATCH);
 		if (error != 0) {
 			mac_destroy_vnode_label(&intlabel);
diff --git a/sys/sys/file.h b/sys/sys/file.h
index 71170bd..0b71ab6 100644
--- a/sys/sys/file.h
+++ b/sys/sys/file.h
@@ -116,6 +116,7 @@ struct file {
 	struct fileops *f_ops;	/* File operations */
 	struct	ucred *f_cred;	/* credentials associated with descriptor */
 	int	f_count;	/* (f) reference count */
+	struct vnode *f_vnode;	/* NULL or applicable vnode */
 
 	/* DFLAG_SEEKABLE specific fields */
 	off_t	f_offset;
diff --git a/sys/vm/vm_mmap.c b/sys/vm/vm_mmap.c
index 7e446d1..af0d0ab 100644
--- a/sys/vm/vm_mmap.c
+++ b/sys/vm/vm_mmap.c
@@ -313,7 +313,7 @@ mmap(td, uap)
 		 */
 		if (fp->f_flag & FPOSIXSHM)
 			flags |= MAP_NOSYNC;
-		vp = fp->f_data;
+		vp = fp->f_vnode;
 		error = vget(vp, LK_EXCLUSIVE, td);
 		if (error)
 			goto done;