diff --git a/sys/kern/vfs_extattr.c b/sys/kern/vfs_extattr.c
index 95e9de03dfe..3870776201f 100644
--- a/sys/kern/vfs_extattr.c
+++ b/sys/kern/vfs_extattr.c
@@ -36,7 +36,7 @@
  * SUCH DAMAGE.
  *
  *	@(#)vfs_syscalls.c	8.13 (Berkeley) 4/15/94
- * $Id: vfs_syscalls.c,v 1.47 1996/05/11 04:39:53 bde Exp $
+ * $Id: vfs_syscalls.c,v 1.48 1996/05/24 16:19:23 peter Exp $
  */
 
 /*
@@ -182,9 +182,9 @@ update:
 	else if (mp->mnt_flag & MNT_RDONLY)
 		mp->mnt_flag |= MNT_WANTRDWR;
 	mp->mnt_flag &=~ (MNT_NOSUID | MNT_NOEXEC | MNT_NODEV |
-	    MNT_SYNCHRONOUS | MNT_UNION | MNT_ASYNC);
+	    MNT_SYNCHRONOUS | MNT_UNION | MNT_ASYNC | MNT_NOATIME);
 	mp->mnt_flag |= uap->flags & (MNT_NOSUID | MNT_NOEXEC | MNT_NODEV |
-	    MNT_SYNCHRONOUS | MNT_UNION | MNT_ASYNC | MNT_FORCE);
+	    MNT_SYNCHRONOUS | MNT_UNION | MNT_ASYNC | MNT_FORCE | MNT_NOATIME);
 	/*
 	 * Mount the filesystem.
 	 */
diff --git a/sys/kern/vfs_syscalls.c b/sys/kern/vfs_syscalls.c
index 95e9de03dfe..3870776201f 100644
--- a/sys/kern/vfs_syscalls.c
+++ b/sys/kern/vfs_syscalls.c
@@ -36,7 +36,7 @@
  * SUCH DAMAGE.
  *
  *	@(#)vfs_syscalls.c	8.13 (Berkeley) 4/15/94
- * $Id: vfs_syscalls.c,v 1.47 1996/05/11 04:39:53 bde Exp $
+ * $Id: vfs_syscalls.c,v 1.48 1996/05/24 16:19:23 peter Exp $
  */
 
 /*
@@ -182,9 +182,9 @@ update:
 	else if (mp->mnt_flag & MNT_RDONLY)
 		mp->mnt_flag |= MNT_WANTRDWR;
 	mp->mnt_flag &=~ (MNT_NOSUID | MNT_NOEXEC | MNT_NODEV |
-	    MNT_SYNCHRONOUS | MNT_UNION | MNT_ASYNC);
+	    MNT_SYNCHRONOUS | MNT_UNION | MNT_ASYNC | MNT_NOATIME);
 	mp->mnt_flag |= uap->flags & (MNT_NOSUID | MNT_NOEXEC | MNT_NODEV |
-	    MNT_SYNCHRONOUS | MNT_UNION | MNT_ASYNC | MNT_FORCE);
+	    MNT_SYNCHRONOUS | MNT_UNION | MNT_ASYNC | MNT_FORCE | MNT_NOATIME);
 	/*
 	 * Mount the filesystem.
 	 */
diff --git a/sys/sys/mount.h b/sys/sys/mount.h
index e6bad82c15f..d044d29b268 100644
--- a/sys/sys/mount.h
+++ b/sys/sys/mount.h
@@ -31,7 +31,7 @@
  * SUCH DAMAGE.
  *
  *	@(#)mount.h	8.13 (Berkeley) 3/27/94
- *	$Id: mount.h,v 1.30 1995/12/22 16:02:39 phk Exp $
+ *	$Id: mount.h,v 1.31 1996/01/30 23:00:54 mpp Exp $
  */
 
 #ifndef _SYS_MOUNT_H_
@@ -63,8 +63,7 @@ struct fid {
 #define MNAMELEN 90	/* length of buffer for returned name */
 
 struct statfs {
-	short	f_type;			/* type of filesystem (see below) */
-	short	f_flags;		/* copy of mount flags */
+	long	f_spare2;		/* placeholder */
 	long	f_bsize;		/* fundamental file system block size */
 	long	f_iosize;		/* optimal transfer block size */
 	long	f_blocks;		/* total data blocks in file system */
@@ -73,7 +72,10 @@ struct statfs {
 	long	f_files;		/* total file nodes in file system */
 	long	f_ffree;		/* free file nodes in fs */
 	fsid_t	f_fsid;			/* file system id */
-	long	f_spare[9];		/* spare for later */
+	uid_t	f_owner;		/* user that mounted the filesystem */
+	int	f_type;			/* type of filesystem (see below) */
+	int	f_flags;		/* copy of mount flags */
+	long	f_spare[6];		/* spare for later */
 	char	f_mntonname[MNAMELEN];	/* directory on which mounted */
 	char	f_mntfromname[MNAMELEN];/* mounted filesystem */
 };
@@ -156,6 +158,7 @@ struct mount {
 #define	MNT_NODEV	0x00000010	/* don't interpret special files */
 #define	MNT_UNION	0x00000020	/* union with underlying filesystem */
 #define	MNT_ASYNC	0x00000040	/* file system written asynchronously */
+#define	MNT_NOATIME	0x10000000	/* Disable update of file access times */
 
 /*
  * exported mount flags.
@@ -177,7 +180,10 @@ struct mount {
 /*
  * Mask of flags that are visible to statfs()
  */
-#define	MNT_VISFLAGMASK	0x0000ffff
+#define	MNT_VISFLAGMASK	(MNT_RDONLY|MNT_SYNCHRONOUS|MNT_NOEXEC|MNT_NOSUID| \
+			 MNT_NODEV|MNT_UNION|MNT_ASYNC|MNT_EXRDONLY|MNT_EXPORTED| \
+			 MNT_DEFEXPORTED|MNT_EXPORTANON|MNT_EXKERB|MNT_LOCAL| \
+			 MNT_QUOTA|MNT_ROOTFS|MNT_USER|MNT_NOATIME)
 
 /*
  * filesystem control flags.
diff --git a/sys/ufs/ufs/ufs_readwrite.c b/sys/ufs/ufs/ufs_readwrite.c
index ff2c5401572..415e7c6a70e 100644
--- a/sys/ufs/ufs/ufs_readwrite.c
+++ b/sys/ufs/ufs/ufs_readwrite.c
@@ -31,7 +31,7 @@
  * SUCH DAMAGE.
  *
  *	@(#)ufs_readwrite.c	8.7 (Berkeley) 1/21/94
- * $Id: ufs_readwrite.c,v 1.20 1996/01/19 03:59:26 dyson Exp $
+ * $Id: ufs_readwrite.c,v 1.21 1996/06/25 03:00:44 davidg Exp $
  */
 
 #ifdef LFS_READWRITE
@@ -163,7 +163,8 @@ READ(ap)
 	}
 	if (bp != NULL)
 		bqrelse(bp);
-	ip->i_flag |= IN_ACCESS;
+	if (!(vp->v_mount->mnt_flag & MNT_NOATIME))
+		ip->i_flag |= IN_ACCESS;
 	return (error);
 }