diff --git a/sbin/mount_fusefs/mount_fusefs.c b/sbin/mount_fusefs/mount_fusefs.c
--- a/sbin/mount_fusefs/mount_fusefs.c
+++ b/sbin/mount_fusefs/mount_fusefs.c
@@ -84,6 +84,8 @@
 	{ "automounted",	0, ALTF_AUTOMOUNTED, 1 },
 	#define ALTF_INTR 0x200
 	{ "intr",		0, ALTF_INTR, 1 },
+	#define ALTF_AUTOUNMOUNT 0x400
+	{ "auto_unmount",		0, ALTF_AUTOUNMOUNT, 1 },
 	/* Linux specific options, we silently ignore them */
 	{ "fd=",                 0, 0x00, 1 },
 	{ "rootmode=",           0, 0x00, 1 },
diff --git a/sys/fs/fuse/fuse_device.c b/sys/fs/fuse/fuse_device.c
--- a/sys/fs/fuse/fuse_device.c
+++ b/sys/fs/fuse/fuse_device.c
@@ -65,7 +65,6 @@
 #include <sys/module.h>
 #include <sys/systm.h>
 #include <sys/errno.h>
-#include <sys/param.h>
 #include <sys/kernel.h>
 #include <sys/conf.h>
 #include <sys/uio.h>
@@ -104,6 +103,7 @@
 
 static d_kqfilter_t fuse_device_filter;
 static d_open_t fuse_device_open;
+static d_close_t fuse_device_close;
 static d_poll_t fuse_device_poll;
 static d_read_t fuse_device_read;
 static d_write_t fuse_device_write;
@@ -111,6 +111,7 @@
 static struct cdevsw fuse_device_cdevsw = {
 	.d_kqfilter = fuse_device_filter,
 	.d_open = fuse_device_open,
+	.d_close = fuse_device_close,
 	.d_name = "fuse",
 	.d_poll = fuse_device_poll,
 	.d_read = fuse_device_read,
@@ -269,6 +270,31 @@
 	return (error);
 }
 
+static int
+fuse_device_close(struct cdev *dev, int fflag, int devtype, struct thread *td)
+{
+	struct fuse_data *data;
+	struct mount *mp;
+	int err;
+printf("=======> begin\n");
+	err = devfs_get_cdevpriv((void **)&data);
+	if (err != 0)
+		return (err);
+
+	if (!(data->dataflags & FSESS_AUTO_UNMOUNT))
+		return (0);
+
+	if (fdata_get_dead(data))
+		return (0);
+
+	mp = data->mp;
+
+	printf("=======> before\n");
+	err = VFS_UNMOUNT(mp, MNT_FORCE);
+	printf("=======> after %d\n", err);
+	return (err);
+}
+
 int
 fuse_device_poll(struct cdev *dev, int events, struct thread *td)
 {
diff --git a/sys/fs/fuse/fuse_ipc.h b/sys/fs/fuse/fuse_ipc.h
--- a/sys/fs/fuse/fuse_ipc.h
+++ b/sys/fs/fuse/fuse_ipc.h
@@ -240,9 +240,10 @@
 #define FSESS_WARN_READLINK_EMBEDDED_NUL 0x1000000 /* corrupt READLINK output */
 #define FSESS_WARN_DOT_LOOKUP	  0x2000000 /* Inconsistent . LOOKUP response */
 #define FSESS_WARN_INODE_MISMATCH 0x4000000 /* ino != nodeid */
+#define FSESS_AUTO_UNMOUNT        0x8000000 /* perform unmount when server dies */
 #define FSESS_MNTOPTS_MASK	( \
 	FSESS_DAEMON_CAN_SPY | FSESS_PUSH_SYMLINKS_IN | \
-	FSESS_DEFAULT_PERMISSIONS | FSESS_INTR)
+	FSESS_DEFAULT_PERMISSIONS | FSESS_INTR | FSESS_AUTO_UNMOUNT)
 
 extern int fuse_data_cache_mode;
 
diff --git a/sys/fs/fuse/fuse_vfsops.c b/sys/fs/fuse/fuse_vfsops.c
--- a/sys/fs/fuse/fuse_vfsops.c
+++ b/sys/fs/fuse/fuse_vfsops.c
@@ -337,6 +337,7 @@
 	FUSE_FLAGOPT(push_symlinks_in, FSESS_PUSH_SYMLINKS_IN);
 	FUSE_FLAGOPT(default_permissions, FSESS_DEFAULT_PERMISSIONS);
 	FUSE_FLAGOPT(intr, FSESS_INTR);
+	FUSE_FLAGOPT(auto_unmount, FSESS_AUTO_UNMOUNT);
 
 	(void)vfs_scanopt(opts, "max_read=", "%u", &max_read);
 	(void)vfs_scanopt(opts, "linux_errnos", "%d", &linux_errnos);
@@ -416,6 +417,9 @@
 		FUSE_UNLOCK();
 		goto out;
 	}
+	if (mntopts & FSESS_AUTO_UNMOUNT) {
+		mp->mnt_flag |= MNT_NOCOVER;
+	}
 	data->ref++;
 	data->mp = mp;
 	data->dataflags |= mntopts;