Function mqfs_unmount

freebsd/kern/uipc_mqueue.c:619–627

* Unmount a mqfs instance */

 * Unmount a mqfs instance
 */
static int
mqfs_unmount(struct mount *mp, int mntflags)
{
	int error;

	error = vflush(mp, 0, (mntflags & MNT_FORCE) ?  FORCECLOSE : 0,
	    curthread);
	return (error);
}

/*
 * Return a root vnode