vfs_mountedon
if ((error = vfs_mountedon(devvp)) != 0)
if ((error = vfs_mountedon(devvp)))
(error = vfs_mountedon(bvp)))
if ((error = vfs_mountedon(vp)) != 0)
if ((error = vfs_mountedon(devvp)) != 0)
error = vfs_mountedon(devvp);
int vfs_mountedon(struct vnode *);
if ((error = vfs_mountedon(devvp)) != 0)
if ((error = vfs_mountedon(devvp)) != 0)