[ Upstream commit ff29fde84d1fc82f233c7da0daa3574a3942bec7 ] If someone requests fscache on the mount, and the kernel doesn't support it, it should fail the mount. [ Drop ceph prefix -- it's provided by pr_err. ] Signed-off-by: Jeff Layton <jlayton@kernel.org> Reviewed-by: Ilya Dryomov <idryomov@gmail.com> Signed-off-by: Ilya Dryomov <idryomov@gmail.com> Signed-off-by: Sasha Levin <sashal@kernel.org>