unknown symbol while updating to kernel 2.6.5-1.315 [x86_64]

[Peter Boy]

While updating to kernel-2.6.5-1.315.x86_64.rpm (using rpm -i) I got the
message:

  WARNING: /lib/modules/2.6.5-1.315/unsupported/fs/reiserfs/reiserfs.ko
           needs unknown symbol sleep_on

I don't use reiserfs so I don't have to care about it. It's unsupported
and therefore nobody might care. Did anyone else receive the message?

I could boot the kernel without any problems.


Peter