pci_map_single() and pci_unmap_single() pair

From: tcs (dzshen_at_winbond.com.tw)
Date: 04/30/04 

Date: Fri, 30 Apr 2004 10:03:18 +0800

Greetings:
  I am maintaing a SCSI device driver and there are some weird behaviors.
The longer the driver is running, the slower it is, I doubt there is memory
leak problem.

  Here is the question:
  What if we use pci_map_single() but in some cases we forget to call
pci_unmap_single(), what's the obviously external behavior?

thanks

tcs