I'm not seeing which part of the Linux kernel is afflicted, but this exhibit from an Amazon case at least suggests that it is for the route cache. http://docs.

I'm not seeing which part of the Linux kernel is afflicted, but this exhibit from an Amazon case at least suggests that it is for the route cache. http://docs.justia.com/cases/federal/district-courts/texas/txedce/6:2009cv00269/116887/579/5.pdf http://docs.justia.com/cases/federal/district-courts/texas/t... If so, it should be easy to excise from future kernels with minimal performance impact. (I was suspecting filesystem entry caches, but that doesn't show up when I google.) In a perfect world the patent would not have been issued since it is obvious to anyone skilled in the art that considers when to purge expired entries from a hash table with linked list overflow, especially in a world where systems are constrained by memory access times more than computation. But we are not legislated by that world.