This patch fixes incorrect address range check in do_getname().
Theoretically this can lead to do_getname() failure on kernel
address space string on the TASK_SIZE boundary addresses when
4GB split is ON.

Signed-Off-By: Kirill Korotaev <dev@sw.ru>

Kirill

P.S. These 4GB split patches are against modified 2.6.8.1 kernel, but 
should be appliable to last Fedora kernels