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.

(akpm: I don't see why this check exists at all, actually.  afaict the only
effect of removing it is that we'll then generate -EFAULT on a
non-null-terminated pathname which ends exactly at TASK_SIZE).
Signed-Off-By: Kirill Korotaev <dev@sw.ru>
Signed-off-by: Andrew Morton <akpm@osdl.org>
Signed-off-by: Linus Torvalds <torvalds@osdl.org>