[TCP]: Don't use highmem in tcp hash size calculation.

This patch removes consideration of high memory when determining TCP
hash table sizes.  Taking into account high memory results in tcp_mem
values that are too large.

Signed-off-by: John Heffner <jheffner@psc.edu>
Signed-off-by: David S. Miller <davem@davemloft.net>
diff --git a/net/ipv4/tcp.c b/net/ipv4/tcp.c
index 66e9a72..4322318 100644
--- a/net/ipv4/tcp.c
+++ b/net/ipv4/tcp.c
@@ -2270,7 +2270,7 @@
 					thash_entries,
 					(num_physpages >= 128 * 1024) ?
 					13 : 15,
-					HASH_HIGHMEM,
+					0,
 					&tcp_hashinfo.ehash_size,
 					NULL,
 					0);
@@ -2286,7 +2286,7 @@
 					tcp_hashinfo.ehash_size,
 					(num_physpages >= 128 * 1024) ?
 					13 : 15,
-					HASH_HIGHMEM,
+					0,
 					&tcp_hashinfo.bhash_size,
 					NULL,
 					64 * 1024);