RDS/IB: Use SLAB_HWCACHE_ALIGN flag for kmem_cache_create()

We are *definitely* counting cycles as closely as DaveM, so
ensure hwcache alignment for our recv ring control structs.

Signed-off-by: Andy Grover <andy.grover@oracle.com>

diff --git a/net/rds/ib_recv.c b/net/rds/ib_recv.c
index 9c4208f..37dab28 100644 (file)
--- a/net/rds/ib_recv.c
+++ b/net/rds/ib_recv.c
@@ -1051,13 +1051,13 @@ int __init rds_ib_recv_init(void)
 
        rds_ib_incoming_slab = kmem_cache_create("rds_ib_incoming",
                                        sizeof(struct rds_ib_incoming),
-                                       0, 0, NULL);
+                                       0, SLAB_HWCACHE_ALIGN, NULL);
        if (!rds_ib_incoming_slab)
                goto out;
 
        rds_ib_frag_slab = kmem_cache_create("rds_ib_frag",
                                        sizeof(struct rds_page_frag),
-                                       0, 0, NULL);
+                                       0, SLAB_HWCACHE_ALIGN, NULL);
        if (!rds_ib_frag_slab)
                kmem_cache_destroy(rds_ib_incoming_slab);
        else