Return-Path: Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S1756887Ab2BAUuo (ORCPT ); Wed, 1 Feb 2012 15:50:44 -0500 Received: from mail-pw0-f46.google.com ([209.85.160.46]:33552 "EHLO mail-pw0-f46.google.com" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1756875Ab2BAUul (ORCPT ); Wed, 1 Feb 2012 15:50:41 -0500 From: Tejun Heo To: axboe@kernel.dk, vgoyal@redhat.com Cc: ctalbott@google.com, rni@google.com, linux-kernel@vger.kernel.org, Tejun Heo Subject: [PATCH 02/16] cfq: don't register propio policy if !CONFIG_CFQ_GROUP_IOSCHED Date: Wed, 1 Feb 2012 12:50:15 -0800 Message-Id: <1328129429-11823-3-git-send-email-tj@kernel.org> X-Mailer: git-send-email 1.7.7.3 In-Reply-To: <1328129429-11823-1-git-send-email-tj@kernel.org> References: <1328129429-11823-1-git-send-email-tj@kernel.org> Sender: linux-kernel-owner@vger.kernel.org List-ID: X-Mailing-List: linux-kernel@vger.kernel.org Content-Length: 1391 Lines: 51 cfq has been registering zeroed blkio_poilcy_cfq if CFQ_GROUP_IOSCHED is disabled. This fortunately doesn't collide with blk-throtl as BLKIO_POLICY_PROP is zero but is unnecessary and risky. Just don't register it if not enabled. Signed-off-by: Tejun Heo Acked-by: Vivek Goyal --- block/cfq-iosched.c | 7 ++++--- 1 files changed, 4 insertions(+), 3 deletions(-) diff --git a/block/cfq-iosched.c b/block/cfq-iosched.c index ee55019..529dfba 100644 --- a/block/cfq-iosched.c +++ b/block/cfq-iosched.c @@ -3884,8 +3884,6 @@ static struct blkio_policy_type blkio_policy_cfq = { }, .plid = BLKIO_POLICY_PROP, }; -#else -static struct blkio_policy_type blkio_policy_cfq; #endif static int __init cfq_init(void) @@ -3916,14 +3914,17 @@ static int __init cfq_init(void) return ret; } +#ifdef CONFIG_CFQ_GROUP_IOSCHED blkio_policy_register(&blkio_policy_cfq); - +#endif return 0; } static void __exit cfq_exit(void) { +#ifdef CONFIG_CFQ_GROUP_IOSCHED blkio_policy_unregister(&blkio_policy_cfq); +#endif elv_unregister(&iosched_cfq); kmem_cache_destroy(cfq_pool); } -- 1.7.7.3 -- To unsubscribe from this list: send the line "unsubscribe linux-kernel" in the body of a message to majordomo@vger.kernel.org More majordomo info at http://vger.kernel.org/majordomo-info.html Please read the FAQ at http://www.tux.org/lkml/