From mboxrd@z Thu Jan 1 00:00:00 1970 Return-Path: Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S933283Ab2C1W4J (ORCPT ); Wed, 28 Mar 2012 18:56:09 -0400 Received: from mail-pb0-f46.google.com ([209.85.160.46]:44424 "EHLO mail-pb0-f46.google.com" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1758961Ab2C1Wvr (ORCPT ); Wed, 28 Mar 2012 18:51:47 -0400 From: Tejun Heo To: axboe@kernel.dk Cc: vgoyal@redhat.com, ctalbott@google.com, rni@google.com, linux-kernel@vger.kernel.org, cgroups@vger.kernel.org, containers@lists.linux-foundation.org, Tejun Heo Subject: [PATCH 05/21] blkcg: drop blkiocg_file_write_u64() Date: Wed, 28 Mar 2012 15:51:15 -0700 Message-Id: <1332975091-10950-6-git-send-email-tj@kernel.org> X-Mailer: git-send-email 1.7.7.3 In-Reply-To: <1332975091-10950-1-git-send-email-tj@kernel.org> References: <1332975091-10950-1-git-send-email-tj@kernel.org> Sender: linux-kernel-owner@vger.kernel.org List-ID: X-Mailing-List: linux-kernel@vger.kernel.org blkiocg_file_write_u64() has single switch case. Drop blkiocg_file_write_u64(), rename blkio_weight_write() to blkcg_set_weight() and use it directly for .write_u64 callback. Signed-off-by: Tejun Heo --- block/blk-cgroup.c | 35 +++++++---------------------------- 1 files changed, 7 insertions(+), 28 deletions(-) diff --git a/block/blk-cgroup.c b/block/blk-cgroup.c index f670217..ae539d3 100644 --- a/block/blk-cgroup.c +++ b/block/blk-cgroup.c @@ -1207,8 +1207,9 @@ static int blkiocg_file_read(struct cgroup *cgrp, struct cftype *cft, return 0; } -static int blkio_weight_write(struct blkio_cgroup *blkcg, int plid, u64 val) +static int blkcg_set_weight(struct cgroup *cgrp, struct cftype *cft, u64 val) { + struct blkio_cgroup *blkcg = cgroup_to_blkio_cgroup(cgrp); struct blkio_group *blkg; struct hlist_node *n; @@ -1220,10 +1221,11 @@ static int blkio_weight_write(struct blkio_cgroup *blkcg, int plid, u64 val) blkcg->weight = (unsigned int)val; hlist_for_each_entry(blkg, n, &blkcg->blkg_list, blkcg_node) { - struct blkg_policy_data *pd = blkg->pd[plid]; + struct blkg_policy_data *pd = blkg->pd[BLKIO_POLICY_PROP]; - if (!pd->conf.weight) - blkio_update_group_weight(blkg, plid, blkcg->weight); + if (pd && !pd->conf.weight) + blkio_update_group_weight(blkg, BLKIO_POLICY_PROP, + blkcg->weight); } spin_unlock_irq(&blkcg->lock); @@ -1251,29 +1253,6 @@ static u64 blkiocg_file_read_u64 (struct cgroup *cgrp, struct cftype *cft) { return 0; } -static int -blkiocg_file_write_u64(struct cgroup *cgrp, struct cftype *cft, u64 val) -{ - struct blkio_cgroup *blkcg; - enum blkio_policy_id plid = BLKIOFILE_POLICY(cft->private); - int name = BLKIOFILE_ATTR(cft->private); - - blkcg = cgroup_to_blkio_cgroup(cgrp); - - switch(plid) { - case BLKIO_POLICY_PROP: - switch(name) { - case BLKIO_PROP_weight: - return blkio_weight_write(blkcg, plid, val); - } - break; - default: - BUG(); - } - - return 0; -} - struct cftype blkio_files[] = { { .name = "weight_device", @@ -1288,7 +1267,7 @@ struct cftype blkio_files[] = { .private = BLKIOFILE_PRIVATE(BLKIO_POLICY_PROP, BLKIO_PROP_weight), .read_u64 = blkiocg_file_read_u64, - .write_u64 = blkiocg_file_write_u64, + .write_u64 = blkcg_set_weight, }, { .name = "time", -- 1.7.7.3