Return-Path: Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S1751477Ab2JaEXO (ORCPT ); Wed, 31 Oct 2012 00:23:14 -0400 Received: from mail-pa0-f46.google.com ([209.85.220.46]:35071 "EHLO mail-pa0-f46.google.com" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1751006Ab2JaEXK (ORCPT ); Wed, 31 Oct 2012 00:23:10 -0400 From: Tejun Heo To: lizefan@huawei.com, hannes@cmpxchg.org, mhocko@suse.cz, bsingharora@gmail.com, kamezawa.hiroyu@jp.fujitsu.com Cc: containers@lists.linux-foundation.org, cgroups@vger.kernel.org, linux-kernel@vger.kernel.org, Tejun Heo , Vivek Goyal Subject: [PATCH 8/8] cgroup: make ->pre_destroy() return void Date: Tue, 30 Oct 2012 21:22:45 -0700 Message-Id: <1351657365-25055-9-git-send-email-tj@kernel.org> X-Mailer: git-send-email 1.7.11.7 In-Reply-To: <1351657365-25055-1-git-send-email-tj@kernel.org> References: <1351657365-25055-1-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: 3517 Lines: 111 All ->pre_destory() implementations return 0 now, which is the only allowed return value. Make it return void. Signed-off-by: Tejun Heo Cc: Michal Hocko Cc: Balbir Singh Cc: KAMEZAWA Hiroyuki Cc: Vivek Goyal --- block/blk-cgroup.c | 3 +-- include/linux/cgroup.h | 2 +- kernel/cgroup.c | 2 +- mm/hugetlb_cgroup.c | 4 +--- mm/memcontrol.c | 3 +-- 5 files changed, 5 insertions(+), 9 deletions(-) diff --git a/block/blk-cgroup.c b/block/blk-cgroup.c index f3b44a6..a7816f3 100644 --- a/block/blk-cgroup.c +++ b/block/blk-cgroup.c @@ -600,7 +600,7 @@ struct cftype blkcg_files[] = { * * This is the blkcg counterpart of ioc_release_fn(). */ -static int blkcg_pre_destroy(struct cgroup *cgroup) +static void blkcg_pre_destroy(struct cgroup *cgroup) { struct blkcg *blkcg = cgroup_to_blkcg(cgroup); @@ -622,7 +622,6 @@ static int blkcg_pre_destroy(struct cgroup *cgroup) } spin_unlock_irq(&blkcg->lock); - return 0; } static void blkcg_destroy(struct cgroup *cgroup) diff --git a/include/linux/cgroup.h b/include/linux/cgroup.h index 47868a8..adb2adc 100644 --- a/include/linux/cgroup.h +++ b/include/linux/cgroup.h @@ -436,7 +436,7 @@ int cgroup_taskset_size(struct cgroup_taskset *tset); struct cgroup_subsys { struct cgroup_subsys_state *(*create)(struct cgroup *cgrp); - int (*pre_destroy)(struct cgroup *cgrp); + void (*pre_destroy)(struct cgroup *cgrp); void (*destroy)(struct cgroup *cgrp); int (*can_attach)(struct cgroup *cgrp, struct cgroup_taskset *tset); void (*cancel_attach)(struct cgroup *cgrp, struct cgroup_taskset *tset); diff --git a/kernel/cgroup.c b/kernel/cgroup.c index c5f6fb2..83cd7d0 100644 --- a/kernel/cgroup.c +++ b/kernel/cgroup.c @@ -4054,7 +4054,7 @@ static int cgroup_rmdir(struct inode *unused_dir, struct dentry *dentry) mutex_unlock(&cgroup_mutex); for_each_subsys(cgrp->root, ss) if (ss->pre_destroy) - WARN_ON_ONCE(ss->pre_destroy(cgrp)); + ss->pre_destroy(cgrp); mutex_lock(&cgroup_mutex); /* diff --git a/mm/hugetlb_cgroup.c b/mm/hugetlb_cgroup.c index dc595c6..0d3a1a3 100644 --- a/mm/hugetlb_cgroup.c +++ b/mm/hugetlb_cgroup.c @@ -155,7 +155,7 @@ out: * Force the hugetlb cgroup to empty the hugetlb resources by moving them to * the parent cgroup. */ -static int hugetlb_cgroup_pre_destroy(struct cgroup *cgroup) +static void hugetlb_cgroup_pre_destroy(struct cgroup *cgroup) { struct hstate *h; struct page *page; @@ -172,8 +172,6 @@ static int hugetlb_cgroup_pre_destroy(struct cgroup *cgroup) } cond_resched(); } while (hugetlb_cgroup_have_usage(cgroup)); - - return 0; } int hugetlb_cgroup_charge_cgroup(int idx, unsigned long nr_pages, diff --git a/mm/memcontrol.c b/mm/memcontrol.c index 47c4680..af05a60 100644 --- a/mm/memcontrol.c +++ b/mm/memcontrol.c @@ -5002,12 +5002,11 @@ free_out: return ERR_PTR(error); } -static int mem_cgroup_pre_destroy(struct cgroup *cont) +static void mem_cgroup_pre_destroy(struct cgroup *cont) { struct mem_cgroup *memcg = mem_cgroup_from_cont(cont); mem_cgroup_reparent_charges(memcg); - return 0; } static void mem_cgroup_destroy(struct cgroup *cont) -- 1.7.11.7 -- 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/