linux-kernel - [PATCH 1/6] cgroup: fix error return value of cgroup_addrm

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Date:	Mon, 22 Feb 2016 18:05:44 -0500
From:	Tejun Heo <tj@...nel.org>
To:	lizefan@...wei.com, hannes@...xchg.org
Cc:	cgroups@...r.kernel.org, linux-kernel@...r.kernel.org,
	kernel-team@...com, Tejun Heo <tj@...nel.org>
Subject: [PATCH 1/6] cgroup: fix error return value of cgroup_addrm_files()

cgroup_addrm_files() incorrectly returned 0 after add failure.  Fix
it.

Signed-off-by: Tejun Heo <tj@...nel.org>
---
 kernel/cgroup.c | 4 ++--
 1 file changed, 2 insertions(+), 2 deletions(-)

diff --git a/kernel/cgroup.c b/kernel/cgroup.c
index 7ad6191..68b032d 100644
--- a/kernel/cgroup.c
+++ b/kernel/cgroup.c
@@ -3369,7 +3369,7 @@ static int cgroup_addrm_files(struct cgroup_subsys_state *css,
 			      bool is_add)
 {
 	struct cftype *cft, *cft_end = NULL;
-	int ret;
+	int ret = 0;
 
 	lockdep_assert_held(&cgroup_mutex);
 
@@ -3398,7 +3398,7 @@ static int cgroup_addrm_files(struct cgroup_subsys_state *css,
 			cgroup_rm_file(cgrp, cft);
 		}
 	}
-	return 0;
+	return ret;
 }
 
 static int cgroup_apply_cftypes(struct cftype *cfts, bool is_add)
-- 
2.5.0