From mboxrd@z Thu Jan 1 00:00:00 1970 From: Roman Gushchin Subject: [PATCH v9 5/9] kselftests: cgroup: don't fail on cg_kill_all() error in cg_destroy() Date: Sat, 16 Mar 2019 10:58:08 -0700 Message-ID: <20190316175812.6787-6-guro@fb.com> References: <20190316175812.6787-1-guro@fb.com> Mime-Version: 1.0 Content-Transfer-Encoding: 8bit Return-path: DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=gmail.com; s=20161025; h=from:to:cc:subject:date:message-id:in-reply-to:references :mime-version:content-transfer-encoding; bh=EXXdq7GrYAICjYexP9jF/A5d/mueQ96ws92MW4tT5O4=; b=F6A697S/ffgJNB8KpLbzzjE1ufFH+GzS0i5kboYL5MTAgRfj3I850Ka+KDnEYqSflF fa8ZyZQg9sxQ+hoKvqeIp0j2j7cVXz2r0cLHumV6M+AJZxpN/KNQKSwgr/Jo4hLqD6ok h1CupS8vXwP4Ok8CjXPQrgw60GKElSpuhfrvp2jJ6li9Urea3VCiz+SMoXPk7TEFqdhm sLcJzRm6gv4dKSRm79nuXL24mtMmlk/7c2wyZxIGeUU2FcggGH3Vrg70mrY9eOHKIFyM L32M2k9DAy6ftffLYNK9vT7/67Uh5h7uytamW4n9IcgamOaZjGky1OUg0ZaKpT+IzS6r Yg9Q== In-Reply-To: <20190316175812.6787-1-guro@fb.com> Sender: linux-kernel-owner@vger.kernel.org List-ID: Content-Type: text/plain; charset="us-ascii" To: Tejun Heo , Oleg Nesterov Cc: Roman Gushchin , kernel-team@fb.com, cgroups@vger.kernel.org, linux-kernel@vger.kernel.org, Shuah Khan , linux-kselftest@vger.kernel.org If the cgroup destruction races with an exit() of a belonging process(es), cg_kill_all() may fail. It's not a good reason to make cg_destroy() fail and leave the cgroup in place, potentially causing next test runs to fail. Signed-off-by: Roman Gushchin Cc: Shuah Khan Cc: Tejun Heo Cc: kernel-team@fb.com Cc: linux-kselftest@vger.kernel.org --- tools/testing/selftests/cgroup/cgroup_util.c | 4 +--- 1 file changed, 1 insertion(+), 3 deletions(-) diff --git a/tools/testing/selftests/cgroup/cgroup_util.c b/tools/testing/selftests/cgroup/cgroup_util.c index 14c9fe284806..eba06f94433b 100644 --- a/tools/testing/selftests/cgroup/cgroup_util.c +++ b/tools/testing/selftests/cgroup/cgroup_util.c @@ -227,9 +227,7 @@ int cg_destroy(const char *cgroup) retry: ret = rmdir(cgroup); if (ret && errno == EBUSY) { - ret = cg_killall(cgroup); - if (ret) - return ret; + cg_killall(cgroup); usleep(100); goto retry; } -- 2.20.1