From: Roman Gushchin <guroan@gmail.com>
To: Tejun Heo <tj@kernel.org>, Oleg Nesterov <oleg@redhat.com>
Cc: Dan Carpenter <dan.carpenter@oracle.com>,
Mike Rapoport <rppt@linux.vnet.ibm.com>,
cgroups@vger.kernel.org, linux-doc@vger.kernel.org,
linux-kernel@vger.kernel.org, kernel-team@fb.com,
Roman Gushchin <guro@fb.com>, Shuah Khan <shuah@kernel.org>,
linux-kselftest@vger.kernel.org
Subject: [PATCH v5 5/7] kselftests: cgroup: don't fail on cg_kill_all() error in cg_destroy()
Date: Fri, 7 Dec 2018 12:15:29 -0800 [thread overview]
Message-ID: <20181207201531.1665-6-guro@fb.com> (raw)
In-Reply-To: <20181207201531.1665-1-guro@fb.com>
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 <guro@fb.com>
Cc: Shuah Khan <shuah@kernel.org>
Cc: Tejun Heo <tj@kernel.org>
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;
}
--
2.17.2
next prev parent reply other threads:[~2018-12-07 20:15 UTC|newest]
Thread overview: 16+ messages / expand[flat|nested] mbox.gz Atom feed top
2018-12-07 20:15 [PATCH v5 0/7] freezer for cgroup v2 Roman Gushchin
2018-12-07 20:15 ` [PATCH v5 1/7] cgroup: rename freezer.c into legacy_freezer.c Roman Gushchin
2018-12-07 20:15 ` [PATCH v5 2/7] cgroup: implement __cgroup_task_count() helper Roman Gushchin
2018-12-07 20:15 ` [PATCH v5 3/7] cgroup: protect cgroup->nr_(dying_)descendants by css_set_lock Roman Gushchin
2018-12-07 20:15 ` [PATCH v5 4/7] cgroup: cgroup v2 freezer Roman Gushchin
2018-12-11 16:26 ` Oleg Nesterov
2018-12-11 18:40 ` Roman Gushchin
2018-12-12 17:49 ` Oleg Nesterov
2018-12-18 1:28 ` Roman Gushchin
2018-12-18 17:12 ` Oleg Nesterov
2018-12-18 20:27 ` Roman Gushchin
2018-12-20 16:16 ` Oleg Nesterov
2018-12-20 21:43 ` Roman Gushchin
2018-12-07 20:15 ` Roman Gushchin [this message]
2018-12-07 20:15 ` [PATCH v5 6/7] kselftests: cgroup: add freezer controller self-tests Roman Gushchin
2018-12-07 20:15 ` [PATCH v5 7/7] cgroup: document cgroup v2 freezer interface Roman Gushchin
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