From: Roman Gushchin <guroan@gmail.com>
To: Tejun Heo <tj@kernel.org>, Oleg Nesterov <oleg@redhat.com>
Cc: kernel-team@fb.com, cgroups@vger.kernel.org,
linux-kernel@vger.kernel.org, Roman Gushchin <guro@fb.com>,
Shuah Khan <shuah@kernel.org>,
linux-kselftest@vger.kernel.org
Subject: [PATCH v6 5/7] kselftests: cgroup: don't fail on cg_kill_all() error in cg_destroy()
Date: Fri, 21 Dec 2018 16:03:05 -0800 [thread overview]
Message-ID: <20181222000307.28231-6-guro@fb.com> (raw)
In-Reply-To: <20181222000307.28231-1-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;
}
--
2.19.2
next prev parent reply other threads:[~2018-12-22 0:03 UTC|newest]
Thread overview: 17+ messages / expand[flat|nested] mbox.gz Atom feed top
2018-12-22 0:03 [PATCH v6 0/7] freezer for cgroup v2 Roman Gushchin
2018-12-22 0:03 ` [PATCH v6 1/7] cgroup: rename freezer.c into legacy_freezer.c Roman Gushchin
2018-12-22 0:03 ` [PATCH v6 2/7] cgroup: implement __cgroup_task_count() helper Roman Gushchin
2018-12-22 0:03 ` [PATCH v6 3/7] cgroup: protect cgroup->nr_(dying_)descendants by css_set_lock Roman Gushchin
2018-12-22 0:03 ` [PATCH v6 4/7] cgroup: cgroup v2 freezer Roman Gushchin
2019-01-25 12:27 ` Oleg Nesterov
2019-01-25 13:46 ` Oleg Nesterov
2019-01-28 19:59 ` Roman Gushchin
2019-01-30 16:52 ` Oleg Nesterov
2019-02-11 21:30 ` Roman Gushchin
2019-02-14 16:26 ` Oleg Nesterov
2019-02-14 16:41 ` Roman Gushchin
2019-01-25 13:43 ` Oleg Nesterov
2018-12-22 0:03 ` Roman Gushchin [this message]
2018-12-22 0:03 ` [PATCH v6 6/7] kselftests: cgroup: add freezer controller self-tests Roman Gushchin
2018-12-22 0:03 ` [PATCH v6 7/7] cgroup: document cgroup v2 freezer interface Roman Gushchin
2019-01-24 15:26 ` [PATCH v6 0/7] freezer for cgroup v2 Tejun Heo
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