Messages in this thread Patch in this message | | | From | Chen Zhou <> | Subject | [PATCH v2] cgroup-v1: add disabled controller check in cgroup1_parse_param() | Date | Fri, 18 Dec 2020 14:17:55 +0800 |
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When mounting a cgroup hierarchy with disabled controller in cgroup v1, all available controllers will be attached.
Add disabled controller check in cgroup1_parse_param() and return directly if the specified controller is disabled.
Signed-off-by: Chen Zhou <chenzhou10@huawei.com> --- Changes in v2: - Fix line over 80 characters warning. --- kernel/cgroup/cgroup-v1.c | 3 +++ 1 file changed, 3 insertions(+)
diff --git a/kernel/cgroup/cgroup-v1.c b/kernel/cgroup/cgroup-v1.c index 191c329e482a..5190c42fea8b 100644 --- a/kernel/cgroup/cgroup-v1.c +++ b/kernel/cgroup/cgroup-v1.c @@ -915,6 +915,9 @@ int cgroup1_parse_param(struct fs_context *fc, struct fs_parameter *param) for_each_subsys(ss, i) { if (strcmp(param->key, ss->legacy_name)) continue; + if (!cgroup_ssid_enabled(i) || cgroup1_ssid_disabled(i)) + return invalfc(fc, "Disabled controller '%s'", + param->key); ctx->subsys_mask |= (1 << i); return 0; } -- 2.20.1
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