[PATCH 02/33] task containersv11 basic task container framework fix

Handle reading /proc/self/cpuset when cpusets isn't mounted.

Signed-off-by: Paul Menage <[email protected]>

---

 kernel/cgroup.c |    9 +++++++++
 1 file changed, 9 insertions(+)

diff -puN kernel/cgroup.c~task-cgroupsv11-basic-task-cgroup-framework-fix kernel/cgroup.c
--- a/kernel/cgroup.c~task-cgroupsv11-basic-task-cgroup-framework-fix
+++ a/kernel/cgroup.c
@@ -683,6 +683,15 @@ int cgroup_path(const struct containe
 {
 	char *start;
 
+	if (cont == dummytop) {
+		/*
+		 * Inactive subsystems have no dentry for their root
+		 * cgroup
+		 */
+		strcpy(buf, "/");
+		return 0;
+	}
+
 	start = buf + buflen;
 
 	*--start = '\0';
_

--
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---

• References:
  • [PATCH 00/33] Rename "Task Containers" to "Control Groups"
    • From: Paul Menage <[email protected]>

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