Messages in this thread Patch in this message | | | Date | Tue, 29 Jan 2008 16:52:25 +0300 | From | Pavel Emelyanov <> | Subject | [PATCH 5/12] Handle pid namespaces in cgroups code |
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There's one place that works with task pids - its the "tasks" file in cgroups. The read/write handlers assume, that the pid values go to/come from the user space and thus it is a virtual pid, i.e. the pid as it is seen from inside a namespace.
Tune the code accordingly.
Signed-off-by: Pavel Emelyanov <xemul@openvz.org>
--- kernel/cgroup.c | 4 ++-- 1 files changed, 2 insertions(+), 2 deletions(-)
diff --git a/kernel/cgroup.c b/kernel/cgroup.c index 2c5cccb..4766bb6 100644 --- a/kernel/cgroup.c +++ b/kernel/cgroup.c @@ -1269,7 +1269,7 @@ static int attach_task_by_pid(struct cgroup *cgrp, char *pidbuf) if (pid) { rcu_read_lock(); - tsk = find_task_by_pid(pid); + tsk = find_task_by_vpid(pid); if (!tsk || tsk->flags & PF_EXITING) { rcu_read_unlock(); return -ESRCH; @@ -1955,7 +1955,7 @@ static int pid_array_load(pid_t *pidarray, int npids, struct cgroup *cgrp) while ((tsk = cgroup_iter_next(cgrp, &it))) { if (unlikely(n == npids)) break; - pidarray[n++] = task_pid_nr(tsk); + pidarray[n++] = task_pid_vnr(tsk); } cgroup_iter_end(cgrp, &it); return n; -- 1.5.3.4
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