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| author | Gowrishankar M <gowrishankar.m@in.ibm.com> | 2009-01-08 03:07:43 +0100 |
|---|---|---|
| committer | Linus Torvalds <torvalds@linux-foundation.org> | 2009-01-08 17:31:03 +0100 |
| commit | e7b80bb695a5b64c92e314838e083b2f3bdf29b2 (patch) | |
| tree | f5eafb9825a23550dbf903e5cabd71655e4e55ce | |
| parent | cgroups: introduce link_css_set() to remove duplicate code (diff) | |
| download | linux-e7b80bb695a5b64c92e314838e083b2f3bdf29b2.tar.xz linux-e7b80bb695a5b64c92e314838e083b2f3bdf29b2.zip | |
cgroups: skip processes from other namespaces when listing a cgroup
Once tasks are populated from system namespace inside cgroup, container
replaces other namespace task with 0 while listing tasks, inside
container.
Though this is expected behaviour from container end, there is no use of
showing unwanted 0s.
In this patch, we check if a process is in same namespace before loading
into pid array.
[akpm@linux-foundation.org: coding-style fixes]
Signed-off-by: Gowrishankar M <gowrishankar.m@in.ibm.com>
Acked-by: Paul Menage <menage@google.com>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
| -rw-r--r-- | kernel/cgroup.c | 6 |
1 files changed, 4 insertions, 2 deletions
diff --git a/kernel/cgroup.c b/kernel/cgroup.c index 4c475ce4e222..cb7c72b91f46 100644 --- a/kernel/cgroup.c +++ b/kernel/cgroup.c @@ -2007,14 +2007,16 @@ int cgroup_scan_tasks(struct cgroup_scanner *scan) */ static int pid_array_load(pid_t *pidarray, int npids, struct cgroup *cgrp) { - int n = 0; + int n = 0, pid; struct cgroup_iter it; struct task_struct *tsk; cgroup_iter_start(cgrp, &it); while ((tsk = cgroup_iter_next(cgrp, &it))) { if (unlikely(n == npids)) break; - pidarray[n++] = task_pid_vnr(tsk); + pid = task_pid_vnr(tsk); + if (pid > 0) + pidarray[n++] = pid; } cgroup_iter_end(cgrp, &it); return n; |