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authorCedric Le Goater <clg@fr.ibm.com>2008-05-23 13:05:02 -0700
committerLinus Torvalds <torvalds@linux-foundation.org>2008-05-24 09:56:14 -0700
commit5c02b575780d0d785815a1e7b79a98edddee895a (patch)
treed77562541d5bdf30c19219f0af0db59162359963
parent12d15f0d51d47cec39d1d7250e81573c5cbd8b5d (diff)
cgroups: remove node_ prefix_from ns subsystem
This is a slight change in the namespace cgroup subsystem api. The change is that previously when cgroup_clone() was called (currently only from the unshare path in ns_proxy cgroup, you'd get a new group named "node_$pid" whereas now you'll get a group named after just your pid.) The only users who would notice it are those who are using the ns_proxy cgroup subsystem to auto-create cgroups when namespaces are unshared - something of an experimental feature, which I think really needs more complete container/namespace support in order to be useful. I suspect the only users are Cedric and Serge, or maybe a few others on containers@lists.linux-foundation.org. And in fact it would only be noticed by the users who make the assumption about how the name is generated, rather than getting it from the /proc/<pid>/cgroups file for the process in question. Whether the change is actually needed or not I'm fairly agnostic on, but I guess it is more elegant to just use the pid as the new group name rather than adding a fairly arbitrary "node_" prefix on the front. [menage@google.com: provided changelog] Signed-off-by: Cedric Le Goater <clg@fr.ibm.com> Cc: "Paul Menage" <menage@google.com> Cc: "Serge E. Hallyn" <serue@us.ibm.com> Cc: <stable@kernel.org> Signed-off-by: Andrew Morton <akpm@linux-foundation.org> Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
-rw-r--r--kernel/cgroup.c2
1 files changed, 1 insertions, 1 deletions
diff --git a/kernel/cgroup.c b/kernel/cgroup.c
index fbc6fc8949b..15ac0e1e4f4 100644
--- a/kernel/cgroup.c
+++ b/kernel/cgroup.c
@@ -2903,7 +2903,7 @@ int cgroup_clone(struct task_struct *tsk, struct cgroup_subsys *subsys)
cg = tsk->cgroups;
parent = task_cgroup(tsk, subsys->subsys_id);
- snprintf(nodename, MAX_CGROUP_TYPE_NAMELEN, "node_%d", tsk->pid);
+ snprintf(nodename, MAX_CGROUP_TYPE_NAMELEN, "%d", tsk->pid);
/* Pin the hierarchy */
atomic_inc(&parent->root->sb->s_active);