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user namespaces: document CFS behavior

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Documented the currently bogus state of support for CFS user groups with
user namespaces.  In particular, all users in a user namespace should be
children of the user which created the user namespace.  This is yet to
be implemented.

Signed-off-by: Serge E. Hallyn <serue@us.ibm.com>
Acked-by: Dhaval Giani <dhaval@linux.vnet.ibm.com>

Signed-off-by: Serge E. Hallyn <serue@us.ibm.com>
Signed-off-by: James Morris <jmorris@namei.org>
This commit is contained in:
Serge E. Hallyn 2008-12-08 15:52:21 -06:00 • committed by James Morris
parent 7657d90497
commit 94d6a5f734
2 changed files with 28 additions and 1 deletions
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8
kernel/user.c
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@ -239,7 +239,13 @@ static struct kobj_type uids_ktype = {
.release = uids_release,
};
/* create /sys/kernel/uids/<uid>/cpu_share file for this user */
/*
* Create /sys/kernel/uids/<uid>/cpu_share file for this user
* We do not create this file for users in a user namespace (until
* sysfs tagging is implemented).
*
* See Documentation/scheduler/sched-design-CFS.txt for ramifications.
*/
static int uids_user_create(struct user_struct *up)
{
struct kobject *kobj = &up->kobj;