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| author | Tejun Heo <tj@kernel.org> | 2012-11-22 15:32:46 (GMT) |
|---|---|---|
| committer | Tejun Heo <tj@kernel.org> | 2012-11-22 15:32:46 (GMT) |
| commit | 0ba18f7a5e268e095f79e32b7b47e8ce4fbabbe2 (patch) | |
| tree | 43bd8423515aeb6671c3b80ea3be3f07773d3c19 /net/sched | |
| parent | d0b2fdd2a51203f04ea0a5d716e033c15e0231af (diff) | |
| download | linux-0ba18f7a5e268e095f79e32b7b47e8ce4fbabbe2.tar.xz | |
netcls_cgroup: move config inheritance to ->css_online() and remove .broken_hierarchy marking
It turns out that we'll have to live with attributes which are
inherited at cgroup creation time but not affected by further updates
to the parent afterwards - such attributes are already in wide use
e.g. for cpuset.
So, there's nothing to do for netcls_cgroup for hierarchy support.
Its current behavior - inherit only during creation - is good enough.
Move config inheriting from ->css_alloc() to ->css_online() for
consistency, which doesn't change behavior at all, and remove
.broken_hierarchy marking.
Signed-off-by: Tejun Heo <tj@kernel.org>
Tested-and-Acked-by: Daniel Wagner <daniel.wagner@bmw-carit.de>
Acked-by: David S. Miller <davem@davemloft.net>
Diffstat (limited to 'net/sched')
| -rw-r--r-- | net/sched/cls_cgroup.c | 20 |
1 files changed, 8 insertions, 12 deletions
diff --git a/net/sched/cls_cgroup.c b/net/sched/cls_cgroup.c index 8cdc18e..31f06b6 100644 --- a/net/sched/cls_cgroup.c +++ b/net/sched/cls_cgroup.c @@ -41,11 +41,15 @@ static struct cgroup_subsys_state *cgrp_css_alloc(struct cgroup *cgrp) cs = kzalloc(sizeof(*cs), GFP_KERNEL); if (!cs) return ERR_PTR(-ENOMEM); + return &cs->css; +} +static int cgrp_css_online(struct cgroup *cgrp) +{ if (cgrp->parent) - cs->classid = cgrp_cls_state(cgrp->parent)->classid; - - return &cs->css; + cgrp_cls_state(cgrp)->classid = + cgrp_cls_state(cgrp->parent)->classid; + return 0; } static void cgrp_css_free(struct cgroup *cgrp) @@ -76,19 +80,11 @@ static struct cftype ss_files[] = { struct cgroup_subsys net_cls_subsys = { .name = "net_cls", .css_alloc = cgrp_css_alloc, + .css_online = cgrp_css_online, .css_free = cgrp_css_free, .subsys_id = net_cls_subsys_id, .base_cftypes = ss_files, .module = THIS_MODULE, - - /* - * While net_cls cgroup has the rudimentary hierarchy support of - * inheriting the parent's classid on cgroup creation, it doesn't - * properly propagates config changes in ancestors to their - * descendents. A child should follow the parent's configuration - * but be allowed to override it. Fix it and remove the following. - */ - .broken_hierarchy = true, }; struct cls_cgroup_head { |