(2013/04/08 15:34), Li Zefan wrote: > Use css_get/put instead of mem_cgroup_get/put. > > We can't do a simple replacement, because here mem_cgroup_put() > is called during mem_cgroup_css_free(), while mem_cgroup_css_free() > won't be called until css refcnt goes down to 0. > > Instead we increment css refcnt in mem_cgroup_css_offline(), and > then check if there's still kmem charges. If not, css refcnt will > be decremented immediately, otherwise the refcnt won't be decremented > when kmem charges goes down to 0. > > v2: > - added wmb() in kmem_cgroup_css_offline(), pointed out by Michal > - revised comments as suggested by Michal > - fixed to check if kmem is activated in kmem_cgroup_css_offline() > > Signed-off-by: Li Zefan <lize...@huawei.com>
Acked-by: KAMEZAWA Hiroyuki <kamezawa.hir...@jp.fujitsu.com> -- To unsubscribe from this list: send the line "unsubscribe linux-kernel" in the body of a message to majord...@vger.kernel.org More majordomo info at http://vger.kernel.org/majordomo-info.html Please read the FAQ at http://www.tux.org/lkml/
