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Subject[PATCH 21/24] cgroup: define empty css_put() when !CONFIG_CGROUPS
It will be used by the hwpoison inject code for releasing the
css grabbed by try_get_mem_cgroup_from_page().

CC: Balbir Singh <balbir@linux.vnet.ibm.com>
CC: KAMEZAWA Hiroyuki <kamezawa.hiroyu@jp.fujitsu.com>
CC: Li Zefan <lizf@cn.fujitsu.com>
CC: Paul Menage <menage@google.com>
Signed-off-by: Wu Fengguang <fengguang.wu@intel.com>
---
include/linux/cgroup.h | 3 +++
1 file changed, 3 insertions(+)
--- linux-mm.orig/include/linux/cgroup.h 2009-11-02 10:18:41.000000000 +0800
+++ linux-mm/include/linux/cgroup.h 2009-11-02 10:26:22.000000000 +0800
@@ -581,6 +581,9 @@ static inline int cgroupstats_build(stru
return -EINVAL;
}

+struct cgroup_subsys_state;
+static inline void css_put(struct cgroup_subsys_state *css) {}
+
#endif /* !CONFIG_CGROUPS */

#endif /* _LINUX_CGROUP_H */



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