On Mon, 25 Jun 2012 18:15:26 +0400
Glauber Costa [off-list ref] wrote:
quoted hunk ↗ jump to hunk
--- a/mm/memcontrol.c
+++ b/mm/memcontrol.c
@@ -287,7 +287,11 @@ struct mem_cgroup {
* Should the accounting and control be hierarchical, per subtree?
*/
bool use_hierarchy;
- bool kmem_accounted;
+ /*
+ * bit0: accounted by this cgroup
+ * bit1: accounted by a parent.
+ */
+ volatile unsigned long kmem_accounted;
I suggest
unsigned long kmem_accounted; /* See KMEM_ACCOUNTED_*, below */
quoted hunk ↗ jump to hunk
bool oom_lock;
atomic_t under_oom;
@@ -340,6 +344,9 @@ struct mem_cgroup {
#endif
};
+#define KMEM_ACCOUNTED_THIS 0
+#define KMEM_ACCOUNTED_PARENT 1
And then document the fields here.
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