oom: move constraints to enum

The OOM killer's CONSTRAINT definitions are really more appropriate in an
enum, so define them in include/linux/oom.h.

Cc: Andrea Arcangeli <andrea@suse.de>
Acked-by: Christoph Lameter <clameter@sgi.com>
Signed-off-by: David Rientjes <rientjes@google.com>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>

1 files changed, 9 insertions, 0 deletions

diff --git a/include/linux/oom.h b/include/linux/oom.h
index b40bb4e32c2f..cf6ebf5b422c 100644
--- a/include/linux/oom.h
+++ b/include/linux/oom.h
@@ -11,6 +11,15 @@
 
 #ifdef __KERNEL__
 
+/*
+ * Types of limitations to the nodes from which allocations may occur
+ */
+enum oom_constraint {
+        CONSTRAINT_NONE,
+        CONSTRAINT_CPUSET,
+        CONSTRAINT_MEMORY_POLICY,
+};
+
 extern void out_of_memory(struct zonelist *zonelist, gfp_t gfp_mask, int order);
 extern int register_oom_notifier(struct notifier_block *nb);
 extern int unregister_oom_notifier(struct notifier_block *nb);