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-rw-r--r--mm/internal.h12
1 files changed, 12 insertions, 0 deletions
diff --git a/mm/internal.h b/mm/internal.h
index 4ef49fc55e58..1df011f62480 100644
--- a/mm/internal.h
+++ b/mm/internal.h
@@ -480,6 +480,17 @@ unsigned long reclaim_clean_pages_from_list(struct zone *zone,
/* Mask to get the watermark bits */
#define ALLOC_WMARK_MASK (ALLOC_NO_WATERMARKS-1)
+/*
+ * Only MMU archs have async oom victim reclaim - aka oom_reaper so we
+ * cannot assume a reduced access to memory reserves is sufficient for
+ * !MMU
+ */
+#ifdef CONFIG_MMU
+#define ALLOC_OOM 0x08
+#else
+#define ALLOC_OOM ALLOC_NO_WATERMARKS
+#endif
+
#define ALLOC_HARDER 0x10 /* try to alloc harder */
#define ALLOC_HIGH 0x20 /* __GFP_HIGH set */
#define ALLOC_CPUSET 0x40 /* check for correct cpuset */
@@ -525,4 +536,5 @@ static inline bool is_migrate_highatomic_page(struct page *page)
return get_pageblock_migratetype(page) == MIGRATE_HIGHATOMIC;
}
+void setup_zone_pageset(struct zone *zone);
#endif /* __MM_INTERNAL_H */