[PATCH 1,2/4 v3] slub: use __cmpxchg_double_slab() at interrupt disabled place

[Joonsoo Kim]

get_freelist(), unfreeze_partials() are only called with interrupt disabled,
so __cmpxchg_double_slab() is suitable.

Acked-by: Christoph Lameter <cl@xxxxxxxxx>
Signed-off-by: Joonsoo Kim <js1304@xxxxxxxxx>

diff --git a/mm/slub.c b/mm/slub.c
index 0c3105c..c38efce 100644
--- a/mm/slub.c
+++ b/mm/slub.c
@@ -1935,7 +1935,7 @@ static void unfreeze_partials(struct kmem_cache *s)
 				l = m;
 			}
 
-		} while (!cmpxchg_double_slab(s, page,
+		} while (!__cmpxchg_double_slab(s, page,
 				old.freelist, old.counters,
 				new.freelist, new.counters,
 				"unfreezing slab"));
@@ -2179,7 +2179,7 @@ static inline void *get_freelist(struct kmem_cache *s, struct page *page)
 		new.inuse = page->objects;
 		new.frozen = freelist != NULL;
 
-	} while (!cmpxchg_double_slab(s, page,
+	} while (!__cmpxchg_double_slab(s, page,
 		freelist, counters,
 		NULL, new.counters,
 		"get_freelist"));
-- 
1.7.9.5

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