slub: use bool function return values of true/false not 1/0

Use the normal return values for bool functions
Signed-off-by: NJoe Perches <joe@perches.com>
Cc: Christoph Lameter <cl@linux.com>
Cc: Pekka Enberg <penberg@kernel.org>
Acked-by: NDavid Rientjes <rientjes@google.com>
Cc: Joonsoo Kim <iamjoonsoo.kim@lge.com>
Signed-off-by: NAndrew Morton <akpm@linux-foundation.org>
Signed-off-by: NLinus Torvalds <torvalds@linux-foundation.org>

mm/slub.c

@@ -374,7 +374,7 @@ static inline bool __cmpxchg_double_slab(struct kmem_cache *s, struct page *page
 		if (cmpxchg_double(&page->freelist, &page->counters,
 				   freelist_old, counters_old,
 				   freelist_new, counters_new))
-			return 1;
+			return true;
 	} else
 #endif
 	{
@@ -384,7 +384,7 @@ static inline bool __cmpxchg_double_slab(struct kmem_cache *s, struct page *page
 			page->freelist = freelist_new;
 			set_page_slub_counters(page, counters_new);
 			slab_unlock(page);
-			return 1;
+			return true;
 		}
 		slab_unlock(page);
 	}
@@ -396,7 +396,7 @@ static inline bool __cmpxchg_double_slab(struct kmem_cache *s, struct page *page
 	pr_info("%s %s: cmpxchg double redo ", n, s->name);
 #endif
 
-	return 0;
+	return false;
 }
 
 static inline bool cmpxchg_double_slab(struct kmem_cache *s, struct page *page,
@@ -410,7 +410,7 @@ static inline bool cmpxchg_double_slab(struct kmem_cache *s, struct page *page,
 		if (cmpxchg_double(&page->freelist, &page->counters,
 				   freelist_old, counters_old,
 				   freelist_new, counters_new))
-			return 1;
+			return true;
 	} else
 #endif
 	{
@@ -424,7 +424,7 @@ static inline bool cmpxchg_double_slab(struct kmem_cache *s, struct page *page,
 			set_page_slub_counters(page, counters_new);
 			slab_unlock(page);
 			local_irq_restore(flags);
-			return 1;
+			return true;
 		}
 		slab_unlock(page);
 		local_irq_restore(flags);
@@ -437,7 +437,7 @@ static inline bool cmpxchg_double_slab(struct kmem_cache *s, struct page *page,
 	pr_info("%s %s: cmpxchg double redo ", n, s->name);
 #endif
 
-	return 0;
+	return false;
 }
 
 #ifdef CONFIG_SLUB_DEBUG