[PATCH] radixtree: normalize radix_tree_tag_get() return value

[Wu Fengguang]

In radix_tree_tag_get(), return normalized value of 0/1, as indicated
by its comment.

Signed-off-by: Wu Fengguang <wfg@xxxxxxxxxxxxxxxx>
---

--- linux-2.6.17-rc5-mm2.orig/lib/radix-tree.c
+++ linux-2.6.17-rc5-mm2/lib/radix-tree.c
@@ -531,7 +531,7 @@ int radix_tree_tag_get(struct radix_tree
 			int ret = tag_get(slot, tag, offset);
 
 			BUG_ON(ret && saw_unset_tag);
-			return ret;
+			return !! ret;
 		}
 		slot = slot->slots[offset];
 		shift -= RADIX_TREE_MAP_SHIFT;
-
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