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@@ -418,15 +418,16 @@ EXPORT_SYMBOL(radix_tree_tag_clear);
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#ifndef __KERNEL__ /* Only the test harness uses this at present */
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/**
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- * radix_tree_tag_get - get a tag on a radix tree node
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- * @root: radix tree root
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- * @index: index key
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- * @tag: tag index
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+ * radix_tree_tag_get - get a tag on a radix tree node
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+ * @root: radix tree root
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+ * @index: index key
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+ * @tag: tag index
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*
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- * Return the search tag corresponging to @index in the radix tree.
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+ * Return values:
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*
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- * Returns zero if the tag is unset, or if there is no corresponding item
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- * in the tree.
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+ * 0: tag not present
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+ * 1: tag present, set
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+ * -1: tag present, unset
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*/
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int radix_tree_tag_get(struct radix_tree_root *root,
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unsigned long index, int tag)
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@@ -460,7 +461,7 @@ int radix_tree_tag_get(struct radix_tree_root *root,
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int ret = tag_get(slot, tag, offset);
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BUG_ON(ret && saw_unset_tag);
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- return ret;
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+ return ret ? 1 : -1;
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}
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slot = slot->slots[offset];
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shift -= RADIX_TREE_MAP_SHIFT;
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