If we deleted an entry through an index which looked up a sibling
pointer, we'd end up zeroing out the wrong slots in the node.
Use get_slot_offset() to find the right slot.

Signed-off-by: Matthew Wilcox <wi...@linux.intel.com>
Reviewed-by: Ross Zwisler <ross.zwis...@linux.intel.com>
---
 lib/radix-tree.c | 2 +-
 1 file changed, 1 insertion(+), 1 deletion(-)

diff --git a/lib/radix-tree.c b/lib/radix-tree.c
index c0366d1..b3364b9 100644
--- a/lib/radix-tree.c
+++ b/lib/radix-tree.c
@@ -1558,7 +1558,7 @@ void *radix_tree_delete_item(struct radix_tree_root *root,
                return entry;
        }
 
-       offset = index & RADIX_TREE_MAP_MASK;
+       offset = get_slot_offset(node, slot);
 
        /*
         * Clear all tags associated with the item to be deleted.
-- 
2.8.0.rc3

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