Properly call btrfs_search_slot while shrinking
The shrinking code used btrfs_next_leaf to find the next item, but
this does not cow the blocks it touches. This fix calls search_slot after
finding the next item to do appropriate cow and balancing.
Signed-off-by: Chris Mason <chris.mason@oracle.com>
diff --git a/fs/btrfs/extent-tree.c b/fs/btrfs/extent-tree.c
index 426a022..c390fd8 100644
--- a/fs/btrfs/extent-tree.c
+++ b/fs/btrfs/extent-tree.c
@@ -2434,7 +2434,15 @@
break;
}
leaf = path->nodes[0];
- nritems = btrfs_header_nritems(leaf);
+ btrfs_item_key_to_cpu(leaf, &found_key, path->slots[0]);
+
+ /*
+ * btrfs_next_leaf doesn't cow buffers, we have to
+ * do the search again
+ */
+ memcpy(&key, &found_key, sizeof(key));
+ btrfs_release_path(root, path);
+ continue;
}
btrfs_item_key_to_cpu(leaf, &found_key, path->slots[0]);