What previously was the main bug fix in this series was dropped for v3. It turns out what is now patch 2 is sufficient to address the issue, while doing the requested tidying. The latter two patches are for 4.21 only, with the final one being up for debate altogether.
1: radix-tree: purge node allocation override hooks
2: radix-tree: introduce RADIX_TREE{,_INIT}()
3: radix-tree: drop "root" parameters from radix_tree_node_{alloc,free}()
4: PCI: drop pci_segments_init()
Jan
