[v3,for-4.20,0/4] AMD/IOMMU: assorted corrections (leftover)

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Jan Beulich Feb. 4, 2025, 1 p.m. UTC

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