shmem: Convert shmem_radix_tree_replace to XArray

Rename shmem_radix_tree_replace() to shmem_replace_entry() and
convert it to use the XArray API.

Signed-off-by: Matthew Wilcox <willy@infradead.org>
This commit is contained in:
Matthew Wilcox 2017-11-17 10:22:37 -05:00
commit 62f945b6a7