New versions of btrfs-progs dropped radix_tree and made incompatible changes to kerncompat.h. radix_tree was overkill, since it was only used to track if a page had been seen before.
Replace radix_tree with a simple bitmap, and drop the broken imported source files.
New versions of btrfs-progs dropped radix_tree and made incompatible changes to kerncompat.h. radix_tree was overkill, since it was only used to track if a page had been seen before.
Replace radix_tree with a simple bitmap, and drop the broken imported source files.
Fixes #52