On Mon, Mar 30, 2020 at 12:36:40PM +0000, Wei Yang wrote: > As the comment mentioned, we reserved several ranges of internal node > for tree maintenance, 0-62, 256, 257. This means a node bigger than > XA_ZERO_ENTRY is a normal node. > > The checked on XA_ZERO_ENTRY seems to be more meaningful. 257-1023 are also reserved, they just aren't used yet. XA_ZERO_ENTRY is not guaranteed to be the largest reserved entry.
