large, multiple bounce bios may be required; see the code for details.
For decryption, blk-crypto-fallback "wraps" the bio's completion callback
-(``bi_complete``) and private data (``bi_private``) with its own, unsets the
+(``bi_end_io``) and private data (``bi_private``) with its own, unsets the
bio's encryption context, then submits the bio. If the read completes
successfully, blk-crypto-fallback restores the bio's original completion
callback and private data, then decrypts the bio's data in-place using the