|BIO_CHAIN(9)||The Linux VFS||BIO_CHAIN(9)|
bio_chain - chain bio completions
void bio_chain(struct bio * bio, struct bio * parent);
The caller won't have a bi_end_io called when bio completes - instead, parent's bi_end_io won't be called until both parent and bio have completed; the chained bio will also be freed when it completes.
The caller must not set bi_private or bi_end_io in bio.
|January 2017||Kernel Hackers Manual 4.8.|