BIO_PUT(9) The Linux VFS BIO_PUT(9)
NAME bio_put - release a reference to a bio
SYNOPSIS void bio_put(struct bio * bio);
ARGUMENTS bio bio to release reference to
DESCRIPTION Put a reference to a struct bio, either one you have gotten with bio_alloc, bio_get or bio_clone. The last put of a bio will free it.
COPYRIGHT Kernel Hackers Manual 2.6. January 2013 BIO_PUT(9)