centos man page for bio_copy_data

BIO_COPY_DATA(9)						   The Linux VFS						  BIO_COPY_DATA(9)

NAME
       bio_copy_data - copy contents of data buffers from one chain of bios to another

SYNOPSIS
       void bio_copy_data(struct bio * dst, struct bio * src);

ARGUMENTS
       dst
	   destination bio list

       src
	   source bio list

DESCRIPTION
       If src and dst are single bios, bi_next must be NULL - otherwise, treats src and dst as linked lists of bios.

       Stops when it reaches the end of either src or dst - that is, copies min(src->bi_size, dst->bi_size) bytes (or the equivalent for lists of
       bios).

COPYRIGHT
Kernel Hackers Manual 3.10					     June 2014							  BIO_COPY_DATA(9)