centos man page for bio_map_kern

BIO_MAP_KERN(9) 						   The Linux VFS						   BIO_MAP_KERN(9)

NAME
       bio_map_kern - map kernel address into bio

SYNOPSIS
       struct bio * bio_map_kern(struct request_queue * q, void * data, unsigned int len, gfp_t gfp_mask);

ARGUMENTS
       q
	   the struct request_queue for the bio

       data
	   pointer to buffer to map

       len
	   length in bytes

       gfp_mask
	   allocation flags for bio allocation

DESCRIPTION
       Map the kernel address into a bio suitable for io to a block device. Returns an error pointer in case of error.

COPYRIGHT
Kernel Hackers Manual 3.10					     June 2014							   BIO_MAP_KERN(9)