NAME
bio_map_kern - map kernel address into bio
SYNOPSIS
struct bio * bio_map_kern (request_queue_t * q, void * data,
unsigned int len, gfp_t gfp_mask);
ARGUMENTS
q the request_queue_t 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.