bio_map_kern (9) Linux Manual Page
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.