Name
blk_rq_map_kern —
map kernel data to a request, for REQ_BLOCK_PC usage
Synopsis
int blk_rq_map_kern ( | struct request_queue * | q, |
| | struct request * | rq, |
| | void * | kbuf, |
| | unsigned int | len, |
| | gfp_t | gfp_mask); |
Arguments
q
request queue where request should be inserted
rq
request to fill
kbuf
the kernel buffer
len
length of user data
gfp_mask
memory allocation flags
Description
Data will be mapped directly if possible. Otherwise a bounce
buffer is used.