blk_rq_map_kern(9)
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.