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.