BLK_RQ_MAP_KERN
Section: Block Devices (9)
Updated: February 2011
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NAME
blk_rq_map_kern - map kernel data to a request, for REQ_TYPE_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. Can be called multple times to append multple buffers.
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