Name

blk_add_request_payload — add a payload to a request

Synopsis

void blk_add_request_payload (struct request * rq,
 struct page * page,
 int offset,
 unsigned int len);
 

Arguments

rq

request to update

page

page backing the payload

offset

offset in page

len

length of the payload.

Description

This allows to later add a payload to an already submitted request by a block driver. The driver needs to take care of freeing the payload itself.

Note that this is a quite horrible hack and nothing but handling of discard requests should ever use it.