bio_add_pc_page(9)
NAME
bio_add_pc_page - attempt to add page to bio
SYNOPSIS
int bio_add_pc_page(struct request_queue * q, struct bio * bio,
struct page * page, unsigned int len,
unsigned int offset);
ARGUMENTS
- q
- the target queue
- bio
- destination bio
- page
- page to add
- len
- vec entry length
- offset
- vec entry offset
DESCRIPTION
Attempt to add a page to the bio_vec maplist. This can fail for a
number of reasons, such as the bio being full or target block device
limitations. The target block device must allow bio´s smaller than
PAGE_SIZE, so it is always possible to add a single page to an empty
bio. This should only be used by REQ_PC bios.