bio_add_pc_page (9) Linux Manual Page
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 up to 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.