BIO_ADD_PC_PAGE(9) The Linux VFS 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 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.
COPYRIGHT
Kernel Hackers Manual 3.10 June 2014 BIO_ADD_PC_PAGE(9)
