BIO_ADD_PC_PAGE(9) The Linux VFS BIO_ADD_PC_PAGE(9)NAMEbio_add_pc_page - attempt to add page to bio
int bio_add_pc_page(struct request_queue * q, struct bio * bio,
struct page * page, unsigned int len,
unsigned int offset);
the target queue
page to add
vec entry length
vec entry offset
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.
COPYRIGHTKernel Hackers Manual 3.8. June 2014 BIO_ADD_PC_PAGE(9)