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SuSE 11.3 - man page for bio_add_pc_page (suse section 9)

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 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.
COPYRIGHT
Kernel Hackers Manual 2.6. July 2010 BIO_ADD_PC_PAGE(9)


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