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

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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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