1BIO_ADD_PC_PAGE(9) The Linux VFS BIO_ADD_PC_PAGE(9)
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6 bio_add_pc_page - attempt to add page to bio
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9 int bio_add_pc_page(struct request_queue * q, struct bio * bio,
10 struct page * page, unsigned int len,
11 unsigned int offset);
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14 q
15 the target queue
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17 bio
18 destination bio
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20 page
21 page to add
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23 len
24 vec entry length
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26 offset
27 vec entry offset
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30 Attempt to add a page to the bio_vec maplist. This can fail for a
31 number of reasons, such as the bio being full or target block device
32 limitations. The target block device must allow bio's smaller than
33 PAGE_SIZE, so it is always possible to add a single page to an empty
34 bio. This should only be used by REQ_PC bios.
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37Kernel Hackers Manual 2.6. November 2011 BIO_ADD_PC_PAGE(9)