1__GENERIC_MAKE_REQUE(9)          Block Devices         __GENERIC_MAKE_REQUE(9)
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NAME

6       __generic_make_request - hand a buffer to its device driver for I/O
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SYNOPSIS

9       void __generic_make_request(struct bio * bio);
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ARGUMENTS

12       bio
13           The bio describing the location in memory and on the device.
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DESCRIPTION

16       generic_make_request is used to make I/O requests of block devices. It
17       is passed a struct bio, which describes the I/O that needs to be done.
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19       generic_make_request does not return any status. The success/failure
20       status of the request, along with notification of completion, is
21       delivered asynchronously through the bio->bi_end_io function described
22       (one day) else where.
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24       The caller of generic_make_request must make sure that bi_io_vec are
25       set to describe the memory buffer, and that bi_dev and bi_sector are
26       set to describe the device address, and the bi_end_io and optionally
27       bi_private are set to describe how completion notification should be
28       signaled.
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30       generic_make_request and the drivers it calls may use bi_next if this
31       bio happens to be merged with someone else, and may change bi_dev and
32       bi_sector for remaps as it sees fit. So the values of these fields
33       should NOT be depended on after the call to generic_make_request.
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36Kernel Hackers Manual 2.6.       November 2011         __GENERIC_MAKE_REQUE(9)
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