generic_make_request(9)
NAME
generic_make_request
SYNOPSIS
void generic_make_request(struct bio * bio);
ARGUMENTS
- bio
- The bio describing the location in memory and on the
- device.
DESCRIPTION
- generic_make_request is used to make I/O requests of block
- devices. It is passed a &struct bio, which describes the I/O that
- needs to be done.
- generic_make_request does not return any status. The suc
- cess/failure status of the request, along with notification of
- completion, is delivered asynchronously through the
- bio->bi_end_io function described (one day) else where.
- The caller of generic_make_request must make sure that
- bi_io_vec are set to describe the memory buffer, and that bi_dev
- and bi_sector are set to describe the device address, and the
- bi_end_io and optionally bi_private are set to describe how com
- pletion notification should be signaled.
- generic_make_request and the drivers it calls may use
- bi_next if this bio happens to be merged with someone else, and
- may change bi_dev and bi_sector for remaps as it sees fit. So the
- values of these fields should NOT be depended on after the call
- to generic_make_request.