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.TH "GENERIC_MAKE_REQUEST" "9" "17 July 2003" "" ""

.SH NAME
generic_make_request \- 
.SH SYNOPSIS
.sp
\fB
.sp
void generic_make_request  (struct bio * \fIbio\fB);
\fR
.SH "ARGUMENTS"
.TP
\fB\fIbio\fB\fR
The bio describing the location in memory and on the device.
.SH "DESCRIPTION"
.PP
\fBgeneric_make_request\fR 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.
.PP
\fBgeneric_make_request\fR does not return any status.  The
success/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.
.PP
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
completion notification should be signaled.
.PP
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.
.SH "ABOUT THIS DOCUMENT"
.PP
This documentation is free software; you can redistribute
it and/or modify it under the terms of the GNU General Public
License as published by the Free Software Foundation; either
version 2 of the License, or (at your option) any later
version.
.PP
This program is distributed in the hope that it will be
useful, but WITHOUT ANY WARRANTY; without even the implied
warranty of MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.
See the GNU General Public License for more details.
.PP
You should have received a copy of the GNU General Public
License along with this program; if not, write to the Free
Software Foundation, Inc., 59 Temple Place, Suite 330, Boston,
MA 02111-1307 USA
.PP
For more details see the file COPYING in the source
distribution of Linux.
.PP
If you have comments on the formatting of this manpage, then please contact
Michael Still (mikal@stillhq.com).
.PP
This documentation was generated with kernel version 2.5.71.