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.TH "BLK_STOP_QUEUE" "9" "09 April 2004" "" ""

.SH NAME
blk_stop_queue \- stop a queue
.SH SYNOPSIS
.sp
\fB
.sp
void blk_stop_queue  (request_queue_t * \fIq\fB);
\fR
.SH "ARGUMENTS"
.TP
\fB\fIq\fB\fR
The &request_queue_t in question
.SH "DESCRIPTION"
.PP
The Linux block layer assumes that a block driver will consume all
entries on the request queue when the request_fn strategy is called.
Often this will not happen, because of hardware limitations (queue
depth settings). If a device driver gets a 'queue full' response,
or if it simply chooses not to queue more I/O at one point, it can
call this function to prevent the request_fn from being called until
the driver has signalled it's ready to go again. This happens by calling
\fBblk_start_queue\fR to restart queue operations. Queue lock must be held.
.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 2.6.0.