Merge branch 'master' of ssh://git.kernel.dk/data/git/blktrace
[blktrace.git] / btt / trace_requeue.c
CommitLineData
095181f2
JA
1/*
2 * blktrace output analysis: generate a timeline & gather statistics
3 *
4 * Copyright (C) 2006 Alan D. Brunelle <Alan.Brunelle@hp.com>
5 *
6 * This program is free software; you can redistribute it and/or modify
7 * it under the terms of the GNU General Public License as published by
8 * the Free Software Foundation; either version 2 of the License, or
9 * (at your option) any later version.
10 *
11 * This program is distributed in the hope that it will be useful,
12 * but WITHOUT ANY WARRANTY; without even the implied warranty of
13 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
14 * GNU General Public License for more details.
15 *
16 * You should have received a copy of the GNU General Public License
17 * along with this program; if not, write to the Free Software
18 * Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA
19 *
20 */
21#include "globals.h"
22
23void trace_requeue(struct io *r_iop)
24{
d76c5b81
AB
25 LIST_HEAD(rmhd);
26 struct io *d_iop;
27
28 if ((io_setup(r_iop, IOP_R) == 0) ||
29 (d_iop = dip_find_sec(r_iop->dip, IOP_D,
30 BIT_START(r_iop))) == NULL) {
095181f2
JA
31 io_release(r_iop);
32 return;
33 }
d76c5b81 34 dip_rem(d_iop);
095181f2 35
d76c5b81
AB
36#if defined(DEBUG)
37 ASSERT(ready_issue(d_iop, r_iop) != 0);
38#else
39 (void)ready_issue(d_iop, r_iop);
40#endif
095181f2 41
d76c5b81
AB
42 run_unissue(d_iop, &rmhd);
43 list_add_tail(&r_iop->f_head, &rmhd);
44 release_iops(&rmhd);
095181f2 45}