2 * blktrace output analysis: generate a timeline & gather statistics
4 * Copyright (C) 2006 Alan D. Brunelle <Alan.Brunelle@hp.com>
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.
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.
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
23 void trace_requeue(struct io *r_iop)
25 if (!io_setup(r_iop, IOP_R)) {
30 if (ready_requeue(r_iop, r_iop))
36 int retry_requeue(struct io *r_iop)
38 if (!ready_requeue(r_iop, r_iop))
45 int ready_requeue(struct io *r_iop, struct io *top)
47 struct io *d_iop = dip_find_sec(r_iop->dip, IOP_D, BIT_START(r_iop));
49 return ready_issue(d_iop, top);
53 void run_requeue(struct io *r_iop)
56 struct io *d_iop = dip_find_sec(r_iop->dip, IOP_D, BIT_START(r_iop));
59 run_unissue(d_iop, &del_head);
60 __unlink(d_iop, r_iop);
63 list_add_tail(&r_iop->f_head, &del_head);
64 release_iops(&del_head);