← Back to branch summary

~ubuntu-branches/ubuntu/utopic/linux-ti-omap/utopic

« back to all changes in this revision

Viewing changes to fs/jfs/jfs_lock.h

  • Committer: Bazaar Package Importer
  • Author(s): Amit Kucheria, Amit Kucheria
  • Date: 2010-03-10 02:28:15 UTC
  • Revision ID: james.westby@ubuntu.com-20100310022815-7sd3gwvn5kenaq33
Tags: 2.6.33-500.1
[ Amit Kucheria ]

* Initial release of a 2.6.33-based OMAP kernel
* UBUNTU: [Upstream] Fix omap 1-wire driver compilation
* UBUNTU: ubuntu: AppArmor -- update to mainline 2010-03-04

Show diffs side-by-side

added added

removed removed

Lines of Context:
fs/jfs/jfs_lock.h
 
1
/*
 
2
 *   Copyright (C) International Business Machines Corp., 2000-2001
 
3
 *   Portions Copyright (C) Christoph Hellwig, 2001-2002
 
4
 *
 
5
 *   This program is free software;  you can redistribute it and/or modify
 
6
 *   it under the terms of the GNU General Public License as published by
 
7
 *   the Free Software Foundation; either version 2 of the License, or
 
8
 *   (at your option) any later version.
 
9
 *
 
10
 *   This program is distributed in the hope that it will be useful,
 
11
 *   but WITHOUT ANY WARRANTY;  without even the implied warranty of
 
12
 *   MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See
 
13
 *   the GNU General Public License for more details.
 
14
 *
 
15
 *   You should have received a copy of the GNU General Public License
 
16
 *   along with this program;  if not, write to the Free Software
 
17
 *   Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA
 
18
 */
 
19
#ifndef _H_JFS_LOCK
 
20
#define _H_JFS_LOCK
 
21
 
 
22
#include <linux/spinlock.h>
 
23
#include <linux/mutex.h>
 
24
#include <linux/sched.h>
 
25
 
 
26
/*
 
27
 *      jfs_lock.h
 
28
 */
 
29
 
 
30
/*
 
31
 * Conditional sleep where condition is protected by spinlock
 
32
 *
 
33
 * lock_cmd and unlock_cmd take and release the spinlock
 
34
 */
 
35
#define __SLEEP_COND(wq, cond, lock_cmd, unlock_cmd)    \
 
36
do {                                                    \
 
37
        DECLARE_WAITQUEUE(__wait, current);             \
 
38
                                                        \
 
39
        add_wait_queue(&wq, &__wait);                   \
 
40
        for (;;) {                                      \
 
41
                set_current_state(TASK_UNINTERRUPTIBLE);\
 
42
                if (cond)                               \
 
43
                        break;                          \
 
44
                unlock_cmd;                             \
 
45
                io_schedule();                          \
 
46
                lock_cmd;                               \
 
47
        }                                               \
 
48
        __set_current_state(TASK_RUNNING);                      \
 
49
        remove_wait_queue(&wq, &__wait);                \
 
50
} while (0)
 
51
 
 
52
#endif                          /* _H_JFS_LOCK */