1 /* SPDX-License-Identifier: GPL-2.0-or-later */
2 /*
3 * Copyright (C) International Business Machines Corp., 2000-2001
4 * Portions Copyright (C) Christoph Hellwig, 2001-2002
5 */
6 #ifndef _H_JFS_LOCK
7 #define _H_JFS_LOCK
8
9 #include <linux/spinlock.h>
10 #include <linux/mutex.h>
11 #include <linux/sched.h>
12
13 /*
14 * jfs_lock.h
15 */
16
17 /*
18 * Conditional sleep where condition is protected by spinlock
19 *
20 * lock_cmd and unlock_cmd take and release the spinlock
21 */
22 #define __SLEEP_COND(wq, cond, lock_cmd, unlock_cmd) \
23 do { \
24 DECLARE_WAITQUEUE(__wait, current); \
25 \
26 add_wait_queue(&wq, &__wait); \
27 for (;;) { \
28 set_current_state(TASK_UNINTERRUPTIBLE);\
29 if (cond) \
30 break; \
31 unlock_cmd; \
32 io_schedule(); \
33 lock_cmd; \
34 } \
35 __set_current_state(TASK_RUNNING); \
36 remove_wait_queue(&wq, &__wait); \
37 } while (0)
38
39 #endif /* _H_JFS_LOCK */
40
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