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)	\
23do {							\
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