[linux-block.git] / fs / jfs / jfs_lock.h

/* SPDX-License-Identifier: GPL-2.0-or-later */
/*
 *   Copyright (C) International Business Machines Corp., 2000-2001
 *   Portions Copyright (C) Christoph Hellwig, 2001-2002
 */
#ifndef _H_JFS_LOCK
#define _H_JFS_LOCK

#include <linux/spinlock.h>
#include <linux/mutex.h>
#include <linux/sched.h>

/*
 *	jfs_lock.h
 */

/*
 * Conditional sleep where condition is protected by spinlock
 *
 * lock_cmd and unlock_cmd take and release the spinlock
 */
#define __SLEEP_COND(wq, cond, lock_cmd, unlock_cmd)	\
do {							\
	DECLARE_WAITQUEUE(__wait, current);		\
							\
	add_wait_queue(&wq, &__wait);			\
	for (;;) {					\
		set_current_state(TASK_UNINTERRUPTIBLE);\
		if (cond)				\
			break;				\
		unlock_cmd;				\
		io_schedule();				\
		lock_cmd;				\
	}						\
	__set_current_state(TASK_RUNNING);			\
	remove_wait_queue(&wq, &__wait);		\
} while (0)

#endif				/* _H_JFS_LOCK */
Commit	Line	Data
1a59d1b8	1	/* SPDX-License-Identifier: GPL-2.0-or-later */
1da177e4	2	/*
63f83c9f DK	3	* Copyright (C) International Business Machines Corp., 2000-2001
63f83c9f DK	4	* Portions Copyright (C) Christoph Hellwig, 2001-2002
1da177e4 LT	5	*/
	6	#ifndef _H_JFS_LOCK
	7	#define _H_JFS_LOCK
	8
	9	#include <linux/spinlock.h>
1de87444	10	#include <linux/mutex.h>
1da177e4 LT	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; \
4aa0d230	32	io_schedule(); \
1da177e4 LT	33	lock_cmd; \
1da177e4 LT	34	} \
3cbb1c8e	35	__set_current_state(TASK_RUNNING); \
1da177e4 LT	36	remove_wait_queue(&wq, &__wait); \
	37	} while (0)
	38
	39	#endif /* _H_JFS_LOCK */