/* 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 */