40 строки
883 B
C
40 строки
883 B
C
/* SPDX-License-Identifier: GPL-2.0-or-later */
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/*
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* Copyright (C) International Business Machines Corp., 2000-2001
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* Portions Copyright (C) Christoph Hellwig, 2001-2002
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*/
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#ifndef _H_JFS_LOCK
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#define _H_JFS_LOCK
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#include <linux/spinlock.h>
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#include <linux/mutex.h>
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#include <linux/sched.h>
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/*
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* jfs_lock.h
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*/
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/*
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* Conditional sleep where condition is protected by spinlock
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*
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* lock_cmd and unlock_cmd take and release the spinlock
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*/
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#define __SLEEP_COND(wq, cond, lock_cmd, unlock_cmd) \
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do { \
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DECLARE_WAITQUEUE(__wait, current); \
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\
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add_wait_queue(&wq, &__wait); \
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for (;;) { \
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set_current_state(TASK_UNINTERRUPTIBLE);\
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if (cond) \
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break; \
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unlock_cmd; \
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io_schedule(); \
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lock_cmd; \
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} \
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__set_current_state(TASK_RUNNING); \
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remove_wait_queue(&wq, &__wait); \
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} while (0)
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#endif /* _H_JFS_LOCK */
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