forked from luck/tmp_suning_uos_patched
1da177e4c3
Initial git repository build. I'm not bothering with the full history, even though we have it. We can create a separate "historical" git archive of that later if we want to, and in the meantime it's about 3.2GB when imported into git - space that would just make the early git days unnecessarily complicated, when we don't have a lot of good infrastructure for it. Let it rip!
52 lines
1.5 KiB
C
52 lines
1.5 KiB
C
/*
|
|
* Copyright (c) International Business Machines Corp., 2000-2001
|
|
* Portions Copyright (c) Christoph Hellwig, 2001-2002
|
|
*
|
|
* This program is free software; you can redistribute it and/or modify
|
|
* it under the terms of the GNU General Public License as published by
|
|
* the Free Software Foundation; either version 2 of the License, or
|
|
* (at your option) any later version.
|
|
*
|
|
* This program is distributed in the hope that it will be useful,
|
|
* but WITHOUT ANY WARRANTY; without even the implied warranty of
|
|
* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See
|
|
* the GNU General Public License for more details.
|
|
*
|
|
* You should have received a copy of the GNU General Public License
|
|
* along with this program; if not, write to the Free Software
|
|
* Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA
|
|
*/
|
|
#ifndef _H_JFS_LOCK
|
|
#define _H_JFS_LOCK
|
|
|
|
#include <linux/spinlock.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; \
|
|
schedule(); \
|
|
lock_cmd; \
|
|
} \
|
|
current->state = TASK_RUNNING; \
|
|
remove_wait_queue(&wq, &__wait); \
|
|
} while (0)
|
|
|
|
#endif /* _H_JFS_LOCK */
|