1/* SPDX-License-Identifier: GPL-2.0 */
 2/*
 3 * Copyright (C) 2007 Oracle.  All rights reserved.
 4 * Copyright (C) 2014 Fujitsu.  All rights reserved.
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 5 */
 6
 7#ifndef BTRFS_ASYNC_THREAD_H
 8#define BTRFS_ASYNC_THREAD_H
 9
10#include <linux/compiler_types.h>
11#include <linux/workqueue.h>
12#include <linux/list.h>
13
14struct btrfs_fs_info;
15struct btrfs_workqueue;
 
 
16struct btrfs_work;
17
18typedef void (*btrfs_func_t)(struct btrfs_work *arg);
19typedef void (*btrfs_ordered_func_t)(struct btrfs_work *arg, bool);
20
21struct btrfs_work {
22	btrfs_func_t func;
23	btrfs_ordered_func_t ordered_func;
 
24
25	/* Don't touch things below */
26	struct work_struct normal_work;
27	struct list_head ordered_list;
28	struct btrfs_workqueue *wq;
29	unsigned long flags;
30};
31
32struct btrfs_workqueue *btrfs_alloc_workqueue(struct btrfs_fs_info *fs_info,
33					      const char *name,
34					      unsigned int flags,
35					      int limit_active,
36					      int thresh);
37struct btrfs_workqueue *btrfs_alloc_ordered_workqueue(
38				struct btrfs_fs_info *fs_info, const char *name,
39				unsigned int flags);
40void btrfs_init_work(struct btrfs_work *work, btrfs_func_t func,
41		     btrfs_ordered_func_t ordered_func);
42void btrfs_queue_work(struct btrfs_workqueue *wq,
43		      struct btrfs_work *work);
44void btrfs_destroy_workqueue(struct btrfs_workqueue *wq);
45void btrfs_workqueue_set_max(struct btrfs_workqueue *wq, int max);
46struct btrfs_fs_info * __pure btrfs_work_owner(const struct btrfs_work *work);
47struct btrfs_fs_info * __pure btrfs_workqueue_owner(const struct btrfs_workqueue *wq);
48bool btrfs_workqueue_normal_congested(const struct btrfs_workqueue *wq);
49void btrfs_flush_workqueue(struct btrfs_workqueue *wq);
50
51#endif

 
 1/*
 2 * Copyright (C) 2007 Oracle.  All rights reserved.
 3 * Copyright (C) 2014 Fujitsu.  All rights reserved.
 4 *
 5 * This program is free software; you can redistribute it and/or
 6 * modify it under the terms of the GNU General Public
 7 * License v2 as published by the Free Software Foundation.
 8 *
 9 * This program is distributed in the hope that it will be useful,
10 * but WITHOUT ANY WARRANTY; without even the implied warranty of
11 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
12 * General Public License for more details.
13 *
14 * You should have received a copy of the GNU General Public
15 * License along with this program; if not, write to the
16 * Free Software Foundation, Inc., 59 Temple Place - Suite 330,
17 * Boston, MA 021110-1307, USA.
18 */
19
20#ifndef __BTRFS_ASYNC_THREAD_
21#define __BTRFS_ASYNC_THREAD_
22
 
 
 
 
 
23struct btrfs_workqueue;
24/* Internal use only */
25struct __btrfs_workqueue;
26struct btrfs_work;
 
27typedef void (*btrfs_func_t)(struct btrfs_work *arg);
 
28
29struct btrfs_work {
30	btrfs_func_t func;
31	btrfs_func_t ordered_func;
32	btrfs_func_t ordered_free;
33
34	/* Don't touch things below */
35	struct work_struct normal_work;
36	struct list_head ordered_list;
37	struct __btrfs_workqueue *wq;
38	unsigned long flags;
39};
40
41struct btrfs_workqueue *btrfs_alloc_workqueue(const char *name,
42					      int flags,
43					      int max_active,
 
44					      int thresh);
45void btrfs_init_work(struct btrfs_work *work,
46		     btrfs_func_t func,
47		     btrfs_func_t ordered_func,
48		     btrfs_func_t ordered_free);
 
49void btrfs_queue_work(struct btrfs_workqueue *wq,
50		      struct btrfs_work *work);
51void btrfs_destroy_workqueue(struct btrfs_workqueue *wq);
52void btrfs_workqueue_set_max(struct btrfs_workqueue *wq, int max);
53void btrfs_set_work_high_priority(struct btrfs_work *work);
 
 
 
 
54#endif