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/workqueue.h>
11
12struct btrfs_fs_info;
13struct btrfs_workqueue;
 
 
14struct btrfs_work;
15typedef void (*btrfs_func_t)(struct btrfs_work *arg);
16typedef void (*btrfs_ordered_func_t)(struct btrfs_work *arg, bool);
17
18struct btrfs_work {
19	btrfs_func_t func;
20	btrfs_ordered_func_t ordered_func;
 
21
22	/* Don't touch things below */
23	struct work_struct normal_work;
24	struct list_head ordered_list;
25	struct btrfs_workqueue *wq;
26	unsigned long flags;
27};
28
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
29struct btrfs_workqueue *btrfs_alloc_workqueue(struct btrfs_fs_info *fs_info,
30					      const char *name,
31					      unsigned int flags,
32					      int limit_active,
33					      int thresh);
34struct btrfs_workqueue *btrfs_alloc_ordered_workqueue(
35				struct btrfs_fs_info *fs_info, const char *name,
36				unsigned int flags);
37void btrfs_init_work(struct btrfs_work *work, btrfs_func_t func,
38		     btrfs_ordered_func_t ordered_func);
39void btrfs_queue_work(struct btrfs_workqueue *wq,
40		      struct btrfs_work *work);
41void btrfs_destroy_workqueue(struct btrfs_workqueue *wq);
42void btrfs_workqueue_set_max(struct btrfs_workqueue *wq, int max);
43struct btrfs_fs_info * __pure btrfs_work_owner(const struct btrfs_work *work);
44struct btrfs_fs_info * __pure btrfs_workqueue_owner(const struct btrfs_workqueue *wq);
45bool btrfs_workqueue_normal_congested(const struct btrfs_workqueue *wq);
46void btrfs_flush_workqueue(struct btrfs_workqueue *wq);
47
48#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#include <linux/workqueue.h>
23
24struct btrfs_fs_info;
25struct btrfs_workqueue;
26/* Internal use only */
27struct __btrfs_workqueue;
28struct btrfs_work;
29typedef void (*btrfs_func_t)(struct btrfs_work *arg);
30typedef void (*btrfs_work_func_t)(struct work_struct *arg);
31
32struct btrfs_work {
33	btrfs_func_t func;
34	btrfs_func_t ordered_func;
35	btrfs_func_t ordered_free;
36
37	/* Don't touch things below */
38	struct work_struct normal_work;
39	struct list_head ordered_list;
40	struct __btrfs_workqueue *wq;
41	unsigned long flags;
42};
43
44#define BTRFS_WORK_HELPER_PROTO(name)					\
45void btrfs_##name(struct work_struct *arg)
46
47BTRFS_WORK_HELPER_PROTO(worker_helper);
48BTRFS_WORK_HELPER_PROTO(delalloc_helper);
49BTRFS_WORK_HELPER_PROTO(flush_delalloc_helper);
50BTRFS_WORK_HELPER_PROTO(cache_helper);
51BTRFS_WORK_HELPER_PROTO(submit_helper);
52BTRFS_WORK_HELPER_PROTO(fixup_helper);
53BTRFS_WORK_HELPER_PROTO(endio_helper);
54BTRFS_WORK_HELPER_PROTO(endio_meta_helper);
55BTRFS_WORK_HELPER_PROTO(endio_meta_write_helper);
56BTRFS_WORK_HELPER_PROTO(endio_raid56_helper);
57BTRFS_WORK_HELPER_PROTO(endio_repair_helper);
58BTRFS_WORK_HELPER_PROTO(rmw_helper);
59BTRFS_WORK_HELPER_PROTO(endio_write_helper);
60BTRFS_WORK_HELPER_PROTO(freespace_write_helper);
61BTRFS_WORK_HELPER_PROTO(delayed_meta_helper);
62BTRFS_WORK_HELPER_PROTO(readahead_helper);
63BTRFS_WORK_HELPER_PROTO(qgroup_rescan_helper);
64BTRFS_WORK_HELPER_PROTO(extent_refs_helper);
65BTRFS_WORK_HELPER_PROTO(scrub_helper);
66BTRFS_WORK_HELPER_PROTO(scrubwrc_helper);
67BTRFS_WORK_HELPER_PROTO(scrubnc_helper);
68BTRFS_WORK_HELPER_PROTO(scrubparity_helper);
69
70
71struct btrfs_workqueue *btrfs_alloc_workqueue(struct btrfs_fs_info *fs_info,
72					      const char *name,
73					      unsigned int flags,
74					      int limit_active,
75					      int thresh);
76void btrfs_init_work(struct btrfs_work *work, btrfs_work_func_t helper,
77		     btrfs_func_t func,
78		     btrfs_func_t ordered_func,
79		     btrfs_func_t ordered_free);
 
80void btrfs_queue_work(struct btrfs_workqueue *wq,
81		      struct btrfs_work *work);
82void btrfs_destroy_workqueue(struct btrfs_workqueue *wq);
83void btrfs_workqueue_set_max(struct btrfs_workqueue *wq, int max);
84void btrfs_set_work_high_priority(struct btrfs_work *work);
85struct btrfs_fs_info *btrfs_work_owner(struct btrfs_work *work);
86struct btrfs_fs_info *btrfs_workqueue_owner(struct __btrfs_workqueue *wq);
87bool btrfs_workqueue_normal_congested(struct btrfs_workqueue *wq);
 
88#endif