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Chris Mason8b712842008-06-11 16:50:36 -04001/*
2 * Copyright (C) 2007 Oracle. All rights reserved.
Qu Wenruo08a9ff32014-02-28 10:46:03 +08003 * Copyright (C) 2014 Fujitsu. All rights reserved.
Chris Mason8b712842008-06-11 16:50:36 -04004 *
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_
Liu Bo9e0af232014-08-15 23:36:53 +080022#include <linux/workqueue.h>
Chris Mason8b712842008-06-11 16:50:36 -040023
Qu Wenruod458b052014-02-28 10:46:19 +080024struct btrfs_workqueue;
Qu Wenruo1ca08972014-02-28 10:46:04 +080025/* Internal use only */
Qu Wenruod458b052014-02-28 10:46:19 +080026struct __btrfs_workqueue;
Qu Wenruo6db89142014-03-06 04:19:50 +000027struct btrfs_work;
28typedef void (*btrfs_func_t)(struct btrfs_work *arg);
Liu Bo9e0af232014-08-15 23:36:53 +080029typedef void (*btrfs_work_func_t)(struct work_struct *arg);
Qu Wenruo08a9ff32014-02-28 10:46:03 +080030
Qu Wenruod458b052014-02-28 10:46:19 +080031struct btrfs_work {
Qu Wenruo6db89142014-03-06 04:19:50 +000032 btrfs_func_t func;
33 btrfs_func_t ordered_func;
34 btrfs_func_t ordered_free;
Qu Wenruo08a9ff32014-02-28 10:46:03 +080035
36 /* Don't touch things below */
37 struct work_struct normal_work;
38 struct list_head ordered_list;
Qu Wenruod458b052014-02-28 10:46:19 +080039 struct __btrfs_workqueue *wq;
Qu Wenruo08a9ff32014-02-28 10:46:03 +080040 unsigned long flags;
41};
42
Liu Bo9e0af232014-08-15 23:36:53 +080043#define BTRFS_WORK_HELPER_PROTO(name) \
44void btrfs_##name(struct work_struct *arg)
45
46BTRFS_WORK_HELPER_PROTO(worker_helper);
47BTRFS_WORK_HELPER_PROTO(delalloc_helper);
48BTRFS_WORK_HELPER_PROTO(flush_delalloc_helper);
49BTRFS_WORK_HELPER_PROTO(cache_helper);
50BTRFS_WORK_HELPER_PROTO(submit_helper);
51BTRFS_WORK_HELPER_PROTO(fixup_helper);
52BTRFS_WORK_HELPER_PROTO(endio_helper);
53BTRFS_WORK_HELPER_PROTO(endio_meta_helper);
54BTRFS_WORK_HELPER_PROTO(endio_meta_write_helper);
55BTRFS_WORK_HELPER_PROTO(endio_raid56_helper);
Miao Xie8b110e32014-09-12 18:44:03 +080056BTRFS_WORK_HELPER_PROTO(endio_repair_helper);
Liu Bo9e0af232014-08-15 23:36:53 +080057BTRFS_WORK_HELPER_PROTO(rmw_helper);
58BTRFS_WORK_HELPER_PROTO(endio_write_helper);
59BTRFS_WORK_HELPER_PROTO(freespace_write_helper);
60BTRFS_WORK_HELPER_PROTO(delayed_meta_helper);
61BTRFS_WORK_HELPER_PROTO(readahead_helper);
62BTRFS_WORK_HELPER_PROTO(qgroup_rescan_helper);
63BTRFS_WORK_HELPER_PROTO(extent_refs_helper);
64BTRFS_WORK_HELPER_PROTO(scrub_helper);
65BTRFS_WORK_HELPER_PROTO(scrubwrc_helper);
66BTRFS_WORK_HELPER_PROTO(scrubnc_helper);
Zhao Lei20b2e302015-06-04 20:09:15 +080067BTRFS_WORK_HELPER_PROTO(scrubparity_helper);
68
Liu Bo9e0af232014-08-15 23:36:53 +080069
Qu Wenruoc3a46892014-03-12 08:05:33 +000070struct btrfs_workqueue *btrfs_alloc_workqueue(const char *name,
David Sterba6f011052015-02-16 18:34:01 +010071 unsigned int flags,
Qu Wenruo6db89142014-03-06 04:19:50 +000072 int max_active,
73 int thresh);
Liu Bo9e0af232014-08-15 23:36:53 +080074void btrfs_init_work(struct btrfs_work *work, btrfs_work_func_t helper,
Qu Wenruo6db89142014-03-06 04:19:50 +000075 btrfs_func_t func,
76 btrfs_func_t ordered_func,
77 btrfs_func_t ordered_free);
Qu Wenruod458b052014-02-28 10:46:19 +080078void btrfs_queue_work(struct btrfs_workqueue *wq,
79 struct btrfs_work *work);
80void btrfs_destroy_workqueue(struct btrfs_workqueue *wq);
81void btrfs_workqueue_set_max(struct btrfs_workqueue *wq, int max);
82void btrfs_set_work_high_priority(struct btrfs_work *work);
Chris Mason8b712842008-06-11 16:50:36 -040083#endif