fs/btrfs/async-thread.h

   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
  12 struct btrfs_fs_info;
  13 struct btrfs_workqueue;
  14 /* Internal use only */
  15 struct __btrfs_workqueue;
  16 struct btrfs_work;
  17 typedef void (*btrfs_func_t)(struct btrfs_work *arg);
  18 typedef void (*btrfs_work_func_t)(struct work_struct *arg);
  19
  20 struct btrfs_work {
  21         btrfs_func_t func;
  22         btrfs_func_t ordered_func;
  23         btrfs_func_t ordered_free;
  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
  32 #define BTRFS_WORK_HELPER_PROTO(name)                                   \
  33 void btrfs_##name(struct work_struct *arg)
  34
  35 BTRFS_WORK_HELPER_PROTO(worker_helper);
  36 BTRFS_WORK_HELPER_PROTO(delalloc_helper);
  37 BTRFS_WORK_HELPER_PROTO(flush_delalloc_helper);
  38 BTRFS_WORK_HELPER_PROTO(cache_helper);
  39 BTRFS_WORK_HELPER_PROTO(submit_helper);
  40 BTRFS_WORK_HELPER_PROTO(fixup_helper);
  41 BTRFS_WORK_HELPER_PROTO(endio_helper);
  42 BTRFS_WORK_HELPER_PROTO(endio_meta_helper);
  43 BTRFS_WORK_HELPER_PROTO(endio_meta_write_helper);
  44 BTRFS_WORK_HELPER_PROTO(endio_raid56_helper);
  45 BTRFS_WORK_HELPER_PROTO(endio_repair_helper);
  46 BTRFS_WORK_HELPER_PROTO(rmw_helper);
  47 BTRFS_WORK_HELPER_PROTO(endio_write_helper);
  48 BTRFS_WORK_HELPER_PROTO(freespace_write_helper);
  49 BTRFS_WORK_HELPER_PROTO(delayed_meta_helper);
  50 BTRFS_WORK_HELPER_PROTO(readahead_helper);
  51 BTRFS_WORK_HELPER_PROTO(qgroup_rescan_helper);
  52 BTRFS_WORK_HELPER_PROTO(extent_refs_helper);
  53 BTRFS_WORK_HELPER_PROTO(scrub_helper);
  54 BTRFS_WORK_HELPER_PROTO(scrubwrc_helper);
  55 BTRFS_WORK_HELPER_PROTO(scrubnc_helper);
  56 BTRFS_WORK_HELPER_PROTO(scrubparity_helper);
  57
  58
  59 struct btrfs_workqueue *btrfs_alloc_workqueue(struct btrfs_fs_info *fs_info,
  60                                               const char *name,
  61                                               unsigned int flags,
  62                                               int limit_active,
  63                                               int thresh);
  64 void btrfs_init_work(struct btrfs_work *work, btrfs_work_func_t helper,
  65                      btrfs_func_t func,
  66                      btrfs_func_t ordered_func,
  67                      btrfs_func_t ordered_free);
  68 void btrfs_queue_work(struct btrfs_workqueue *wq,
  69                       struct btrfs_work *work);
  70 void btrfs_destroy_workqueue(struct btrfs_workqueue *wq);
  71 void btrfs_workqueue_set_max(struct btrfs_workqueue *wq, int max);
  72 void btrfs_set_work_high_priority(struct btrfs_work *work);
  73 struct btrfs_fs_info *btrfs_work_owner(const struct btrfs_work *work);
  74 struct btrfs_fs_info *btrfs_workqueue_owner(const struct __btrfs_workqueue *wq);
  75 bool btrfs_workqueue_normal_congested(const struct btrfs_workqueue *wq);
  76
  77 #endif