fs/btrfs/async-thread.h

   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
  23 struct btrfs_workqueue;
  24 /* Internal use only */
  25 struct __btrfs_workqueue;
  26 struct btrfs_work;
  27 typedef void (*btrfs_func_t)(struct btrfs_work *arg);
  28
  29 struct 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
  41 struct btrfs_workqueue *btrfs_alloc_workqueue(const char *name,
  42                                               int flags,
  43                                               int max_active,
  44                                               int thresh);
  45 void btrfs_init_work(struct btrfs_work *work,
  46                      btrfs_func_t func,
  47                      btrfs_func_t ordered_func,
  48                      btrfs_func_t ordered_free);
  49 void btrfs_queue_work(struct btrfs_workqueue *wq,
  50                       struct btrfs_work *work);
  51 void btrfs_destroy_workqueue(struct btrfs_workqueue *wq);
  52 void btrfs_workqueue_set_max(struct btrfs_workqueue *wq, int max);
  53 void btrfs_set_work_high_priority(struct btrfs_work *work);
  54 #endif