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 struct btrfs_work; 15 typedef void (*btrfs_func_t)(struct btrfs_work *arg); 16 typedef void (*btrfs_work_func_t)(struct work_struct *arg); 17 18 struct btrfs_work { 19 btrfs_func_t func; 20 btrfs_func_t ordered_func; 21 btrfs_func_t ordered_free; 22 23 /* Don't touch things below */ 24 struct work_struct normal_work; 25 struct list_head ordered_list; 26 struct btrfs_workqueue *wq; 27 unsigned long flags; 28 }; 29 30 struct btrfs_workqueue *btrfs_alloc_workqueue(struct btrfs_fs_info *fs_info, 31 const char *name, 32 unsigned int flags, 33 int limit_active, 34 int thresh); 35 void btrfs_init_work(struct btrfs_work *work, btrfs_func_t func, 36 btrfs_func_t ordered_func, btrfs_func_t ordered_free); 37 void btrfs_queue_work(struct btrfs_workqueue *wq, 38 struct btrfs_work *work); 39 void btrfs_destroy_workqueue(struct btrfs_workqueue *wq); 40 void btrfs_workqueue_set_max(struct btrfs_workqueue *wq, int max); 41 struct btrfs_fs_info * __pure btrfs_work_owner(const struct btrfs_work *work); 42 struct btrfs_fs_info * __pure btrfs_workqueue_owner(const struct btrfs_workqueue *wq); 43 bool btrfs_workqueue_normal_congested(const struct btrfs_workqueue *wq); 44 void btrfs_flush_workqueue(struct btrfs_workqueue *wq); 45 46 #endif 47