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 17 struct btrfs_work { 18 btrfs_func_t func; 19 btrfs_func_t ordered_func; 20 btrfs_func_t ordered_free; 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 29 struct 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); 34 struct btrfs_workqueue *btrfs_alloc_ordered_workqueue( 35 struct btrfs_fs_info *fs_info, const char *name, 36 unsigned int flags); 37 void btrfs_init_work(struct btrfs_work *work, btrfs_func_t func, 38 btrfs_func_t ordered_func, btrfs_func_t ordered_free); 39 void btrfs_queue_work(struct btrfs_workqueue *wq, 40 struct btrfs_work *work); 41 void btrfs_destroy_workqueue(struct btrfs_workqueue *wq); 42 void btrfs_workqueue_set_max(struct btrfs_workqueue *wq, int max); 43 struct btrfs_fs_info * __pure btrfs_work_owner(const struct btrfs_work *work); 44 struct btrfs_fs_info * __pure btrfs_workqueue_owner(const struct btrfs_workqueue *wq); 45 bool btrfs_workqueue_normal_congested(const struct btrfs_workqueue *wq); 46 void btrfs_flush_workqueue(struct btrfs_workqueue *wq); 47 48 #endif 49