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/compiler_types.h> 11 #include <linux/workqueue.h> 12 #include <linux/list.h> 13 14 struct btrfs_fs_info; 15 struct btrfs_workqueue; 16 struct btrfs_work; 17 18 typedef void (*btrfs_func_t)(struct btrfs_work *arg); 19 typedef void (*btrfs_ordered_func_t)(struct btrfs_work *arg, bool); 20 21 struct btrfs_work { 22 btrfs_func_t func; 23 btrfs_ordered_func_t ordered_func; 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 struct btrfs_workqueue *btrfs_alloc_workqueue(struct btrfs_fs_info *fs_info, 33 const char *name, 34 unsigned int flags, 35 int limit_active, 36 int thresh); 37 struct btrfs_workqueue *btrfs_alloc_ordered_workqueue( 38 struct btrfs_fs_info *fs_info, const char *name, 39 unsigned int flags); 40 void btrfs_init_work(struct btrfs_work *work, btrfs_func_t func, 41 btrfs_ordered_func_t ordered_func); 42 void btrfs_queue_work(struct btrfs_workqueue *wq, 43 struct btrfs_work *work); 44 void btrfs_destroy_workqueue(struct btrfs_workqueue *wq); 45 void btrfs_workqueue_set_max(struct btrfs_workqueue *wq, int max); 46 struct btrfs_fs_info * __pure btrfs_work_owner(const struct btrfs_work *work); 47 struct btrfs_fs_info * __pure btrfs_workqueue_owner(const struct btrfs_workqueue *wq); 48 bool btrfs_workqueue_normal_congested(const struct btrfs_workqueue *wq); 49 void btrfs_flush_workqueue(struct btrfs_workqueue *wq); 50 51 #endif 52