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 78