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Linux/fs/btrfs/async-thread.h

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  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 

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