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TOMOYO Linux Cross Reference
Linux/fs/btrfs/async-thread.h

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  1 /*
  2  * Copyright (C) 2007 Oracle.  All rights reserved.
  3  * Copyright (C) 2014 Fujitsu.  All rights reserved.
  4  *
  5  * This program is free software; you can redistribute it and/or
  6  * modify it under the terms of the GNU General Public
  7  * License v2 as published by the Free Software Foundation.
  8  *
  9  * This program is distributed in the hope that it will be useful,
 10  * but WITHOUT ANY WARRANTY; without even the implied warranty of
 11  * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
 12  * General Public License for more details.
 13  *
 14  * You should have received a copy of the GNU General Public
 15  * License along with this program; if not, write to the
 16  * Free Software Foundation, Inc., 59 Temple Place - Suite 330,
 17  * Boston, MA 021110-1307, USA.
 18  */
 19 
 20 #ifndef __BTRFS_ASYNC_THREAD_
 21 #define __BTRFS_ASYNC_THREAD_
 22 #include <linux/workqueue.h>
 23 
 24 struct btrfs_fs_info;
 25 struct btrfs_workqueue;
 26 /* Internal use only */
 27 struct __btrfs_workqueue;
 28 struct btrfs_work;
 29 typedef void (*btrfs_func_t)(struct btrfs_work *arg);
 30 typedef void (*btrfs_work_func_t)(struct work_struct *arg);
 31 
 32 struct btrfs_work {
 33         btrfs_func_t func;
 34         btrfs_func_t ordered_func;
 35         btrfs_func_t ordered_free;
 36 
 37         /* Don't touch things below */
 38         struct work_struct normal_work;
 39         struct list_head ordered_list;
 40         struct __btrfs_workqueue *wq;
 41         unsigned long flags;
 42 };
 43 
 44 #define BTRFS_WORK_HELPER_PROTO(name)                                   \
 45 void btrfs_##name(struct work_struct *arg)
 46 
 47 BTRFS_WORK_HELPER_PROTO(worker_helper);
 48 BTRFS_WORK_HELPER_PROTO(delalloc_helper);
 49 BTRFS_WORK_HELPER_PROTO(flush_delalloc_helper);
 50 BTRFS_WORK_HELPER_PROTO(cache_helper);
 51 BTRFS_WORK_HELPER_PROTO(submit_helper);
 52 BTRFS_WORK_HELPER_PROTO(fixup_helper);
 53 BTRFS_WORK_HELPER_PROTO(endio_helper);
 54 BTRFS_WORK_HELPER_PROTO(endio_meta_helper);
 55 BTRFS_WORK_HELPER_PROTO(endio_meta_write_helper);
 56 BTRFS_WORK_HELPER_PROTO(endio_raid56_helper);
 57 BTRFS_WORK_HELPER_PROTO(endio_repair_helper);
 58 BTRFS_WORK_HELPER_PROTO(rmw_helper);
 59 BTRFS_WORK_HELPER_PROTO(endio_write_helper);
 60 BTRFS_WORK_HELPER_PROTO(freespace_write_helper);
 61 BTRFS_WORK_HELPER_PROTO(delayed_meta_helper);
 62 BTRFS_WORK_HELPER_PROTO(readahead_helper);
 63 BTRFS_WORK_HELPER_PROTO(qgroup_rescan_helper);
 64 BTRFS_WORK_HELPER_PROTO(extent_refs_helper);
 65 BTRFS_WORK_HELPER_PROTO(scrub_helper);
 66 BTRFS_WORK_HELPER_PROTO(scrubwrc_helper);
 67 BTRFS_WORK_HELPER_PROTO(scrubnc_helper);
 68 BTRFS_WORK_HELPER_PROTO(scrubparity_helper);
 69 
 70 
 71 struct btrfs_workqueue *btrfs_alloc_workqueue(struct btrfs_fs_info *fs_info,
 72                                               const char *name,
 73                                               unsigned int flags,
 74                                               int limit_active,
 75                                               int thresh);
 76 void btrfs_init_work(struct btrfs_work *work, btrfs_work_func_t helper,
 77                      btrfs_func_t func,
 78                      btrfs_func_t ordered_func,
 79                      btrfs_func_t ordered_free);
 80 void btrfs_queue_work(struct btrfs_workqueue *wq,
 81                       struct btrfs_work *work);
 82 void btrfs_destroy_workqueue(struct btrfs_workqueue *wq);
 83 void btrfs_workqueue_set_max(struct btrfs_workqueue *wq, int max);
 84 void btrfs_set_work_high_priority(struct btrfs_work *work);
 85 struct btrfs_fs_info *btrfs_work_owner(struct btrfs_work *work);
 86 struct btrfs_fs_info *btrfs_workqueue_owner(struct __btrfs_workqueue *wq);
 87 bool btrfs_workqueue_normal_congested(struct btrfs_workqueue *wq);
 88 #endif
 89 

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