29 	/* List head pointing to ordered work list */
55 struct btrfs_fs_info * __pure btrfs_work_owner(const struct btrfs_work *work)  in btrfs_work_owner()  argument
57 	return work->wq->fs_info;  in btrfs_work_owner()
163  * Hook for threshold which will be called before executing the work,
213 	struct btrfs_work *work;  in run_ordered_work()  local
222 		work = list_first_entry(list, struct btrfs_work, ordered_list);  in run_ordered_work()
223 		if (!test_bit(WORK_DONE_BIT, &work->flags))  in run_ordered_work()
229 		 * updates from ordinary work function.  in run_ordered_work()
235 		 * we leave the work item on the list as a barrier so  in run_ordered_work()
236 		 * that later work items that are done don't have their  in run_ordered_work()
239 		if (test_and_set_bit(WORK_ORDER_DONE_BIT, &work->flags))  in run_ordered_work()
241 		trace_btrfs_ordered_sched(work);  in run_ordered_work()
243 		work->ordered_func(work, false);  in run_ordered_work()
247 		list_del(&work->ordered_list);  in run_ordered_work()
250 		if (work == self) {  in run_ordered_work()
252 			 * This is the work item that the worker is currently  in run_ordered_work()
256 			 * of work items. I.e., if a work item with the same  in run_ordered_work()
257 			 * address and work function is queued twice, the second  in run_ordered_work()
259 			 * work item may be freed and recycled with the same  in run_ordered_work()
260 			 * work function; the workqueue code assumes that the  in run_ordered_work()
261 			 * original work item cannot depend on the recycled work  in run_ordered_work()
264 			 * Note that different types of Btrfs work can depend on  in run_ordered_work()
265 			 * each other, and one type of work on one Btrfs  in run_ordered_work()
266 			 * filesystem may even depend on the same type of work  in run_ordered_work()
268 			 * Therefore, we must not allow the current work item to  in run_ordered_work()
278 			work->ordered_func(work, true);  in run_ordered_work()
279 			/* NB: work must not be dereferenced past this point. */  in run_ordered_work()
280 			trace_btrfs_all_work_done(wq->fs_info, work);  in run_ordered_work()
294 	struct btrfs_work *work = container_of(normal_work, struct btrfs_work,  in btrfs_work_helper()  local
296 	struct btrfs_workqueue *wq = work->wq;  in btrfs_work_helper()
300 	 * We should not touch things inside work in the following cases:  in btrfs_work_helper()
301 	 * 1) after work->func() if it has no ordered_func(..., true) to free  in btrfs_work_helper()
302 	 *    Since the struct is freed in work->func().  in btrfs_work_helper()
304 	 *    The work may be freed in other threads almost instantly.  in btrfs_work_helper()
307 	if (work->ordered_func)  in btrfs_work_helper()
310 	trace_btrfs_work_sched(work);  in btrfs_work_helper()
312 	work->func(work);  in btrfs_work_helper()
315 		 * Ensures all memory accesses done in the work function are  in btrfs_work_helper()
317 		 * which is going to executed the ordered work sees them.  in btrfs_work_helper()
321 		set_bit(WORK_DONE_BIT, &work->flags);  in btrfs_work_helper()
322 		run_ordered_work(wq, work);  in btrfs_work_helper()
324 		/* NB: work must not be dereferenced past this point. */  in btrfs_work_helper()
325 		trace_btrfs_all_work_done(wq->fs_info, work);  in btrfs_work_helper()
329 void btrfs_init_work(struct btrfs_work *work, btrfs_func_t func,  in btrfs_init_work()  argument
332 	work->func = func;  in btrfs_init_work()
333 	work->ordered_func = ordered_func;  in btrfs_init_work()
334 	INIT_WORK(&work->normal_work, btrfs_work_helper);  in btrfs_init_work()
335 	INIT_LIST_HEAD(&work->ordered_list);  in btrfs_init_work()
336 	work->flags = 0;  in btrfs_init_work()
339 void btrfs_queue_work(struct btrfs_workqueue *wq, struct btrfs_work *work)  in btrfs_queue_work()  argument
343 	work->wq = wq;  in btrfs_queue_work()
345 	if (work->ordered_func) {  in btrfs_queue_work()
347 		list_add_tail(&work->ordered_list, &wq->ordered_list);  in btrfs_queue_work()
350 	trace_btrfs_work_queued(work);  in btrfs_queue_work()
351 	queue_work(wq->normal_wq, &work->normal_work);  in btrfs_queue_work()