888 	 * first place, directly accessing the plug instead of using  in bio_poll()
892 	blk_flush_plug(current->plug, false);  in bio_poll()
1063 void blk_start_plug_nr_ios(struct blk_plug *plug, unsigned short nr_ios)  in blk_start_plug_nr_ios()  argument
1068 	 * If this is a nested plug, don't actually assign it.  in blk_start_plug_nr_ios()
1070 	if (tsk->plug)  in blk_start_plug_nr_ios()
1073 	plug->mq_list = NULL;  in blk_start_plug_nr_ios()
1074 	plug->cached_rq = NULL;  in blk_start_plug_nr_ios()
1075 	plug->nr_ios = min_t(unsigned short, nr_ios, BLK_MAX_REQUEST_COUNT);  in blk_start_plug_nr_ios()
1076 	plug->rq_count = 0;  in blk_start_plug_nr_ios()
1077 	plug->multiple_queues = false;  in blk_start_plug_nr_ios()
1078 	plug->has_elevator = false;  in blk_start_plug_nr_ios()
1079 	INIT_LIST_HEAD(&plug->cb_list);  in blk_start_plug_nr_ios()
1085 	tsk->plug = plug;  in blk_start_plug_nr_ios()
1090  * @plug:	The &struct blk_plug that needs to be initialized
1108  *   plug. By flushing the pending I/O when the process goes to sleep, we avoid
1111 void blk_start_plug(struct blk_plug *plug)  in blk_start_plug()  argument
1113 	blk_start_plug_nr_ios(plug, 1);  in blk_start_plug()
1117 static void flush_plug_callbacks(struct blk_plug *plug, bool from_schedule)  in flush_plug_callbacks()  argument
1121 	while (!list_empty(&plug->cb_list)) {  in flush_plug_callbacks()
1122 		list_splice_init(&plug->cb_list, &callbacks);  in flush_plug_callbacks()
1137 	struct blk_plug *plug = current->plug;  in blk_check_plugged()  local
1140 	if (!plug)  in blk_check_plugged()
1143 	list_for_each_entry(cb, &plug->cb_list, list)  in blk_check_plugged()
1153 		list_add(&cb->list, &plug->cb_list);  in blk_check_plugged()
1159 void __blk_flush_plug(struct blk_plug *plug, bool from_schedule)  in __blk_flush_plug()  argument
1161 	if (!list_empty(&plug->cb_list))  in __blk_flush_plug()
1162 		flush_plug_callbacks(plug, from_schedule);  in __blk_flush_plug()
1163 	blk_mq_flush_plug_list(plug, from_schedule);  in __blk_flush_plug()
1170 	if (unlikely(!rq_list_empty(plug->cached_rq)))  in __blk_flush_plug()
1171 		blk_mq_free_plug_rqs(plug);  in __blk_flush_plug()
1176  * @plug:	The &struct blk_plug passed to blk_start_plug()
1184 void blk_finish_plug(struct blk_plug *plug)  in blk_finish_plug()  argument
1186 	if (plug == current->plug) {  in blk_finish_plug()
1187 		__blk_flush_plug(plug, false);  in blk_finish_plug()
1188 		current->plug = NULL;  in blk_finish_plug()