Function report |
Source Code:block\elevator.c |
Create Date:2022-07-28 16:58:04 |
| Last Modify:2020-03-12 14:18:49 | Copyright©Brick |
| home page | Tree |
| Annotation kernel can get tool activity | Download SCCT | Chinese |
Name:Get the first elevator providing the features required by the request queue.* Default to "none" if no matching elevator is found.
Proto:static struct elevator_type *elevator_get_by_features(struct request_queue *q)
Type:struct elevator_type
Parameter:
| Type | Parameter | Name |
|---|---|---|
| struct request_queue * | q |
| 643 | struct elevator_type * e, * found = NULL |
| 645 | spin_lock( & elv_list_lock) |
| 648 | If elv_support_features(elevator_features, required_elevator_features) Then |
| 655 | If found && Not try_module_get(elevator_owner) Then found = NULL |
| 658 | spin_unlock( & elv_list_lock) |
| 659 | Return found |
| Name | Describe |
|---|---|
| elevator_init_mq | For a device queue that has no required features, use the default elevator* settings. Otherwise, use the first elevator available matching the required* features. If no suitable elevator is find or if the chosen elevator |
| Source code conversion tool public plug-in interface | X |
|---|---|
| Support c/c++/esqlc/java Oracle/Informix/Mysql Plug-in can realize: logical Report Code generation and batch code conversion |