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-rw-r--r--block/blk-core.c37
1 files changed, 0 insertions, 37 deletions
diff --git a/block/blk-core.c b/block/blk-core.c
index 1bf83a0..25faab0 100644
--- a/block/blk-core.c
+++ b/block/blk-core.c
@@ -282,35 +282,6 @@ void blk_set_queue_dying(struct request_queue *q)
}
EXPORT_SYMBOL_GPL(blk_set_queue_dying);
-/* Unconfigure the I/O scheduler and dissociate from the cgroup controller. */
-void blk_exit_queue(struct request_queue *q)
-{
- /*
- * Since the I/O scheduler exit code may access cgroup information,
- * perform I/O scheduler exit before disassociating from the block
- * cgroup controller.
- */
- if (q->elevator) {
- ioc_clear_queue(q);
- elevator_exit(q, q->elevator);
- q->elevator = NULL;
- }
-
- /*
- * Remove all references to @q from the block cgroup controller before
- * restoring @q->queue_lock to avoid that restoring this pointer causes
- * e.g. blkcg_print_blkgs() to crash.
- */
- blkcg_exit_queue(q);
-
- /*
- * Since the cgroup code may dereference the @q->backing_dev_info
- * pointer, only decrease its reference count after having removed the
- * association with the block cgroup controller.
- */
- bdi_put(q->backing_dev_info);
-}
-
/**
* blk_cleanup_queue - shutdown a request queue
* @q: request queue to shutdown
@@ -346,14 +317,6 @@ void blk_cleanup_queue(struct request_queue *q)
del_timer_sync(&q->backing_dev_info->laptop_mode_wb_timer);
blk_sync_queue(q);
- /*
- * I/O scheduler exit is only safe after the sysfs scheduler attribute
- * has been removed.
- */
- WARN_ON_ONCE(q->kobj.state_in_sysfs);
-
- blk_exit_queue(q);
-
if (queue_is_mq(q))
blk_mq_exit_queue(q);