block: kill request slab cache

axboe · axboe · commit 820efc62fc6c · 2018-11-07T13:42:33.000-07:00
Reviewed-by: Hannes Reinecke &lt;hare@suse.com&gt;
Tested-by: Ming Lei &lt;ming.lei@redhat.com&gt;
Reviewed-by: Omar Sandoval &lt;osandov@fb.com&gt;
Signed-off-by: Jens Axboe &lt;axboe@kernel.dk&gt;
diff --git a/block/blk-core.c b/block/blk-core.c
@@ -57,11 +57,6 @@ EXPORT_TRACEPOINT_SYMBOL_GPL(block_unplug);
 
 DEFINE_IDA(blk_queue_ida);
 
-/*
- * For the allocated request tables
- */
-struct kmem_cache *request_cachep;
-
 /*
  * For queue allocation
  */
@@ -1971,9 +1966,6 @@ int __init blk_dev_init(void)
 	if (!kblockd_workqueue)
 		panic("Failed to create kblockd\n");
 
-	request_cachep = kmem_cache_create("blkdev_requests",
-			sizeof(struct request), 0, SLAB_PANIC, NULL);
-
 	blk_requestq_cachep = kmem_cache_create("request_queue",
 			sizeof(struct request_queue), 0, SLAB_PANIC, NULL);
 
diff --git a/block/blk.h b/block/blk.h
@@ -32,7 +32,6 @@ struct blk_flush_queue {
 };
 
 extern struct kmem_cache *blk_requestq_cachep;
-extern struct kmem_cache *request_cachep;
 extern struct kobj_type blk_queue_ktype;
 extern struct ida blk_queue_ida;
 
