--- block/blk-core.c
+++ block/blk-core.c
@@ -413,8 +413,7 @@ struct request_queue *blk_alloc_queue_no
if (!q)
return NULL;
- q->backing_dev_info.ra_pages =
- (VM_MAX_READAHEAD * 1024) / PAGE_CACHE_SIZE;
+ q->backing_dev_info.ra_pages = max_readahead_pages;
q->backing_dev_info.state = 0;
q->backing_dev_info.capabilities = BDI_CAP_MAP_COPY;
q->backing_dev_info.name = "block";