1 files changed, 17 insertions, 17 deletions

diff --git a/block/blk-settings.c b/block/blk-settings.c
index 902c40d67120..a7c857ad7d10 100644
--- a/block/blk-settings.c
+++ b/block/blk-settings.c
@@ -8,6 +8,7 @@
 #include <linux/bio.h>
 #include <linux/blkdev.h>
 #include <linux/pagemap.h>
+#include <linux/backing-dev-defs.h>
 #include <linux/gcd.h>
 #include <linux/lcm.h>
 #include <linux/jiffies.h>
@@ -140,7 +141,9 @@ void blk_queue_max_hw_sectors(struct request_queue *q, unsigned int max_hw_secto
 				 limits->logical_block_size >> SECTOR_SHIFT);
 	limits->max_sectors = max_sectors;
 
-	q->backing_dev_info->io_pages = max_sectors >> (PAGE_SHIFT - 9);
+	if (!q->disk)
+		return;
+	q->disk->bdi->io_pages = max_sectors >> (PAGE_SHIFT - 9);
 }
 EXPORT_SYMBOL(blk_queue_max_hw_sectors);
 
@@ -380,18 +383,19 @@ void blk_queue_alignment_offset(struct request_queue *q, unsigned int offset)
 }
 EXPORT_SYMBOL(blk_queue_alignment_offset);
 
-void blk_queue_update_readahead(struct request_queue *q)
+void disk_update_readahead(struct gendisk *disk)
 {
+	struct request_queue *q = disk->queue;
+
 	/*
 	 * For read-ahead of large files to be effective, we need to read ahead
 	 * at least twice the optimal I/O size.
 	 */
-	q->backing_dev_info->ra_pages =
+	disk->bdi->ra_pages =
 		max(queue_io_opt(q) * 2 / PAGE_SIZE, VM_READAHEAD_PAGES);
-	q->backing_dev_info->io_pages =
-		queue_max_sectors(q) >> (PAGE_SHIFT - 9);
+	disk->bdi->io_pages = queue_max_sectors(q) >> (PAGE_SHIFT - 9);
 }
-EXPORT_SYMBOL_GPL(blk_queue_update_readahead);
+EXPORT_SYMBOL_GPL(disk_update_readahead);
 
 /**
  * blk_limits_io_min - set minimum request size for a device
@@ -471,7 +475,9 @@ EXPORT_SYMBOL(blk_limits_io_opt);
 void blk_queue_io_opt(struct request_queue *q, unsigned int opt)
 {
 	blk_limits_io_opt(&q->limits, opt);
-	q->backing_dev_info->ra_pages =
+	if (!q->disk)
+		return;
+	q->disk->bdi->ra_pages =
 		max(queue_io_opt(q) * 2 / PAGE_SIZE, VM_READAHEAD_PAGES);
 }
 EXPORT_SYMBOL(blk_queue_io_opt);
@@ -661,17 +667,11 @@ void disk_stack_limits(struct gendisk *disk, struct block_device *bdev,
 	struct request_queue *t = disk->queue;
 
 	if (blk_stack_limits(&t->limits, &bdev_get_queue(bdev)->limits,
-			get_start_sect(bdev) + (offset >> 9)) < 0) {
-		char top[BDEVNAME_SIZE], bottom[BDEVNAME_SIZE];
-
-		disk_name(disk, 0, top);
-		bdevname(bdev, bottom);
-
-		printk(KERN_NOTICE "%s: Warning: Device %s is misaligned\n",
-		       top, bottom);
-	}
+			get_start_sect(bdev) + (offset >> 9)) < 0)
+		pr_notice("%s: Warning: Device %pg is misaligned\n",
+			disk->disk_name, bdev);
 
-	blk_queue_update_readahead(disk->queue);
+	disk_update_readahead(disk);
 }
 EXPORT_SYMBOL(disk_stack_limits);