[PATCH] cramfs cleanup

All places where we do blkdev_size_in_bytes(sb->s_dev) are bogus - we
can get the same information from ->s_bdev without messing with kdev_t,
major/minor, etc.

There will be more patches of that kind - in the long run I'd expect
only one caller of blkdev_size_in_bytes() to survive.  One if
fs/block_dev.c, that is - called when we open device.

fs/cramfs/inode.c

@@ -134,7 +134,7 @@ static void *cramfs_read(struct super_block *sb, unsigned int offset, unsigned i
 		return read_buffers[i] + blk_offset;
 	}
 
-	devsize = blkdev_size_in_bytes(sb->s_dev) >> 12;
+	devsize = sb->s_bdev->bd_inode->i_size >> 12;
 	if (!devsize)
 		devsize = ~0UL;