Merge tag 'for-5.16/bdev-size-2021-11-09' of git://git.kernel.dk/linu…

…x-block

Pull more bdev size updates from Jens Axboe:
 "Two followup changes for the bdev-size series from this merge window:

   - Add loff_t cast to bdev_nr_bytes() (Christoph)

   - Use bdev_nr_bytes() consistently for the block parts at least (me)"

* tag 'for-5.16/bdev-size-2021-11-09' of git://git.kernel.dk/linux-block:
  block: use new bdev_nr_bytes() helper for blkdev_{read,write}_iter()
  block: add a loff_t cast to bdev_nr_bytes

block/fops.c

@@ -527,7 +527,7 @@ static ssize_t blkdev_write_iter(struct kiocb *iocb, struct iov_iter *from)
 {
 	struct block_device *bdev = iocb->ki_filp->private_data;
 	struct inode *bd_inode = bdev->bd_inode;
-	loff_t size = i_size_read(bd_inode);
+	loff_t size = bdev_nr_bytes(bdev);
 	struct blk_plug plug;
 	size_t shorted = 0;
 	ssize_t ret;
@@ -565,7 +565,7 @@ static ssize_t blkdev_write_iter(struct kiocb *iocb, struct iov_iter *from)
 static ssize_t blkdev_read_iter(struct kiocb *iocb, struct iov_iter *to)
 {
 	struct block_device *bdev = iocb->ki_filp->private_data;
-	loff_t size = i_size_read(bdev->bd_inode);
+	loff_t size = bdev_nr_bytes(bdev);
 	loff_t pos = iocb->ki_pos;
 	size_t shorted = 0;
 	ssize_t ret;

include/linux/genhd.h

@@ -250,7 +250,7 @@ static inline sector_t bdev_nr_sectors(struct block_device *bdev)
 
 static inline loff_t bdev_nr_bytes(struct block_device *bdev)
 {
-	return bdev_nr_sectors(bdev) << SECTOR_SHIFT;
+	return (loff_t)bdev_nr_sectors(bdev) << SECTOR_SHIFT;
 }
 
 static inline sector_t get_capacity(struct gendisk *disk)