block: add a loff_t cast to bdev_nr_bytes

Christoph Hellwig · axboe · commit 2116274af46b · 2021-11-04T11:28:03.000-06:00
Not really needed as both loff_t and sector_t are always 64-bits wide, but this documents the different types a bit better. Signed-off-by: Christoph Hellwig <hch@lst.de> Link: https://lore.kernel.org/r/20211104172037.531803-1-hch@lst.de Signed-off-by: Jens Axboe <axboe@kernel.dk>
diff --git a/include/linux/genhd.h b/include/linux/genhd.h
@@ -243,7 +243,7 @@ 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)

Original file line number	Diff line number	Diff line change
`@@ -243,7 +243,7 @@ static inline sector_t bdev_nr_sectors(struct block_device *bdev)`
`243`	`243`
`244`	`244`	`static inline loff_t bdev_nr_bytes(struct block_device *bdev)`
`245`	`245`	`{`
`246`		`- return bdev_nr_sectors(bdev) << SECTOR_SHIFT;`
	`246`	`+ return (loff_t)bdev_nr_sectors(bdev) << SECTOR_SHIFT;`
`247`	`247`	`}`
`248`	`248`
`249`	`249`	`static inline sector_t get_capacity(struct gendisk *disk)`