diff --git a/fs/ext2/inode.c b/fs/ext2/inode.c
index aae5f61f980b..c7dbb4661119 100644
--- a/fs/ext2/inode.c
+++ b/fs/ext2/inode.c
@@ -806,7 +806,7 @@ static int ext2_iomap_begin(struct inode *inode, loff_t offset, loff_t length,
 
 	iomap->flags = 0;
 	iomap->bdev = inode->i_sb->s_bdev;
-	iomap->offset = first_block << blkbits;
+	iomap->offset = (u64)first_block << blkbits;
 
 	if (ret == 0) {
 		iomap->type = IOMAP_HOLE;