scsi: target: Change return type to vm_fault_t

Use new return type vm_fault_t for fault handler in struct
vm_operations_struct.

Signed-off-by: Souptick Joarder <jrdr.linux@gmail.com>
Reviewed-by: Matthew Wilcox <mawilcox@microsoft.com>
Signed-off-by: Martin K. Petersen <martin.petersen@oracle.com>

drivers/target/target_core_user.c

@@ -1382,7 +1382,7 @@ static struct page *tcmu_try_get_block_page(struct tcmu_dev *udev, uint32_t dbi)
 	return page;
 }
 
-static int tcmu_vma_fault(struct vm_fault *vmf)
+static vm_fault_t tcmu_vma_fault(struct vm_fault *vmf)
 {
 	struct tcmu_dev *udev = vmf->vma->vm_private_data;
 	struct uio_info *info = &udev->uio_info;