diff --git a/fs/ceph/addr.c b/fs/ceph/addr.c
index 7b79a54a2789..36aa6d8cdff7 100644
--- a/fs/ceph/addr.c
+++ b/fs/ceph/addr.c
@@ -1392,7 +1392,7 @@ static int ceph_filemap_fault(struct vm_area_struct *vma, struct vm_fault *vmf)
 	struct ceph_inode_info *ci = ceph_inode(inode);
 	struct ceph_file_info *fi = vma->vm_file->private_data;
 	struct page *pinned_page = NULL;
-	loff_t off = vmf->pgoff << PAGE_SHIFT;
+	loff_t off = (loff_t)vmf->pgoff << PAGE_SHIFT;
 	int want, got, ret;
 	sigset_t oldset;