diff --git a/fs/incfs/format.c b/fs/incfs/format.c
index 691d7e474328..06ddaade8523 100644
--- a/fs/incfs/format.c
+++ b/fs/incfs/format.c
@@ -413,7 +413,7 @@ int incfs_write_mapping_fh_to_backing_file(struct backing_file_context *bfc,
 
 	fh.fh_mapped_file_size = cpu_to_le64(file_size);
 	fh.fh_original_uuid = *uuid;
-	fh.fh_flags = INCFS_FILE_MAPPED;
+	fh.fh_flags = cpu_to_le32(INCFS_FILE_MAPPED);
 
 	LOCK_REQUIRED(bfc->bc_mutex);
 
diff --git a/fs/incfs/pseudo_files.c b/fs/incfs/pseudo_files.c
index 7c20d452c031..d407209c0d99 100644
--- a/fs/incfs/pseudo_files.c
+++ b/fs/incfs/pseudo_files.c
@@ -922,7 +922,7 @@ static long ioctl_create_mapped_file(struct mount_info *mi, void __user *arg)
 	}
 
 	error = init_new_mapped_file(mi, file_dentry, &args.source_file_id,
-			size_attr_value, cpu_to_le64(args.source_offset));
+			args.size, args.source_offset);
 	if (error)
 		goto delete_file;
 
@@ -1108,7 +1108,7 @@ static __poll_t blocks_written_poll(struct file *f, poll_table *wait)
 	unsigned long blocks_written;
 
 	if (!mi)
-		return -EFAULT;
+		return 0;
 
 	poll_wait(f, &mi->mi_blocks_written_notif_wq, wait);
 	blocks_written = atomic_read(&mi->mi_blocks_written);