linux-kernel - [PATCH] selftests/overlayfs: Fix build error on ppc64

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Date: Tue, 21 May 2024 12:26:16 +1000
From: Michael Ellerman <mpe@...erman.id.au>
To: <linux-kselftest@...r.kernel.org>,
	<skhan@...uxfoundation.org>
Cc: <linux-kernel@...r.kernel.org>,
	<linuxppc-dev@...ts.ozlabs.org>
Subject: [PATCH] selftests/overlayfs: Fix build error on ppc64

Fix build error on ppc64:
  dev_in_maps.c: In function ‘get_file_dev_and_inode’:
  dev_in_maps.c:60:59: error: format ‘%llu’ expects argument of type
  ‘long long unsigned int *’, but argument 7 has type ‘__u64 *’ {aka ‘long
  unsigned int *’} [-Werror=format=]

By switching to unsigned long long for u64 for ppc64 builds.

Signed-off-by: Michael Ellerman <mpe@...erman.id.au>
---
 tools/testing/selftests/filesystems/overlayfs/dev_in_maps.c | 1 +
 1 file changed, 1 insertion(+)

diff --git a/tools/testing/selftests/filesystems/overlayfs/dev_in_maps.c b/tools/testing/selftests/filesystems/overlayfs/dev_in_maps.c
index 759f86e7d263..2862aae58b79 100644
--- a/tools/testing/selftests/filesystems/overlayfs/dev_in_maps.c
+++ b/tools/testing/selftests/filesystems/overlayfs/dev_in_maps.c
@@ -1,5 +1,6 @@
 // SPDX-License-Identifier: GPL-2.0
 #define _GNU_SOURCE
+#define __SANE_USERSPACE_TYPES__ // Use ll64
 
 #include <inttypes.h>
 #include <unistd.h>
-- 
2.45.1