linux-kernel - [PATCH] selftests/filesystems: Multiple declaration of __kernel_fsid

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Message-ID: <20250709164715.113504-1-alessandro.zanni87@gmail.com>
Date: Wed,  9 Jul 2025 18:47:11 +0200
From: Alessandro Zanni <alessandro.zanni87@...il.com>
To: shuah@...nel.org,
	brauner@...nel.org,
	amir73il@...il.com,
	jhubbard@...dia.com,
	jack@...e.cz,
	mszeredi@...hat.com
Cc: Alessandro Zanni <alessandro.zanni87@...il.com>,
	linux-kselftest@...r.kernel.org,
	linux-kernel@...r.kernel.org
Subject: [PATCH] selftests/filesystems: Multiple declaration of __kernel_fsid_t

Fix to remove a multiple declaration of the struct __kernel_fsid_t, which
is already declared in posix_types.h, to solve the following errors:
- mount-notify_test.c:22:3: error: conflicting types for
‘__kernel_fsid_t’; have ‘struct <anonymous>’
   22 | } __kernel_fsid_t;
- usr/include/asm-generic/posix_types.h:81:3: note: previous declaration
of ‘__kernel_fsid_t’ with type ‘__kernel_fsid_t’
   81 | } __kernel_fsid_t;

To reproduce the issue, use the command:
make kselftest TARGET=filesystems/statmount

Signed-off-by: Alessandro Zanni <alessandro.zanni87@...il.com>
---
 .../selftests/filesystems/mount-notify/mount-notify_test.c | 7 -------
 .../filesystems/mount-notify/mount-notify_test_ns.c        | 7 -------
 2 files changed, 14 deletions(-)

diff --git a/tools/testing/selftests/filesystems/mount-notify/mount-notify_test.c b/tools/testing/selftests/filesystems/mount-notify/mount-notify_test.c
index 63ce708d93ed..5a3b0ace1a88 100644
--- a/tools/testing/selftests/filesystems/mount-notify/mount-notify_test.c
+++ b/tools/testing/selftests/filesystems/mount-notify/mount-notify_test.c
@@ -15,13 +15,6 @@
 #include "../statmount/statmount.h"
 #include "../utils.h"
 
-// Needed for linux/fanotify.h
-#ifndef __kernel_fsid_t
-typedef struct {
-	int	val[2];
-} __kernel_fsid_t;
-#endif
-
 #include <sys/fanotify.h>
 
 static const char root_mntpoint_templ[] = "/tmp/mount-notify_test_root.XXXXXX";
diff --git a/tools/testing/selftests/filesystems/mount-notify/mount-notify_test_ns.c b/tools/testing/selftests/filesystems/mount-notify/mount-notify_test_ns.c
index 090a5ca65004..d91946e69591 100644
--- a/tools/testing/selftests/filesystems/mount-notify/mount-notify_test_ns.c
+++ b/tools/testing/selftests/filesystems/mount-notify/mount-notify_test_ns.c
@@ -16,13 +16,6 @@
 #include "../statmount/statmount.h"
 #include "../utils.h"
 
-// Needed for linux/fanotify.h
-#ifndef __kernel_fsid_t
-typedef struct {
-	int	val[2];
-} __kernel_fsid_t;
-#endif
-
 #include <sys/fanotify.h>
 
 static const char root_mntpoint_templ[] = "/tmp/mount-notify_test_root.XXXXXX";
-- 
2.43.0