linux-kernel - [PATCH 3/5] uapi: merge the 32-bit mips struct flock into the generic one

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Date:   Tue, 11 Jan 2022 09:35:13 +0100
From:   Christoph Hellwig <hch@....de>
To:     Arnd Bergmann <arnd@...db.de>
Cc:     Guo Ren <guoren@...nel.org>, x86@...nel.org,
        linux-arm-kernel@...ts.infradead.org, linux-kernel@...r.kernel.org,
        linux-mips@...r.kernel.org, linux-parisc@...r.kernel.org,
        linuxppc-dev@...ts.ozlabs.org, linux-s390@...r.kernel.org,
        sparclinux@...r.kernel.org, linux-arch@...r.kernel.org
Subject: [PATCH 3/5] uapi: merge the 32-bit mips struct flock into the generic one

Add a new __ARCH_FLOCK_EXTRA_SYSID macro following the style of
__ARCH_FLOCK_PAD to avoid having a separate definition just for one
architecture.

Signed-off-by: Christoph Hellwig <hch@....de>
---
 arch/mips/include/uapi/asm/fcntl.h     | 26 +++-----------------------
 include/uapi/asm-generic/fcntl.h       |  5 +++--
 tools/include/uapi/asm-generic/fcntl.h |  5 +++--
 3 files changed, 9 insertions(+), 27 deletions(-)

diff --git a/arch/mips/include/uapi/asm/fcntl.h b/arch/mips/include/uapi/asm/fcntl.h
index 42e13dead5431..9e44ac810db94 100644
--- a/arch/mips/include/uapi/asm/fcntl.h
+++ b/arch/mips/include/uapi/asm/fcntl.h
@@ -50,30 +50,10 @@
 #define F_SETLKW64	35
 #endif
 
-/*
- * The flavours of struct flock.  "struct flock" is the ABI compliant
- * variant.  Finally struct flock64 is the LFS variant of struct flock.	 As
- * a historic accident and inconsistence with the ABI definition it doesn't
- * contain all the same fields as struct flock.
- */
-
 #if _MIPS_SIM != _MIPS_SIM_ABI64
-
-#include <linux/types.h>
-
-struct flock {
-	short	l_type;
-	short	l_whence;
-	__kernel_off_t	l_start;
-	__kernel_off_t	l_len;
-	long	l_sysid;
-	__kernel_pid_t l_pid;
-	long	pad[4];
-};
-
-#define HAVE_ARCH_STRUCT_FLOCK
-
-#endif /* _MIPS_SIM == _MIPS_SIM_ABI32 */
+#define __ARCH_FLOCK_EXTRA_SYSID	long l_sysid;
+#define __ARCH_FLOCK_PAD		long pad[4];
+#endif
 
 #include <asm-generic/fcntl.h>
 
diff --git a/include/uapi/asm-generic/fcntl.h b/include/uapi/asm-generic/fcntl.h
index c53897ca5d402..98f4ff165b776 100644
--- a/include/uapi/asm-generic/fcntl.h
+++ b/include/uapi/asm-generic/fcntl.h
@@ -192,18 +192,19 @@ struct f_owner_ex {
 
 #define F_LINUX_SPECIFIC_BASE	1024
 
-#ifndef HAVE_ARCH_STRUCT_FLOCK
 struct flock {
 	short	l_type;
 	short	l_whence;
 	__kernel_off_t	l_start;
 	__kernel_off_t	l_len;
+#ifdef __ARCH_FLOCK_EXTRA_SYSID
+	__ARCH_FLOCK_EXTRA_SYSID
+#endif
 	__kernel_pid_t	l_pid;
 #ifdef __ARCH_FLOCK_PAD
 	__ARCH_FLOCK_PAD
 #endif
 };
-#endif
 
 struct flock64 {
 	short  l_type;
diff --git a/tools/include/uapi/asm-generic/fcntl.h b/tools/include/uapi/asm-generic/fcntl.h
index 82054502b9748..bf961a71802e0 100644
--- a/tools/include/uapi/asm-generic/fcntl.h
+++ b/tools/include/uapi/asm-generic/fcntl.h
@@ -187,18 +187,19 @@ struct f_owner_ex {
 
 #define F_LINUX_SPECIFIC_BASE	1024
 
-#ifndef HAVE_ARCH_STRUCT_FLOCK
 struct flock {
 	short	l_type;
 	short	l_whence;
 	__kernel_off_t	l_start;
 	__kernel_off_t	l_len;
+#ifdef __ARCH_FLOCK_EXTRA_SYSID
+	__ARCH_FLOCK_EXTRA_SYSID
+#endif
 	__kernel_pid_t	l_pid;
 #ifdef __ARCH_FLOCK_PAD
 	__ARCH_FLOCK_PAD
 #endif
 };
-#endif
 
 struct flock64 {
 	short  l_type;
-- 
2.30.2