[PATCH v3 07/18] powerpc: Remove direct call to mmap2 syscall handlers

[Rohan McLure]

Syscall handlers should not be invoked internally by their symbol names,
as these symbols defined by the architecture-defined SYSCALL_DEFINE
macro. Move the compatibility syscall definition for mmap2 to
syscalls.c, so that all mmap implementations can share an inline helper
function, as is done with the personality handlers.

Signed-off-by: Rohan McLure <rmclure at linux.ibm.com>
---
V1 -> V2: Move mmap2 compat implementation to asm/kernel/syscalls.c.
---
 arch/powerpc/kernel/sys_ppc32.c | 10 ----------
 arch/powerpc/kernel/syscalls.c  | 11 +++++++++++
 2 files changed, 11 insertions(+), 10 deletions(-)

diff --git a/arch/powerpc/kernel/sys_ppc32.c b/arch/powerpc/kernel/sys_ppc32.c
index 60cb5b4413b0..dd9039671227 100644
--- a/arch/powerpc/kernel/sys_ppc32.c
+++ b/arch/powerpc/kernel/sys_ppc32.c
@@ -25,7 +25,6 @@
 #include <linux/poll.h>
 #include <linux/personality.h>
 #include <linux/stat.h>
-#include <linux/mman.h>
 #include <linux/in.h>
 #include <linux/syscalls.h>
 #include <linux/unistd.h>
@@ -48,15 +47,6 @@
 #include <asm/syscalls.h>
 #include <asm/switch_to.h>
 
-COMPAT_SYSCALL_DEFINE6(mmap2,
-		       unsigned long, addr, size_t, len,
-		       unsigned long, prot, unsigned long, flags,
-		       unsigned long, fd, unsigned long, pgoff)
-{
-	/* This should remain 12 even if PAGE_SIZE changes */
-	return sys_mmap(addr, len, prot, flags, fd, pgoff << 12);
-}
-
 /* 
  * long long munging:
  * The 32 bit ABI passes long longs in an odd even register pair.
diff --git a/arch/powerpc/kernel/syscalls.c b/arch/powerpc/kernel/syscalls.c
index e083935c5bf2..0afbcbd50433 100644
--- a/arch/powerpc/kernel/syscalls.c
+++ b/arch/powerpc/kernel/syscalls.c
@@ -56,6 +56,17 @@ SYSCALL_DEFINE6(mmap2, unsigned long, addr, size_t, len,
 	return do_mmap2(addr, len, prot, flags, fd, pgoff, PAGE_SHIFT-12);
 }
 
+#ifdef CONFIG_COMPAT
+COMPAT_SYSCALL_DEFINE6(mmap2,
+		       unsigned long, addr, size_t, len,
+		       unsigned long, prot, unsigned long, flags,
+		       unsigned long, fd, unsigned long, pgoff)
+{
+	/* This should remain 12 even if PAGE_SIZE changes */
+	return do_mmap2(addr, len, prot, flags, fd, pgoff << 12, PAGE_SHIFT-12);
+}
+#endif
+
 SYSCALL_DEFINE6(mmap, unsigned long, addr, size_t, len,
 		unsigned long, prot, unsigned long, flags,
 		unsigned long, fd, off_t, offset)
-- 
2.34.1