[PATCH 1/4] x86: Fix ptrdiff_t for x86_64

[Richard Weinberger]

sbrk() assumes ptrdiff_t is large enough to enlarge/shrink the heap
by LONG_MIN/LONG_MAX.
So, use the long type, also to match the rest of the Linux ecosystem.

Signed-off-by: Richard Weinberger <richard at nod.at>
---
 arch/x86/include/asm/posix_types.h | 3 ++-
 1 file changed, 2 insertions(+), 1 deletion(-)

diff --git a/arch/x86/include/asm/posix_types.h b/arch/x86/include/asm/posix_types.h
index dbcea7f47f..e1ed9bcabc 100644
--- a/arch/x86/include/asm/posix_types.h
+++ b/arch/x86/include/asm/posix_types.h
@@ -20,11 +20,12 @@ typedef unsigned short	__kernel_gid_t;
 #if defined(__x86_64__)
 typedef unsigned long	__kernel_size_t;
 typedef long		__kernel_ssize_t;
+typedef long		__kernel_ptrdiff_t;
 #else
 typedef unsigned int	__kernel_size_t;
 typedef int		__kernel_ssize_t;
-#endif
 typedef int		__kernel_ptrdiff_t;
+#endif
 typedef long		__kernel_time_t;
 typedef long		__kernel_suseconds_t;
 typedef long		__kernel_clock_t;
-- 
2.35.3