[PATCH liburing] arch/syscall: Use __NR_mmap2 existence for preprocessor condition

[Alviro Iskandar Setiawan <alviro.iskandar@xxxxxxxxxxx>]

Now __NR_mmap2 is only used for i386. But it is also needed for other
archs like ARM and RISCV32. Decide to use it based on the __NR_mmap2
definition as it's not defined on other archs. Currently, this has no
effect because other archs use the generic mmap definition from libc.

Signed-off-by: Alviro Iskandar Setiawan <alviro.iskandar@xxxxxxxxxxx>
---
 src/arch/syscall-defs.h | 2 +-
 1 file changed, 1 insertion(+), 1 deletion(-)

diff --git a/src/arch/syscall-defs.h b/src/arch/syscall-defs.h
index 9ddac45..374aa0d 100644
--- a/src/arch/syscall-defs.h
+++ b/src/arch/syscall-defs.h
@@ -27,7 +27,7 @@ static inline void *__sys_mmap(void *addr, size_t length, int prot, int flags,
 {
 	int nr;
 
-#if defined(__i386__)
+#if defined(__NR_mmap2)
 	nr = __NR_mmap2;
 	offset >>= 12;
 #else
-- 
Alviro Iskandar Setiawan