From e79985dbf21acec5915e5ee75a42a34db0540848 Mon Sep 17 00:00:00 2001
From: Ben Huntsman <ben@huntsmans.net>
Date: Mon, 2 Dec 2024 16:43:57 -0800
Subject: [PATCH] rx: Use sys/atomic_op.h on AIX 4.1+

Since commit 4505af8002 (aix: add atomic support), rx_atomic.h has used
sys/atomic_op.h on AIX 6.1 and newer, but sys/atomic_op.h is available
as far back as AIX 4.1. So, use sys/atomic_op.h on AIX 4.1+, so older
versions of AIX can use proper atomics instead of the fallback
implementation.

Change-Id: I49e2f257abe05c25aaebe06847c5230392a93780
Reviewed-on: https://gerrit.openafs.org/15975
Reviewed-by: Michael Meffie <mmeffie@sinenomine.net>
Tested-by: BuildBot <buildbot@rampaginggeek.com>
Reviewed-by: Mark Vitale <mvitale@sinenomine.net>
Reviewed-by: Andrew Deason <adeason@sinenomine.net>
---
 src/rx/rx_atomic.h | 2 +-
 1 file changed, 1 insertion(+), 1 deletion(-)

diff --git a/src/rx/rx_atomic.h b/src/rx/rx_atomic.h
index cbe3587b9e..b42db5136f 100644
--- a/src/rx/rx_atomic.h
+++ b/src/rx/rx_atomic.h
@@ -86,7 +86,7 @@ rx_atomic_sub(rx_atomic_t *atomic, int change)
     InterlockedExchangeAdd(&atomic->var, 0 - change);
 }
 
-#elif defined(AFS_AIX61_ENV) || defined(AFS_USR_AIX61_ENV)
+#elif defined(AFS_AIX41_ENV) || defined(AFS_USR_AIX41_ENV)
 # include <sys/atomic_op.h>
 
 typedef struct {