0002-Remove-SpinLockFree.patch

From 8648b1549eabd62725f0013825667fb5d00ec453 Mon Sep 17 00:00:00 2001
From: Thomas Munro <thomas.munro@gmail.com>
Date: Wed, 31 Jul 2024 17:17:36 +1200
Subject: [PATCH 2/2] Remove SpinLockFree().

This interface has been unused for a long time, except in a test that is
now gone.
---
 src/include/storage/s_lock.h | 5 -----
 src/include/storage/spin.h   | 6 ------
 2 files changed, 11 deletions(-)

diff --git a/src/include/storage/s_lock.h b/src/include/storage/s_lock.h
index 40e2d62ef38..b0fcfce16cf 100644
--- a/src/include/storage/s_lock.h
+++ b/src/include/storage/s_lock.h
@@ -22,10 +22,6 @@
  *	void S_UNLOCK(slock_t *lock)
  *		Unlock a previously acquired lock.
  *
- *	bool S_LOCK_FREE(slock_t *lock)
- *		Tests if the lock is free. Returns true if free, false if locked.
- *		This does *not* change the state of the lock.
- *
  *	void SPIN_DELAY(void)
  *		Delay operation to occur inside spinlock wait loop.
  *
@@ -51,7 +47,6 @@ typedef pg_atomic_flag slock_t;
 #define S_INIT_LOCK(lock) pg_atomic_init_flag(lock)
 #define S_LOCK(lock) (pg_atomic_test_set_flag(lock) ? 0 : s_lock((lock), __FILE__, __LINE__, __func__))
 #define S_UNLOCK(lock) pg_atomic_clear_flag(lock)
-#define S_LOCK_FREE(lock) (pg_atomic_unlocked_test_flag(lock))
 #define SPIN_DELAY() pg_spin_delay()
 
 /*
diff --git a/src/include/storage/spin.h b/src/include/storage/spin.h
index 3ae2a56d073..d4dea2a98ff 100644
--- a/src/include/storage/spin.h
+++ b/src/include/storage/spin.h
@@ -18,10 +18,6 @@
  *	void SpinLockRelease(volatile slock_t *lock)
  *		Unlock a previously acquired lock.
  *
- *	bool SpinLockFree(slock_t *lock)
- *		Tests if the lock is free. Returns true if free, false if locked.
- *		This does *not* change the state of the lock.
- *
  *	Callers must beware that the macro argument may be evaluated multiple
  *	times!
  *
@@ -60,6 +56,4 @@
 
 #define SpinLockRelease(lock) S_UNLOCK(lock)
 
-#define SpinLockFree(lock)	S_LOCK_FREE(lock)
-
 #endif							/* SPIN_H */
-- 
2.45.2