5 files changed, 2 insertions, 10 deletions
diff --git a/src/backend/postmaster/launch_backend.c b/src/backend/postmaster/launch_backend.c
index bb1b0ac2b9c..49e4be4b399 100644
--- a/src/backend/postmaster/launch_backend.c
+++ b/src/backend/postmaster/launch_backend.c
@@ -672,13 +672,11 @@ SubPostmasterMain(int argc, char *argv[])
  * The following need to be available to the save/restore_backend_variables
  * functions.  They are marked NON_EXEC_STATIC in their home modules.
  */
-extern slock_t *ShmemLock;
 extern slock_t *ProcStructLock;
 extern PGPROC *AuxiliaryProcs;
 extern PMSignalData *PMSignalState;
 extern pg_time_t first_syslogger_file_time;
 extern struct bkend *ShmemBackendArray;
-extern bool redirection_done;
 
 #ifndef WIN32
 #define write_inheritable_socket(dest, src, childpid) ((*(dest) = (src)), true)
diff --git a/src/backend/postmaster/postmaster.c b/src/backend/postmaster/postmaster.c
index bf0241aed0c..97c8332c84d 100644
--- a/src/backend/postmaster/postmaster.c
+++ b/src/backend/postmaster/postmaster.c
@@ -179,7 +179,7 @@ typedef struct bkend
 static dlist_head BackendList = DLIST_STATIC_INIT(BackendList);
 
 #ifdef EXEC_BACKEND
-Backend    *ShmemBackendArray;
+NON_EXEC_STATIC Backend *ShmemBackendArray;
 #endif
 
 BackgroundWorker *MyBgworkerEntry = NULL;
diff --git a/src/backend/postmaster/syslogger.c b/src/backend/postmaster/syslogger.c
index 437947dbb9d..7951599fa87 100644
--- a/src/backend/postmaster/syslogger.c
+++ b/src/backend/postmaster/syslogger.c
@@ -75,8 +75,6 @@ char	   *Log_filename = NULL;
 bool		Log_truncate_on_rotation = false;
 int			Log_file_mode = S_IRUSR | S_IWUSR;
 
-extern bool redirection_done;
-
 /*
  * Private state
  */
diff --git a/src/backend/storage/lmgr/lwlock.c b/src/backend/storage/lmgr/lwlock.c
index b1e388dc7c9..e765754d805 100644
--- a/src/backend/storage/lmgr/lwlock.c
+++ b/src/backend/storage/lmgr/lwlock.c
@@ -91,9 +91,6 @@
 #endif
 
 
-/* We use the ShmemLock spinlock to protect LWLockCounter */
-extern slock_t *ShmemLock;
-
 #define LW_FLAG_HAS_WAITERS			((uint32) 1 << 30)
 #define LW_FLAG_RELEASE_OK			((uint32) 1 << 29)
 #define LW_FLAG_LOCKED				((uint32) 1 << 28)
@@ -609,6 +606,7 @@ LWLockNewTrancheId(void)
 	int		   *LWLockCounter;
 
 	LWLockCounter = (int *) ((char *) MainLWLockArray - sizeof(int));
+	/* We use the ShmemLock spinlock to protect LWLockCounter */
 	SpinLockAcquire(ShmemLock);
 	result = (*LWLockCounter)++;
 	SpinLockRelease(ShmemLock);
diff --git a/src/backend/utils/error/elog.c b/src/backend/utils/error/elog.c
index d1d1632bdd4..3e42f5754fe 100644
--- a/src/backend/utils/error/elog.c
+++ b/src/backend/utils/error/elog.c
@@ -95,8 +95,6 @@ ErrorContextCallback *error_context_stack = NULL;
 
 sigjmp_buf *PG_exception_stack = NULL;
 
-extern bool redirection_done;
-
 /*
  * Hook for intercepting messages before they are sent to the server log.
  * Note that the hook will not get called for messages that are suppressed