diff --git a/src/backend/postmaster/fork_process.c b/src/backend/postmaster/fork_process.c
index f6df2de..7b9bc38 100644
--- a/src/backend/postmaster/fork_process.c
+++ b/src/backend/postmaster/fork_process.c
@@ -22,6 +22,11 @@
 #endif
 
 #ifndef WIN32
+
+#ifdef __linux__
+int linux_oom_score_adj = 0;
+#endif
+
 /*
  * Wrapper for fork(). Return values are the same as those for fork():
  * -1 if the fork failed, 0 in the child process, and the PID of the
@@ -78,7 +83,7 @@ fork_process(void)
 		 * LINUX_OOM_SCORE_ADJ #defined to 0, or to some other value that you
 		 * want child processes to adopt here.
 		 */
-#ifdef LINUX_OOM_SCORE_ADJ
+#ifdef __linux__
 		{
 			/*
 			 * Use open() not stdio, to ensure we control the open flags. Some
@@ -92,13 +97,12 @@ fork_process(void)
 				char		buf[16];
 				int			rc;
 
-				snprintf(buf, sizeof(buf), "%d\n", LINUX_OOM_SCORE_ADJ);
+				snprintf(buf, sizeof(buf), "%d\n", linux_oom_score_adj);
 				rc = write(fd, buf, strlen(buf));
 				(void) rc;
 				close(fd);
 			}
 		}
-#endif   /* LINUX_OOM_SCORE_ADJ */
 
 		/*
 		 * Older Linux kernels have oom_adj not oom_score_adj.  This works
@@ -106,7 +110,6 @@ fork_process(void)
 		 * it's necessary to build Postgres to work with either API, you can
 		 * define both LINUX_OOM_SCORE_ADJ and LINUX_OOM_ADJ.
 		 */
-#ifdef LINUX_OOM_ADJ
 		{
 			/*
 			 * Use open() not stdio, to ensure we control the open flags. Some
@@ -120,13 +123,13 @@ fork_process(void)
 				char		buf[16];
 				int			rc;
 
-				snprintf(buf, sizeof(buf), "%d\n", LINUX_OOM_ADJ);
+				snprintf(buf, sizeof(buf), "%d\n", linux_oom_score_adj);
 				rc = write(fd, buf, strlen(buf));
 				(void) rc;
 				close(fd);
 			}
 		}
-#endif   /* LINUX_OOM_ADJ */
+#endif   /* __linux__ */
 
 		/*
 		 * Make sure processes do not share OpenSSL randomness state.
diff --git a/src/backend/utils/misc/guc.c b/src/backend/utils/misc/guc.c
index 1d094f0..8713abb 100644
--- a/src/backend/utils/misc/guc.c
+++ b/src/backend/utils/misc/guc.c
@@ -128,6 +128,7 @@ extern bool synchronize_seqscans;
 extern char *SSLCipherSuites;
 extern char *SSLECDHCurve;
 extern bool SSLPreferServerCiphers;
+extern int	linux_oom_score_adj;
 
 #ifdef TRACE_SORT
 extern bool trace_sort;
@@ -2554,6 +2555,18 @@ static struct config_int ConfigureNamesInt[] =
 		NULL, NULL, NULL
 	},
 
+#ifdef __linux__
+	{
+		{"linux_oom_score_adj", PGC_POSTMASTER, RESOURCES_KERNEL,
+			gettext_noop("Sets the oom_score_adj parameter of postmaster's child processes."),
+			NULL,
+		},
+		&linux_oom_score_adj,
+		0, -1000, 1000,
+		NULL, NULL, NULL
+	},
+#endif /* __linux__ */
+
 	/* End-of-list marker */
 	{
 		{NULL, 0, 0, NULL, NULL}, NULL, 0, 0, 0, NULL, NULL, NULL