diff -Nru mdadm-4.3.orig/mdadm.h mdadm-4.3/mdadm.h
--- mdadm-4.3.orig/mdadm.h	2024-02-22 10:01:11.637922391 +0100
+++ mdadm-4.3/mdadm.h	2024-02-22 10:01:31.351255810 +0100
@@ -1775,7 +1775,7 @@
 bool stat_is_md_dev(struct stat *st);
 extern char *fd2devnm(int fd);
 
-extern int in_initrd(void);
+extern int mdadm_in_initrd(void);
 
 struct cmap_hooks {
 	void *cmap_handle;      /* corosync lib related */
diff -Nru mdadm-4.3.orig/mdmon.c mdadm-4.3/mdmon.c
--- mdadm-4.3.orig/mdmon.c	2024-02-22 10:01:11.637922391 +0100
+++ mdadm-4.3/mdmon.c	2024-02-22 10:01:31.351255810 +0100
@@ -358,7 +358,7 @@
 		}
 	}
 
-	if (in_initrd()) {
+	if (mdadm_in_initrd()) {
 		/*
 		 * set first char of argv[0] to @. This is used by
 		 * systemd to signal that the task was launched from
diff -Nru mdadm-4.3.orig/util.c mdadm-4.3/util.c
--- mdadm-4.3.orig/util.c	2024-02-22 10:01:11.641255725 +0100
+++ mdadm-4.3/util.c	2024-02-22 10:03:34.587922997 +0100
@@ -1960,7 +1960,7 @@
 	int len;
 	pid_t pid;
 	int status;
-	char *prefix = in_initrd() ? "initrd-" : "";
+	char *prefix = mdadm_in_initrd() ? "initrd-" : "";
 	char pathbuf[1024];
 	char *paths[4] = {
 		pathbuf,
@@ -2270,7 +2270,7 @@
 	return 0;
 }
 
-int in_initrd(void)
+int mdadm_in_initrd(void)
 {
 	return access("/etc/initrd-release", F_OK) >= 0;
 }