memory/HugeArray: add method Populate()

Author: MaxKellermann

src/memory/HugeArray.hxx

@@ -6,6 +6,10 @@
 #include "HugeAllocator.hxx"
 #include "util/SpanCast.hxx"
 
+#ifdef __linux__
+#include "system/PageAllocator.hxx"
+#endif
+
 #include <utility>
 
 /**
@@ -51,6 +55,10 @@ public:
 		HugeForkCow(std::as_writable_bytes(buffer), enable);
 	}
 
+	void Populate() noexcept {
+		HugePopulate(std::as_writable_bytes(buffer));
+	}
+
 	void Discard() noexcept {
 		HugeDiscard(std::as_writable_bytes(buffer));
 	}