mmap: Check if size exceeds available memory when MAP_HUGETLB

If size exceeds, mmap fails and set -ENOMEM

Change-Id: I4f0d6e18ee3a7c8e32e251b7ed07ee9f76305603
Refs: #1183

test/issues/1183/Makefile

@@ -0,0 +1,17 @@
+CC = gcc
+TARGET=hugemap
+
+CPPFLAGS =
+LDFLAGS =
+
+all: $(TARGET)
+
+hugemap: hugemap.c
+	$(CC) -o $@ $^ $(LDFLAGS)
+
+test: all
+	@sh ./C1183.sh
+
+clean:
+	rm -f $(TARGET) *.o
+