fix: madvise changes only the first one of vm_ranges

Change-Id: I83248c1162e28c3c24ca5f6b0933e1a8ca434d6b
Fujitsu: POSTK_DEBUG_TEMP_FIX_37
Refs: #1351

test/issues/1351/C1351.c

@@ -0,0 +1,74 @@
+#include <unistd.h>
+#include <stdlib.h>
+#include <stdio.h>
+#include <sys/mman.h>
+#include <string.h>
+#include <sys/types.h>
+#include <sys/stat.h>
+#include <fcntl.h>
+#include <errno.h>
+#include <sys/wait.h>
+#include <sys/ipc.h>
+#include <sys/shm.h>
+#include <inttypes.h>
+
+#define MAP_HUGE_SHIFT 26
+#define MADV_SHOW_ATTR 201 /* for TEST */
+#define RANGE_NUM 3
+#define PAGE_NUM 2
+
+int main(int argc, char **argv)
+{
+	void *mems[RANGE_NUM];
+	int ret = 0;
+	int i, rc, fd;
+	int fds[RANGE_NUM];
+	int  pgnum;
+	size_t pgsize, map_size, def_pgsize = getpagesize();
+
+	if ((fd = open("TestFile", O_RDWR | O_CREAT, 0666)) == -1) {
+		perror("open");
+		return -1;
+	}
+
+	pgsize = getpagesize();
+	map_size = pgsize * PAGE_NUM;
+
+	for (i = 0; i < RANGE_NUM; i++) {
+		mems[i] = mmap(0, map_size, PROT_READ | PROT_WRITE,
+				MAP_SHARED, fd, 0);
+	}
+	for (i = 0; i < RANGE_NUM; i++) {
+		if (i > 0) {
+			if (mems[i] != mems[i - 1] + map_size) {
+				printf("maps is not continuous\n");
+				ret = -1;
+				goto out;
+			}
+		}
+	}
+	printf("** mmap continuous areas: Done\n");
+
+	rc = madvise(mems[0], map_size * RANGE_NUM, MADV_DONTDUMP);
+	if (rc != 0) {
+		perror("madvise MADV_DONTDUMP");
+		ret = -1;
+		goto out;
+	}
+	printf("** madvise MADV_DONTDUMP: Done\n");
+
+	rc = madvise(mems[0], map_size * RANGE_NUM, MADV_SHOW_ATTR);
+	if (rc != 0) {
+		perror("madvise MAD_SHOW_ATTR");
+		ret = -1;
+		goto out;
+	}
+	printf("** madvise MADV_SHOW_ATTR: Done\n");
+
+	munmap(mems[0], map_size * RANGE_NUM);
+
+out:
+	close(fd);
+
+	return ret;
+}