Merge branch 'fix-kernel-hugepage' into 'master'

Fix return code of kernel_set_nr_hugepages()

See merge request !4

lib/kernel/kernel.cpp

@@ -251,16 +251,19 @@ int kernel_get_nr_hugepages()
 int kernel_set_nr_hugepages(int nr)
 {
 	FILE *f;
+	int ret;
 
 	f = fopen(PROCFS_PATH "/sys/vm/nr_hugepages", "w");
 	if (!f) {
-
-		if (access("/.dockerenv", F_OK) != -1) {
+		ret = access("/.dockerenv", F_OK);
+		if (ret != -1) {
 			warning("This functionality is unavailable in this mode. Please run the Docker container in the privileged mode:");
 			warning("    $ docker run --privilged ...");
 		}
 		else
-			serror("Failed to open %s", PROCFS_PATH "/sys/vm/nr_hugepages");
+			warning("Failed to open %s", PROCFS_PATH "/sys/vm/nr_hugepages");
+
+		return -1;
 	}
 
 	fprintf(f, "%d\n", nr);