Try statx syscall

git-svn-id: svn+ssh://ci.ruby-lang.org/ruby/trunk@67093 b2dd03c8-39d4-4d8f-98ff-823fe69b080e

file.c

@@ -1112,6 +1112,23 @@ stat_without_gvl(const char *path, struct stat *st)
 						  RUBY_UBF_IO, NULL);
 }
 
+#if !defined HAVE_STATX && defined __linux__
+# ifdef HAVE_SYSCALL_H
+#   include <syscall.h>
+# elif defined HAVE_SYS_SYSCALL_H
+#   include <sys/syscall.h>
+# endif
+# if defined __NR_statx
+#   include <linux/stat.h>
+static int statx(int dirfd, const char *pathname, int flags,
+                 unsigned int mask, struct statx *statxbuf)
+{
+    return syscall(__NR_statx, dirfd, pathname, flags, mask, statxbuf);
+}
+#   define HAVE_STATX
+# endif
+#endif
+
 #ifdef HAVE_STATX
 typedef struct no_gvl_statx_data {
     struct statx *stx;