--- IO-AIO/configure	2017/06/23 03:23:19	1.18
+++ IO-AIO/configure	2017/09/22 05:20:39	1.20
@@ -4201,6 +4201,41 @@
 
 
 
+{ $as_echo "$as_me:${as_lineno-$LINENO}: checking for set/getrlimit" >&5
+$as_echo_n "checking for set/getrlimit... " >&6; }
+if ${ac_cv_rlimits+:} false; then :
+  $as_echo_n "(cached) " >&6
+else
+  cat confdefs.h - <<_ACEOF >conftest.$ac_ext
+/* end confdefs.h.  */
+
+#include <sys/time.h>
+#include <sys/resource.h>
+int res;
+int main (void)
+{
+   struct rlimit srl;
+   srl.rlim_cur = srl.rlim_max = RLIM_INFINITY;
+   res = getrlimit (RLIMIT_NOFILE, &srl);
+   res = setrlimit (RLIMIT_NOFILE, &srl);
+   return 0;
+}
+
+_ACEOF
+if ac_fn_c_try_link "$LINENO"; then :
+  ac_cv_rlimits=yes
+else
+  ac_cv_rlimits=no
+fi
+rm -f core conftest.err conftest.$ac_objext \
+    conftest$ac_exeext conftest.$ac_ext
+fi
+{ $as_echo "$as_me:${as_lineno-$LINENO}: result: $ac_cv_rlimits" >&5
+$as_echo "$ac_cv_rlimits" >&6; }
+test $ac_cv_rlimits = yes &&
+$as_echo "#define HAVE_RLIMITS 1" >>confdefs.h
+
+
 { $as_echo "$as_me:${as_lineno-$LINENO}: checking for posix_madvise" >&5
 $as_echo_n "checking for posix_madvise... " >&6; }
 if ${ac_cv_posix_madvise+:} false; then :
@@ -4383,6 +4418,40 @@
 $as_echo "#define HAVE_RENAMEAT2 1" >>confdefs.h
 
 
+{ $as_echo "$as_me:${as_lineno-$LINENO}: checking for copy_file_range" >&5
+$as_echo_n "checking for copy_file_range... " >&6; }
+if ${ac_cv_copy_file_range+:} false; then :
+  $as_echo_n "(cached) " >&6
+else
+  cat confdefs.h - <<_ACEOF >conftest.$ac_ext
+/* end confdefs.h.  */
+
+#include <unistd.h>
+#include <sys/syscall.h>
+/*#include <linux/copy.h>*/
+int res;
+int main (void)
+{
+   /*res = syscall (SYS_copy_file_range, 0, 0, 0, 0, 0, COPY_FR_REFLINK | COPY_FR_DEDUP | COPY_FR_COPY);*/
+   res = syscall (SYS_copy_file_range, 0, 0, 0, 0, 0, 0);
+   return 0;
+}
+
+_ACEOF
+if ac_fn_c_try_link "$LINENO"; then :
+  ac_cv_copy_file_range=yes
+else
+  ac_cv_copy_file_range=no
+fi
+rm -f core conftest.err conftest.$ac_objext \
+    conftest$ac_exeext conftest.$ac_ext
+fi
+{ $as_echo "$as_me:${as_lineno-$LINENO}: result: $ac_cv_copy_file_range" >&5
+$as_echo "$ac_cv_copy_file_range" >&6; }
+test $ac_cv_copy_file_range = yes &&
+$as_echo "#define HAVE_COPY_FILE_RANGE 1" >>confdefs.h
+
+
 
 
 cat >confcache <<\_ACEOF