MDEV-21382 fix compilation without perfschema plugin

Author: kevgs

storage/innobase/include/os0file.h

@@ -1141,6 +1141,9 @@ to original un-instrumented file I/O APIs */
 
 # define os_file_flush(file)	os_file_flush_func(file)
 
+#define os_file_flush_data(file)                                              \
+  pfs_os_file_flush_data_func(file, __FILE__, __LINE__)
+
 # define os_file_rename(key, oldpath, newpath)				\
 	os_file_rename_func(oldpath, newpath)
 
@@ -1220,6 +1223,14 @@ bool
 os_file_flush_func(
 	os_file_t	file);
 
+/** NOTE! Use the corresponding macro os_file_flush_data(), not directly this
+function!
+Flushes only(!) data (excluding metadata) from OS page cache of a given file to
+the disk.
+@param[in]	file		handle to a file
+@return true if success */
+bool os_file_flush_data_func(os_file_t file);
+
 /** Retrieves the last error number if an error occurs in a file io function.
 The number should be retrieved before any other OS calls (because they may
 overwrite the error number). If the number is not known to this program,

storage/innobase/os/os0file.cc

@@ -4615,6 +4615,18 @@ os_normalize_path(
 	}
 }
 
+bool os_file_flush_data_func(os_file_t file) {
+#ifdef _WIN32
+  return os_file_flush_func(file);
+#else
+  bool success= fdatasync(file) != -1;
+  if (!success) {
+    ib::error() << "fdatasync() errno: " << errno;
+  }
+  return success;
+#endif
+}
+
 bool pfs_os_file_flush_data_func(pfs_os_file_t file, const char *src_file,
                                  uint src_line)
 {
@@ -4624,14 +4636,8 @@ bool pfs_os_file_flush_data_func(pfs_os_file_t file, const char *src_file,
   register_pfs_file_io_begin(&state, locker, file, 0, PSI_FILE_SYNC, src_file,
                              src_line);
 
-#ifdef _WIN32
-  bool result= os_file_flush_func(file);
-#else
-  bool result= true;
-  if (fdatasync(file) == -1)
-    ib::error() << "fdatasync() errno: " << errno;
-#endif
+  bool success= os_file_flush_data_func(file);
 
   register_pfs_file_io_end(locker, 0);
-  return result;
+  return success;
 }