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diff --git a/xlators/performance/readdir-ahead/src/readdir-ahead-messages.h b/xlators/performance/readdir-ahead/src/readdir-ahead-messages.h
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+++ b/xlators/performance/readdir-ahead/src/readdir-ahead-messages.h
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+/*Copyright (c) 2015 Red Hat, Inc. <http://www.redhat.com>
+  This file is part of GlusterFS.
+
+  This file is licensed to you under your choice of the GNU Lesser
+  General Public License, version 3 or any later version (LGPLv3 or
+  later), or the GNU General Public License, version 2 (GPLv2), in all
+  cases as published by the Free Software Foundation.
+*/
+
+#ifndef _READDIR_AHEAD_MESSAGES_H_
+#define _READDIR_AHEAD_MESSAGES_H_
+
+#include "glfs-message-id.h"
+
+/*! \file readdir-ahead-messages.h
+ *  \brief READDIR_AHEAD log-message IDs and their descriptions
+ *
+ */
+
+/* NOTE: Rules for message additions
+ * 1) Each instance of a message is _better_ left with a unique message ID, even
+ *    if the message format is the same. Reasoning is that, if the message
+ *    format needs to change in one instance, the other instances are not
+ *    impacted or the new change does not change the ID of the instance being
+ *    modified.
+ * 2) Addition of a message,
+ *       - Should increment the GLFS_NUM_MESSAGES
+ *       - Append to the list of messages defined, towards the end
+ *       - Retain macro naming as glfs_msg_X (for redability across developers)
+ * NOTE: Rules for message format modifications
+ * 3) Check acorss the code if the message ID macro in question is reused
+ *    anywhere. If reused then then the modifications should ensure correctness
+ *    everywhere, or needs a new message ID as (1) above was not adhered to. If
+ *    not used anywhere, proceed with the required modification.
+ * NOTE: Rules for message deletion
+ * 4) Check (3) and if used anywhere else, then cannot be deleted. If not used
+ *    anywhere, then can be deleted, but will leave a hole by design, as
+ *    addition rules specify modification to the end of the list and not filling
+ *    holes.
+ */
+
+#define GLFS_READDIR_AHEAD_BASE                   GLFS_MSGID_COMP_READDIR_AHEAD
+#define GLFS_READDIR_AHEAD_NUM_MESSAGES           5
+#define GLFS_MSGID_END          (GLFS_READDIR_AHEAD_BASE +\
+        GLFS_READDIR_AHEAD_NUM_MESSAGES + 1)
+
+/* Messages with message IDs */
+#define glfs_msg_start_x GLFS_READDIR_AHEAD_BASE, "Invalid: Start of messages"
+
+
+
+
+/*!
+ * @messageid
+ * @diagnosis
+ * @recommendedaction  None
+ *
+ */
+
+#define READDIR_AHEAD_MSG_XLATOR_CHILD_MISCONFIGURED\
+        (GLFS_READDIR_AHEAD_BASE + 1)
+
+/*!
+ * @messageid
+ * @diagnosis
+ * @recommendedaction  None
+ *
+ */
+
+#define READDIR_AHEAD_MSG_VOL_MISCONFIGURED        (GLFS_READDIR_AHEAD_BASE + 2)
+
+/*!
+ * @messageid
+ * @diagnosis
+ * @recommendedaction  None
+ *
+ */
+
+#define READDIR_AHEAD_MSG_NO_MEMORY        (GLFS_READDIR_AHEAD_BASE + 3)
+
+/*!
+ * @messageid
+ * @diagnosis
+ * @recommendedaction  None
+ *
+ */
+
+#define READDIR_AHEAD_MSG_DIR_RELEASE_PENDING_STUB \
+        (GLFS_READDIR_AHEAD_BASE + 4)
+
+/*!
+ * @messageid
+ * @diagnosis
+ * @recommendedaction  None
+ *
+ */
+
+#define READDIR_AHEAD_MSG_OUT_OF_SEQUENCE        (GLFS_READDIR_AHEAD_BASE + 5)
+
+
+/*------------*/
+#define glfs_msg_end_x GLFS_MSGID_END, "Invalid: End of messages"
+
+
+#endif /* _READDIR_AHEAD_MESSAGES_H_ */