From 97fb1c7f6637ee61c90b8bc186d464cfd426b063 Mon Sep 17 00:00:00 2001
From: Alex Elder <elder@inktank.com>
Date: Fri, 1 Mar 2013 18:00:16 -0600
Subject: libceph: define ceph_msg_has_*() data macros
Define and use macros ceph_msg_has_*() to determine whether to
operate on the pages, pagelist, bio, and trail fields of a message.
Signed-off-by: Alex Elder <elder@inktank.com>
Reviewed-by: Josh Durgin <josh.durgin@inktank.com>
---
include/linux/ceph/messenger.h | 7 +++++++
1 file changed, 7 insertions(+)
(limited to 'include/linux/ceph')
diff --git a/include/linux/ceph/messenger.h b/include/linux/ceph/messenger.h
index 1991a6f9dc90..889fe4720133 100644
--- a/include/linux/ceph/messenger.h
+++ b/include/linux/ceph/messenger.h
@@ -64,6 +64,13 @@ struct ceph_messenger {
u32 required_features;
};
+#define ceph_msg_has_pages(m) ((m)->pages != NULL)
+#define ceph_msg_has_pagelist(m) ((m)->pagelist != NULL)
+#ifdef CONFIG_BLOCK
+#define ceph_msg_has_bio(m) ((m)->bio != NULL)
+#endif /* CONFIG_BLOCK */
+#define ceph_msg_has_trail(m) ((m)->trail != NULL)
+
/*
* a single message. it contains a header (src, dest, message type, etc.),
* footer (crc values, mainly), a "front" message body, and possibly a
--
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