libceph: isolate other message data fields
Define ceph_msg_data_set_pagelist(), ceph_msg_data_set_bio(), and
ceph_msg_data_set_trail() to clearly abstract the assignment of the
remaining data-related fields in a ceph message structure. Use the
new functions in the osd client and mds client.
This partially resolves:
http://tracker.ceph.com/issues/4263
Signed-off-by: Alex Elder <elder@inktank.com>
Reviewed-by: Josh Durgin <josh.durgin@inktank.com>
diff --git a/net/ceph/messenger.c b/net/ceph/messenger.c
index fc59fcc..d118353 100644
--- a/net/ceph/messenger.c
+++ b/net/ceph/messenger.c
@@ -2701,6 +2701,34 @@
}
EXPORT_SYMBOL(ceph_msg_data_set_pages);
+void ceph_msg_data_set_pagelist(struct ceph_msg *msg,
+ struct ceph_pagelist *pagelist)
+{
+ /* BUG_ON(!pagelist); */
+ /* BUG_ON(msg->pagelist); */
+
+ msg->pagelist = pagelist;
+}
+EXPORT_SYMBOL(ceph_msg_data_set_pagelist);
+
+void ceph_msg_data_set_bio(struct ceph_msg *msg, struct bio *bio)
+{
+ /* BUG_ON(!bio); */
+ /* BUG_ON(msg->bio); */
+
+ msg->bio = bio;
+}
+EXPORT_SYMBOL(ceph_msg_data_set_bio);
+
+void ceph_msg_data_set_trail(struct ceph_msg *msg, struct ceph_pagelist *trail)
+{
+ /* BUG_ON(!trail); */
+ /* BUG_ON(msg->trail); */
+
+ msg->trail = trail;
+}
+EXPORT_SYMBOL(ceph_msg_data_set_trail);
+
/*
* construct a new message with given type, size
* the new msg has a ref count of 1.