libceph: kill message trail

The wart that is the ceph message trail can now be removed, because
its only user was the osd client, and the previous patch made that
no longer the case.

The result allows write_partial_msg_pages() to be simplified
considerably.

Signed-off-by: Alex Elder <elder@inktank.com>
Reviewed-by: Josh Durgin <josh.durgin@inktank.com>

1 files changed, 0 insertions, 4 deletions

diff --git a/include/linux/ceph/messenger.h b/include/linux/ceph/messenger.h
index b53b9ef65009..0e4536cc46f0 100644
--- a/include/linux/ceph/messenger.h
+++ b/include/linux/ceph/messenger.h
@@ -69,7 +69,6 @@ struct ceph_messenger {
 #ifdef CONFIG_BLOCK
 #define ceph_msg_has_bio(m)             ((m)->b.type == CEPH_MSG_DATA_BIO)
 #endif /* CONFIG_BLOCK */
-#define ceph_msg_has_trail(m)           ((m)->t.type == CEPH_MSG_DATA_PAGELIST)
 
 enum ceph_msg_data_type {
         CEPH_MSG_DATA_NONE,     /* message contains no data payload */
@@ -155,7 +154,6 @@ struct ceph_msg {
 #ifdef CONFIG_BLOCK
         struct ceph_msg_data    b;      /* bio */
 #endif /* CONFIG_BLOCK */
-        struct ceph_msg_data    t;      /* trail */
 
         struct ceph_connection *con;
         struct list_head list_head;     /* links for connection lists */
@@ -295,8 +293,6 @@ extern void ceph_msg_data_set_pages(struct ceph_msg *msg, struct page **pages,
 extern void ceph_msg_data_set_pagelist(struct ceph_msg *msg,
                                 struct ceph_pagelist *pagelist);
 extern void ceph_msg_data_set_bio(struct ceph_msg *msg, struct bio *bio);
-extern void ceph_msg_data_set_trail(struct ceph_msg *msg,
-                                struct ceph_pagelist *trail);
 
 extern struct ceph_msg *ceph_msg_new(int type, int front_len, gfp_t flags,
                                      bool can_fail);