[PATCH 1/6] libceph: record bio length

[Alex Elder <elder@inktank.com>]

The bio is the only data item type that doesn't record its full
length.  Fix that.

Signed-off-by: Alex Elder <elder@inktank.com>
---
 include/linux/ceph/messenger.h |    5 ++++-
 net/ceph/messenger.c           |    1 +
 2 files changed, 5 insertions(+), 1 deletion(-)

diff --git a/include/linux/ceph/messenger.h b/include/linux/ceph/messenger.h
index cdeebae..4fb870a 100644
--- a/include/linux/ceph/messenger.h
+++ b/include/linux/ceph/messenger.h
@@ -116,7 +116,10 @@ struct ceph_msg_data {
 	enum ceph_msg_data_type		type;
 	union {
 #ifdef CONFIG_BLOCK
-		struct bio		*bio;
+		struct {
+			struct bio	*bio;
+			size_t		bio_length;
+		};
 #endif /* CONFIG_BLOCK */
 		struct {
 			struct page	**pages;	/* NOT OWNER. */
diff --git a/net/ceph/messenger.c b/net/ceph/messenger.c
index ae825e44..9571d03 100644
--- a/net/ceph/messenger.c
+++ b/net/ceph/messenger.c
@@ -3030,6 +3030,7 @@ void ceph_msg_data_set_bio(struct ceph_msg *msg,
struct bio *bio,
 	data = ceph_msg_data_create(CEPH_MSG_DATA_BIO);
 	BUG_ON(!data);
 	data->bio = bio;
+	data->bio_length = length;

 	msg->data = data;
 	msg->data_length = length;
-- 
1.7.9.5