libceph: record bio length

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>
Reviewed-by: Josh Durgin <josh.durgin@inktank.com>

1 files changed, 4 insertions, 1 deletions

diff --git a/include/linux/ceph/messenger.h b/include/linux/ceph/messenger.h
index cdeebae03e0d..4fb870a5b5fc 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. */