libceph: kill off osd request r_data_in and r_data_out

Finally!  Convert the osd op data pointers into real structures, and
make the switch over to using them instead of having all ops share
the in and/or out data structures in the osd request.

Set up a new function to traverse the set of ops and release any
data associated with them (pages).

This and the patches leading up to it resolve:
    http://tracker.ceph.com/issues/4657

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

1 files changed, 3 insertions, 6 deletions

diff --git a/include/linux/ceph/osd_client.h b/include/linux/ceph/osd_client.h
index dd4ca4ba8cab..4ec46c0ceaf7 100644
--- a/include/linux/ceph/osd_client.h
+++ b/include/linux/ceph/osd_client.h
@@ -87,14 +87,14 @@ struct ceph_osd_req_op {
                         u64 offset, length;
                         u64 truncate_size;
                         u32 truncate_seq;
-                        struct ceph_osd_data *osd_data;
+                        struct ceph_osd_data osd_data;
                 } extent;
                 struct {
                         const char *class_name;
                         const char *method_name;
                         const void *request_data;
-                        struct ceph_osd_data *request_info;
-                        struct ceph_osd_data *response_data;
+                        struct ceph_osd_data request_info;
+                        struct ceph_osd_data response_data;
                         u32 request_data_len;
                         __u8 class_len;
                         __u8 method_len;
@@ -164,9 +164,6 @@ struct ceph_osd_request {
 
         struct ceph_file_layout r_file_layout;
         struct ceph_snap_context *r_snapc;    /* snap context for writes */
-
-        struct ceph_osd_data r_data_in;
-        struct ceph_osd_data r_data_out;
 };
 
 struct ceph_osd_event {