osd, osdc: drop the unused outdata feature of PGLSFilter.

Before this commit PGLSFilter interface was offering the outdata
parameter in its filter() method:

  filter(..., bufferlist& outdata)

OSD was serializing and appending the bufferlist to response to
CEPH_OSD_OP_PGLS_FILTER and CEPH_OSD_OP_PGNLS_FILTER operations.
At the Objecter's side these extra bits were being parsed and
finally stored in NListContext::extra_info. However, it really
looks this member is not used anywhere.

The commit removes the outdata handling on multiple layers: from
PGLSFilter implementations, through OSD till Objecter.

Signed-off-by: Radoslaw Zarzynski <rzarzyns@redhat.com>

1 files changed, 2 insertions, 4 deletions

diff --git a/src/cls/cephfs/cls_cephfs.cc b/src/cls/cephfs/cls_cephfs.cc
index 7e3214b9246..3500ae6e497 100644
--- a/src/cls/cephfs/cls_cephfs.cc
+++ b/src/cls/cephfs/cls_cephfs.cc
@@ -146,12 +146,10 @@ public:
 
   ~PGLSCephFSFilter() override {}
   bool reject_empty_xattr() override { return false; }
-  bool filter(const hobject_t &obj, bufferlist& xattr_data,
-                      bufferlist& outdata) override;
+  bool filter(const hobject_t &obj, bufferlist& xattr_data) override;
 };
 
-bool PGLSCephFSFilter::filter(const hobject_t &obj,
-                             bufferlist& xattr_data, bufferlist& outdata)
+bool PGLSCephFSFilter::filter(const hobject_t &obj, bufferlist& xattr_data)
 {
   const std::string need_ending = ".00000000";
   const std::string &obj_name = obj.oid.name;