From a3d76d61ec0dab59e961a0e7a828f0435c702e53 Mon Sep 17 00:00:00 2001
From: "Yan, Zheng" <zyan@redhat.com>
Date: Thu, 5 Apr 2018 08:09:44 +0800
Subject: [PATCH] mds: remove unused MDCache::snaprealm_create()

Signed-off-by: Yan, Zheng <zyan@redhat.com>
---
 src/mds/MDCache.cc | 92 ----------------------------------------------
 src/mds/MDCache.h  |  2 -
 2 files changed, 94 deletions(-)

diff --git a/src/mds/MDCache.cc b/src/mds/MDCache.cc
index 9caf909c00e..0222f41d4c3 100644
--- a/src/mds/MDCache.cc
+++ b/src/mds/MDCache.cc
@@ -9454,61 +9454,6 @@ void MDCache::create_global_snaprealm()
   global_snaprealm = in->snaprealm;
 }
 
-struct C_MDC_snaprealm_create_finish : public MDCacheLogContext {
-  MDRequestRef mdr;
-  MutationRef mut;
-  CInode *in;
-  C_MDC_snaprealm_create_finish(MDCache *c, MDRequestRef& m,
-                                MutationRef& mu, CInode *i) :
-    MDCacheLogContext(c), mdr(m), mut(mu), in(i) {}
-  void finish(int r) override {
-    mdcache->_snaprealm_create_finish(mdr, mut, in);
-  }
-};
-
-void MDCache::snaprealm_create(MDRequestRef& mdr, CInode *in)
-{
-  dout(10) << "snaprealm_create " << *in << dendl;
-  assert(!in->snaprealm);
-
-  // allocate an id..
-  if (!mdr->more()->stid) {
-    mds->snapclient->prepare_create_realm(in->ino(), &mdr->more()->stid, &mdr->more()->snapidbl,
-					  new C_MDS_RetryRequest(this, mdr));
-    return;
-  }
-
-  MutationRef mut(new MutationImpl());
-  mut->ls = mds->mdlog->get_current_segment();
-  EUpdate *le = new EUpdate(mds->mdlog, "snaprealm_create");
-  mds->mdlog->start_entry(le);
-
-  le->metablob.add_table_transaction(TABLE_SNAP, mdr->more()->stid);
-
-  auto &pi = in->project_inode(false, true);
-  pi.inode.version = in->pre_dirty();
-  pi.inode.rstat.rsnaprealms++;
-
-  bufferlist::iterator p = mdr->more()->snapidbl.begin();
-  snapid_t seq;
-  decode(seq, p);
-
-  auto &newsnap = *pi.snapnode;
-  newsnap.created = seq;
-  newsnap.seq = seq;
-  newsnap.last_created = seq;
-  
-  predirty_journal_parents(mut, &le->metablob, in, 0, PREDIRTY_PRIMARY);
-  journal_cow_inode(mut, &le->metablob, in);
-  le->metablob.add_primary_dentry(in->get_projected_parent_dn(), in, true);
-
-  mds->server->submit_mdlog_entry(le,
-                                  new C_MDC_snaprealm_create_finish(this, mdr,
-                                                                    mut, in),
-                                  mdr, __func__);
-  mds->mdlog->flush();
-}
-
 void MDCache::do_realm_invalidate_and_update_notify(CInode *in, int snapop, bool notify_clients)
 {
   dout(10) << "do_realm_invalidate_and_update_notify " << *in->snaprealm << " " << *in << dendl;
@@ -9614,43 +9559,6 @@ void MDCache::do_realm_invalidate_and_update_notify(CInode *in, int snapop, bool
   }
 }
 
-void MDCache::_snaprealm_create_finish(MDRequestRef& mdr, MutationRef& mut, CInode *in)
-{
-  dout(10) << "_snaprealm_create_finish " << *in << dendl;
-
-  // apply
-  in->pop_and_dirty_projected_inode(mut->ls);
-  mut->apply();
-  mds->locker->drop_locks(mut.get());
-  mut->cleanup();
-
-  // tell table we've committed
-  mds->snapclient->commit(mdr->more()->stid, mut->ls);
-
-  // create
-  bufferlist::iterator p = mdr->more()->snapidbl.begin();
-  snapid_t seq;
-  decode(seq, p);
-
-  in->open_snaprealm();
-  in->snaprealm->srnode.seq = seq;
-  in->snaprealm->srnode.created = seq;
-  bool ok = in->snaprealm->_open_parents(NULL);
-  assert(ok);
-
-  do_realm_invalidate_and_update_notify(in, CEPH_SNAP_OP_SPLIT);
-
-  /*
-  static int count = 5;
-  if (--count == 0)
-    ceph_abort();  // hack test test **********
-  */
-
-  // done.
-  mdr->more()->stid = 0;  // caller will likely need to reuse this
-  dispatch_request(mdr);
-}
-
 void MDCache::send_snap_update(CInode *in, version_t stid, int snap_op)
 {
   dout(10) << __func__ << " " << *in << " stid " << stid << dendl;
diff --git a/src/mds/MDCache.h b/src/mds/MDCache.h
index 119b38f5a51..41d8eda5f5d 100644
--- a/src/mds/MDCache.h
+++ b/src/mds/MDCache.h
@@ -1052,8 +1052,6 @@ private:
 public:
   SnapRealm *get_global_snaprealm() const { return global_snaprealm; }
   void create_global_snaprealm();
-  void snaprealm_create(MDRequestRef& mdr, CInode *in);
-  void _snaprealm_create_finish(MDRequestRef& mdr, MutationRef& mut, CInode *in);
   void do_realm_invalidate_and_update_notify(CInode *in, int snapop, bool notify_clients=true);
   void send_snap_update(CInode *in, version_t stid, int snap_op);
   void handle_snap_update(MMDSSnapUpdate *m);
-- 
2.39.5