Re: [PATCH 13/30] mds: export CInode::STATE_NEEDSRECOVER

["Yan, Zheng" <zheng.z.yan@intel.com>]

updated version
---
From d11994e8487d9adbe0ea340b7e67c80a806bd615 Mon Sep 17 00:00:00 2001
From: "Yan, Zheng" <zheng.z.yan@intel.com>
Date: Mon, 6 May 2013 09:00:19 +0800
Subject: [PATCH 13/33] mds: export CInode::STATE_NEEDSRECOVER

Signed-off-by: Yan, Zheng <zheng.z.yan@intel.com>
---
 src/mds/CDir.cc     |  1 +
 src/mds/CInode.cc   | 18 +++++++++++-------
 src/mds/CInode.h    |  5 +++++
 src/mds/Migrator.cc | 11 ++++-------
 4 files changed, 21 insertions(+), 14 deletions(-)

diff --git a/src/mds/CDir.cc b/src/mds/CDir.cc
index 9b49c10..10b4bf4 100644
--- a/src/mds/CDir.cc
+++ b/src/mds/CDir.cc
@@ -2142,6 +2142,7 @@ void CDir::encode_export(bufferlist& bl)
 
 void CDir::finish_export(utime_t now)
 {
+  state &= MASK_STATE_EXPORT_KEPT;
   pop_auth_subtree_nested.sub(now, cache->decayrate, pop_auth_subtree);
   pop_me.zero(now);
   pop_auth_subtree.zero(now);
diff --git a/src/mds/CInode.cc b/src/mds/CInode.cc
index 781ed72..655088b 100644
--- a/src/mds/CInode.cc
+++ b/src/mds/CInode.cc
@@ -2989,11 +2989,10 @@ void CInode::_decode_locks_rejoin(bufferlist::iterator& p, list<Context*>& waite
 
 void CInode::encode_export(bufferlist& bl)
 {
-  ENCODE_START(3, 3, bl)
+  ENCODE_START(4, 4, bl)
   _encode_base(bl);
 
-  bool dirty = is_dirty();
-  ::encode(dirty, bl);
+  ::encode(state, bl);
 
   ::encode(pop, bl);
 
@@ -3024,6 +3023,8 @@ void CInode::encode_export(bufferlist& bl)
 
 void CInode::finish_export(utime_t now)
 {
+  state &= MASK_STATE_EXPORT_KEPT;
+
   pop.zero(now);
 
   // just in case!
@@ -3037,14 +3038,17 @@ void CInode::finish_export(utime_t now)
 void CInode::decode_import(bufferlist::iterator& p,
 			   LogSegment *ls)
 {
-  DECODE_START_LEGACY_COMPAT_LEN(3, 3, 3, p);
+  DECODE_START_LEGACY_COMPAT_LEN(4, 4, 4, p);
 
   _decode_base(p);
 
-  bool dirty;
-  ::decode(dirty, p);
-  if (dirty) 
+  unsigned s;
+  ::decode(s, p);
+  state |= (s & MASK_STATE_EXPORTED);
+  if (is_dirty()) {
+    get(PIN_DIRTY);
     _mark_dirty(ls);
+  }
 
   ::decode(pop, ceph_clock_now(g_ceph_context), p);
 
diff --git a/src/mds/CInode.h b/src/mds/CInode.h
index 7c63593..47973c2 100644
--- a/src/mds/CInode.h
+++ b/src/mds/CInode.h
@@ -155,6 +155,11 @@ public:
   static const int STATE_STRAYPINNED = (1<<16);
   static const int STATE_FROZENAUTHPIN = (1<<17);
 
+  static const int MASK_STATE_EXPORTED =
+    (STATE_DIRTY|STATE_NEEDSRECOVER);
+  static const int MASK_STATE_EXPORT_KEPT =
+    (STATE_FROZEN|STATE_AMBIGUOUSAUTH|STATE_EXPORTINGCAPS);
+
   // -- waiters --
   static const uint64_t WAIT_DIR         = (1<<0);
   static const uint64_t WAIT_ANCHORED    = (1<<1);
diff --git a/src/mds/Migrator.cc b/src/mds/Migrator.cc
index 59abb31..5cc26a3 100644
--- a/src/mds/Migrator.cc
+++ b/src/mds/Migrator.cc
@@ -1066,10 +1066,6 @@ void Migrator::finish_export_inode(CInode *in, utime_t now, list<Context*>& fini
 {
   dout(12) << "finish_export_inode " << *in << dendl;
 
-  in->finish_export(now);
-
-  finish_export_inode_caps(in);
-
   // clean
   if (in->is_dirty())
     in->mark_clean();
@@ -1103,7 +1099,11 @@ void Migrator::finish_export_inode(CInode *in, utime_t now, list<Context*>& fini
 
   // waiters
   in->take_waiting(CInode::WAIT_ANY_MASK, finished);
+
+  in->finish_export(now);
   
+  finish_export_inode_caps(in);
+
   // *** other state too?
 
   // move to end of LRU so we drop out of cache quickly!
@@ -1218,9 +1218,6 @@ void Migrator::finish_export_dir(CDir *dir, list<Context*>& finished, utime_t no
 
   if (dir->is_dirty())
     dir->mark_clean();
-  
-  // discard most dir state
-  dir->state &= CDir::MASK_STATE_EXPORT_KEPT;  // i only retain a few things.
 
   // suck up all waiters
   dir->take_waiting(CDir::WAIT_ANY_MASK, finished);    // all dir waiters
-- 
1.8.1.4