From: Yan, Zheng <zyan@redhat.com>
Date: Thu, 9 Jul 2020 02:43:12 +0000 (+0800)
Subject: mds: only add inodes that clients want Frw or excl caps to open file table
X-Git-Tag: v15.2.9~122^2~32^2~6
X-Git-Url: http://git-server-git.apps.pok.os.sepia.ceph.com/?a=commitdiff_plain;h=62cca9464e5ee7eb6cf781cb0b4c29511dc2ea5e;p=ceph.git

mds: only add inodes that clients want Frw or excl caps to open file table

Signed-off-by: "Yan, Zheng" <zyan@redhat.com>
(cherry picked from commit e6de138f3334adc26cac4c01dfbbdf8a2472679a)
---

diff --git a/src/mds/CInode.cc b/src/mds/CInode.cc
index 551d2bf0b4538..7055e0e49d21b 100644
--- a/src/mds/CInode.cc
+++ b/src/mds/CInode.cc
@@ -3261,9 +3261,9 @@ void CInode::set_mds_caps_wanted(mempool::mds_co::compact_map<int32_t,int32_t>&
   mds_caps_wanted.swap(m);
   if (old_empty != (bool)mds_caps_wanted.empty()) {
     if (old_empty)
-      adjust_num_caps_wanted(1);
+      adjust_num_caps_notable(1);
     else
-      adjust_num_caps_wanted(-1);
+      adjust_num_caps_notable(-1);
   }
 }
 
@@ -3273,23 +3273,23 @@ void CInode::set_mds_caps_wanted(mds_rank_t mds, int32_t wanted)
   if (wanted) {
     mds_caps_wanted[mds] = wanted;
     if (old_empty)
-      adjust_num_caps_wanted(1);
+      adjust_num_caps_notable(1);
   } else if (!old_empty) {
     mds_caps_wanted.erase(mds);
     if (mds_caps_wanted.empty())
-      adjust_num_caps_wanted(-1);
+      adjust_num_caps_notable(-1);
   }
 }
 
-void CInode::adjust_num_caps_wanted(int d)
+void CInode::adjust_num_caps_notable(int d)
 {
-  if (!num_caps_wanted && d > 0)
+  if (!num_caps_notable && d > 0)
     mdcache->open_file_table.add_inode(this);
-  else if (num_caps_wanted > 0 && num_caps_wanted == -d)
+  else if (num_caps_notable > 0 && num_caps_notable == -d)
     mdcache->open_file_table.remove_inode(this);
 
-  num_caps_wanted +=d;
-  ceph_assert(num_caps_wanted >= 0);
+  num_caps_notable +=d;
+  ceph_assert(num_caps_notable >= 0);
 }
 
 Capability *CInode::add_client_cap(client_t client, Session *session,
@@ -3336,8 +3336,8 @@ void CInode::remove_client_cap(client_t client)
   if (client == loner_cap)
     loner_cap = -1;
 
-  if (cap->wanted())
-    adjust_num_caps_wanted(-1);
+  if (cap->is_wanted_notable())
+    adjust_num_caps_notable(-1);
 
   client_caps.erase(it);
   if (client_caps.empty()) {
diff --git a/src/mds/CInode.h b/src/mds/CInode.h
index 22cdc6e7bef32..a416a9060a382 100644
--- a/src/mds/CInode.h
+++ b/src/mds/CInode.h
@@ -366,7 +366,7 @@ class CInode : public MDSCacheObject, public InodeStoreBase, public Counter<CIno
     clear_file_locks();
     ceph_assert(num_projected_xattrs == 0);
     ceph_assert(num_projected_srnodes == 0);
-    ceph_assert(num_caps_wanted == 0);
+    ceph_assert(num_caps_notable == 0);
     ceph_assert(num_subtree_roots == 0);
     ceph_assert(num_exporting_dirs == 0);
     ceph_assert(batch_ops.empty());
@@ -815,8 +815,8 @@ class CInode : public MDSCacheObject, public InodeStoreBase, public Counter<CIno
     }
   }
 
-  int get_num_caps_wanted() const { return num_caps_wanted; }
-  void adjust_num_caps_wanted(int d);
+  int get_num_caps_notable() const { return num_caps_notable; }
+  void adjust_num_caps_notable(int d);
 
   Capability *add_client_cap(client_t client, Session *session,
 			     SnapRealm *conrealm=nullptr, bool new_inode=false);
@@ -1117,7 +1117,7 @@ protected:
   mempool_cap_map client_caps; // client -> caps
   mempool::mds_co::compact_map<int32_t, int32_t> mds_caps_wanted;     // [auth] mds -> caps wanted
   int replica_caps_wanted = 0; // [replica] what i've requested from auth
-  int num_caps_wanted = 0;
+  int num_caps_notable = 0;
 
   ceph_lock_state_t *fcntl_locks = nullptr;
   ceph_lock_state_t *flock_locks = nullptr;
diff --git a/src/mds/Capability.cc b/src/mds/Capability.cc
index 32f780ee20267..4c2ccc75d1268 100644
--- a/src/mds/Capability.cc
+++ b/src/mds/Capability.cc
@@ -212,15 +212,12 @@ void Capability::maybe_clear_notable()
 void Capability::set_wanted(int w) {
   CInode *in = get_inode();
   if (in) {
-    if (!_wanted && w) {
-      in->adjust_num_caps_wanted(1);
-    } else if (_wanted && !w) {
-      in->adjust_num_caps_wanted(-1);
-    }
     if (!is_wanted_notable(_wanted) && is_wanted_notable(w)) {
+      in->adjust_num_caps_notable(1);
       if (!is_notable())
 	mark_notable();
     } else if (is_wanted_notable(_wanted) && !is_wanted_notable(w)) {
+      in->adjust_num_caps_notable(-1);
       maybe_clear_notable();
     }
   }
diff --git a/src/mds/Capability.h b/src/mds/Capability.h
index 218eeb40fce0d..b136b08c1f359 100644
--- a/src/mds/Capability.h
+++ b/src/mds/Capability.h
@@ -253,6 +253,9 @@ public:
   static bool is_wanted_notable(int wanted) {
     return wanted & (CEPH_CAP_ANY_WR|CEPH_CAP_FILE_WR|CEPH_CAP_FILE_RD);
   }
+  bool is_wanted_notable() const {
+    return is_wanted_notable(wanted());
+  }
   bool is_notable() const { return state & STATE_NOTABLE; }
 
   bool is_stale() const;