From 984f9874147e3da49705867ab83506ad80af86b8 Mon Sep 17 00:00:00 2001
From: Alex Rousskov <rousskov@measurement-factory.com>
Date: Mon, 7 Feb 2011 21:04:57 -0700
Subject: [PATCH] Destroy unused entries so that they do not keep Rock::SwapDir
 slots locked.

May need more work to identify all cases where [un]locked entries are [un]used.
---
 src/store.cc | 13 +++++++++++++
 1 file changed, 13 insertions(+)

diff --git a/src/store.cc b/src/store.cc
index 19f4c4322e..87a7e66ef4 100644
--- a/src/store.cc
+++ b/src/store.cc
@@ -526,7 +526,20 @@ StoreEntry::unlock()
     assert(storePendingNClients(this) == 0);
 
     if (EBIT_TEST(flags, RELEASE_REQUEST))
+    {
         this->release();
+        return 0;
+    }
+
+    // XXX: Rock store specific: since each SwapDir controls the index,
+    // unlocked entries should not stay in the global store_table
+    if (fileno >= 0) {
+        Store::Root().dereference(*this);
+        debugs(20, 5, HERE << "destroying unlocked entry: " << this << ' ' << *this);
+        setMemStatus(NOT_IN_MEMORY);
+        destroyStoreEntry(static_cast<hash_link *>(this));
+        return 0;
+    }
     else if (keepInMemory()) {
         Store::Root().dereference(*this);
         setMemStatus(IN_MEMORY);
-- 
2.47.2