diff --git a/jps/jps-builders/src/org/jetbrains/jps/cmdline/ClasspathBootstrap.java b/jps/jps-builders/src/org/jetbrains/jps/cmdline/ClasspathBootstrap.java
index 9c387f11e865..bb4ce3509247 100644
--- a/jps/jps-builders/src/org/jetbrains/jps/cmdline/ClasspathBootstrap.java
+++ b/jps/jps-builders/src/org/jetbrains/jps/cmdline/ClasspathBootstrap.java
@@ -26,7 +26,6 @@ import com.intellij.util.SystemProperties;
 import com.intellij.util.containers.ContainerUtil;
 import com.jgoodies.forms.layout.CellConstraints;
 import io.netty.util.NetUtil;
-import jsr166e.extra.SequenceLock;
 import net.n3.nanoxml.IXMLBuilder;
 import org.jetbrains.annotations.Nullable;
 import org.jetbrains.jps.builders.impl.java.EclipseCompilerTool;
@@ -144,7 +143,6 @@ public class ClasspathBootstrap {
     cp.add(getResourcePath(CellConstraints.class));  // jGoodies-forms
     cp.add(getResourcePath(NotNullVerifyingInstrumenter.class));  // not-null
     cp.add(getResourcePath(IXMLBuilder.class));  // nano-xml
-    cp.add(getResourcePath(SequenceLock.class));  // jsr166
     cp.add(getJpsPluginSystemClassesPath().getAbsolutePath().replace('\\', '/'));
     
     //don't forget to update layoutCommunityJps() in layouts.gant accordingly
diff --git a/platform/lang-impl/src/com/intellij/util/indexing/FileBasedIndexImpl.java b/platform/lang-impl/src/com/intellij/util/indexing/FileBasedIndexImpl.java
index a21f28b14f8d..8e3ee5ee64a0 100644
--- a/platform/lang-impl/src/com/intellij/util/indexing/FileBasedIndexImpl.java
+++ b/platform/lang-impl/src/com/intellij/util/indexing/FileBasedIndexImpl.java
@@ -79,7 +79,6 @@ import com.intellij.util.io.storage.HeavyProcessLatch;
 import com.intellij.util.messages.MessageBus;
 import com.intellij.util.messages.MessageBusConnection;
 import gnu.trove.*;
-import jsr166e.extra.SequenceLock;
 import org.jetbrains.annotations.NotNull;
 import org.jetbrains.annotations.Nullable;
 import org.jetbrains.annotations.TestOnly;
@@ -92,6 +91,7 @@ import java.util.concurrent.ScheduledFuture;
 import java.util.concurrent.atomic.AtomicBoolean;
 import java.util.concurrent.atomic.AtomicInteger;
 import java.util.concurrent.locks.Lock;
+import java.util.concurrent.locks.ReentrantLock;
 
 /**
  * @author Eugene Zhuravlev
@@ -1163,7 +1163,7 @@ public class FileBasedIndexImpl extends FileBasedIndex {
     ++myFilesModCount;
   }
 
-  private final Lock myCalcIndexableFilesLock = new SequenceLock();
+  private final Lock myCalcIndexableFilesLock = new ReentrantLock();
 
   @Nullable
   public ProjectIndexableFilesFilter projectIndexableFiles(@Nullable Project project) {
diff --git a/platform/util/src/com/intellij/util/containers/RecentStringInterner.java b/platform/util/src/com/intellij/util/containers/RecentStringInterner.java
index e46e1b9cc563..2d71a21ded3c 100644
--- a/platform/util/src/com/intellij/util/containers/RecentStringInterner.java
+++ b/platform/util/src/com/intellij/util/containers/RecentStringInterner.java
@@ -16,10 +16,10 @@
 package com.intellij.util.containers;
 
 import com.intellij.openapi.util.LowMemoryWatcher;
-import jsr166e.extra.SequenceLock;
 import org.jetbrains.annotations.NotNull;
 
 import java.util.concurrent.locks.Lock;
+import java.util.concurrent.locks.ReentrantLock;
 
 /**
 * User: Maxim.Mossienko
@@ -56,7 +56,7 @@ public class RecentStringInterner {
           super.putToProtectedQueue(value, value);
         }
       };
-      myStripeLocks[i] = new SequenceLock();
+      myStripeLocks[i] = new ReentrantLock();
     }
 
     assert Integer.highestOneBit(stripes) == stripes;
diff --git a/platform/util/src/com/intellij/util/io/CachingEnumerator.java b/platform/util/src/com/intellij/util/io/CachingEnumerator.java
index 1ef73d05e040..74dfcb3d4e63 100644
--- a/platform/util/src/com/intellij/util/io/CachingEnumerator.java
+++ b/platform/util/src/com/intellij/util/io/CachingEnumerator.java
@@ -16,11 +16,11 @@
 package com.intellij.util.io;
 
 import com.intellij.util.containers.SLRUMap;
-import jsr166e.extra.SequenceLock;
 import org.jetbrains.annotations.Nullable;
 
 import java.io.IOException;
 import java.util.concurrent.locks.Lock;
+import java.util.concurrent.locks.ReentrantLock;
 
 /**
  * @author peter
@@ -44,7 +44,7 @@ public class CachingEnumerator<Data> implements DataEnumerator<Data> {
     for(int i = 0; i < STRIPE_COUNT; ++i) {
       myHashcodeToIdCache[i] = new SLRUMap<Integer, Integer>(protectedSize / STRIPE_COUNT, probationalSize / STRIPE_COUNT);
       myIdToStringCache[i] = new SLRUMap<Integer, Data>(protectedSize / STRIPE_COUNT, probationalSize / STRIPE_COUNT);
-      myStripeLocks[i] = new SequenceLock();
+      myStripeLocks[i] = new ReentrantLock();
     }
 
   }
diff --git a/platform/util/src/com/intellij/util/io/PagedFileStorage.java b/platform/util/src/com/intellij/util/io/PagedFileStorage.java
index 22b858974950..b9cd6f0d21e2 100644
--- a/platform/util/src/com/intellij/util/io/PagedFileStorage.java
+++ b/platform/util/src/com/intellij/util/io/PagedFileStorage.java
@@ -22,7 +22,6 @@ import com.intellij.util.SystemProperties;
 import com.intellij.util.containers.ConcurrentIntObjectMap;
 import com.intellij.util.containers.ContainerUtil;
 import com.intellij.util.containers.hash.LinkedHashMap;
-import jsr166e.extra.SequenceLock;
 import org.jetbrains.annotations.NotNull;
 import org.jetbrains.annotations.Nullable;
 
@@ -35,6 +34,7 @@ import java.nio.ByteBuffer;
 import java.nio.ByteOrder;
 import java.util.*;
 import java.util.concurrent.ConcurrentLinkedQueue;
+import java.util.concurrent.locks.ReentrantLock;
 
 /**
  * @author max
@@ -486,10 +486,10 @@ public class PagedFileStorage implements Forceable {
     private final ConcurrentIntObjectMap<PagedFileStorage> myIndex2Storage = ContainerUtil.createConcurrentIntObjectMap();
 
     private final LinkedHashMap<Integer, ByteBufferWrapper> mySegments;
-    private final SequenceLock mySegmentsAccessLock = new SequenceLock(); // protects map operations of mySegments, needed for LRU order, mySize and myMappingChangeCount
+    private final ReentrantLock mySegmentsAccessLock = new ReentrantLock(); // protects map operations of mySegments, needed for LRU order, mySize and myMappingChangeCount
     // todo avoid locking for access
 
-    private final SequenceLock mySegmentsAllocationLock = new SequenceLock();
+    private final ReentrantLock mySegmentsAllocationLock = new ReentrantLock();
     private final ConcurrentLinkedQueue<ByteBufferWrapper> mySegmentsToRemove = new ConcurrentLinkedQueue<ByteBufferWrapper>();
     private volatile long mySize;
     private volatile long mySizeLimit;
@@ -780,7 +780,7 @@ public class PagedFileStorage implements Forceable {
 
   public static class StorageLockContext {
     private final boolean myCheckThreadAccess;
-    private final SequenceLock myLock;
+    private final ReentrantLock myLock;
     private final StorageLock myStorageLock;
 
     @Deprecated
@@ -789,7 +789,7 @@ public class PagedFileStorage implements Forceable {
     }
 
     private StorageLockContext(StorageLock lock, boolean checkAccess) {
-      myLock = new SequenceLock();
+      myLock = new ReentrantLock();
       myStorageLock = lock;
       myCheckThreadAccess = checkAccess;
     }