diff --git a/platform/core-impl/src/com/intellij/psi/impl/PsiDocumentManagerBase.java b/platform/core-impl/src/com/intellij/psi/impl/PsiDocumentManagerBase.java
index e5ec17819792..3e1b9486e717 100644
--- a/platform/core-impl/src/com/intellij/psi/impl/PsiDocumentManagerBase.java
+++ b/platform/core-impl/src/com/intellij/psi/impl/PsiDocumentManagerBase.java
@@ -214,6 +214,11 @@ public abstract class PsiDocumentManagerBase extends PsiDocumentManager implemen
   @Override
   public void commitAllDocuments() {
     ApplicationManager.getApplication().assertIsDispatchThread();
+    if (!((TransactionGuardImpl)TransactionGuard.getInstance()).isWriteActionAllowed()) {
+      // please assign exceptions here to Peter
+      LOG.error("Write access is not allowed in this context, see TransactionGuard documentation for details");
+    }
+
     if (myUncommittedDocuments.isEmpty()) return;
 
     final Document[] documents = getUncommittedDocuments();
@@ -286,6 +291,11 @@ public abstract class PsiDocumentManagerBase extends PsiDocumentManager implemen
 
   @Override
   public void commitDocument(@NotNull final Document doc) {
+    if (!((TransactionGuardImpl)TransactionGuard.getInstance()).isWriteActionAllowed()) {
+      // please assign exceptions here to Peter
+      LOG.error("Write access is not allowed in this context, see TransactionGuard documentation for details");
+    }
+
     final Document document = doc instanceof DocumentWindow ? ((DocumentWindow)doc).getDelegate() : doc;
     if (!isCommitted(document)) {
       doCommit(document);
diff --git a/platform/platform-impl/src/com/intellij/openapi/fileEditor/impl/FileDocumentManagerImpl.java b/platform/platform-impl/src/com/intellij/openapi/fileEditor/impl/FileDocumentManagerImpl.java
index 7de2dbf34d60..ec7ee0e5cbbb 100644
--- a/platform/platform-impl/src/com/intellij/openapi/fileEditor/impl/FileDocumentManagerImpl.java
+++ b/platform/platform-impl/src/com/intellij/openapi/fileEditor/impl/FileDocumentManagerImpl.java
@@ -28,6 +28,8 @@ import com.intellij.diff.util.DiffUserDataKeys;
 import com.intellij.openapi.Disposable;
 import com.intellij.openapi.application.AccessToken;
 import com.intellij.openapi.application.ApplicationManager;
+import com.intellij.openapi.application.TransactionGuard;
+import com.intellij.openapi.application.TransactionGuardImpl;
 import com.intellij.openapi.command.CommandProcessor;
 import com.intellij.openapi.command.UndoConfirmationPolicy;
 import com.intellij.openapi.diagnostic.Logger;
@@ -298,6 +300,10 @@ public class FileDocumentManagerImpl extends FileDocumentManager implements Virt
    */
   public void saveAllDocuments(boolean isExplicit) {
     ApplicationManager.getApplication().assertIsDispatchThread();
+    if (!((TransactionGuardImpl)TransactionGuard.getInstance()).isWriteActionAllowed()) {
+      // please assign exceptions here to Peter
+      LOG.error("Write access is not allowed in this context, see TransactionGuard documentation for details");
+    }
 
     myMultiCaster.beforeAllDocumentsSaving();
     if (myUnsavedDocuments.isEmpty()) return;
@@ -338,6 +344,11 @@ public class FileDocumentManagerImpl extends FileDocumentManager implements Virt
 
   public void saveDocument(@NotNull final Document document, final boolean explicit) {
     ApplicationManager.getApplication().assertIsDispatchThread();
+    if (!((TransactionGuardImpl)TransactionGuard.getInstance()).isWriteActionAllowed()) {
+      // please assign exceptions here to Peter
+      LOG.error("Write access is not allowed in this context, see TransactionGuard documentation for details");
+    }
+
     if (!myUnsavedDocuments.contains(document)) return;
 
     try {