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diff --git a/subversion/libsvn_fs_fs/pack.h b/subversion/libsvn_fs_fs/pack.h
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+++ b/subversion/libsvn_fs_fs/pack.h
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+/* pack.h : interface FSFS pack functionality
+ *
+ * ====================================================================
+ *    Licensed to the Apache Software Foundation (ASF) under one
+ *    or more contributor license agreements.  See the NOTICE file
+ *    distributed with this work for additional information
+ *    regarding copyright ownership.  The ASF licenses this file
+ *    to you under the Apache License, Version 2.0 (the
+ *    "License"); you may not use this file except in compliance
+ *    with the License.  You may obtain a copy of the License at
+ *
+ *      http://www.apache.org/licenses/LICENSE-2.0
+ *
+ *    Unless required by applicable law or agreed to in writing,
+ *    software distributed under the License is distributed on an
+ *    "AS IS" BASIS, WITHOUT WARRANTIES OR CONDITIONS OF ANY
+ *    KIND, either express or implied.  See the License for the
+ *    specific language governing permissions and limitations
+ *    under the License.
+ * ====================================================================
+ */
+
+#ifndef SVN_LIBSVN_FS__PACK_H
+#define SVN_LIBSVN_FS__PACK_H
+
+#include "fs.h"
+
+/* Possibly pack the repository at PATH.  This just take full shards, and
+   combines all the revision files into a single one, with a manifest header
+   when required by the repository format.
+
+   MAX_MEM limits the size of in-memory data structures needed for reordering
+   items in format 7 repositories.  0 means use the built-in default.
+
+   If given, NOTIFY_FUNC will be called with NOTIFY_BATON to report progress.
+   Use optional CANCEL_FUNC/CANCEL_BATON for cancellation support.
+
+   Existing filesystem references need not change.  */
+svn_error_t *
+svn_fs_fs__pack(svn_fs_t *fs,
+                apr_size_t max_mem,
+                svn_fs_pack_notify_t notify_func,
+                void *notify_baton,
+                svn_cancel_func_t cancel_func,
+                void *cancel_baton,
+                apr_pool_t *pool);
+
+/**
+ * For the packed revision @a rev in @a fs,  determine the offset within
+ * the revision pack file and return it in @a rev_offset.  Use @a pool for
+ * allocations.
+ */
+svn_error_t *
+svn_fs_fs__get_packed_offset(apr_off_t *rev_offset,
+                             svn_fs_t *fs,
+                             svn_revnum_t rev,
+                             apr_pool_t *pool);
+
+/* Return the svn_dir_entry_t* objects of DIRECTORY in an APR array
+ * allocated in RESULT_POOL with entries added in storage (on-disk) order.
+ * FS' format will be used to pick the optimal ordering strategy.  Use
+ * SCRATCH_POOL for temporary allocations.
+ */
+apr_array_header_t *
+svn_fs_fs__order_dir_entries(svn_fs_t *fs,
+                             apr_hash_t *directory,
+                             apr_pool_t *result_pool,
+                             apr_pool_t *scratch_pool);
+
+#endif