use the name sync truncate for the fast forward api

src/homelogstore/log_store.cpp

@@ -237,7 +237,7 @@ void HomeLogStore::truncate(const logstore_seq_num_t upto_seq_num, const bool in
     if (locked_now) { m_logdev.unlock_flush(); }
 }
 
-void HomeLogStore::fast_forward(const logstore_seq_num_t upto_seq_num, const bool in_memory_truncate_only) {
+void HomeLogStore::sync_truncate(const logstore_seq_num_t upto_seq_num, const bool in_memory_truncate_only) {
     // Check if we need to fill any gaps in the logstore
     auto const last_idx{get_contiguous_issued_seq_num(std::max(0l, truncated_upto()))};
     HS_REL_ASSERT_GE(last_idx, 0l, "Negative sequence number: {} [Logstore id ={}]", last_idx, m_store_id);
@@ -291,7 +291,7 @@ void HomeLogStore::do_truncate(const logstore_seq_num_t upto_seq_num, const bool
     m_records.truncate(upto_seq_num);
     m_safe_truncation_boundary.seq_num.store(upto_seq_num, std::memory_order_release);
 
-    // Need to update the superblock with meta, we don't persist yet, will be done as part of log dev truncation
+    // Need to update the superblock with meta, in case we don't persist yet, will be done as part of log dev truncation
     m_logdev.update_store_superblk(m_store_id, logstore_superblk{upto_seq_num + 1}, persist_now /* persist_now */);
 
     const int ind{search_max_le(upto_seq_num)};

src/homelogstore/log_store.hpp

@@ -402,7 +402,7 @@ class HomeLogStore : public std::enable_shared_from_this< HomeLogStore > {
      * This API makes sure the log idx is durable after the truncation.
      * See above truncate method for more details on parameters
      */
-    void fast_forward(const logstore_seq_num_t upto_seq_num, const bool in_memory_truncate_only = true);
+    void sync_truncate(const logstore_seq_num_t upto_seq_num, const bool in_memory_truncate_only = true);
 
     /**
      * @brief Fill the gap in the seq_num with a dummy value. This ensures that get_contiguous_issued and completed

src/homelogstore/tests/test_log_store.cpp

@@ -981,7 +981,7 @@ TEST_F(LogStoreTest, TruncateDurability) {
     // fast_forward should be resilient to crashe and should be able to recover
 
     uint64_t fast_forward_upto{350};
-    _hs_log_store->fast_forward(fast_forward_upto);
+    _hs_log_store->sync_truncate(fast_forward_upto);
 #ifdef _PRERELEASE
     flip::FlipFrequency freq1;
     freq1.set_count(1);