From c6553d82b84ec7cd29a31329923a64a83e10f204 Mon Sep 17 00:00:00 2001
From: Jussi Saurio <jussi.saurio@gmail.com>
Date: Mon, 25 Aug 2025 15:05:04 +0300
Subject: [PATCH] Clarify expected behavior with assertion

---
 core/storage/btree.rs | 7 +++----
 1 file changed, 3 insertions(+), 4 deletions(-)

diff --git a/core/storage/btree.rs b/core/storage/btree.rs
index b919e7c0e..30530d691 100644
--- a/core/storage/btree.rs
+++ b/core/storage/btree.rs
@@ -7099,10 +7099,9 @@ fn fill_cell_payload(
                         }
 
                         if record_offset_slice.len() - amount_to_copy == 0 {
-                            if let Some(cur_page) = current_overflow_page {
-                                cur_page.unpin(); // We can safely unpin the current overflow page now.
-                            }
-                            // Everything copied.
+                            let cur_page = current_overflow_page.as_ref().expect("we must have overflowed if the remaining payload fits on the current page");
+                            cur_page.unpin(); // We can safely unpin the current overflow page now.
+                                              // Everything copied.
                             break;
                         }
                         *state = CopyDataState::AllocateOverflowPage;