From 32142b3c62277ac7cb941f2036270decb6b514f4 Mon Sep 17 00:00:00 2001
From: Simon Mo <simon.mo@hey.com>
Date: Tue, 22 Jul 2025 01:18:40 -0700
Subject: [PATCH] [Bugfix] Fix eviction cached blocked logic (#21357)

Signed-off-by: simon-mo <simon.mo@hey.com>
---
 vllm/v1/core/block_pool.py | 2 +-
 1 file changed, 1 insertion(+), 1 deletion(-)

diff --git a/vllm/v1/core/block_pool.py b/vllm/v1/core/block_pool.py
index 0fd6947ae0bda..cbb6bb26822c7 100644
--- a/vllm/v1/core/block_pool.py
+++ b/vllm/v1/core/block_pool.py
@@ -253,7 +253,7 @@ class BlockPool:
             return False
         block.reset_hash()
         blocks_by_id.pop(block.block_id, None)
-        if blocks_by_id:
+        if len(blocks_by_id) == 0:
             del self.cached_block_hash_to_block[block_hash]
 
         if self.enable_kv_cache_events: