diff --git a/programs/local/LocalServer.cpp b/programs/local/LocalServer.cpp
index 5768e744f94..bbfd73af476 100644
--- a/programs/local/LocalServer.cpp
+++ b/programs/local/LocalServer.cpp
@@ -26,6 +26,7 @@
 #include <Common/TLDListsHolder.h>
 #include <Common/quoteString.h>
 #include <Common/randomSeed.h>
+#include <Common/ThreadPool.h>
 #include <Loggers/Loggers.h>
 #include <IO/ReadBufferFromFile.h>
 #include <IO/ReadBufferFromString.h>
diff --git a/src/Disks/ObjectStorages/DiskObjectStorage.cpp b/src/Disks/ObjectStorages/DiskObjectStorage.cpp
index 6143f0620b8..0dc070ee917 100644
--- a/src/Disks/ObjectStorages/DiskObjectStorage.cpp
+++ b/src/Disks/ObjectStorages/DiskObjectStorage.cpp
@@ -15,6 +15,7 @@
 #include <Disks/ObjectStorages/DiskObjectStorageRemoteMetadataRestoreHelper.h>
 #include <Disks/ObjectStorages/DiskObjectStorageTransaction.h>
 #include <Disks/FakeDiskTransaction.h>
+#include <Common/ThreadPool.h>
 #include <Poco/Util/AbstractConfiguration.h>
 #include <Interpreters/Context.h>
 
diff --git a/src/Interpreters/Cache/FileCache.cpp b/src/Interpreters/Cache/FileCache.cpp
index 7bdb97e527d..d7497f068b6 100644
--- a/src/Interpreters/Cache/FileCache.cpp
+++ b/src/Interpreters/Cache/FileCache.cpp
@@ -664,6 +664,7 @@ bool FileCache::tryReserve(FileSegment & file_segment, size_t size)
         throw Exception(ErrorCodes::LOGICAL_ERROR, "Cache became inconsistent. There must be a bug");
 
     file_segment.getKeyMetadata()->createBaseDirectory();
+    file_segment.reserved_size += size;
     return true;
 }
 
diff --git a/src/Interpreters/Cache/FileSegment.cpp b/src/Interpreters/Cache/FileSegment.cpp
index 63c666d04c5..35d9c0e16cd 100644
--- a/src/Interpreters/Cache/FileSegment.cpp
+++ b/src/Interpreters/Cache/FileSegment.cpp
@@ -380,7 +380,7 @@ FileSegment::State FileSegment::wait(size_t offset)
         chassert(!getDownloaderUnlocked(lock).empty());
         chassert(!isDownloaderUnlocked(lock));
 
-        [[maybe_unused]] auto ok = cv.wait_for(lock, std::chrono::seconds(60), [&, this]()
+        [[maybe_unused]] const auto ok = cv.wait_for(lock, std::chrono::seconds(60), [&, this]()
         {
             return download_state != State::DOWNLOADING || offset < getCurrentWriteOffset(true);
         });
@@ -467,14 +467,6 @@ bool FileSegment::reserve(size_t size_to_reserve)
             segment_range.right = range().left + expected_downloaded_size + size_to_reserve;
 
         reserved = cache->tryReserve(*this, size_to_reserve);
-        if (reserved)
-        {
-            /// No lock is required because reserved size is always
-            /// mananaged (read/modified) by the downloader only
-            /// or in isLastOwnerOfFileSegment() case.
-            /// It is made atomic because of getInfoForLog.
-            reserved_size += size_to_reserve;
-        }
         chassert(assertCorrectness());
     }
 
diff --git a/src/Interpreters/Cache/FileSegment.h b/src/Interpreters/Cache/FileSegment.h
index 6defe969ba4..6a40be3280c 100644
--- a/src/Interpreters/Cache/FileSegment.h
+++ b/src/Interpreters/Cache/FileSegment.h
@@ -64,6 +64,7 @@ struct CreateFileSegmentSettings
 class FileSegment : private boost::noncopyable, public std::enable_shared_from_this<FileSegment>
 {
 friend struct LockedKey;
+friend class FileCache; /// Because of reserved_size in tryReserve().
 
 public:
     using Key = FileCacheKey;
diff --git a/src/Interpreters/Cache/LRUFileCachePriority.cpp b/src/Interpreters/Cache/LRUFileCachePriority.cpp
index 9a0e2d8fb05..9853a09a3d3 100644
--- a/src/Interpreters/Cache/LRUFileCachePriority.cpp
+++ b/src/Interpreters/Cache/LRUFileCachePriority.cpp
@@ -113,8 +113,8 @@ void LRUFileCachePriority::iterate(IterateFunc && func, const CacheGuard::Lock &
         {
             throw Exception(
                 ErrorCodes::LOGICAL_ERROR,
-                "Mismatch of file segment size in file segment metadata and priority queue: {} != {}",
-                it->size, metadata->size());
+                "Mismatch of file segment size in file segment metadata and priority queue: {} != {} ({})",
+                it->size, metadata->size(), metadata->file_segment->getInfoForLog());
         }
 
         auto result = func(*locked_key, metadata);