From b9fd20501e2cff8831832f00d7ca9fcfc0d9e801 Mon Sep 17 00:00:00 2001
From: Andrey Kleshchev <117672381+akleshchev@users.noreply.github.com>
Date: Thu, 12 Feb 2026 00:37:46 +0200
Subject: #5356 Fix fast texture cache's mutex stall #2

---
 indra/newview/lltexturecache.h | 4 ++--
 1 file changed, 2 insertions(+), 2 deletions(-)

(limited to 'indra/newview/lltexturecache.h')

diff --git a/indra/newview/lltexturecache.h b/indra/newview/lltexturecache.h
index 42894383fd..a09bcc1572 100644
--- a/indra/newview/lltexturecache.h
+++ b/indra/newview/lltexturecache.h
@@ -148,7 +148,7 @@ public:
     U32 getMaxEntries() { return sCacheMaxEntries; };
     bool isInCache(const LLUUID& id) ;
     bool isInLocal(const LLUUID& id) ; //not thread safe at the moment
-
+    LLMutex* getFastCacheMutex() { return &mFastCacheMutex; }
 protected:
     // Accessed by LLTextureCacheWorker
     std::string getLocalFileName(const LLUUID& id);
@@ -194,7 +194,7 @@ private:
     // Internal
     LLMutex mWorkersMutex;
     LLMutex mHeaderMutex;
-    LLMutex mHeaderIDMapMutex;
+    LLMutex mHeaderIDMapMutex; // To avoid deadlocks, never lock mFastCacheMutex after mHeaderIDMapMutex.
     LLMutex mListMutex;
     LLMutex mFastCacheMutex;
     LLAPRFile* mHeaderAPRFile;
-- 
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