From 74c741aea690d43046d68dc704530675b4905e93 Mon Sep 17 00:00:00 2001
From: "copilot-swe-agent[bot]" <198982749+Copilot@users.noreply.github.com>
Date: Sun, 22 Feb 2026 04:18:26 +0000
Subject: [PATCH 1/2] Initial plan


From dd2947771f5564b094860291b6a4aa35734748cf Mon Sep 17 00:00:00 2001
From: "copilot-swe-agent[bot]" <198982749+Copilot@users.noreply.github.com>
Date: Sun, 22 Feb 2026 04:25:51 +0000
Subject: [PATCH 2/2] UDFS: Fix paging IO wait handling without boolean
 literals in read.cpp and write.cpp

Co-authored-by: Zero3K20 <258969903+Zero3K20@users.noreply.github.com>
---
 drivers/filesystems/udfs/read.cpp  | 9 +++++++++
 drivers/filesystems/udfs/write.cpp | 2 +-
 2 files changed, 10 insertions(+), 1 deletion(-)

diff --git a/drivers/filesystems/udfs/read.cpp b/drivers/filesystems/udfs/read.cpp
index ca1795add66de..764e8a071158b 100644
--- a/drivers/filesystems/udfs/read.cpp
+++ b/drivers/filesystems/udfs/read.cpp
@@ -149,6 +149,15 @@ UDFCommonRead(
         NonCachedIo = TRUE;
     }
 
+    // If this is async paging io then check if we are being called by the mapped page writer.
+    // Convert it back to synchronous if not.
+
+    if (!Wait && PagingIo) {
+
+        SetFlag(IrpContext->Flags, IRP_CONTEXT_FLAG_WAIT);
+        Wait = BooleanFlagOn(IrpContext->Flags, IRP_CONTEXT_FLAG_WAIT);
+    }
+
     _SEH2_TRY {
 
         // Acquire the appropriate FCB resource shared
diff --git a/drivers/filesystems/udfs/write.cpp b/drivers/filesystems/udfs/write.cpp
index 75feee29a023a..e5641e881cff3 100644
--- a/drivers/filesystems/udfs/write.cpp
+++ b/drivers/filesystems/udfs/write.cpp
@@ -132,8 +132,8 @@ UDFCommonWrite(
 
     if (!Wait && PagingIo) {
 
-        Wait = TRUE;
         SetFlag(IrpContext->Flags, IRP_CONTEXT_FLAG_WAIT);
+        Wait = BooleanFlagOn(IrpContext->Flags, IRP_CONTEXT_FLAG_WAIT);
     }
 
     StartingOffset = IrpSp->Parameters.Write.ByteOffset.QuadPart;