[PATCH 11/22] ntdll: Downgrade loader lock to shared when calling module enum callbacks.

[Paul Gofman]

Signed-off-by: Paul Gofman 
---
 dlls/ntdll/loader.c | 2 ++
 1 file changed, 2 insertions(+)

diff --git a/dlls/ntdll/loader.c b/dlls/ntdll/loader.c
index dae4ce13b44..9397c927c3e 100644
--- a/dlls/ntdll/loader.c
+++ b/dlls/ntdll/loader.c
@@ -1907,6 +1907,7 @@ NTSTATUS WINAPI LdrEnumerateLoadedModules( void *unknown, LDRENUMPROC callback,
         return STATUS_INVALID_PARAMETER;

lock_loader_exclusive();
+    lock_loader_downgrade_exclusive();
     RtlEnterCriticalSection( &loader_section );
     mark = &NtCurrentTeb()->Peb->LdrData->InMemoryOrderModuleList;
     for (entry = mark->Flink; entry != mark; entry = entry->Flink)
@@ -1916,6 +1917,7 @@ NTSTATUS WINAPI LdrEnumerateLoadedModules( void *unknown, LDRENUMPROC callback,
         if (stop) break;
     }
     RtlLeaveCriticalSection( &loader_section );
+    lock_loader_restore_exclusive();
     unlock_loader();
     return STATUS_SUCCESS;
 }