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-rw-r--r--compat/win32/flush.c2
1 files changed, 2 insertions, 0 deletions
diff --git a/compat/win32/flush.c b/compat/win32/flush.c
index 291f90ea94..7244ff69ac 100644
--- a/compat/win32/flush.c
+++ b/compat/win32/flush.c
@@ -6,7 +6,9 @@ int win32_fsync_no_flush(int fd)
{
IO_STATUS_BLOCK io_status;
+#ifndef FLUSH_FLAGS_FILE_DATA_ONLY
#define FLUSH_FLAGS_FILE_DATA_ONLY 1
+#endif
DECLARE_PROC_ADDR(ntdll.dll, NTSTATUS, NTAPI, NtFlushBuffersFileEx,
HANDLE FileHandle, ULONG Flags, PVOID Parameters, ULONG ParameterSize,