From 781247651827fdd6dd6d4d5e9afa967f8adfa81b Mon Sep 17 00:00:00 2001
From: Leonid Yuriev <leo@yuriev.ru>
Date: Sun, 7 Jan 2018 17:06:11 +0300
Subject: [PATCH] mdbx: fix readonly mapping for Windows.

Change-Id: Ie301d7af74ff91e802aa78af8cfb329f587137ee
---
 src/osal.c | 2 +-
 1 file changed, 1 insertion(+), 1 deletion(-)

diff --git a/src/osal.c b/src/osal.c
index 07051232..d3397fd2 100644
--- a/src/osal.c
+++ b/src/osal.c
@@ -882,7 +882,7 @@ int mdbx_mmap(int flags, mdbx_mmap_t *map, size_t must, size_t limit) {
   if (!NT_SUCCESS(rc))
     return ntstatus2errcode(rc);
 
-  SIZE_T ViewSize = limit;
+  SIZE_T ViewSize = (flags & MDBX_RDONLY) ? 0 : limit;
   rc = NtMapViewOfSection(
       map->section, GetCurrentProcess(), &map->address,
       /* ZeroBits */ 0,