From c77494e2aa9ae7b25f525eaf4d6e2f2fdd2554a3 Mon Sep 17 00:00:00 2001
From: Leonid Yuriev <leo@yuriev.ru>
Date: Wed, 24 Mar 2021 19:16:52 +0300
Subject: [PATCH] mdbx: fix `mdbx_env_set_option()` for dp_initial & dp_limit.

Fixes https://github.com/erthink/libmdbx/issues/179

Change-Id: I925104a45148112e0ce94a069a7468e2b4fc8209
---
 src/core.c | 20 +++++---------------
 1 file changed, 5 insertions(+), 15 deletions(-)

diff --git a/src/core.c b/src/core.c
index 980b4a5d..fa8b903f 100644
--- a/src/core.c
+++ b/src/core.c
@@ -21032,28 +21032,18 @@ __cold int mdbx_env_set_option(MDBX_env *env, const MDBX_option_t option,
     if (env->me_txn)
       err = MDBX_EPERM /* unable change during transaction */;
     else {
-      mdbx_dpl_clear(env->me_txn0->tw.dirtylist);
-      const unsigned value32 = (unsigned)value;
+      const pgno_t value32 = (pgno_t)value;
       if (option == MDBX_opt_txn_dp_initial &&
           env->me_options.dp_initial != value32) {
+        env->me_options.dp_initial = value32;
         if (env->me_options.dp_limit < value32)
           env->me_options.dp_limit = value32;
-        if (env->me_txn0->tw.dirtylist->detent < value32 &&
-            !mdbx_dpl_reserve(env->me_txn0, value32))
-          err = MDBX_ENOMEM;
-        else
-          env->me_options.dp_initial = value32;
       }
       if (option == MDBX_opt_txn_dp_limit &&
           env->me_options.dp_limit != value32) {
-        if (env->me_txn0->tw.dirtylist->detent > value32 &&
-            !mdbx_dpl_reserve(env->me_txn0, value32))
-          err = MDBX_ENOMEM;
-        else {
-          if (env->me_options.dp_initial > value32)
-            env->me_options.dp_initial = value32;
-          env->me_options.dp_limit = value32;
-        }
+        env->me_options.dp_limit = value32;
+        if (env->me_options.dp_initial > value32)
+          env->me_options.dp_initial = value32;
       }
     }
     break;