From 416a80278957ccf90918ef16d906fff6f45cb4d7 Mon Sep 17 00:00:00 2001
From: Leonid Yuriev <leo@yuriev.ru>
Date: Wed, 21 Apr 2021 12:20:32 +0300
Subject: [PATCH] mdbx: add missing err-log for `MDBX_TXN_FULL` during page
 allocation.

Minor for https://github.com/erthink/libmdbx/issues/186

Change-Id: Iadb868c64fba4e9d5a4ee7df093f0cfb9288bf93
---
 src/core.c | 5 ++++-
 1 file changed, 4 insertions(+), 1 deletion(-)

diff --git a/src/core.c b/src/core.c
index 7978fa14..4102f045 100644
--- a/src/core.c
+++ b/src/core.c
@@ -6061,8 +6061,11 @@ no_loose:
 done:
   if (unlikely(mp == nullptr))
     return MDBX_SUCCESS;
-  if (unlikely(txn->tw.dirtyroom < 1))
+  if (unlikely(txn->tw.dirtyroom < 1)) {
+    mdbx_error("Dirtyroom is depleted, DPL length %u",
+               txn->tw.dirtylist->length);
     return MDBX_TXN_FULL;
+  }
   mdbx_ensure(env, pgno >= NUM_METAS);
   if (env->me_flags & MDBX_WRITEMAP) {
     np = pgno2page(env, pgno);