From d29dc7c80e58f7e6953e8b7b25fae68c4178dabc Mon Sep 17 00:00:00 2001
From: Tomasz Pytel <tompytel@gmail.com>
Date: Mon, 14 Apr 2025 11:19:57 -0400
Subject: [PATCH 1/2] gh-132519: fix excessive mem usage in QSBR with large
 blocks

---
 Python/ceval_gil.c | 3 +++
 1 file changed, 3 insertions(+)

diff --git a/Python/ceval_gil.c b/Python/ceval_gil.c
index a455779a6598e9..8ec0f0f677a517 100644
--- a/Python/ceval_gil.c
+++ b/Python/ceval_gil.c
@@ -1350,6 +1350,9 @@ _Py_HandlePending(PyThreadState *tstate)
         _Py_unset_eval_breaker_bit(tstate, _PY_EVAL_EXPLICIT_MERGE_BIT);
         _Py_brc_merge_refcounts(tstate);
     }
+
+    /* Keep memory usage down if QSBR freeing large blocks. */
+    _PyMem_ProcessDelayed(tstate);
 #endif
 
     /* GC scheduled to run */

From 4037c101e67474ede07f43d95718d8d522ce55fb Mon Sep 17 00:00:00 2001
From: "blurb-it[bot]" <43283697+blurb-it[bot]@users.noreply.github.com>
Date: Mon, 14 Apr 2025 15:22:31 +0000
Subject: [PATCH 2/2] =?UTF-8?q?=F0=9F=93=9C=F0=9F=A4=96=20Added=20by=20blu?=
 =?UTF-8?q?rb=5Fit.?=
MIME-Version: 1.0
Content-Type: text/plain; charset=UTF-8
Content-Transfer-Encoding: 8bit

---
 .../2025-04-14-15-22-30.gh-issue-132519.Ngn0__.rst               | 1 +
 1 file changed, 1 insertion(+)
 create mode 100644 Misc/NEWS.d/next/Core_and_Builtins/2025-04-14-15-22-30.gh-issue-132519.Ngn0__.rst

diff --git a/Misc/NEWS.d/next/Core_and_Builtins/2025-04-14-15-22-30.gh-issue-132519.Ngn0__.rst b/Misc/NEWS.d/next/Core_and_Builtins/2025-04-14-15-22-30.gh-issue-132519.Ngn0__.rst
new file mode 100644
index 00000000000000..f8c1bb77770225
--- /dev/null
+++ b/Misc/NEWS.d/next/Core_and_Builtins/2025-04-14-15-22-30.gh-issue-132519.Ngn0__.rst
@@ -0,0 +1 @@
+Fix excessive memory usage when freeing large blocks via QSBR in :term:`free-threaded <free threading>` build.