linux-kernel - [PATCH next 0/2] THP COW support for private executable file mmap

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Message-ID: <20251215123407.380813-1-zhangqilong3@huawei.com>
Date: Mon, 15 Dec 2025 20:34:05 +0800
From: Zhang Qilong <zhangqilong3@...wei.com>
To: <akpm@...ux-foundation.org>, <david@...nel.org>,
	<lorenzo.stoakes@...cle.com>, <corbet@....net>
CC: <ziy@...dia.com>, <baolin.wang@...ux.alibaba.com>,
	<Liam.Howlett@...cle.com>, <npache@...hat.com>, <ryan.roberts@....com>,
	<dev.jain@....com>, <baohua@...nel.org>, <lance.yang@...ux.dev>,
	<vbabka@...e.cz>, <rppt@...nel.org>, <surenb@...gle.com>, <mhocko@...e.com>,
	<wangkefeng.wang@...wei.com>, <sunnanyong@...wei.com>, <linux-mm@...ck.org>,
	<linux-doc@...r.kernel.org>, <linux-kernel@...r.kernel.org>, Zhang Qilong
	<zhangqilong3@...wei.com>
Subject: [PATCH next 0/2] THP COW support for private executable file mmap

This patch series implementate THP COW for private executable file
mmap. It's major designed to increase the iTLB cache hit rate for
hot patching application, and we add a new sysfs knob to disable or
enable it.

Zhang Qilong (2):
  mm/huge_memory: Implementation of THP COW for executable file mmap
  mm/huge_memory: Add sysfs knob for executable THP COW

 Documentation/admin-guide/mm/transhuge.rst |   8 ++
 include/linux/huge_mm.h                    |   5 +
 mm/huge_memory.c                           | 105 ++++++++++++++++++++-
 mm/memory.c                                |  13 +++
 4 files changed, 130 insertions(+), 1 deletion(-)

-- 
2.43.0