linux-kernel - [PATCH v2 0/3] add hugetlb_free

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Message-Id: <20220302083758.32528-1-songmuchun@bytedance.com>
Date:   Wed,  2 Mar 2022 16:37:55 +0800
From:   Muchun Song <songmuchun@...edance.com>
To:     corbet@....net, mike.kravetz@...cle.com, akpm@...ux-foundation.org,
        mcgrof@...nel.org, keescook@...omium.org, yzaikin@...gle.com
Cc:     linux-doc@...r.kernel.org, linux-kernel@...r.kernel.org,
        linux-mm@...ck.org, duanxiongchun@...edance.com, smuchun@...il.com,
        Muchun Song <songmuchun@...edance.com>
Subject: [PATCH v2 0/3] add hugetlb_free_vmemmap sysctl

This series amis to add hugetlb_free_vmemmap sysctl to enable the feature
of freeing vmemmap pages of HugeTLB pages.

v2:
  - Fix compilation when !CONFIG_MHP_MEMMAP_ON_MEMORY reported by kernel
    test robot <lkp@...el.com>.
  - Move sysctl code from kernel/sysctl.c to mm/hugetlb_vmemmap.c.

Muchun Song (3):
  mm: hugetlb: disable freeing vmemmap pages when struct page crosses
    page boundaries
  sysctl: allow to set extra1 to SYSCTL_ONE
  mm: hugetlb: add hugetlb_free_vmemmap sysctl

 Documentation/admin-guide/sysctl/vm.rst | 13 ++++++++++
 include/linux/memory_hotplug.h          |  9 +++++++
 kernel/sysctl.c                         |  2 +-
 mm/hugetlb_vmemmap.c                    | 43 ++++++++++++++++++++++++++++++++-
 mm/hugetlb_vmemmap.h                    |  4 ++-
 mm/memory_hotplug.c                     |  5 ++++
 6 files changed, 73 insertions(+), 3 deletions(-)

-- 
2.11.0