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[2003:cb:c705:2600:951d:63df:c091:3b45]) by smtp.gmail.com with ESMTPSA id m15-20020a05600c3b0f00b003974ca9fa6dsm6843655wms.2.2022.06.01.03.10.29 (version=TLS1_3 cipher=TLS_AES_128_GCM_SHA256 bits=128/128); Wed, 01 Jun 2022 03:10:30 -0700 (PDT) Message-ID: Date: Wed, 1 Jun 2022 12:10:29 +0200 MIME-Version: 1.0 User-Agent: Mozilla/5.0 (X11; Linux x86_64; rv:91.0) Gecko/20100101 Thunderbird/91.9.0 Subject: Re: [PATCH 3/3] mm: hugetlb_vmemmap: cleanup CONFIG_HUGETLB_PAGE_FREE_VMEMMAP* To: Muchun Song Cc: mike.kravetz@oracle.com, akpm@linux-foundation.org, linux-mm@kvack.org, linux-kernel@vger.kernel.org, smuchun@bytedance.com References: <20220404074652.68024-1-songmuchun@bytedance.com> <20220404074652.68024-4-songmuchun@bytedance.com> From: David Hildenbrand Organization: Red Hat In-Reply-To: X-Mimecast-Spam-Score: 0 X-Mimecast-Originator: redhat.com Content-Language: en-US Content-Type: text/plain; charset=UTF-8 Content-Transfer-Encoding: 7bit X-Rspam-User: Authentication-Results: imf27.hostedemail.com; dkim=pass header.d=redhat.com header.s=mimecast20190719 header.b=Psk9SMG9; dmarc=pass (policy=none) header.from=redhat.com; spf=none (imf27.hostedemail.com: domain of david@redhat.com has no SPF policy when checking 170.10.133.124) smtp.mailfrom=david@redhat.com X-Rspamd-Server: rspam10 X-Rspamd-Queue-Id: 007764004D X-Stat-Signature: xhuih4b6eihw5kzxfuygm4p9wwayntjw X-HE-Tag: 1654078229-918446 X-Bogosity: Ham, tests=bogofilter, spamicity=0.000000, version=1.2.4 Sender: owner-linux-mm@kvack.org Precedence: bulk X-Loop: owner-majordomo@kvack.org List-ID: On 01.06.22 11:54, Muchun Song wrote: > On Wed, Jun 01, 2022 at 11:32:37AM +0200, David Hildenbrand wrote: >> On 04.04.22 09:46, Muchun Song wrote: >>> The word of "free" is not expressive enough to express the feature of optimizing >>> vmemmap pages associated with each HugeTLB, rename this keywork to "optimeze". >>> In this patch , cheanup configs to make code more expressive. >> >> Nit: why not simply CONFIG_HUGETLB_OPTIMIZE_VMEMMAP if we're touching >> this already? At least I don't see value in the additional "PAGE" :) >> > > I thought it keep consistent with CONFIG_HUGETLB_PAGE. If you think > CONFIG_HUGETLB_OPTIMIZE_VMEMMAP is a better name, maybe we need to > another separate patch since this series is already on mm-stable branch. I see, makes sense then. >>> >>> Signed-off-by: Muchun Song >>> --- >>> Documentation/admin-guide/kernel-parameters.txt | 4 ++-- >>> Documentation/admin-guide/mm/hugetlbpage.rst | 2 +- >>> arch/arm64/Kconfig | 2 +- >>> arch/arm64/mm/flush.c | 2 +- >>> arch/x86/Kconfig | 2 +- >>> arch/x86/mm/init_64.c | 2 +- >>> fs/Kconfig | 16 ++++++++-------- >>> include/linux/hugetlb.h | 2 +- >>> include/linux/mm.h | 2 +- >>> include/linux/page-flags.h | 6 +++--- >>> mm/Makefile | 2 +- >>> mm/hugetlb_vmemmap.c | 4 ++-- >>> mm/hugetlb_vmemmap.h | 4 ++-- >>> mm/sparse-vmemmap.c | 4 ++-- >>> 14 files changed, 27 insertions(+), 27 deletions(-) >>> >>> diff --git a/Documentation/admin-guide/kernel-parameters.txt b/Documentation/admin-guide/kernel-parameters.txt >>> index 56edbe3f458f..89a58ac49d5f 100644 >>> --- a/Documentation/admin-guide/kernel-parameters.txt >>> +++ b/Documentation/admin-guide/kernel-parameters.txt >>> @@ -1660,7 +1660,7 @@ >>> Format: size[KMG] >>> >>> hugetlb_free_vmemmap= >> >> We didn't change the parameter name in #2, correct? >> > > I think this is a interface to users. Is it correct to > change it? I guess so ... I was just wanted to confirm that this is still correct :) -- Thanks, David / dhildenb