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Sun, 08 Jun 2025 22:56:51 -0700 (PDT) X-Google-Smtp-Source: AGHT+IF3C11sjnjbTZhny9xnmroD6QMw7j0geEYJv4f/FkqQZmNJJLMcJ6M9t7YznoNmfL2tiNujdo8+9UaKO9hzluo= X-Received: by 2002:a05:690c:6405:b0:70e:719e:75e with SMTP id 00721157ae682-710f764c725mr159460177b3.9.1749448611470; Sun, 08 Jun 2025 22:56:51 -0700 (PDT) MIME-Version: 1.0 References: <20250515032226.128900-1-npache@redhat.com> <20250515032226.128900-13-npache@redhat.com> <4a2c359e-79d9-447b-a43e-164333d08319@linux.alibaba.com> In-Reply-To: <4a2c359e-79d9-447b-a43e-164333d08319@linux.alibaba.com> From: Nico Pache Date: Sun, 8 Jun 2025 23:56:25 -0600 X-Gm-Features: AX0GCFvmuZajSTbsu_WiqNIkiQcNxDc31lsw2O8E2jnjV1KK5u2qYW0RnE8tmzQ Message-ID: Subject: Re: [PATCH v7 12/12] Documentation: mm: update the admin guide for mTHP collapse To: Baolin Wang Cc: Dev Jain , linux-mm@kvack.org, linux-doc@vger.kernel.org, linux-kernel@vger.kernel.org, linux-trace-kernel@vger.kernel.org, david@redhat.com, ziy@nvidia.com, lorenzo.stoakes@oracle.com, Liam.Howlett@oracle.com, ryan.roberts@arm.com, corbet@lwn.net, rostedt@goodmis.org, mhiramat@kernel.org, mathieu.desnoyers@efficios.com, akpm@linux-foundation.org, baohua@kernel.org, willy@infradead.org, peterx@redhat.com, wangkefeng.wang@huawei.com, usamaarif642@gmail.com, sunnanyong@huawei.com, vishal.moola@gmail.com, thomas.hellstrom@linux.intel.com, yang@os.amperecomputing.com, kirill.shutemov@linux.intel.com, aarcange@redhat.com, raquini@redhat.com, anshuman.khandual@arm.com, catalin.marinas@arm.com, tiwai@suse.de, will@kernel.org, dave.hansen@linux.intel.com, jack@suse.cz, cl@gentwo.org, jglisse@google.com, surenb@google.com, zokeefe@google.com, hannes@cmpxchg.org, rientjes@google.com, mhocko@suse.com, rdunlap@infradead.org, Bagas Sanjaya X-Mimecast-Spam-Score: 0 X-Mimecast-MFC-PROC-ID: QUp86ZLUJZACcVt0oDgWtmCNTQPMlXyuxu4Rrw7cBCU_1749448612 X-Mimecast-Originator: redhat.com Content-Type: text/plain; charset="UTF-8" Content-Transfer-Encoding: quoted-printable X-Rspamd-Queue-Id: 3559B18000A X-Stat-Signature: cn9wngdcgxsdrmm4gjo3q6zm9oeskpwz X-Rspam-User: X-Rspamd-Server: rspam07 X-HE-Tag: 1749448616-530943 X-HE-Meta: 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 XOlwxL9+ ZB7bsIfgtmfiavCD7SdskGSGrr8or6xVNO5b8WYni2Ds4Htd9cRQ4VfT4ceJO1V3USCb2ExjLMbMWV8BDLNvIc/my3bHI5YAVy/nvIkdV1ND6Qc0INNeFMNnLEe54SJhfEYvj/p5jxSZEQ1xLAIwvmBw/5wh6QNRVYz8ITEMxL6q4yo8y3nEBlDHKHC40IQu15fVUNCWSmvDkFzHgUvuiFjoT9kE+86KE/z6TC0OXEwbLNt9eKwUY/EHxgOPqN+eL3413QEr6zLCR8/2PYTB94sEyewkNq5u/TsDRU8UlYMdIu8oWe/PDkvMW7a+tirSiWd1RWvm9S6hRPd6hvkqXMFaol34Au7sSzB+BYMlASYu5dfrNW+lXn+rfEkn1LYrbLcbKgmDhVU7mS9M15Nmz+Gb7qIWLIt8ufukY7BAwU93VIV5xtAgHDuJcR7IW+pYWmiTiti6FMrfE80uhe31a/BuImP+xJrjp6+i5 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: List-Subscribe: List-Unsubscribe: On Sun, Jun 8, 2025 at 9:06=E2=80=AFPM Baolin Wang wrote: > > > > On 2025/6/9 03:50, Nico Pache wrote: > > On Sat, Jun 7, 2025 at 8:35=E2=80=AFAM Dev Jain wrot= e: > >> > >> > >> On 07/06/25 6:27 pm, Nico Pache wrote: > >>> On Sat, Jun 7, 2025 at 12:45=E2=80=AFAM Dev Jain w= rote: > >>>> > >>>> On 15/05/25 8:52 am, Nico Pache wrote: > >>>> > >>>> Now that we can collapse to mTHPs lets update the admin guide to > >>>> reflect these changes and provide proper guidence on how to utilize = it. > >>>> > >>>> Reviewed-by: Bagas Sanjaya > >>>> Signed-off-by: Nico Pache > >>>> --- > >>>> Documentation/admin-guide/mm/transhuge.rst | 14 +++++++++++++- > >>>> 1 file changed, 13 insertions(+), 1 deletion(-) > >>>> > >>>> diff --git a/Documentation/admin-guide/mm/transhuge.rst b/Documentat= ion/admin-guide/mm/transhuge.rst > >>>> index dff8d5985f0f..5c63fe51b3ad 100644 > >>>> --- a/Documentation/admin-guide/mm/transhuge.rst > >>>> +++ b/Documentation/admin-guide/mm/transhuge.rst > >>>> > >>>> > >>>> We need to modify/remove the following paragraph: > >>>> > >>>> khugepaged currently only searches for opportunities to collapse to > >>>> PMD-sized THP and no attempt is made to collapse to other THP > >>>> sizes. > >>> On this version this is currently still true, but once I add Baolin's > >>> patch it will not be true. Thanks for the reminder :) > >> > >> You referenced Baolin's patch in the other email too, can you send the= link, > >> or the patch? > > > > He didn't send it to the mailing list, but rather off chain to all the > > recipients of this series. You should have it in your email look for > > > > Subject: "mm: khugepaged: allow khugepaged to check all anonymous mTHP > > orders" and "mm: khugepaged: kick khugepaged for enabling > > none-PMD-sized mTHPs" > > You can find them at the following link: > https://lore.kernel.org/all/ac9ed6d71b439611f9c94b3506a8ce975d4636e9.1748= 435162.git.baolin.wang@linux.alibaba.com/ Ah whoops you did send them on-chain. I'm so used to seeing the mailing lists as the first recipients on the CC list xD >