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b=erPcNdRrzSzoBmpTVlu95ZNbsecE8P2qaKZt/azsVJzsJxdGOqSRiA+tXJr3zz8s5 TjN08ppq3ADBs1No4j0+PIc614vCK6BijXfQG0ZKphb+tC07jT+ViD4DWkunCDezDP 3URvTNSbxypqqE2HeOA8iNGODdBIDKxg3rr53u4OwKoBbI9lP0rcMQu7tIJbXKhTha M1pdgES13ae3uWawJukxsAuv3PtSvVxSu0LUnPU8R85f8rN5lLkjaKUC6+nLWnLSnj 3/PfNA0uhKHoZcXb9h6v1h9g01QRPnbj0JHYokHNEdnD7Dyndh4Rc9UenF8BBLfnj8 yRS+PDsbp6GwA== From: SeongJae Park To: gutierrez.asier@huawei-partners.com Cc: SeongJae Park , artem.kuzin@huawei.com, stepanov.anatoly@huawei.com, wangkefeng.wang@huawei.com, yanquanmin1@huawei.com, zuoze1@huawei.com, damon@lists.linux.dev, akpm@linux-foundation.org, ljs@kernel.org, Liam.Howlett@oracle.com, vbabka@kernel.org, rppt@kernel.org, surenb@google.com, mhocko@suse.com, corbet@lwn.net, skhan@linuxfoundation.org, linux-doc@vger.kernel.org, linux-mm@kvack.org, linux-kernel@vger.kernel.org Subject: Re: [PATCH v1 1/1] Docs/mm/damon: Document DAMON actions when TRANSPARENT_HUGEPAGE is off Date: Mon, 16 Mar 2026 07:48:47 -0700 Message-ID: <20260316144848.99972-1-sj@kernel.org> X-Mailer: git-send-email 2.47.3 In-Reply-To: <20260316140822.2033181-1-gutierrez.asier@huawei-partners.com> References: MIME-Version: 1.0 Content-Transfer-Encoding: 8bit X-Rspam-User: X-Rspamd-Queue-Id: 17362180008 X-Rspamd-Server: rspam08 X-Stat-Signature: jke6bfdgmsfxpu7cgpsnpkefhxn37scj X-HE-Tag: 1773672589-130196 X-HE-Meta: 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 RaCPI+Qr HVwvb Sender: owner-linux-mm@kvack.org Precedence: bulk X-Loop: owner-majordomo@kvack.org List-ID: List-Subscribe: List-Unsubscribe: Hello Asier, Thank you for sending this patch. :) On Mon, 16 Mar 2026 14:08:21 +0000 wrote: > From: Asier Gutierrez > > MADV_HUGEPAGE and MADV_NOHUGEPAGE are guarded and they > are not available when compiling the kernel without TRANSPARENT_HUGEPAGE > option. The DAMON behaviour is to silently fail[1] in when DAMOS_HUGEPAGE or checkpatch.pl shows a warning for the above line: WARNING: Prefer a maximum 75 chars per line (possible unwrapped commit description?) #12: option. The DAMON behaviour is to silently fail[1] in when DAMOS_HUGEPAGE or > DAMOS_NOHUGEPAGE are used, but TRANSPARENT_HUGEPAGE is disabled. Update the > DAMON documentation to reflect this behaviour. > > [1]: https://lore.kernel.org/damon/66131775-180b-4b9f-b7ce-61a3e077b6e6@huawei-partners.com/T/#m278d3c9bbedcceaf2efa51e3dc7b40a40654e51c > > Signed-off-by: Asier Gutierrez Reviewed-by: SeongJae Park Andrew might add this to mm.git while fixing the checkpatch warning on his own. Let's give time for Andrew today. I also added this to damon/next tree after fixing the warning. If Andrew doesn't pick this with the fix today, I will post mine as v2 of this patch tomorrow. If you prefer to do the v2 posting on your own, just let me know :) Thanks, SJ [...]