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Mon, 16 Mar 2026 17:56:55 +0300 Message-ID: <224a29a1-13cb-41aa-8736-aebe1023fb7d@huawei-partners.com> Date: Mon, 16 Mar 2026 17:56:55 +0300 MIME-Version: 1.0 User-Agent: Mozilla Thunderbird Subject: Re: [PATCH v1 1/1] Docs/mm/damon: Document DAMON actions when TRANSPARENT_HUGEPAGE is off To: SeongJae Park CC: , , , , , , , , , , , , , , , , , References: <20260316144848.99972-1-sj@kernel.org> Content-Language: en-US From: Gutierrez Asier In-Reply-To: <20260316144848.99972-1-sj@kernel.org> Content-Type: text/plain; charset="UTF-8" Content-Transfer-Encoding: 7bit X-Originating-IP: [10.123.123.154] X-ClientProxiedBy: mscpeml500004.china.huawei.com (7.188.26.250) To mscpeml500003.china.huawei.com (7.188.49.51) X-Rspam-User: X-Rspamd-Server: rspam11 X-Rspamd-Queue-Id: 12A11C000A X-Stat-Signature: z4qn4hysfbrpx5emzrxsfkrk9jrcn1z9 X-HE-Tag: 1773673019-66951 X-HE-Meta: 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 Vtw125kC Sa5SKfQ1gEHiEa9yvvuO30SVBDdIsiaSZ6KeqIE5k87S+2de9/IYn/L6p7uyOSZ5ESUgSy3+PGOGhS0p9P/0zQnmk5K+BI+zJhLONJ3JdG/Rd4cIFWmdixoBgnI73BY4Q5iGOaa4wyrgWUezqo1vIl+Rx0AX3bocUONFRu7Kwax7raBqjygfDIP5wzc/Qwi3rF6pivEstzBf7O9hJFBJhgKvM608N08dJ/vn//fjk8TOu8+60RAmLGBDj7rgXKAEl4J7+v8hkdH8Fvn322QB6+/o0PMFMi27+Vl0QFMB4RALocdPEYhocDL+5UQL9t0IkMnXKpwlJdK4EjkzqJmo2a/1IYh/aL7P5r4N4 Sender: owner-linux-mm@kvack.org Precedence: bulk X-Loop: owner-majordomo@kvack.org List-ID: List-Subscribe: List-Unsubscribe: Hi SJ, On 3/16/2026 5:48 PM, SeongJae Park wrote: > 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 Yes, this is due to the link. I tried to keep this patch compact, without a cover letter. I will submit a new version without the link. >> 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 > > [...] > -- Asier Gutierrez Huawei