From mboxrd@z Thu Jan 1 00:00:00 1970 Received: from out-186.mta0.migadu.com (out-186.mta0.migadu.com [91.218.175.186]) (using TLSv1.2 with cipher ECDHE-RSA-AES256-GCM-SHA384 (256/256 bits)) (No client certificate requested) by smtp.subspace.kernel.org (Postfix) with ESMTPS id 092421A4E70 for ; Wed, 10 Sep 2025 07:21:53 +0000 (UTC) Authentication-Results: smtp.subspace.kernel.org; arc=none smtp.client-ip=91.218.175.186 ARC-Seal:i=1; a=rsa-sha256; d=subspace.kernel.org; s=arc-20240116; t=1757488916; cv=none; b=HbOrpuGyQXatrGBdHivlsLIBBllJTRJV0STOSmmmswrZRhyha7ym1VnJguXolWjKiJ776m3R6spUX/ujo2Nxi30FXsYDxiJH/RcxOIt1mtORChzrdR6ymSYRnNXhO8MSgSB4Zb4tBqzUwaVHc21Tb3vMyLFktxgI+vEQsIdDaXw= ARC-Message-Signature:i=1; a=rsa-sha256; d=subspace.kernel.org; s=arc-20240116; t=1757488916; c=relaxed/simple; bh=geJ0UJM3b7SPADl/tSeh7XgnStA+R2HOh7EaVM0Q1AI=; h=Message-ID:Date:MIME-Version:Subject:To:Cc:References:From: In-Reply-To:Content-Type; b=qBrqSsHkAVph4kyKg1tdPwxyCVnJIZIGJCJLQgHLqJcgfagWX5jTPIwKk3im4d1HF9eXzvMYN9fZg7tE+B0ygJGonek8IvVO9q+t5gB+ZJcbsMpNCtJ9QI4BLCjGYzkq3IZx4SF0k+6uX2jzdDVhGBxkvYAQBvwyX35UGa5FxYY= ARC-Authentication-Results:i=1; smtp.subspace.kernel.org; dmarc=pass (p=none dis=none) header.from=linux.dev; spf=pass smtp.mailfrom=linux.dev; dkim=pass (1024-bit key) header.d=linux.dev header.i=@linux.dev header.b=R1JsHXZK; arc=none smtp.client-ip=91.218.175.186 Authentication-Results: smtp.subspace.kernel.org; dmarc=pass (p=none dis=none) header.from=linux.dev Authentication-Results: smtp.subspace.kernel.org; spf=pass smtp.mailfrom=linux.dev Authentication-Results: smtp.subspace.kernel.org; dkim=pass (1024-bit key) header.d=linux.dev header.i=@linux.dev header.b="R1JsHXZK" Message-ID: DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=linux.dev; s=key1; t=1757488901; h=from:from:reply-to:subject:subject:date:date:message-id:message-id: to:to:cc:cc:mime-version:mime-version:content-type:content-type: content-transfer-encoding:content-transfer-encoding: in-reply-to:in-reply-to:references:references; bh=OAv5/wmgEhBxyGGZDq9dVoGWNpR4NISRNE5iBQbxwr0=; b=R1JsHXZKAHoopuh+8xShMw+SCrTjEhON3EEyKfiPutR/YewjydNo7iet+AGgETh5L8cOdV CTPIgJj9fQOUYNO3NJF33I0UgFNMGet3CwULZHpxHeAwq1kNqNk3CFfpPOKoptodNjwyad 2dN15XdyCZggvLJMdKDfVpniXg2NprI= Date: Wed, 10 Sep 2025 15:21:29 +0800 Precedence: bulk X-Mailing-List: bpf@vger.kernel.org List-Id: List-Subscribe: List-Unsubscribe: MIME-Version: 1.0 Subject: Re: [PATCH v7 mm-new 01/10] mm: thp: remove disabled task from khugepaged_mm_slot Content-Language: en-US To: Yafang Shao Cc: bpf@vger.kernel.org, linux-mm@kvack.org, linux-doc@vger.kernel.org, Lance Yang , shakeel.butt@linux.dev, rientjes@google.com, ast@kernel.org, gutierrez.asier@huawei-partners.com, 21cnbao@gmail.com, daniel@iogearbox.net, ameryhung@gmail.com, corbet@lwn.net, andrii@kernel.org, willy@infradead.org, usamaarif642@gmail.com, hannes@cmpxchg.org, dev.jain@arm.com, baolin.wang@linux.alibaba.com, ziy@nvidia.com, lorenzo.stoakes@oracle.com, david@redhat.com, Liam.Howlett@oracle.com, ryan.roberts@arm.com, npache@redhat.com, akpm@linux-foundation.org References: <20250910024447.64788-1-laoar.shao@gmail.com> <20250910024447.64788-2-laoar.shao@gmail.com> X-Report-Abuse: Please report any abuse attempt to abuse@migadu.com and include these headers. From: Lance Yang In-Reply-To: <20250910024447.64788-2-laoar.shao@gmail.com> Content-Type: text/plain; charset=UTF-8; format=flowed Content-Transfer-Encoding: 7bit X-Migadu-Flow: FLOW_OUT On 2025/9/10 10:44, Yafang Shao wrote: > Since a task with MMF_DISABLE_THP_COMPLETELY cannot use THP, remove it from > the khugepaged_mm_slot to stop khugepaged from processing it. > > After this change, the following semantic relationship always holds: > > MMF_VM_HUGEPAGE is set == task is in khugepaged mm_slot > MMF_VM_HUGEPAGE is not set == task is not in khugepaged mm_slot > > Signed-off-by: Yafang Shao Acked-by: Lance Yang Cheers, Lance