From mboxrd@z Thu Jan 1 00:00:00 1970 Received: from mail-ej1-f45.google.com (mail-ej1-f45.google.com [209.85.218.45]) (using TLSv1.2 with cipher ECDHE-RSA-AES128-GCM-SHA256 (128/128 bits)) (No client certificate requested) by smtp.subspace.kernel.org (Postfix) with ESMTPS id D7654199930 for ; Wed, 21 Aug 2024 12:46:30 +0000 (UTC) Authentication-Results: smtp.subspace.kernel.org; arc=none smtp.client-ip=209.85.218.45 ARC-Seal:i=1; a=rsa-sha256; d=subspace.kernel.org; s=arc-20240116; t=1724244393; cv=none; b=K3TYDVNpel3HO9gLTlTU2so9HluFXJnL26PqIOH+fb3oimtod9P33/lJIeuo5kcB7Ae++YdOE1I3x+xX1LAI5bMFuTYHY3Li0iNarwn92wqtQkx/EVanpgJP27Co/+BTpeghJRSDjgdAX9zMj0wBX8Ecfv5L4kjh8rHZfVpVjOE= ARC-Message-Signature:i=1; a=rsa-sha256; d=subspace.kernel.org; s=arc-20240116; t=1724244393; c=relaxed/simple; bh=u6b5rlgS6etWV95fNigBuHk9KVmkdeoUxs/HCe/Yqr8=; h=Date:From:To:Cc:Subject:Message-ID:References:MIME-Version: Content-Type:Content-Disposition:In-Reply-To; b=g86ZWFxY+kqAWMeWm6N/AXtEN3bvkAoOwbqpokbeW5FCPz68tGnzxJO5QNfoYvNSPDTwH7/1DE6ycqvx2KEvYIzRF4vVM7RW1j4L5UT9B7Dx7OVgmcnghdkUofdVC/CQXln4gXL6WUKTrZICDG/r206XYk6+9fPZrLJtwZhv+KI= ARC-Authentication-Results:i=1; smtp.subspace.kernel.org; dmarc=pass (p=quarantine dis=none) header.from=suse.com; spf=pass smtp.mailfrom=suse.com; dkim=pass (2048-bit key) header.d=suse.com header.i=@suse.com header.b=CDgZsUrT; arc=none smtp.client-ip=209.85.218.45 Authentication-Results: smtp.subspace.kernel.org; dmarc=pass (p=quarantine dis=none) header.from=suse.com Authentication-Results: smtp.subspace.kernel.org; spf=pass smtp.mailfrom=suse.com Authentication-Results: smtp.subspace.kernel.org; dkim=pass (2048-bit key) header.d=suse.com header.i=@suse.com header.b="CDgZsUrT" Received: by mail-ej1-f45.google.com with SMTP id a640c23a62f3a-a7de4364ca8so731202466b.2 for ; Wed, 21 Aug 2024 05:46:29 -0700 (PDT) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=suse.com; s=google; t=1724244388; x=1724849188; darn=vger.kernel.org; h=in-reply-to:content-disposition:mime-version:references:message-id :subject:cc:to:from:date:from:to:cc:subject:date:message-id:reply-to; bh=WPDxfukU7D+k6PvjY6DO8kGFmU418euxtFR1jxG8a3U=; b=CDgZsUrTC8kxdzfnqgwvbt2EAFwVn4zG/ztZJBN+zDR5eyp5gP1DPcbSyOFxqJpkaV Rgf91CldmbJ2NJrdqki6U54gcqhxsiR0kRMFUxoA+hgfwAH7vqSO7K+5nX7+R5VMFYoX Y8IAphKGsxlHQOVUHgUcM/fQTnwU2Hqu2RXORm3KKg0P06oJNW49Ylla935qVMulOR0l vg5LfmyEg8+fGhvN/SODyAekkFULyJhnRmpND/hQz4LieGCAFVt2rwI7jmtrk5iJrLBq JMuckNq3iiM/92C4VrpeOqbzcFh/A8gBttKf9wxBaEBCFABZBWe2AUoekl+1V08vH0pu 5/Lw== X-Google-DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=1e100.net; s=20230601; t=1724244388; x=1724849188; h=in-reply-to:content-disposition:mime-version:references:message-id :subject:cc:to:from:date:x-gm-message-state:from:to:cc:subject:date :message-id:reply-to; bh=WPDxfukU7D+k6PvjY6DO8kGFmU418euxtFR1jxG8a3U=; b=jdUYa5PuvD8dM/Nv0Lqv9VKTtFAx8rN13Enb6anx1iqR68HuZp52yKG7ZIH5R4SSfQ /Qvvj1h0owuTvVwCoCXEoouI9IxbhSDMIgpwIzILoq7r83E+IEJQZCljYXyteqqsRnH4 jOTy8ZXqbkFY4qz71hsu0v831oJfUHnEvv2USBSNEkI704pB6vby8efvj7WgNT+5uRTm pa5Dyf11mh5OaUxZWtwBu4IDHTzjIBSZenbJnBm8awRgdHFCGgB0TDgokCPOAN080xiD 3RDiYy1yXDp+e91ul9stbc9YGwoUY7zZyPjCn4R4YLjmNP7ukvt08fIRERpic3ZmuWwh yEEQ== X-Forwarded-Encrypted: i=1; AJvYcCXfeDUlAxe868kSaIZCeA+XHZiacP7RPG2UH4QA6/+U7+5Y84SLIUcTVpWroSXIVlop5ckLjkU9z+fYTjU=@vger.kernel.org X-Gm-Message-State: AOJu0Yx8V8txEaUh/YMIWzoPRGCicCPaypBO9nQkT7TBk3GipsdADgWg g5vjycxtNHGEPOvnotbVk7/GLI/u/u/dOMk8tcbl2ueCBKqeY/utZXO8uqozQVA= X-Google-Smtp-Source: AGHT+IHn4E5EqjDPKeqAdrDFu+oHOt1XiIACiD1UV6BOgaaiUHaMkH9DJkd7w5V2YdfWdsj7RhtZjA== X-Received: by 2002:a17:906:6a12:b0:a86:43c0:4270 with SMTP id a640c23a62f3a-a866f120169mr123879966b.13.1724244388493; Wed, 21 Aug 2024 05:46:28 -0700 (PDT) Received: from localhost ([193.86.92.181]) by smtp.gmail.com with ESMTPSA id a640c23a62f3a-a83838d0271sm892634966b.82.2024.08.21.05.46.28 (version=TLS1_3 cipher=TLS_AES_256_GCM_SHA384 bits=256/256); Wed, 21 Aug 2024 05:46:28 -0700 (PDT) Date: Wed, 21 Aug 2024 14:46:27 +0200 From: Michal Hocko To: gaoxu Cc: Andrew Morton , "linux-mm@kvack.org" , "linux-kernel@vger.kernel.org" , Suren Baghdasaryan , Shaohua Li , yipengxiang , fengbaopeng , Kalesh Singh Subject: Re: [PATCH v2] mm: add lazyfree folio to lru tail Message-ID: References: Precedence: bulk X-Mailing-List: linux-kernel@vger.kernel.org List-Id: List-Subscribe: List-Unsubscribe: MIME-Version: 1.0 Content-Type: text/plain; charset=us-ascii Content-Disposition: inline In-Reply-To: On Fri 16-08-24 07:48:01, gaoxu wrote: > Replace lruvec_add_folio with lruvec_add_folio_tail in the lru_lazyfree_fn: > 1. The lazy-free folio is added to the LRU_INACTIVE_FILE list. If it's > moved to the LRU tail, it allows for faster release lazy-free folio and > reduces the impact on file refault. This has been discussed when MADV_FREE was introduced. The question was whether this memory has a lower priority than other inactive memory that has been marked that way longer ago. Also consider several MADV_FREE users should they be LIFO from the reclaim POV? -- Michal Hocko SUSE Labs