From mboxrd@z Thu Jan 1 00:00:00 1970 Received: from smtp.kernel.org (aws-us-west-2-korg-mail-alma10-1.taild15c8.ts.net [100.103.45.18]) (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 E5585314B72 for ; Sat, 27 Jun 2026 08:10:37 +0000 (UTC) Authentication-Results: smtp.subspace.kernel.org; arc=none smtp.client-ip=100.103.45.18 ARC-Seal:i=1; a=rsa-sha256; d=subspace.kernel.org; s=arc-20240116; t=1782547838; cv=none; b=OggEEu4RNQDMeO3hcDFAMkU8xX2NJ0DXdf9hU77/bhIt7+crSXOSXqtJCvVGAXBeqZn9t1Qvhw1lQ3IgXabQHyWxz6/DCBCCCArezmrBl7LUlN1MNaubNdsTqi5ksNweqFcWfkNzita2VsQLsZdML26XofFwuYKdBpGd3O/SICc= ARC-Message-Signature:i=1; a=rsa-sha256; d=subspace.kernel.org; s=arc-20240116; t=1782547838; c=relaxed/simple; bh=7QR8iNlN+gLOoaFYr8Q792T/nwU/77lfRKj+qJF2WL0=; h=Date:From:To:Cc:Subject:Message-ID:References:MIME-Version: Content-Type:Content-Disposition:In-Reply-To; b=ouQ8xeqXjTLnfLKN075DhcLwejzIRBCNqkCc9C8QkEueceO38ilES/DnqhA8pHEZvwRhs5VGeOUEkr45HIBynOPTRpYZv8tdvPJB2+WzzHisT0Cf8Zlv7pPtdfam85bcxP1x4zGAB8NZo8cMCbKJdtHWD24Pa2Tnkxagv+u3P84= ARC-Authentication-Results:i=1; smtp.subspace.kernel.org; dkim=pass (2048-bit key) header.d=kernel.org header.i=@kernel.org header.b=QKpWqi5J; arc=none smtp.client-ip=100.103.45.18 Authentication-Results: smtp.subspace.kernel.org; dkim=pass (2048-bit key) header.d=kernel.org header.i=@kernel.org header.b="QKpWqi5J" Received: by smtp.kernel.org (Postfix) with ESMTPSA id 54FAE1F000E9; Sat, 27 Jun 2026 08:10:31 +0000 (UTC) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=kernel.org; s=k20260515; t=1782547837; bh=eTAIgWxGNpSg69lMclaqMrON/rAaetWWrjF7qKqNzt4=; h=Date:From:To:Cc:Subject:References:In-Reply-To; b=QKpWqi5JrQfOQROMv2OSoXTAaY7IRR3sO0WfuN1qvx1l2b0oHysMy4PHVXzw+V8Rr Brc0qkFTaSTrRE8sPsc+TWz6aiPQ8SLd687MoNACrxWKQ3qM+Bu7wpx5DRbwjRLbnC A93OT2JhcsDrBwwC7LzPA0McritfSWefHzc7a1loENR2MEi4uUZi+U4R/9cZwhGJzo 8AQJS7jL/xYrUW7rx/x+gB+nsuHYcCizs1eqt14X6rq6DJ0VnPv6tnNqoj8Pj1PTHJ E0PsLlxHputgytZLZP4n3mT5N0I1ZTN1kHM95ZbK0NSQAaCXsqJjHLnq2fvjtokAD4 +h0iN8Cvnz85A== Date: Sat, 27 Jun 2026 11:10:27 +0300 From: Mike Rapoport To: Gladyshev Ilya Cc: Linus Torvalds , Andrew Morton , ivgorbunov@me.com, Liam.Howlett@oracle.com, apopple@nvidia.com, artem.kuzin@huawei.com, baolin.wang@linux.alibaba.com, foxido@foxido.dev, harry.yoo@oracle.com, linux-kernel@vger.kernel.org, linux-mm@kvack.org, lorenzo.stoakes@oracle.com, mhocko@suse.com, muchun.song@linux.dev, surenb@google.com, vbabka@suse.cz, yuzhao@google.com, ziy@nvidia.com, pfalcato@suse.de, kirill@shutemov.name Subject: Re: [PATCH v5 0/2] mm: improve folio refcount scalability 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, Jun 26, 2026 at 06:44:58PM +0000, Gladyshev Ilya wrote: > > This patch optimizes small file read performance and overall folio refcount > scalability by refactoring page_ref_add_unless [core of folio_try_get]. > This is alternative approach to previous attempts to fix small read > performance by avoiding refcount bumps [1][2]. Looks like memory-failure selftest is not happy: https://github.com/linux-mm/linux-mm/actions/runs/28259343162/job/83730467505 -- Sincerely yours, Mike.