From mboxrd@z Thu Jan 1 00:00:00 1970 Received: from smtp.kernel.org (aws-us-west-2-korg-mail-1.web.codeaurora.org [10.30.226.201]) (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 BE07C381B1; Tue, 23 Jul 2024 17:58:19 +0000 (UTC) Authentication-Results: smtp.subspace.kernel.org; arc=none smtp.client-ip=10.30.226.201 ARC-Seal:i=1; a=rsa-sha256; d=subspace.kernel.org; s=arc-20240116; t=1721757499; cv=none; b=C8fBihZ7QPIl+9Ryy4OuzSaptuZGe02Ofhg90ugMDudlKXJcEQ4fY6MJhyCcwBo2hCP59xTkz0ABP2YXY8dc/Nm9TvSLFizpOc/WZv+Wp4iAlcxyVkMlsa+U05SzaBMnFROnxeTCL44zW87qnR68ndM63tqPMoj5v22eabNN+H0= ARC-Message-Signature:i=1; a=rsa-sha256; d=subspace.kernel.org; s=arc-20240116; t=1721757499; c=relaxed/simple; bh=zpqs01eB+r9f6kaArGfa7scDf/edw0VAmt/EXKackuQ=; h=Date:From:To:Cc:Subject:Message-ID:References:MIME-Version: Content-Type:Content-Disposition:In-Reply-To; b=dbGT0fWaictxy/h30g/anYijKxc1Q28qPw5JeXi/4v4+yyC8zIlxeWAM/0GmqDwKvi9dldsJ50ln9Pxqd6gD6QMCiVYVgm7BBed4KhpAfHgVpzmOmMSPOEFSeu5myR96R8FdIWJXEXOoeuOKPZLjg/lyL8CnxJuhaqZuhgOUNJc= ARC-Authentication-Results:i=1; smtp.subspace.kernel.org; dkim=pass (1024-bit key) header.d=linuxfoundation.org header.i=@linuxfoundation.org header.b=FPsq4UtM; arc=none smtp.client-ip=10.30.226.201 Authentication-Results: smtp.subspace.kernel.org; dkim=pass (1024-bit key) header.d=linuxfoundation.org header.i=@linuxfoundation.org header.b="FPsq4UtM" Received: by smtp.kernel.org (Postfix) with ESMTPSA id D0A7EC4AF09; Tue, 23 Jul 2024 17:58:18 +0000 (UTC) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/simple; d=linuxfoundation.org; s=korg; t=1721757499; bh=zpqs01eB+r9f6kaArGfa7scDf/edw0VAmt/EXKackuQ=; h=Date:From:To:Cc:Subject:References:In-Reply-To:From; b=FPsq4UtMrVh4tmnqKIdEETKig0H5QkPJlaZLVc3KQ7dLo2EyAGH+OXw3IynnKiCFD 6dCO3u0j9XtpkF9H4Hy6kicROmupDksrrqctmM13Y8075pG/AJaV15HcmBR1uzfyFs wpESB0g+CazGiMPgctqHEQXOvtGfHb/ak+IV/Xgw= Date: Tue, 23 Jul 2024 19:58:16 +0200 From: Greg KH To: WangYuli Cc: stable@vger.kernel.org, sashal@kernel.org, yi.zhang@huawei.com, jack@suse.cz, tytso@mit.edu, adilger.kernel@dilger.ca, linux-ext4@vger.kernel.org, linux-kernel@vger.kernel.org, yukuai3@huawei.com, niecheng1@uniontech.com, zhangdandan@uniontech.com, guanwentao@uniontech.com Subject: Re: [PATCH v2 4.19 0/4] ext4: improve delalloc buffer write performance Message-ID: <2024072316-thirty-cytoplasm-2b81@gregkh> References: <78C2D546AD199A57+20240720160420.578940-1-wangyuli@uniontech.com> Precedence: bulk X-Mailing-List: linux-ext4@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: <78C2D546AD199A57+20240720160420.578940-1-wangyuli@uniontech.com> On Sun, Jul 21, 2024 at 12:04:06AM +0800, WangYuli wrote: > Changes since v1: > Fixed some formatting errors to make the patchset less confusing. > > A patchset from linux-5.15 should be backported to 4.19 that can > significantly improve ext4 fs read and write performance. Unixbench test > results for linux-4.19.318 on Phytium D2000 CPU are shown below. Also, this looks like a performance issue, why not just use a newer kernel (i.e. 5.15.y) to get the benefit of this, and many other, increased performance fixes? 4.19.y is only going to be alive for a few more months, if you haven't already planned to move off of it yet, you need to do so now. thanks, greg k-h