From mboxrd@z Thu Jan 1 00:00:00 1970 Return-Path: X-Spam-Checker-Version: SpamAssassin 3.4.0 (2014-02-07) on aws-us-west-2-korg-lkml-1.web.codeaurora.org X-Spam-Level: X-Spam-Status: No, score=-5.4 required=3.0 tests=BAYES_00, HEADER_FROM_DIFFERENT_DOMAINS,MAILING_LIST_MULTI,NICE_REPLY_A,SPF_HELO_NONE, SPF_PASS,USER_AGENT_SANE_1 autolearn=no autolearn_force=no version=3.4.0 Received: from mail.kernel.org (mail.kernel.org [198.145.29.99]) by smtp.lore.kernel.org (Postfix) with ESMTP id 600ECC433E6 for ; Fri, 12 Feb 2021 16:10:27 +0000 (UTC) Received: from vger.kernel.org (vger.kernel.org [23.128.96.18]) by mail.kernel.org (Postfix) with ESMTP id 2C33364E70 for ; Fri, 12 Feb 2021 16:10:27 +0000 (UTC) Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S229611AbhBLQK0 (ORCPT ); Fri, 12 Feb 2021 11:10:26 -0500 Received: from mx2.suse.de ([195.135.220.15]:35908 "EHLO mx2.suse.de" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S229493AbhBLQKZ (ORCPT ); Fri, 12 Feb 2021 11:10:25 -0500 X-Virus-Scanned: by amavisd-new at test-mx.suse.de Received: from relay2.suse.de (unknown [195.135.221.27]) by mx2.suse.de (Postfix) with ESMTP id 4DF8EAD29; Fri, 12 Feb 2021 16:09:42 +0000 (UTC) Subject: Re: [PATCH 00/20] bcache patches for Linux v5.12 To: Jens Axboe Cc: linux-bcache@vger.kernel.org, linux-block@vger.kernel.org, Jianpeng Ma , Qiaowei Ren , Kai Krakow References: <20210210050742.31237-1-colyli@suse.de> <50173dee-31dd-9951-bc7f-b5247a46ef5e@kernel.dk> From: Coly Li Message-ID: <4f6a39e3-f80b-cdc2-aa50-5aa44a6fb8eb@suse.de> Date: Sat, 13 Feb 2021 00:09:38 +0800 User-Agent: Mozilla/5.0 (Macintosh; Intel Mac OS X 10.16; rv:78.0) Gecko/20100101 Thunderbird/78.7.0 MIME-Version: 1.0 In-Reply-To: <50173dee-31dd-9951-bc7f-b5247a46ef5e@kernel.dk> Content-Type: text/plain; charset=utf-8 Content-Language: en-US Content-Transfer-Encoding: 7bit Precedence: bulk List-ID: X-Mailing-List: linux-bcache@vger.kernel.org On 2/10/21 11:11 PM, Jens Axboe wrote: > On 2/9/21 10:07 PM, Coly Li wrote: >> Hi Jens, >> >> This is the first wave bcache patches for Linux v5.12. >> >> It is nice to see in this round we have 3 new patch contributors: >> Jianpeng Ma, Qiaowei Ren and Kai Krakow. >> >> In this series, the EXPERIMENTAL patches from Jianpeng Ma, Qiaowei Ren >> and me are initial effort to store bcache meta-data on NVDIMM namespace. >> The NVDIMM space is managed and mapped via DAX interface, and accessed >> by linear address. In this submission we store bcache journal on NVDIMM, >> in future bcache btree nodes and other meta data will be added in too, >> before we remove the EXPERIMENTAL statues. >> >> Dongdong Tao contributes a performance optimization when >> bcache cache buckets are highly fregmented, Dongdong's patch makes the >> dirty data writeback faster and from his benchmark reprots such changes >> have recognized improvement for randome write I/O thoughput and latency >> for highly fregmented buckets, and no regression for regular I/O >> observed. >> >> Kai Krakow contributes 4 patches to offload system_wq usage to separated >> btree_io_wq and bch_flush_wq. In his environment the daily backup job >> throughput increases from 60.2MB/s to 419MB/s and accomplished time >> reduced from 14h29m to 2h13m. >> >> Joe Perches also contributes a fine code stype fix which I pick for this >> submission. >> >> Please take them for Linux v5.12 merge window. > > Applied 1-6 for now, that weird situation with the user visible header > needs to get resolved before it can go any further. > Thanks for taking care of the patches and offering your opinion. I will ask you and other developers' suggestion for a proper form for the data structure definition. Coly Li