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=-10.3 required=3.0 tests=BAYES_00, HEADER_FROM_DIFFERENT_DOMAINS,INCLUDES_CR_TRAILER,MAILING_LIST_MULTI, NICE_REPLY_A,SPF_HELO_NONE,SPF_PASS,USER_AGENT_SANE_1 autolearn=ham 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 AFA39C64E75 for ; Fri, 27 Nov 2020 01:21:33 +0000 (UTC) Received: from vger.kernel.org (vger.kernel.org [23.128.96.18]) by mail.kernel.org (Postfix) with ESMTP id 6EEDF22210 for ; Fri, 27 Nov 2020 01:21:33 +0000 (UTC) Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S2392110AbgK0BBx (ORCPT ); Thu, 26 Nov 2020 20:01:53 -0500 Received: from szxga04-in.huawei.com ([45.249.212.190]:8127 "EHLO szxga04-in.huawei.com" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S2392103AbgK0BBw (ORCPT ); Thu, 26 Nov 2020 20:01:52 -0500 Received: from DGGEMS411-HUB.china.huawei.com (unknown [172.30.72.60]) by szxga04-in.huawei.com (SkyGuard) with ESMTP id 4ChxCX3pvJz15SNK; Fri, 27 Nov 2020 09:01:28 +0800 (CST) Received: from [10.136.114.67] (10.136.114.67) by smtp.huawei.com (10.3.19.211) with Microsoft SMTP Server (TLS) id 14.3.487.0; Fri, 27 Nov 2020 09:01:47 +0800 Subject: Re: [f2fs-dev] [PATCH v2] f2fs: compress: add compress_inode to cache compressed blocks To: Eric Biggers CC: , , References: <20201126103709.80006-1-yuchao0@huawei.com> From: Chao Yu Message-ID: <7ecb947e-2f8c-abd7-c116-c82c474fded7@huawei.com> Date: Fri, 27 Nov 2020 09:01:47 +0800 User-Agent: Mozilla/5.0 (Windows NT 10.0; WOW64; rv:52.0) Gecko/20100101 Thunderbird/52.9.1 MIME-Version: 1.0 In-Reply-To: Content-Type: text/plain; charset="windows-1252"; format=flowed Content-Language: en-US Content-Transfer-Encoding: 7bit X-Originating-IP: [10.136.114.67] X-CFilter-Loop: Reflected Precedence: bulk List-ID: X-Mailing-List: linux-kernel@vger.kernel.org On 2020/11/27 1:55, Eric Biggers wrote: > On Thu, Nov 26, 2020 at 06:37:09PM +0800, Chao Yu wrote: >> Support to use address space of inner inode to cache compressed block, >> in order to improve cache hit ratio of random read. >> >> Signed-off-by: Chao Yu > > If the file is also encrypted, are the compressed pages that are cached still > encrypted, or are they decrypted? In current implementation, they are decrypted in cache. Thanks, > > - Eric > . >