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 Received: from vger.kernel.org (vger.kernel.org [23.128.96.18]) by smtp.lore.kernel.org (Postfix) with ESMTP id EEB59C433EF for ; Thu, 23 Jun 2022 04:44:03 +0000 (UTC) Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S232105AbiFWEoC (ORCPT ); Thu, 23 Jun 2022 00:44:02 -0400 Received: from lindbergh.monkeyblade.net ([23.128.96.19]:59946 "EHLO lindbergh.monkeyblade.net" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1346223AbiFWEYM (ORCPT ); Thu, 23 Jun 2022 00:24:12 -0400 Received: from mail-pl1-x632.google.com (mail-pl1-x632.google.com [IPv6:2607:f8b0:4864:20::632]) by lindbergh.monkeyblade.net (Postfix) with ESMTPS id 43AF72DAB6 for ; Wed, 22 Jun 2022 21:24:10 -0700 (PDT) Received: by mail-pl1-x632.google.com with SMTP id r1so17097041plo.10 for ; Wed, 22 Jun 2022 21:24:10 -0700 (PDT) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=gmail.com; s=20210112; h=date:from:to:cc:subject:message-id:references:mime-version :content-disposition:in-reply-to; bh=bekEvBrAwf7ehOt0TA5QrhCy5PmAltJgEblnufPH3EM=; b=KdK//VDD6kx3P/ZIaXk4K6S5ZpICov0tsGYyxei43BtZQKnuyDJxSU0cnYIifkHFzx BKXti9irzZRt0NTnpWEneOktfgc8vg/c3JJzUGg7NpkTgfzaJ6bRsm+hcjjCpGvZM217 WcZtWX5NY2NHXn57moxaN6df9Vhca/gICgKM6qIuBIsV2Yyb9xLKBo6xywFHxXJD9JsI k3FFGu6LdvBM73ckEccNe8IZazkeuCpi24N5NTCpR88xbY5xGQkcU1D2VQTqYi6jjeMg 7cZHzaShitlKiM/kpo1E0QJeknFfXoBBZd/knDBKCknfmaogY8RCJms/gwAAbKuaVB8r bbeQ== X-Google-DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=1e100.net; s=20210112; h=x-gm-message-state:date:from:to:cc:subject:message-id:references :mime-version:content-disposition:in-reply-to; bh=bekEvBrAwf7ehOt0TA5QrhCy5PmAltJgEblnufPH3EM=; b=37YksUetLt0ju45lKaNSrbThpP17Eh8PRfLyv0N4Wajo385UfRN6lUaZhTOBL/RD0q z7/qQvOn/v7Z4+LVUnyZIPCHUBxxnMQ+2Byk+R/cGOJnEkK+z8B2qN4RMZKoWyZFyDYN t8cowVbXqTDoVRHhb2Xq/nL/ZjPSG/r5YXfmJUXGsByOkyCFEDx/8SgfX9Bq8d907M85 rbJ4kQkI97BcBUdQcCcgGx2QA2QIkt6+VsH7CJC4Ip8lgJP/6DZ08wr4+dERa1Yw7FQ1 ysafaKvxTqlknquEFNFp/aQgvPBmm+PcG79fzDwwi21qb4UkAF4jibwFAD7kao4su3Bd FCHQ== X-Gm-Message-State: AJIora+rHIjXNLxHEEkUkdMCgwk31U7BnzXEzym2eoCqAclNIy58GCi4 xQ7SgXfMNtb1b1HaEL4GSxs= X-Google-Smtp-Source: AGRyM1vsLWvBZGegv7wcX1GkV0vLTjBiqD54awG+CV1o5P+AD5DBf2qnKRGasNxwEIhUWq2/zkNtgA== X-Received: by 2002:a17:903:2585:b0:16a:3c86:c76b with SMTP id jb5-20020a170903258500b0016a3c86c76bmr10134891plb.88.1655958249566; Wed, 22 Jun 2022 21:24:09 -0700 (PDT) Received: from liuchao-VM ([156.236.96.165]) by smtp.gmail.com with ESMTPSA id jb11-20020a170903258b00b0016a18ee30b5sm8208734plb.293.2022.06.22.21.24.06 (version=TLS1_3 cipher=TLS_AES_256_GCM_SHA384 bits=256/256); Wed, 22 Jun 2022 21:24:08 -0700 (PDT) Date: Thu, 23 Jun 2022 12:24:04 +0800 From: Chao Liu To: Chao Yu Cc: Jaegeuk Kim , linux-f2fs-devel@lists.sourceforge.net, linux-kernel@vger.kernel.org, Yue Hu , Wayne Zhang , Chao Liu Subject: Re: [PATCH] f2fs: allow compression of files without blocks Message-ID: References: <20220621064202.1078536-1-chaoliu719@gmail.com> <7fb689d9-11ba-a173-8ad4-a328a03298a8@kernel.org> MIME-Version: 1.0 Content-Type: text/plain; charset=us-ascii Content-Disposition: inline In-Reply-To: <7fb689d9-11ba-a173-8ad4-a328a03298a8@kernel.org> Precedence: bulk List-ID: X-Mailing-List: linux-kernel@vger.kernel.org On Wed, Jun 22, 2022 at 08:50:33PM +0800, Chao Yu wrote: > On 2022/6/21 14:42, Chao Liu wrote: > > From: Chao Liu > > > > Files created by truncate have a size but no blocks, so > > I didn't get it, how can we create file by truncation... I'm sorry I didn't make it clear. We can create a file by passing a FILE parameter that does not exist to the user command truncate(1) [1]. How about using truncate(1) instead of truncate in the description of the change? Thanks, [1] truncate(1): https://man7.org/linux/man-pages/man1/truncate.1.html