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 kanga.kvack.org (kanga.kvack.org [205.233.56.17]) by smtp.lore.kernel.org (Postfix) with ESMTP id 2F543C433F5 for ; Wed, 20 Apr 2022 05:02:27 +0000 (UTC) Received: by kanga.kvack.org (Postfix) id 6C2CA6B0074; Wed, 20 Apr 2022 01:02:26 -0400 (EDT) Received: by kanga.kvack.org (Postfix, from userid 40) id 672156B0075; Wed, 20 Apr 2022 01:02:26 -0400 (EDT) X-Delivered-To: int-list-linux-mm@kvack.org Received: by kanga.kvack.org (Postfix, from userid 63042) id 53AE16B0085; Wed, 20 Apr 2022 01:02:26 -0400 (EDT) X-Delivered-To: linux-mm@kvack.org Received: from relay.hostedemail.com (relay.a.hostedemail.com [64.99.140.24]) by kanga.kvack.org (Postfix) with ESMTP id 409C56B0074 for ; Wed, 20 Apr 2022 01:02:26 -0400 (EDT) Received: from smtpin07.hostedemail.com (a10.router.float.18 [10.200.18.1]) by unirelay10.hostedemail.com (Postfix) with ESMTP id 05364B93 for ; Wed, 20 Apr 2022 05:02:26 +0000 (UTC) X-FDA: 79376061492.07.3A24D5E Received: from bombadil.infradead.org (bombadil.infradead.org [198.137.202.133]) by imf04.hostedemail.com (Postfix) with ESMTP id 08D9F40011 for ; Wed, 20 Apr 2022 05:02:22 +0000 (UTC) DKIM-Signature: v=1; a=rsa-sha256; q=dns/txt; c=relaxed/relaxed; d=infradead.org; s=bombadil.20210309; h=In-Reply-To:Content-Type:MIME-Version :References:Message-ID:Subject:Cc:To:From:Date:Sender:Reply-To: Content-Transfer-Encoding:Content-ID:Content-Description; bh=F1TRa4GgWFl5NwS3j0g57cX1Szs0+a429bfPNvd6Wh4=; b=aow36qpIfTmkQVZ/a9t+WjO2d2 PhZtl5g7RNxNlhtI5UlFdR66JnzwggDW6PsWbhoLPy5f5IwPfnmF0v4fsuxHK6xtm64njV5vIvPGR F1FujOdhxeM6acg+Q/xUltl/5ypMm13ihS8rGHV/ADfGpCeRwAASaNW2JoQPrQWiqNrvoUFqDn5Ux vPWBBcg5xsGz88zvtjoiz1OxFK7Tw+mV0nfTPv8EZF7GV6x8MS1ypxQiHFXUMOA0VcrJbYb8aqeWZ 3LJTtcJfW7ua+Rudi7PZpBSUmF5KpeeQXshTabkJiNFNWGDtDaGB4YALHwYbF7cEuy3Ob7JDPnIQu wT/DtFWA==; Received: from hch by bombadil.infradead.org with local (Exim 4.94.2 #2 (Red Hat Linux)) id 1nh2Ts-007MLW-TQ; Wed, 20 Apr 2022 05:02:20 +0000 Date: Tue, 19 Apr 2022 22:02:20 -0700 From: Christoph Hellwig To: Kent Overstreet Cc: linux-kernel@vger.kernel.org, linux-mm@kvack.org, linux-fsdevel@vger.kernel.org, roman.gushchin@linux.dev, hannes@cmpxchg.org Subject: Re: [PATCH 1/4] lib/printbuf: New data structure for heap-allocated strings Message-ID: References: <20220419203202.2670193-1-kent.overstreet@gmail.com> <20220419203202.2670193-2-kent.overstreet@gmail.com> MIME-Version: 1.0 Content-Type: text/plain; charset=us-ascii Content-Disposition: inline In-Reply-To: <20220419203202.2670193-2-kent.overstreet@gmail.com> X-SRS-Rewrite: SMTP reverse-path rewritten from by bombadil.infradead.org. See http://www.infradead.org/rpr.html X-Rspamd-Server: rspam10 X-Rspamd-Queue-Id: 08D9F40011 X-Stat-Signature: udk14qpj6rh6ddqswj9e4yyko4my93u5 Authentication-Results: imf04.hostedemail.com; dkim=pass header.d=infradead.org header.s=bombadil.20210309 header.b=aow36qpI; spf=none (imf04.hostedemail.com: domain of BATV+4b42fcde86a6810335df+6814+infradead.org+hch@bombadil.srs.infradead.org has no SPF policy when checking 198.137.202.133) smtp.mailfrom=BATV+4b42fcde86a6810335df+6814+infradead.org+hch@bombadil.srs.infradead.org; dmarc=none X-Rspam-User: X-HE-Tag: 1650430942-830227 X-Bogosity: Ham, tests=bogofilter, spamicity=0.000727, version=1.2.4 Sender: owner-linux-mm@kvack.org Precedence: bulk X-Loop: owner-majordomo@kvack.org List-ID: On Tue, Apr 19, 2022 at 04:31:59PM -0400, Kent Overstreet wrote: > This adds printbufs: simple heap-allocated strings meant for building up > structured messages, for logging/procfs/sysfs and elsewhere. They've > been heavily used in bcachefs for writing .to_text() functions/methods - > pretty printers, which has in turn greatly improved the overall quality > of error messages. How does this use case differ from that of lib/seq_buf.c?