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=-3.6 required=3.0 tests=DKIM_INVALID,DKIM_SIGNED, HEADER_FROM_DIFFERENT_DOMAINS,MAILING_LIST_MULTI,SIGNED_OFF_BY,SPF_HELO_NONE, SPF_PASS,URIBL_BLOCKED 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 5DBA5C35E01 for ; Tue, 25 Feb 2020 18:46:53 +0000 (UTC) Received: from vger.kernel.org (vger.kernel.org [209.132.180.67]) by mail.kernel.org (Postfix) with ESMTP id 3290D2176D for ; Tue, 25 Feb 2020 18:46:53 +0000 (UTC) Authentication-Results: mail.kernel.org; dkim=fail reason="signature verification failed" (2048-bit key) header.d=infradead.org header.i=@infradead.org header.b="dtDT2pB1" Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S1731502AbgBYSqw (ORCPT ); Tue, 25 Feb 2020 13:46:52 -0500 Received: from bombadil.infradead.org ([198.137.202.133]:34544 "EHLO bombadil.infradead.org" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1728753AbgBYSqw (ORCPT ); Tue, 25 Feb 2020 13:46:52 -0500 DKIM-Signature: v=1; a=rsa-sha256; q=dns/txt; c=relaxed/relaxed; d=infradead.org; s=bombadil.20170209; 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=GvmGO76mHTrzL1w+Y4jFsUFACYmWZn3iPlI8Biol/Nk=; b=dtDT2pB1HjezVha9VVjvW5J45K dMlkw3a2L6TE2HlVWj5Feo/Kye/566JOln3uOqWfbK0mUYvzkU5z/IPBsS+/g39e4V0MzbZaK+e5X sqhBBu2uhPHWraPPfF2/0wXIpWyncGm0SWgRzDbcejUguA/CrwOVPWumxAQITuPl/iui2rO1lBmX5 esKu8PLJgJ0bT+u21nH9Ly/EHG2tmoOtnR+WHbRvKzt8svfu8CgYQbkbusFlL3PVCMwDivA5AQiT7 s9g5QKWVPgksj2OSJusMrb54ooGumV2EYoKdiGDZy5yTNQYP3ZMjhLn98mYl9LwYaQ4iQffIBmx7s ZWndFRlg==; Received: from hch by bombadil.infradead.org with local (Exim 4.92.3 #3 (Red Hat Linux)) id 1j6fEK-0006Ym-2O; Tue, 25 Feb 2020 18:46:52 +0000 Date: Tue, 25 Feb 2020 10:46:52 -0800 From: Christoph Hellwig To: Eric Sandeen Cc: linux-xfs Subject: Re: [PATCH V4] libxfs: use FALLOC_FL_ZERO_RANGE in libxfs_device_zero Message-ID: <20200225184652.GA24401@infradead.org> References: <4bc3be27-b09d-a708-f053-6f7240642667@sandeen.net> <1c7c39f7-91a7-be85-5906-e55180a91a5f@sandeen.net> MIME-Version: 1.0 Content-Type: text/plain; charset=us-ascii Content-Disposition: inline In-Reply-To: <1c7c39f7-91a7-be85-5906-e55180a91a5f@sandeen.net> X-SRS-Rewrite: SMTP reverse-path rewritten from by bombadil.infradead.org. See http://www.infradead.org/rpr.html Sender: linux-xfs-owner@vger.kernel.org Precedence: bulk List-ID: X-Mailing-List: linux-xfs@vger.kernel.org On Tue, Feb 25, 2020 at 10:13:55AM -0800, Eric Sandeen wrote: > I had a request from someone who cared about mkfs speed over > a slower network block device to look into using faster zeroing > methods, particularly for the log, during mkfs. > > Using FALLOC_FL_ZERO_RANGE is faster in this case than writing > a bunch of zeros across a wire. > > Signed-off-by: Eric Sandeen Looks good: Reviewed-by: Christoph Hellwig