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 971B1C6FD1C for ; Thu, 23 Mar 2023 22:03:33 +0000 (UTC) Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S229997AbjCWWDc (ORCPT ); Thu, 23 Mar 2023 18:03:32 -0400 Received: from lindbergh.monkeyblade.net ([23.128.96.19]:53762 "EHLO lindbergh.monkeyblade.net" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S229600AbjCWWDa (ORCPT ); Thu, 23 Mar 2023 18:03:30 -0400 Received: from dfw.source.kernel.org (dfw.source.kernel.org [IPv6:2604:1380:4641:c500::1]) by lindbergh.monkeyblade.net (Postfix) with ESMTPS id E764D13D5B for ; Thu, 23 Mar 2023 15:03:25 -0700 (PDT) Received: from smtp.kernel.org (relay.kernel.org [52.25.139.140]) (using TLSv1.2 with cipher ECDHE-RSA-AES256-GCM-SHA384 (256/256 bits)) (No client certificate requested) by dfw.source.kernel.org (Postfix) with ESMTPS id 64D75628DA for ; Thu, 23 Mar 2023 22:03:25 +0000 (UTC) Received: by smtp.kernel.org (Postfix) with ESMTPSA id A2FFCC433D2; Thu, 23 Mar 2023 22:03:24 +0000 (UTC) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/simple; d=kernel.org; s=k20201202; t=1679609004; bh=goJ4V9EA3h8tpdyLAJRYYFW4knwa/WVSAHQH3lMkgl0=; h=Date:From:To:Cc:Subject:References:In-Reply-To:From; b=dM6si4v4OoCcVcoOqAx/sf+oiBJriayq0sO2xzovDAAhA1uieRCpJ+hibfqxQNPit DZtNG4r/J+2QxBE1ZIQ4OAjC7j5fhaG4ID3GnLxWx3DR65KEmU0lUFhgfxwDJvbJ2W pQrl1k76LI5lcX+vizatOsawtmeOmSRuVzo6Q/hicdheeL0KC8ezRo/Gc7uwMO3yUG +Sck6h5dkveSi4cRMIwiFghdXLAYGGdOpKODWyDnRvOObjp55HQOnv4mL+7R05QlDP u0tojVrN1a2weuQCrJfgKUVePaBtlbujBovq+/+cNPRKK0A9oSWoLtfHegcVFxrmUB J7Uj6scixKeAg== Date: Thu, 23 Mar 2023 15:03:22 -0700 From: Jaegeuk Kim To: Chao Yu Cc: yonggil.song@samsung.com, "linux-f2fs-devel@lists.sourceforge.net" , "linux-kernel@vger.kernel.org" Subject: Re: [PATCH v1] f2fs: Fix discard bug on zoned block devices with 2MiB zone size Message-ID: References: <20230313094825epcms2p71e6cb549251dc55e8d202dd64b9913a6@epcms2p7> MIME-Version: 1.0 Content-Type: text/plain; charset=us-ascii Content-Disposition: inline In-Reply-To: Precedence: bulk List-ID: X-Mailing-List: linux-kernel@vger.kernel.org On 03/23, Chao Yu wrote: > On 2023/3/13 17:48, Yonggil Song wrote: > > When using f2fs on a zoned block device with 2MiB zone size, IO errors > > occurs because f2fs tries to write data to a zone that has not been reset. > > > > The cause is that f2fs tries to discard multiple zones at once. This is > > caused by a condition in f2fs_clear_prefree_segments that does not check > > for zoned block devices when setting the discard range. This leads to > > invalid reset commands and write pointer mismatches. > > > > This patch fixes the zoned block device with 2MiB zone size to reset one > > zone at a time. > > > > Signed-off-by: Yonggil Song > > --- > > fs/f2fs/segment.c | 3 ++- > > 1 file changed, 2 insertions(+), 1 deletion(-) > > > > diff --git a/fs/f2fs/segment.c b/fs/f2fs/segment.c > > index acf3d3fa4363..2b6cb6df623b 100644 > > --- a/fs/f2fs/segment.c > > +++ b/fs/f2fs/segment.c > > @@ -1953,7 +1953,8 @@ void f2fs_clear_prefree_segments(struct f2fs_sb_info *sbi, > > (end - 1) <= cpc->trim_end) > > continue; > > - if (!f2fs_lfs_mode(sbi) || !__is_large_section(sbi)) { > > + if (!f2fs_sb_has_blkzoned(sbi) && > > Could you please add one line comment here for this change? This was merged in -dev a while ago. I don't think this would be critical to rebase it again. > > Otherwise it looks good to me. > > Thanks, > > > + (!f2fs_lfs_mode(sbi) || !__is_large_section(sbi))) { > > f2fs_issue_discard(sbi, START_BLOCK(sbi, start), > > (end - start) << sbi->log_blocks_per_seg); > > continue;