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=-5.2 required=3.0 tests=DKIMWL_WL_HIGH,DKIM_SIGNED, DKIM_VALID,HEADER_FROM_DIFFERENT_DOMAINS,MAILING_LIST_MULTI,SIGNED_OFF_BY, SPF_HELO_NONE,SPF_PASS,URIBL_BLOCKED,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 E268DC76190 for ; Thu, 25 Jul 2019 21:04:51 +0000 (UTC) Received: from bombadil.infradead.org (bombadil.infradead.org [198.137.202.133]) (using TLSv1.2 with cipher ECDHE-RSA-AES256-GCM-SHA384 (256/256 bits)) (No client certificate requested) by mail.kernel.org (Postfix) with ESMTPS id B269E218D4 for ; Thu, 25 Jul 2019 21:04:51 +0000 (UTC) Authentication-Results: mail.kernel.org; dkim=pass (2048-bit key) header.d=lists.infradead.org header.i=@lists.infradead.org header.b="g+VQtF2f" DMARC-Filter: OpenDMARC Filter v1.3.2 mail.kernel.org B269E218D4 Authentication-Results: mail.kernel.org; dmarc=none (p=none dis=none) header.from=pengutronix.de Authentication-Results: mail.kernel.org; spf=none smtp.mailfrom=linux-mtd-bounces+linux-mtd=archiver.kernel.org@lists.infradead.org DKIM-Signature: v=1; a=rsa-sha256; q=dns/txt; c=relaxed/relaxed; d=lists.infradead.org; s=bombadil.20170209; h=Sender: Content-Transfer-Encoding:Content-Type:Cc:List-Subscribe:List-Help:List-Post: List-Archive:List-Unsubscribe:List-Id:In-Reply-To:MIME-Version:References: Message-ID:Subject:To:From:Date:Reply-To:Content-ID:Content-Description: Resent-Date:Resent-From:Resent-Sender:Resent-To:Resent-Cc:Resent-Message-ID: List-Owner; bh=isucEYLARopcRF9N8DLj7ym3b1EaIySNnV4igPkGXzI=; b=g+VQtF2fVNT+Kw cGgfIE4UZqA04lHzm9FVe69zJQhAelxugU3sTBDD74CTY5WnRb36BK9VueKTXJNKN39jjZx9+KwiV lXAy4kNaMMfUW0aPnNucE5tm7pboQ8yfsokwgoBZlz8wqgq4qXIRn7UUTHxCybSQKsqT8z5xibLrg qAHgtQNnYqaT8W9GLmDfhkqgYXSdR3/XNB+WEMXt+MfSv5TVo2YAEvBKrFv/YzuC9n8YT67o1sll6 H7VSc2KL93oX/xCkdtW1VJNgJcUe4cvmsXALgNb+rlqXr3u7oNc7yNNHc09Haq4/J+d1VAVkN9OP5 aVSFsVjWOQWsYHIzttqA==; Received: from localhost ([127.0.0.1] helo=bombadil.infradead.org) by bombadil.infradead.org with esmtp (Exim 4.92 #3 (Red Hat Linux)) id 1hqkuj-0000nW-1s; Thu, 25 Jul 2019 21:04:37 +0000 Received: from metis.ext.pengutronix.de ([2001:67c:670:201:290:27ff:fe1d:cc33]) by bombadil.infradead.org with esmtps (Exim 4.92 #3 (Red Hat Linux)) id 1hqkuf-0000mO-Eo for linux-mtd@lists.infradead.org; Thu, 25 Jul 2019 21:04:35 +0000 Received: from pty.hi.pengutronix.de ([2001:67c:670:100:1d::c5]) by metis.ext.pengutronix.de with esmtps (TLS1.2:ECDHE_RSA_AES_256_GCM_SHA384:256) (Exim 4.92) (envelope-from ) id 1hqkub-0007zK-Ke; Thu, 25 Jul 2019 23:04:29 +0200 Received: from ukl by pty.hi.pengutronix.de with local (Exim 4.89) (envelope-from ) id 1hqkub-0007e1-CJ; Thu, 25 Jul 2019 23:04:29 +0200 Date: Thu, 25 Jul 2019 23:04:29 +0200 From: Uwe =?iso-8859-1?Q?Kleine-K=F6nig?= To: Richard Weinberger Subject: Re: [PATCH] ubifs: Correctly initialize c->min_log_bytes Message-ID: <20190725210429.2aumbkpcfh4kzp2e@pengutronix.de> References: <20190725205627.31313-1-richard@nod.at> MIME-Version: 1.0 Content-Disposition: inline In-Reply-To: <20190725205627.31313-1-richard@nod.at> User-Agent: NeoMutt/20170113 (1.7.2) X-SA-Exim-Connect-IP: 2001:67c:670:100:1d::c5 X-SA-Exim-Mail-From: ukl@pengutronix.de X-SA-Exim-Scanned: No (on metis.ext.pengutronix.de); SAEximRunCond expanded to false X-PTX-Original-Recipient: linux-mtd@lists.infradead.org X-CRM114-Version: 20100106-BlameMichelson ( TRE 0.8.0 (BSD) ) MR-646709E3 X-CRM114-CacheID: sfid-20190725_140433_495747_7ECCCB98 X-CRM114-Status: GOOD ( 12.00 ) X-BeenThere: linux-mtd@lists.infradead.org X-Mailman-Version: 2.1.29 Precedence: list List-Id: Linux MTD discussion mailing list List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , Cc: linux-mtd@lists.infradead.org, kernel@pengutronix.de Content-Type: text/plain; charset="iso-8859-1" Content-Transfer-Encoding: quoted-printable Sender: "linux-mtd" Errors-To: linux-mtd-bounces+linux-mtd=archiver.kernel.org@lists.infradead.org Hello Richard, On Thu, Jul 25, 2019 at 10:56:27PM +0200, Richard Weinberger wrote: > Currently on a freshly mounted UBIFS, c->min_log_bytes is 0. > This can lead to a log overrun and make commits fail. > = > Recent kernels will report the following assert: > UBIFS assert failed: c->lhead_lnum !=3D c->ltail_lnum, in fs/ubifs/log.c:= 412 > = > c->min_log_bytes can have two states, 0 and c->leb_size. > It controls how much bytes of the log area are reserved for non-bud > nodes such as commit nodes. > = > After a commit it has to be set to c->leb_size such that we have always > enought space for a commit. While a commit runs it can be 0 to make the s/enought/enough/ > remaining bytes of the log available to writers. > = > Having it set to 0 right after mount is wrong since no space for commits > is reserved. > = > Reported-and-tested-by: Uwe Kleine-K=F6nig > Signed-off-by: Richard Weinberger Thanks for your support Uwe -- = Pengutronix e.K. | Uwe Kleine-K=F6nig | Industrial Linux Solutions | http://www.pengutronix.de/ | ______________________________________________________ Linux MTD discussion mailing list http://lists.infradead.org/mailman/listinfo/linux-mtd/