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=-2.0 required=3.0 tests=DKIM_INVALID,DKIM_SIGNED, HEADER_FROM_DIFFERENT_DOMAINS,MAILING_LIST_MULTI,SPF_HELO_NONE,SPF_PASS, USER_AGENT_SANE_1 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 012CCC3A59E for ; Wed, 4 Sep 2019 05:06:29 +0000 (UTC) Received: from vger.kernel.org (vger.kernel.org [209.132.180.67]) by mail.kernel.org (Postfix) with ESMTP id BC78820820 for ; Wed, 4 Sep 2019 05:06:28 +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="JG5v0fxy" Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S1725267AbfIDFG2 (ORCPT ); Wed, 4 Sep 2019 01:06:28 -0400 Received: from bombadil.infradead.org ([198.137.202.133]:41388 "EHLO bombadil.infradead.org" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1725966AbfIDFG2 (ORCPT ); Wed, 4 Sep 2019 01:06:28 -0400 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:Resent-Date: Resent-From:Resent-Sender:Resent-To:Resent-Cc:Resent-Message-ID:List-Id: List-Help:List-Unsubscribe:List-Subscribe:List-Post:List-Owner:List-Archive; bh=8zBiEjRQ/qm8RPivRRpE2uecnkHuPremrH3SM4ygQfA=; b=JG5v0fxyjHRAghsibb85OSwDi D5KUJcIc6tu2/vh3EmnUZuwSlFU2ifKvTwRvKeQPD5oFwM5el+IKdBlInABFR/nTxT7aJy3OdtTsO 2xex60s0OQrok4eyxzRgbArtwY0OxKtImW9SertKke/PPJdYXNPo/w+u0w3TaRtuRahiIt2exjRzp 2yKQt8Fvm4/oZfE0OzwfNSMxIucClyCHKNfU/5dXmoRh2p1IDg/HS9Qx9bh/5DywySHFglNNXxrGV coqym1rQpj3WgaJ+HUZReCjSVsA33/hSdO2A1za8/Q1mNdGO9DLtatbZXSoCzRbjF3FXubNTJ6gXP 0n1RcMKyA==; Received: from hch by bombadil.infradead.org with local (Exim 4.92 #3 (Red Hat Linux)) id 1i5NUx-0001yH-PB; Wed, 04 Sep 2019 05:06:27 +0000 Date: Tue, 3 Sep 2019 22:06:27 -0700 From: Christoph Hellwig To: "Darrick J. Wong" Cc: Christoph Hellwig , xfs Subject: Re: [ANNOUNCE] xfs-linux: for-next updated to 1baa2800e62d Message-ID: <20190904050627.GA2569@infradead.org> References: <20190831193917.GA568270@magnolia> <20190901073311.GA13954@infradead.org> <20190903234023.GJ568270@magnolia> MIME-Version: 1.0 Content-Type: text/plain; charset=us-ascii Content-Disposition: inline In-Reply-To: <20190903234023.GJ568270@magnolia> User-Agent: Mutt/1.11.4 (2019-03-13) 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, Sep 03, 2019 at 04:40:24PM -0700, Darrick J. Wong wrote: > /me shrugs -- it's been broken for years, apparently, and we've been > arguing with almost no action for months. Developers who are building > things off of 5.3 should probably just add the patch (or turn off slub > debugging).... Well, this is a new breakage with the same old root cause. The root cause is that slub with debugging enabled gives us unaligned memory. But with my log recovery changes we may now use slub for allocations larger than a single page (before we only used it for smaller than page sizes allocations in the buffer cache), and that newly trips up in the pmem driver (and a few others). > > --D ---end quoted text---