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=-0.9 required=3.0 tests=DKIM_SIGNED,DKIM_VALID, DKIM_VALID_AU,HEADER_FROM_DIFFERENT_DOMAINS,MAILING_LIST_MULTI,SPF_HELO_NONE, SPF_PASS,T_DKIMWL_WL_HIGH 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 1C889C31E44 for ; Wed, 12 Jun 2019 02:08:01 +0000 (UTC) Received: from vger.kernel.org (vger.kernel.org [209.132.180.67]) by mail.kernel.org (Postfix) with ESMTP id E857020866 for ; Wed, 12 Jun 2019 02:08:00 +0000 (UTC) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/simple; d=kernel.org; s=default; t=1560305281; bh=8UtWCl+qouRdxPKZ1wjZWhAx7DfmMoLDBjkFIXYvgx0=; h=References:In-Reply-To:From:Date:Subject:To:Cc:List-ID:From; b=Cg4RSApqs+MsmeNhY2go8dzQj6iHvSuHNF2r7ZzvcLNk5Emd9rIw3m33DUBoSgeG+ SI2E4upRxIGxMHT7xNxJY/kemYglFTWWEdZT7dDLA7+S4HrCAIT9F76k05aCb2Fyi8 N1WSq2FX158nCs2pFvl610odMj/P/xoQHErGVK9g= Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S2408315AbfFLCH7 (ORCPT ); Tue, 11 Jun 2019 22:07:59 -0400 Received: from mail-lj1-f178.google.com ([209.85.208.178]:35197 "EHLO mail-lj1-f178.google.com" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S2406596AbfFLCH7 (ORCPT ); Tue, 11 Jun 2019 22:07:59 -0400 Received: by mail-lj1-f178.google.com with SMTP id x25so9007256ljh.2 for ; Tue, 11 Jun 2019 19:07:57 -0700 (PDT) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=linux-foundation.org; s=google; h=mime-version:references:in-reply-to:from:date:message-id:subject:to :cc; bh=zvcuGBw+4LQao88YFmzPADNOaa+2pmIz1aMFK+ndk6M=; b=XcZ9B2oIjVRXTLHyuEPsLajuh6i76LN69nh3G8uioz1IkqIoBNiJmqBx/YkM+zyHPY 2G4ifYC/e/x616EYdSNIo03kIta8UGvL7gEmyY9zsCOwuEh0KIGgPW6cVGtYZOxKD6oY Cr+IJ89IjBKKmulpfediz94KCA9DcxQ3obwPo= X-Google-DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=1e100.net; s=20161025; h=x-gm-message-state:mime-version:references:in-reply-to:from:date :message-id:subject:to:cc; bh=zvcuGBw+4LQao88YFmzPADNOaa+2pmIz1aMFK+ndk6M=; b=MGd6ryUBl+jANQT/bRUnkp+U2nxi3U5y6jRMD/cWCQqTwlHeEDWvUICl2KtpkLporM QabZfbDdvpDFVhU/bh7ipKrnaKs5uzM6zIvMOO0lMi8CL5Iukmcxh4GXsaTLHE4GU7TZ BV6CY3xWhmVKvANZODAbFbxiRMDpovxCTy/gDOfVdsyKgbwo+v2KnMjzPVZAW37WhWSE ME1n4i6PmcQgmkEWB4vdf6YC1c8mDDHGHgzAWQUmz41gNkpO5v8zFrPlC6z/zQy6sA3a WNOgtuos7XoF7/JczN1AgIARJEK8ZDeJl3SrruFjDbBlqYvniZ8HvY7qzuyRxxhTN645 aTXA== X-Gm-Message-State: APjAAAVSjXVDkZOBm0U8phTEwyJJJx4xEoDVji7DqFKdx6YZ6CjJbYXd yZgZsRP33U+0hQmy0zFkIyPZYa7GZes= X-Google-Smtp-Source: APXvYqxxzgi636gUWTt0sX4U3Yvge1rYocP1nsSO+hGTAduUdWcBEuq3XmUdXD5hqqatOXDfW9L/Dw== X-Received: by 2002:a2e:1510:: with SMTP id s16mr13515961ljd.19.1560305277155; Tue, 11 Jun 2019 19:07:57 -0700 (PDT) Received: from mail-lj1-f180.google.com (mail-lj1-f180.google.com. [209.85.208.180]) by smtp.gmail.com with ESMTPSA id n1sm543626lfk.19.2019.06.11.19.07.56 for (version=TLS1_3 cipher=AEAD-AES128-GCM-SHA256 bits=128/128); Tue, 11 Jun 2019 19:07:56 -0700 (PDT) Received: by mail-lj1-f180.google.com with SMTP id 16so13583863ljv.10 for ; Tue, 11 Jun 2019 19:07:56 -0700 (PDT) X-Received: by 2002:a2e:9c03:: with SMTP id s3mr26468187lji.209.1560305276220; Tue, 11 Jun 2019 19:07:56 -0700 (PDT) MIME-Version: 1.0 References: <20190610191420.27007-1-kent.overstreet@gmail.com> <20190611041045.GA14363@dread.disaster.area> <20190611071038.GC14363@dread.disaster.area> In-Reply-To: <20190611071038.GC14363@dread.disaster.area> From: Linus Torvalds Date: Tue, 11 Jun 2019 16:07:40 -1000 X-Gmail-Original-Message-ID: Message-ID: Subject: Re: bcachefs status update (it's done cooking; let's get this sucker merged) To: Dave Chinner Cc: Kent Overstreet , Linux List Kernel Mailing , linux-fsdevel , linux-bcache@vger.kernel.org, Dave Chinner , "Darrick J . Wong" , Zach Brown , Peter Zijlstra , Jens Axboe , Josef Bacik , Alexander Viro , Andrew Morton , Tejun Heo Content-Type: text/plain; charset="UTF-8" Sender: linux-kernel-owner@vger.kernel.org Precedence: bulk List-ID: X-Mailing-List: linux-kernel@vger.kernel.org On Mon, Jun 10, 2019 at 9:11 PM Dave Chinner wrote: > > The same rwsem issues were seen on the mmap_sem, the shrinker rwsem, > in a couple of device drivers, and so on. i.e. This isn't an XFS > issue I'm raising here - I'm raising a concern about the lack of > validation of core infrastructure and it's suitability for > functionality extensions. I haven't actually seen the reports. That said, I do think this should be improving. The random architecture-specific code is largely going away, and we'll have a unified rwsem. It might obviously cause some pain initially, but I think long-term we should be much better off, at least avoiding the "on particular configurations" issue.. Linus