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=-3.5 required=3.0 tests=BAYES_00,DKIM_INVALID, DKIM_SIGNED,HEADER_FROM_DIFFERENT_DOMAINS,MAILING_LIST_MULTI,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 D4EC2C4320E for ; Wed, 18 Aug 2021 15:03:44 +0000 (UTC) Received: from vger.kernel.org (vger.kernel.org [23.128.96.18]) by mail.kernel.org (Postfix) with ESMTP id AE0746108D for ; Wed, 18 Aug 2021 15:03:44 +0000 (UTC) Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S239810AbhHRPES (ORCPT ); Wed, 18 Aug 2021 11:04:18 -0400 Received: from lindbergh.monkeyblade.net ([23.128.96.19]:58462 "EHLO lindbergh.monkeyblade.net" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S239766AbhHRPEO (ORCPT ); Wed, 18 Aug 2021 11:04:14 -0400 Received: from mail-ua1-x92d.google.com (mail-ua1-x92d.google.com [IPv6:2607:f8b0:4864:20::92d]) by lindbergh.monkeyblade.net (Postfix) with ESMTPS id 70F4CC061764 for ; Wed, 18 Aug 2021 08:03:39 -0700 (PDT) Received: by mail-ua1-x92d.google.com with SMTP id b7so1106399uav.11 for ; Wed, 18 Aug 2021 08:03:39 -0700 (PDT) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=szeredi.hu; s=google; h=mime-version:references:in-reply-to:from:date:message-id:subject:to :cc; bh=6OCLZQBwVcpLwcY/DKCJmIdalTErEPwaknULWqkTgYU=; b=XFzYhjc12V3mkhM5uroFJxJTQx2njr5xJq4zJ0RaA83UeTJZTMx7hxBZFCPybq/C7s eCClrNbsgsgbxrW9WBrUg/y/n8AUyzHDgjnxdpFtPrtIu9b2WP0aOryWMumLrOjaKFVL pXkg/VmXgIvbmuyfEFvedk07te9ttq7YgUUR8= 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=6OCLZQBwVcpLwcY/DKCJmIdalTErEPwaknULWqkTgYU=; b=OhdLM3bIuKvat91r4N5lHDRRyJ6XITdKuDugYxz9uz07pKQOkX/B5b5SSx00wiIhFV EyvF7WY50AWAXNKgIatrl/gPA6WR87x/DAAZwyU09tClGcWI1zDRwTlqZeh8I8lXjouD tHGHsKo/ONBzeFnrBU8fCB7H9mt7nINfsVpk4u32aWbii69UUa/zkn5CfxL09dfAqRUM i92xN1UPM3yMP7aN6SatnrQl1+U1eaCvoGtTXC4Zdp0SlEnRkKYunSfZwWsswc0PLGVA lAKTvkZYe4wMI63oCUj1jhpa6u9TqZ0k1R1CB0hE44C27y3qjTsq2FXYGKY2OjEvC1Q5 O1XA== X-Gm-Message-State: AOAM532pfCxQcWQD0HC6gdonHFR0jQOCo8bP6Tlsd7XJ9+HyVPZUQJSi 0xSJ90zY5QcnVoIa2dB4EtugbHh/orc75VE5VEUt8A== X-Google-Smtp-Source: ABdhPJyDTknAMeyHz6aoQlgvyjbpcWmvkXnm1pMSL/rA6R5TLhjnybHbvy47eIc1Q6xlHDljffCdNY/dyRXZ5BoDizo= X-Received: by 2002:ab0:36ae:: with SMTP id v14mr6764417uat.8.1629299018623; Wed, 18 Aug 2021 08:03:38 -0700 (PDT) MIME-Version: 1.0 References: <20210818133400.830078-1-mszeredi@redhat.com> In-Reply-To: From: Miklos Szeredi Date: Wed, 18 Aug 2021 17:03:27 +0200 Message-ID: Subject: Re: [PATCH v2 0/2] allow overlayfs to do RCU lookups To: Al Viro Cc: Miklos Szeredi , Linus Torvalds , overlayfs , linux-fsdevel@vger.kernel.org, linux-kernel@vger.kernel.org, Andreas Gruenbacher Content-Type: text/plain; charset="UTF-8" Precedence: bulk List-ID: X-Mailing-List: linux-kernel@vger.kernel.org On Wed, 18 Aug 2021 at 16:27, Al Viro wrote: > > On Wed, Aug 18, 2021 at 03:33:58PM +0200, Miklos Szeredi wrote: > > I'd really like to fix this in some form, but not getting any response > > [1][2][3]. > > > > Al, Linus, can you please comment? > > > > I'm happy to take this through the overlayfs tree, just need an ACK for the > > VFS API change. > > Looks reasonable enough; I'm not too happy about yet another place LOOKUP_... > details get tangled into, though. Do we want it to be more than just a > bool rcu? I'd be fine with that change. Calling with false/true is less descriptive than calling with 0/LOOKUP_RCU but I guess we can leave the actual calls to use the latter? Thanks, Miklos