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 195FEC433F5 for ; Mon, 11 Apr 2022 07:59:50 +0000 (UTC) Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S1343502AbiDKIB7 (ORCPT ); Mon, 11 Apr 2022 04:01:59 -0400 Received: from lindbergh.monkeyblade.net ([23.128.96.19]:58668 "EHLO lindbergh.monkeyblade.net" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1343516AbiDKIBz (ORCPT ); Mon, 11 Apr 2022 04:01:55 -0400 Received: from us-smtp-delivery-124.mimecast.com (us-smtp-delivery-124.mimecast.com [170.10.133.124]) by lindbergh.monkeyblade.net (Postfix) with ESMTP id 98990E0F0 for ; Mon, 11 Apr 2022 00:59:39 -0700 (PDT) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=redhat.com; s=mimecast20190719; t=1649663978; h=from:from:reply-to:subject:subject:date:date:message-id:message-id: to:to:cc:cc:mime-version:mime-version:content-type:content-type: in-reply-to:in-reply-to:references:references; bh=AodznpEAcBj+PXndSY80fSw2jJRVYRPcVB2yJinGzrY=; b=azPJz1ElT5d9n7JAC5HMepVUbfNTB76qc/3XjDRuWaVFPhYRph6r2OmjVAO6HkzwZpQHnS l0Wp5ZIJpxl+wCUucTSsp7ex0YtVdrun3Uk7Ry+MKEJFrZfFlMKZpWIzXwUZpaowBOyuDn g//LTwVO64OsAgVNyxQMVlKvx9koppI= Received: from mimecast-mx02.redhat.com (mimecast-mx02.redhat.com [66.187.233.88]) by relay.mimecast.com with ESMTP with STARTTLS (version=TLSv1.2, cipher=TLS_ECDHE_RSA_WITH_AES_256_GCM_SHA384) id us-mta-226-50PXCoiLN1GrNixppGO-Tg-1; Mon, 11 Apr 2022 03:59:35 -0400 X-MC-Unique: 50PXCoiLN1GrNixppGO-Tg-1 Received: from smtp.corp.redhat.com (int-mx02.intmail.prod.int.rdu2.redhat.com [10.11.54.2]) (using TLSv1.2 with cipher AECDH-AES256-SHA (256/256 bits)) (No client certificate requested) by mimecast-mx02.redhat.com (Postfix) with ESMTPS id 9E75C85A5BC; Mon, 11 Apr 2022 07:59:34 +0000 (UTC) Received: from warthog.procyon.org.uk (unknown [10.33.37.45]) by smtp.corp.redhat.com (Postfix) with ESMTP id E1A4140EC001; Mon, 11 Apr 2022 07:59:32 +0000 (UTC) Organization: Red Hat UK Ltd. Registered Address: Red Hat UK Ltd, Amberley Place, 107-111 Peascod Street, Windsor, Berkshire, SI4 1TE, United Kingdom. Registered in England and Wales under Company Registration No. 3798903 From: David Howells In-Reply-To: References: <2582025.XdajAv7fHn@silver> <3791738.ukkqOL8KQD@silver> To: asmadeus@codewreck.org Cc: dhowells@redhat.com, Christian Schoenebeck , David Kahurani , davem@davemloft.net, ericvh@gmail.com, kuba@kernel.org, linux-kernel@vger.kernel.org, lucho@ionkov.net, netdev@vger.kernel.org, v9fs-developer@lists.sourceforge.net, Greg Kurz Subject: Re: 9p fs-cache tests/benchmark (was: 9p fscache Duplicate cookie detected) MIME-Version: 1.0 Content-Type: text/plain; charset="us-ascii" Content-ID: <1077049.1649663972.1@warthog.procyon.org.uk> Date: Mon, 11 Apr 2022 08:59:32 +0100 Message-ID: <1077050.1649663972@warthog.procyon.org.uk> X-Scanned-By: MIMEDefang 2.84 on 10.11.54.2 Precedence: bulk List-ID: X-Mailing-List: linux-kernel@vger.kernel.org asmadeus@codewreck.org wrote: > I see fscache also uses the qid version as 'auxilliary data', but I'm > not sure what this is used for -- if it's a data version like thing then > it will also at least invalidate the cache content all the time. I should really have renamed "auxiliary data" to "coherency data". It's used by direct comparison when fscache binds a cookie to a backing cache object to work out if the content of the backing object is still valid. David