Received: by 2002:a05:6a10:206:0:0:0:0 with SMTP id 6csp1022497pxj; Fri, 11 Jun 2021 18:54:45 -0700 (PDT) X-Google-Smtp-Source: ABdhPJw1mAlExe0wfdDoxXXwdfdp9CvsbLvLPisGzIt3l2GXvROJv35plWurPZClNt3GYxVa4ZTi X-Received: by 2002:a17:907:3d8e:: with SMTP id he14mr6231760ejc.178.1623462885148; Fri, 11 Jun 2021 18:54:45 -0700 (PDT) ARC-Seal: i=1; a=rsa-sha256; t=1623462885; cv=none; d=google.com; s=arc-20160816; b=UmMj5460atEfFHDrOTwL5SuzxfOEIY7aKKi0TF0zWV1A0HVAx0lmQWPZZ10io2m3BK oGNHp80HnwbaM0At8swOh9Tw8l2Sq8xXO6utLSXb8vXkUcBLQA7J2XXlip1ZPA5XLFob nrHsuCnqw4ELKz/x+jAMqpsV11w55whh/N/jrK+iEvMhslCNch1P/fudlK2MwNH5ATN2 Ut/1IHGh6GQQYyw4fYQMeCEVwQUypLkYxWMqb4fGYE+/CiDex5VB/4WcIanLcKDUkIBJ 91Nk5t8pJBqhD46RoAKd3tdruPEMxrILgeX/3fePdP1E90ZIp7+bnzyb5ORNSdFJ+SRn oCOw== ARC-Message-Signature: i=1; a=rsa-sha256; c=relaxed/relaxed; d=google.com; s=arc-20160816; h=list-id:precedence:sender:in-reply-to:content-disposition :mime-version:references:message-id:subject:cc:to:from:date; bh=4yF1AqbOJe+wzlnioTPFDEfvFpE9ooX2ldOvQeHo3ds=; b=Y0k+Z2GsmpdO9bBqbbRtZiNRb3KFFPBacP8O2aIwFxIxPf3mJ1jJh0tBDiiMKdKxFU yfQfWStH4TjUXsRJQtchSEa1fdSyUkGmMpNbYQdO8C7pS4gIOFld0mV0V6hoqCy9zJXR hPiKyaojPgIfM+Jb17zTfSjkDcfnzojtGumd8rdg+8aoyTXGIE3QPovOe9oTudUvn1nD u20w7fospC9LU6RrVi4/QlLGTyz3uVVXIFGShQ/Oka7nzZBGJIKrMFSGPYIKf9PH7V+b 6q/+tlW/scjCoR/NmfXYkG5wWBQRA4u3xIniSBD29iUN8fzBXNyeWnoMOa/v4Ty8LPC7 fEUA== ARC-Authentication-Results: i=1; mx.google.com; spf=pass (google.com: domain of linux-kernel-owner@vger.kernel.org designates 23.128.96.18 as permitted sender) smtp.mailfrom=linux-kernel-owner@vger.kernel.org Return-Path: Received: from vger.kernel.org (vger.kernel.org. [23.128.96.18]) by mx.google.com with ESMTP id s26si6059460ejm.620.2021.06.11.18.54.22; Fri, 11 Jun 2021 18:54:45 -0700 (PDT) Received-SPF: pass (google.com: domain of linux-kernel-owner@vger.kernel.org designates 23.128.96.18 as permitted sender) client-ip=23.128.96.18; Authentication-Results: mx.google.com; spf=pass (google.com: domain of linux-kernel-owner@vger.kernel.org designates 23.128.96.18 as permitted sender) smtp.mailfrom=linux-kernel-owner@vger.kernel.org Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S230215AbhFLBu7 (ORCPT + 99 others); Fri, 11 Jun 2021 21:50:59 -0400 Received: from lindbergh.monkeyblade.net ([23.128.96.19]:34424 "EHLO lindbergh.monkeyblade.net" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S229942AbhFLBu6 (ORCPT ); Fri, 11 Jun 2021 21:50:58 -0400 Received: from zeniv-ca.linux.org.uk (zeniv-ca.linux.org.uk [IPv6:2607:5300:60:148a::1]) by lindbergh.monkeyblade.net (Postfix) with ESMTPS id F0256C061574; Fri, 11 Jun 2021 18:48:59 -0700 (PDT) Received: from viro by zeniv-ca.linux.org.uk with local (Exim 4.94.2 #2 (Red Hat Linux)) id 1lrslS-007A6z-H0; Sat, 12 Jun 2021 01:48:46 +0000 Date: Sat, 12 Jun 2021 01:48:46 +0000 From: Al Viro To: Ian Kent Cc: Miklos Szeredi , Greg Kroah-Hartman , Tejun Heo , Eric Sandeen , Fox Chen , Brice Goglin , Rick Lindsley , David Howells , Marcelo Tosatti , "Eric W. Biederman" , Carlos Maiolino , linux-fsdevel , Kernel Mailing List Subject: Re: [PATCH v6 3/7] kernfs: use VFS negative dentry caching Message-ID: References: <162322846765.361452.17051755721944717990.stgit@web.messagingengine.com> <162322862726.361452.10114120072438540655.stgit@web.messagingengine.com> MIME-Version: 1.0 Content-Type: text/plain; charset=us-ascii Content-Disposition: inline In-Reply-To: Sender: Al Viro Precedence: bulk List-ID: X-Mailing-List: linux-kernel@vger.kernel.org On Sat, Jun 12, 2021 at 08:47:17AM +0800, Ian Kent wrote: > > Perhaps add a note about this being dependent on parent of a negative > > dentry never changing. > > Which of course it it can change, at any time. What?