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 08292C43334 for ; Mon, 11 Jul 2022 20:19:48 +0000 (UTC) Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S229685AbiGKUTr (ORCPT ); Mon, 11 Jul 2022 16:19:47 -0400 Received: from lindbergh.monkeyblade.net ([23.128.96.19]:40924 "EHLO lindbergh.monkeyblade.net" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S229437AbiGKUTp (ORCPT ); Mon, 11 Jul 2022 16:19:45 -0400 Received: from casper.infradead.org (casper.infradead.org [IPv6:2001:8b0:10b:1236::1]) by lindbergh.monkeyblade.net (Postfix) with ESMTPS id 762362613F; Mon, 11 Jul 2022 13:19:44 -0700 (PDT) DKIM-Signature: v=1; a=rsa-sha256; q=dns/txt; c=relaxed/relaxed; d=infradead.org; s=casper.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; bh=HYs1LyaRC73VT38dPjTKJTKkmS+W1iX1bYSWkOKlJWs=; b=tWts7IXr30sZVi/WrY56iafBXu YKGs3dRZ4TNQL5qhs+2GhmS2i7HFIcQn2DwHIKQoXDxKbBkbfakZAVxK4/hGZyRKnPKHMHrO9Dhly IkKkETZI1LWw7YtYZ6tO/y4I/SwVvTrKACIbCYvXSm7vCBxrx5wbWwjmbfCFYmV4itIEfGzoHCm9n d4NRobvHjDrTmgqoZi6Ouk5zrk34TzAWnxqERp0E620prEZUkak4Fi0y2WHcv/cEO8pAeBcoKIX+T yTr92nvcOXLz2KhA+5AlDnzQXfn86bQiNfP0qCUr3py25ITJzLm9Icr5TOwJZWM5ldpzp70wExdI9 pIZbZR3A==; Received: from willy by casper.infradead.org with local (Exim 4.94.2 #2 (Red Hat Linux)) id 1oAzsc-006FqC-Ei; Mon, 11 Jul 2022 20:19:42 +0000 Date: Mon, 11 Jul 2022 21:19:42 +0100 From: Matthew Wilcox To: Brian Foster Cc: linux-fsdevel@vger.kernel.org, linux-kernel@vger.kernel.org, ikent@redhat.com, onestero@redhat.com Subject: Re: [PATCH v2 0/4] proc: improve root readdir latency with many threads Message-ID: References: <20220711135237.173667-1-bfoster@redhat.com> MIME-Version: 1.0 Content-Type: text/plain; charset=us-ascii Content-Disposition: inline In-Reply-To: <20220711135237.173667-1-bfoster@redhat.com> Precedence: bulk List-ID: X-Mailing-List: linux-fsdevel@vger.kernel.org On Mon, Jul 11, 2022 at 09:52:33AM -0400, Brian Foster wrote: > Hi all, > > Here's v2 of the /proc readdir optimization patches. See v1 for the full > introductary cover letter. I really don't want to change the radix tree or IDR code. That's why I did the conversion of the pid code to use the XArray for you. > The refactoring in v2 adds a bit more to the idr code, but it remains > trivial with respect to eventual xarray (tag -> mark) conversion. On > that topic, I'm still looking for some feedback in the v1 thread [1] on > the prospective approach... Oh, I missed the last few emails in that thread due to being on holiday. I'll go back and read/reply to them now.