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 mail.kernel.org (mail.kernel.org [198.145.29.99]) by smtp.lore.kernel.org (Postfix) with ESMTP id 2960EC433EF for ; Mon, 25 Oct 2021 09:20:50 +0000 (UTC) Received: from vger.kernel.org (vger.kernel.org [23.128.96.18]) by mail.kernel.org (Postfix) with ESMTP id F320560EE9 for ; Mon, 25 Oct 2021 09:20:49 +0000 (UTC) Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S232227AbhJYJXL (ORCPT ); Mon, 25 Oct 2021 05:23:11 -0400 Received: from lindbergh.monkeyblade.net ([23.128.96.19]:53452 "EHLO lindbergh.monkeyblade.net" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S229963AbhJYJXK (ORCPT ); Mon, 25 Oct 2021 05:23:10 -0400 Received: from galois.linutronix.de (Galois.linutronix.de [IPv6:2a0a:51c0:0:12e:550::1]) by lindbergh.monkeyblade.net (Postfix) with ESMTPS id 5D7A8C061745 for ; Mon, 25 Oct 2021 02:20:48 -0700 (PDT) Date: Mon, 25 Oct 2021 11:20:45 +0200 DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=linutronix.de; s=2020; t=1635153647; 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=TMalYUie8dVY09MQ3yMkoxPY0K+Ym8Kmq8sBXL/1LmE=; b=hDFfn6v3xn+wGLuIRVC0dHGzfax9x7MXnB0INe83HRWqjwpgge3FFM2vxRqpeGFIBlC0Db ZilNG1uXCKYRHe7aHnDZVEXPrlkyMFwbZVUGjfnfn2f+Wq1uwQ4DD2LlmwYYXVy/u2eGdS G3GgFqmXrYUEXoz4bjJC9RlXy8es6OMQUZNXE1yLJJ5B6sr1yYV7yAG0ziS3hYVg7Wu0EL ktIW7VOyl9KfYbOPrLOZZleDdDtxr5IPAkpgM+epAUZBTnaP7ANADUabk+qsiCee+fDKFM +oC5wSLVXKT7HHJKenIcTI0xTGZ5SayeaOtY7VZX6EGc1e4NuaX/Xfge7pUXWQ== DKIM-Signature: v=1; a=ed25519-sha256; c=relaxed/relaxed; d=linutronix.de; s=2020e; t=1635153647; 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=TMalYUie8dVY09MQ3yMkoxPY0K+Ym8Kmq8sBXL/1LmE=; b=ZBk0fV0ppzRNH1vkQGgLqZraF7dQQnicP6pUXNt+D83ZpKdPYdkc+S2EL+ACcTwc9R6BI8 4C5aPZAkuYSu73CQ== From: Sebastian Andrzej Siewior To: Christian Brauner Cc: linux-fsdevel@vger.kernel.org, Alexander Viro , Peter Zijlstra , John Ogness , Thomas Gleixner Subject: Re: [RFC PATCH] fs/namespace: use percpu_rw_semaphore for writer holding Message-ID: <20211025092045.rx5fe6uipzlq554d@linutronix.de> References: <20211021220102.bm5bvldjtzsabbfn@linutronix.de> <20211025091504.6k7d57awbfpqmmqs@wittgenstein> MIME-Version: 1.0 Content-Type: text/plain; charset=utf-8 Content-Disposition: inline In-Reply-To: <20211025091504.6k7d57awbfpqmmqs@wittgenstein> Precedence: bulk List-ID: X-Mailing-List: linux-fsdevel@vger.kernel.org On 2021-10-25 11:15:04 [+0200], Christian Brauner wrote: > > So the locking would be unchanged on non-rt kernels and only change on > rt kernels? Would be ok to send that patch for comparison if it's not > too much work? Yes. I will drop a patch likely today as this is the only solution I have right now (based on the brain dump). > Christian Sebastian