From patchwork Wed Mar 23 11:02:49 2022 Content-Type: text/plain; charset="utf-8" MIME-Version: 1.0 Content-Transfer-Encoding: 7bit X-Patchwork-Submitter: Christian Brauner X-Patchwork-Id: 12789687 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 6B95DC433EF for ; Wed, 23 Mar 2022 11:03:10 +0000 (UTC) Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S243699AbiCWLEh (ORCPT ); Wed, 23 Mar 2022 07:04:37 -0400 Received: from lindbergh.monkeyblade.net ([23.128.96.19]:36144 "EHLO lindbergh.monkeyblade.net" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S234838AbiCWLEg (ORCPT ); Wed, 23 Mar 2022 07:04:36 -0400 Received: from dfw.source.kernel.org (dfw.source.kernel.org [139.178.84.217]) by lindbergh.monkeyblade.net (Postfix) with ESMTPS id 524BAA1AA; Wed, 23 Mar 2022 04:03:05 -0700 (PDT) Received: from smtp.kernel.org (relay.kernel.org [52.25.139.140]) (using TLSv1.2 with cipher ECDHE-RSA-AES256-GCM-SHA384 (256/256 bits)) (No client certificate requested) by dfw.source.kernel.org (Postfix) with ESMTPS id E175760EE1; Wed, 23 Mar 2022 11:03:04 +0000 (UTC) Received: by smtp.kernel.org (Postfix) with ESMTPSA id 4FA50C340E8; Wed, 23 Mar 2022 11:03:03 +0000 (UTC) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/simple; d=kernel.org; s=k20201202; t=1648033384; bh=oVbJJ9QFdFD559joI5q5oY5bEqqLMOcsKNGU0WOb/hY=; h=From:To:Cc:Subject:Date:From; b=ht3WKiXFMUjUyltHPG1endz5CGlYxo8pnysW7VKfsDj5T6L+aFrmfeEqjab6qzCz5 1unGXR8hyldmQB8rNMqt+eIvbI9aq7RTobgDyxrYX4N3cgadPKB21VBb2+6+RG23K+ ozyz8XLDrBowNo/0V9W/Pm2K35Q7Y9MuH5RPjxUAGLiNi0dWe++cotfcLBjnG1eWYe 2wyGAj7ghAHOC5VeVtB5XhvmFVBiArwl/GDIbH5gJr0yrtwH4AIh22oit6yRW8RmMx kXbX5g8QvuO1eAv8YCd4cmG0VzGBPxveH7IEdWe41e4vArkBaEy2Socnhlf8xEd5VA hwxP3KxbSjeyg== From: Christian Brauner To: Linus Torvalds Cc: linux-fsdevel@vger.kernel.org, linux-kernel@vger.kernel.org Subject: [GIT PULL] fs preempt_rt fix Date: Wed, 23 Mar 2022 12:02:49 +0100 Message-Id: <20220323110248.858156-1-brauner@kernel.org> X-Mailer: git-send-email 2.32.0 MIME-Version: 1.0 Precedence: bulk List-ID: X-Mailing-List: linux-fsdevel@vger.kernel.org Hey Linus, /* Summary */ This contains Sebastian's fix to make changing mount attributes/getting write access compatible with CONFIG_PREEMPT_RT. The change only applies when users explicitly opt-in to real-time via CONFIG_PREEMPT_RT otherwise things are exactly as before. We've waited quite a long time with this to make sure folks could take a good look. /* Testing */ All patches are based on v5.16-rc2 and have been sitting in linux-next. No build failures or warnings were observed and fstests and selftests have seen no regressions caused by this patchset. /* Conflicts */ At the time of creating this PR no merge conflicts were reported from linux-next and no merge conflicts showed up doing a test-merge with current mainline. The following changes since commit 136057256686de39cc3a07c2e39ef6bc43003ff6: Linux 5.16-rc2 (2021-11-21 13:47:39 -0800) are available in the Git repository at: git@gitolite.kernel.org:pub/scm/linux/kernel/git/brauner/linux tags/fs.rt.v5.18 for you to fetch changes up to 0f8821da48458982cf379eb4432f23958f2e3a6c: fs/namespace: Boost the mount_lock.lock owner instead of spinning on PREEMPT_RT. (2021-11-26 12:09:09 +0100) Please consider pulling these changes from the signed fs.rt.v5.18 tag. Thanks! Christian ---------------------------------------------------------------- fs.rt.v5.18 ---------------------------------------------------------------- Sebastian Andrzej Siewior (1): fs/namespace: Boost the mount_lock.lock owner instead of spinning on PREEMPT_RT. fs/namespace.c | 20 ++++++++++++++++++-- 1 file changed, 18 insertions(+), 2 deletions(-)