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 X-Spam-Level: X-Spam-Status: No, score=-4.1 required=3.0 tests=DKIMWL_WL_HIGH,DKIM_SIGNED, DKIM_VALID,DKIM_VALID_AU,MAILING_LIST_MULTI,SPF_HELO_NONE,SPF_PASS, USER_AGENT_GIT autolearn=no autolearn_force=no version=3.4.0 Received: from mail.kernel.org (mail.kernel.org [198.145.29.99]) by smtp.lore.kernel.org (Postfix) with ESMTP id 5D82DC2BB85 for ; Thu, 16 Apr 2020 11:35:02 +0000 (UTC) Received: from vger.kernel.org (vger.kernel.org [23.128.96.18]) by mail.kernel.org (Postfix) with ESMTP id 3A56E21D7F for ; Thu, 16 Apr 2020 11:35:02 +0000 (UTC) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/simple; d=kernel.org; s=default; t=1587036902; bh=TMMfR8jMQehfnp/7rpYl0nN/kHBVXZuS884Eb6S1ra0=; h=From:To:Cc:Subject:Date:List-ID:From; b=vsAbtCN+ej5H8WkbHWSJwrRJCOA7+P1VMBLDjIY0VKCiTplp+5MfXRH2wUsV5jxZG Qn/Pw/fEIziE/rtzgGWCYwjKNX7UVtQVM5I26rE0gkXv379zAjQPYmhjPziag56EDQ bMXxwRGSRIbRKBPxat0MsUi0l/mcvoPWgQTtSiGs= Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S2633749AbgDPLe5 (ORCPT ); Thu, 16 Apr 2020 07:34:57 -0400 Received: from mail.kernel.org ([198.145.29.99]:35606 "EHLO mail.kernel.org" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S2506364AbgDPLez (ORCPT ); Thu, 16 Apr 2020 07:34:55 -0400 Received: from tleilax.poochiereds.net (68-20-15-154.lightspeed.rlghnc.sbcglobal.net [68.20.15.154]) (using TLSv1.2 with cipher ECDHE-RSA-AES256-GCM-SHA384 (256/256 bits)) (No client certificate requested) by mail.kernel.org (Postfix) with ESMTPSA id 3897621D7F; Thu, 16 Apr 2020 11:34:54 +0000 (UTC) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/simple; d=kernel.org; s=default; t=1587036895; bh=TMMfR8jMQehfnp/7rpYl0nN/kHBVXZuS884Eb6S1ra0=; h=From:To:Cc:Subject:Date:From; b=b5ykmFcsbQ8fI1oYE/loZdT7usuZpFJH39y8yBp80iyEjSpXZaaf94MzDXvRDSVbz Y0fDUo3giLXBWWoshTb3x2ou1LV6G7CJAnLnhE8K7cLuQ3d+d8o63hqHCa+uS506j/ RwUDMDd7HGyxBlfgaMJ/LqXn9dnZE5te6iPQdHxI= From: Jeff Layton To: viro@zeniv.linux.org.uk Cc: linux-fsdevel@vger.kernel.org, linux-kernel@vger.kernel.org, linux-api@vger.kernel.org, andres@anarazel.de, willy@infradead.org, dhowells@redhat.com, hch@infradead.org, jack@suse.cz, akpm@linux-foundation.org, david@fromorbit.com Subject: [PATCH v6 0/2] vfs: have syncfs() return error when there are writeback errors Date: Thu, 16 Apr 2020 07:34:51 -0400 Message-Id: <20200416113453.227229-1-jlayton@kernel.org> X-Mailer: git-send-email 2.25.2 MIME-Version: 1.0 Content-Transfer-Encoding: 8bit Sender: linux-fsdevel-owner@vger.kernel.org Precedence: bulk List-ID: X-Mailing-List: linux-fsdevel@vger.kernel.org v6: - use READ_ONCE to ensure that compiler doesn't optimize away local var The only difference from v5 is the change to use READ_ONCE to fetch the bd_super pointer, to ensure that the compiler doesn't refetch it afterward. Many thanks to Jan K. for the explanation! Jeff Layton (2): vfs: track per-sb writeback errors and report them to syncfs buffer: record blockdev write errors in super_block that it backs drivers/dax/device.c | 1 + fs/buffer.c | 7 +++++++ fs/file_table.c | 1 + fs/open.c | 3 +-- fs/sync.c | 6 ++++-- include/linux/fs.h | 16 ++++++++++++++++ include/linux/pagemap.h | 5 ++++- 7 files changed, 34 insertions(+), 5 deletions(-) -- 2.25.2