From patchwork Tue Apr 28 13:51:53 2020 Content-Type: text/plain; charset="utf-8" MIME-Version: 1.0 Content-Transfer-Encoding: 7bit X-Patchwork-Submitter: Jeff Layton X-Patchwork-Id: 11514745 Return-Path: Received: from mail.kernel.org (pdx-korg-mail-1.web.codeaurora.org [172.30.200.123]) by pdx-korg-patchwork-2.web.codeaurora.org (Postfix) with ESMTP id 8E20714DD for ; Tue, 28 Apr 2020 13:52:11 +0000 (UTC) Received: from vger.kernel.org (vger.kernel.org [23.128.96.18]) by mail.kernel.org (Postfix) with ESMTP id 7845D206D9 for ; Tue, 28 Apr 2020 13:52:11 +0000 (UTC) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/simple; d=kernel.org; s=default; t=1588081931; bh=X2ol4rocPF2ZJBHHLlHiFYeAjC6ioYlP2NnvBhXo7o0=; h=From:To:Cc:Subject:Date:List-ID:From; b=JhAd9x4zwzPpLDOQVThlTHXLm1SdxczH5jV2Yp1uvhXD82qaY+7ZfUJELg2Q92iwE Y102Yl3hCJsZ86LpgaUaMPXxu01uiKyrAfUHVhuu2/p8iKKgOrAnfG7gW2ywZKVmyp 3/6QhKpUrsy0YE+rJvEAcGy9KLKnUptc9iomv59k= Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S1727775AbgD1Nv6 (ORCPT ); Tue, 28 Apr 2020 09:51:58 -0400 Received: from mail.kernel.org ([198.145.29.99]:40690 "EHLO mail.kernel.org" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1726949AbgD1Nv6 (ORCPT ); Tue, 28 Apr 2020 09:51:58 -0400 Received: from tleilax.com (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 71BDA206B9; Tue, 28 Apr 2020 13:51:57 +0000 (UTC) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/simple; d=kernel.org; s=default; t=1588081918; bh=X2ol4rocPF2ZJBHHLlHiFYeAjC6ioYlP2NnvBhXo7o0=; h=From:To:Cc:Subject:Date:From; b=VhOq+pLLHaMiH/1tzmZo19CBTqQgxNeUYjA1sxNGSdJRmAl6Nlx1O/Jau1FpYdsJF 5BX/NmSwvU4Yt+553IGnq+5WriTvZG+PchU1YVwpCPgRd9na9Zya+LbltarsMoBtEV OELKOWhNJjmA655Tt7ERhr2ZFjpqXV2USGrp/B4I= From: Jeff Layton To: viro@zeniv.linux.org.uk, akpm@linux-foundation.org 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, david@fromorbit.com Subject: [PATCH v6 RESEND 0/2] vfs: have syncfs() return error when there are writeback errors Date: Tue, 28 Apr 2020 09:51:53 -0400 Message-Id: <20200428135155.19223-1-jlayton@kernel.org> X-Mailer: git-send-email 2.26.1 MIME-Version: 1.0 Sender: linux-fsdevel-owner@vger.kernel.org Precedence: bulk List-ID: X-Mailing-List: linux-fsdevel@vger.kernel.org Just a resend since this hasn't been picked up yet. No real changes from the last set (other than adding Jan's Reviewed-bys). Latest cover letter follows: --------------------------8<---------------------------- 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(-)