From patchwork Thu Apr 12 15:08:04 2018 Content-Type: text/plain; charset="utf-8" MIME-Version: 1.0 Content-Transfer-Encoding: 7bit X-Patchwork-Submitter: Miklos Szeredi X-Patchwork-Id: 10338825 Return-Path: Received: from mail.wl.linuxfoundation.org (pdx-wl-mail.web.codeaurora.org [172.30.200.125]) by pdx-korg-patchwork.web.codeaurora.org (Postfix) with ESMTP id A9E7B602D8 for ; Thu, 12 Apr 2018 15:23:01 +0000 (UTC) Received: from mail.wl.linuxfoundation.org (localhost [127.0.0.1]) by mail.wl.linuxfoundation.org (Postfix) with ESMTP id 9F06527DA4 for ; Thu, 12 Apr 2018 15:23:01 +0000 (UTC) Received: by mail.wl.linuxfoundation.org (Postfix, from userid 486) id 9386527E63; Thu, 12 Apr 2018 15:23:01 +0000 (UTC) X-Spam-Checker-Version: SpamAssassin 3.3.1 (2010-03-16) on pdx-wl-mail.web.codeaurora.org X-Spam-Level: X-Spam-Status: No, score=-7.9 required=2.0 tests=BAYES_00, MAILING_LIST_MULTI, RCVD_IN_DNSWL_HI autolearn=unavailable version=3.3.1 Received: from vger.kernel.org (vger.kernel.org [209.132.180.67]) by mail.wl.linuxfoundation.org (Postfix) with ESMTP id 35FD127DA4 for ; Thu, 12 Apr 2018 15:23:01 +0000 (UTC) Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S1753844AbeDLPVn (ORCPT ); Thu, 12 Apr 2018 11:21:43 -0400 Received: from mail-wm0-f65.google.com ([74.125.82.65]:35268 "EHLO mail-wm0-f65.google.com" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1753129AbeDLPIr (ORCPT ); Thu, 12 Apr 2018 11:08:47 -0400 Received: by mail-wm0-f65.google.com with SMTP id r82so10305211wme.0 for ; Thu, 12 Apr 2018 08:08:47 -0700 (PDT) X-Google-DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=1e100.net; s=20161025; h=x-gm-message-state:from:to:cc:subject:date:message-id:in-reply-to :references; bh=p+GqBhBJPkLBIFdOTVqXKQ1CFbZgTdx6ybOzCqvteCw=; b=YpnvX73OeUBslzsFXQMrDUceDtQejit+5obyM909NsR9EIg3pllb7ehKAgyCWjJ38T u5rgadvVJA5hdsKC0YU0S6IY0A8GrNMxBpoF3dQySBb3HX6K6GduYGw2/PQ4GEXfiAbY OR+Dr3G/dU9W+SFI13QR/BwAC3/k5aCwxTjdzsi8vDXmTJZcBWtcEoSBC1RI9dhbvm1B fHwboNmHyW4gGonRMSqQQ4CxO98mpDKWRumX9id9d5tgOPPPBgkzWAbDm6qQdhR39bk7 8jBi1cLusshXRBoXvaPrE7vGZEGsFmNYTc/nByixDbnwUuWsqVFvpH10YlWR0EYSRyaO I4FQ== X-Gm-Message-State: ALQs6tDGyewo+any/UCFoc+sN9qKwx2FLYXdHZWRBbk94txMQM1AKJpG k69kbURi0Qc48uCifFAQSUVVCw== X-Google-Smtp-Source: AIpwx48/ju/n3r1IgfK90U56Qwyu/urHnFRGjhQYhi5qmrcq1lJBf0eje/kdIPWdA/m/2lkBnXXStA== X-Received: by 10.28.150.71 with SMTP id y68mr1071680wmd.139.1523545726782; Thu, 12 Apr 2018 08:08:46 -0700 (PDT) Received: from veci.piliscsaba.redhat.com (catv-176-63-54-97.catv.broadband.hu. [176.63.54.97]) by smtp.gmail.com with ESMTPSA id p197sm2621783wme.43.2018.04.12.08.08.45 (version=TLS1_2 cipher=ECDHE-RSA-CHACHA20-POLY1305 bits=256/256); Thu, 12 Apr 2018 08:08:46 -0700 (PDT) From: Miklos Szeredi To: linux-unionfs@vger.kernel.org Cc: linux-fsdevel@vger.kernel.org, linux-kernel@vger.kernel.org Subject: [RFC PATCH 13/35] ovl: readd fsync Date: Thu, 12 Apr 2018 17:08:04 +0200 Message-Id: <20180412150826.20988-14-mszeredi@redhat.com> X-Mailer: git-send-email 2.14.3 In-Reply-To: <20180412150826.20988-1-mszeredi@redhat.com> References: <20180412150826.20988-1-mszeredi@redhat.com> Sender: linux-fsdevel-owner@vger.kernel.org Precedence: bulk List-ID: X-Mailing-List: linux-fsdevel@vger.kernel.org X-Virus-Scanned: ClamAV using ClamSMTP Implement stacked fsync(). Signed-off-by: Miklos Szeredi --- fs/overlayfs/file.c | 20 ++++++++++++++++++++ 1 file changed, 20 insertions(+) diff --git a/fs/overlayfs/file.c b/fs/overlayfs/file.c index b98204c1c19c..4417527667ff 100644 --- a/fs/overlayfs/file.c +++ b/fs/overlayfs/file.c @@ -222,10 +222,30 @@ static ssize_t ovl_write_iter(struct kiocb *iocb, struct iov_iter *iter) return ret; } +static int ovl_fsync(struct file *file, loff_t start, loff_t end, int datasync) +{ + struct fd real; + const struct cred *old_cred; + int ret; + + ret = ovl_real_file(file, &real); + if (ret) + return ret; + + old_cred = ovl_override_creds(file_inode(file)->i_sb); + ret = vfs_fsync_range(real.file, start, end, datasync); + revert_creds(old_cred); + + fdput(real); + + return ret; +} + const struct file_operations ovl_file_operations = { .open = ovl_open, .release = ovl_release, .llseek = ovl_llseek, .read_iter = ovl_read_iter, .write_iter = ovl_write_iter, + .fsync = ovl_fsync, };