Return-Path: Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S938056AbdLRSUE (ORCPT ); Mon, 18 Dec 2017 13:20:04 -0500 Received: from mail.linuxfoundation.org ([140.211.169.12]:33252 "EHLO mail.linuxfoundation.org" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S933222AbdLRPvc (ORCPT ); Mon, 18 Dec 2017 10:51:32 -0500 From: Greg Kroah-Hartman To: linux-kernel@vger.kernel.org Cc: Greg Kroah-Hartman , stable@vger.kernel.org, Marc Dionne , David Howells , Sasha Levin Subject: [PATCH 3.18 29/69] afs: Flush outstanding writes when an fd is closed Date: Mon, 18 Dec 2017 16:48:15 +0100 Message-Id: <20171218152741.376392990@linuxfoundation.org> X-Mailer: git-send-email 2.15.1 In-Reply-To: <20171218152735.055508271@linuxfoundation.org> References: <20171218152735.055508271@linuxfoundation.org> User-Agent: quilt/0.65 MIME-Version: 1.0 Content-Type: text/plain; charset=UTF-8 Sender: linux-kernel-owner@vger.kernel.org List-ID: X-Mailing-List: linux-kernel@vger.kernel.org Content-Length: 1840 Lines: 66 3.18-stable review patch. If anyone has any objections, please let me know. ------------------ From: David Howells [ Upstream commit 58fed94dfb17e89556b5705f20f90e5b2971b6a1 ] Flush outstanding writes in afs when an fd is closed. This is what NFS and CIFS do. Reported-by: Marc Dionne Signed-off-by: David Howells Signed-off-by: Sasha Levin Signed-off-by: Greg Kroah-Hartman --- fs/afs/file.c | 1 + fs/afs/internal.h | 1 + fs/afs/write.c | 14 ++++++++++++++ 3 files changed, 16 insertions(+) --- a/fs/afs/file.c +++ b/fs/afs/file.c @@ -29,6 +29,7 @@ static int afs_readpages(struct file *fi const struct file_operations afs_file_operations = { .open = afs_open, + .flush = afs_flush, .release = afs_release, .llseek = generic_file_llseek, .read = new_sync_read, --- a/fs/afs/internal.h +++ b/fs/afs/internal.h @@ -749,6 +749,7 @@ extern int afs_writepages(struct address extern void afs_pages_written_back(struct afs_vnode *, struct afs_call *); extern ssize_t afs_file_write(struct kiocb *, struct iov_iter *); extern int afs_writeback_all(struct afs_vnode *); +extern int afs_flush(struct file *, fl_owner_t); extern int afs_fsync(struct file *, loff_t, loff_t, int); --- a/fs/afs/write.c +++ b/fs/afs/write.c @@ -743,6 +743,20 @@ out: } /* + * Flush out all outstanding writes on a file opened for writing when it is + * closed. + */ +int afs_flush(struct file *file, fl_owner_t id) +{ + _enter(""); + + if ((file->f_mode & FMODE_WRITE) == 0) + return 0; + + return vfs_fsync(file, 0); +} + +/* * notification that a previously read-only page is about to become writable * - if it returns an error, the caller will deliver a bus error signal */