Return-Path: Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S1751745AbdFAQKy (ORCPT ); Thu, 1 Jun 2017 12:10:54 -0400 Received: from shadbolt.e.decadent.org.uk ([88.96.1.126]:33658 "EHLO shadbolt.e.decadent.org.uk" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1752203AbdFAPpG (ORCPT ); Thu, 1 Jun 2017 11:45:06 -0400 Content-Type: text/plain; charset="UTF-8" Content-Disposition: inline Content-Transfer-Encoding: 8bit MIME-Version: 1.0 From: Ben Hutchings To: linux-kernel@vger.kernel.org, stable@vger.kernel.org CC: akpm@linux-foundation.org, "Miklos Szeredi" Date: Thu, 01 Jun 2017 16:43:16 +0100 Message-ID: X-Mailer: LinuxStableQueue (scripts by bwh) Subject: [PATCH 3.16 148/212] fuse: add missing FR_FORCE In-Reply-To: X-SA-Exim-Connect-IP: 82.70.136.246 X-SA-Exim-Mail-From: ben@decadent.org.uk X-SA-Exim-Scanned: No (on shadbolt.decadent.org.uk); SAEximRunCond expanded to false Sender: linux-kernel-owner@vger.kernel.org List-ID: X-Mailing-List: linux-kernel@vger.kernel.org Content-Length: 1115 Lines: 35 3.16.44-rc1 review patch. If anyone has any objections, please let me know. ------------------ From: Miklos Szeredi commit 2e38bea99a80eab408adee27f873a188d57b76cb upstream. fuse_file_put() was missing the "force" flag for the RELEASE request when sending synchronously (fuseblk). If this flag is not set, then a sync request may be interrupted before it is dequeued by the userspace filesystem. In this case the OPEN won't be balanced with a RELEASE. Signed-off-by: Miklos Szeredi Fixes: 5a18ec176c93 ("fuse: fix hang of single threaded fuseblk filesystem") [bwh: Backported to 3.16: - "force" flag is a bitfield - Adjust context] Signed-off-by: Ben Hutchings --- fs/fuse/file.c | 1 + 1 file changed, 1 insertion(+) --- a/fs/fuse/file.c +++ b/fs/fuse/file.c @@ -136,6 +136,7 @@ static void fuse_file_put(struct fuse_fi path_put(&req->misc.release.path); fuse_put_request(ff->fc, req); } else if (sync) { + req->force = 1; req->background = 0; fuse_request_send(ff->fc, req); path_put(&req->misc.release.path);