From patchwork Tue Apr 16 16:41:48 2019 Content-Type: text/plain; charset="utf-8" MIME-Version: 1.0 Content-Transfer-Encoding: 7bit X-Patchwork-Submitter: Goldwyn Rodrigues X-Patchwork-Id: 10903505 Return-Path: Received: from mail.wl.linuxfoundation.org (pdx-wl-mail.web.codeaurora.org [172.30.200.125]) by pdx-korg-patchwork-2.web.codeaurora.org (Postfix) with ESMTP id 28A761850 for ; Tue, 16 Apr 2019 16:42:38 +0000 (UTC) Received: from mail.wl.linuxfoundation.org (localhost [127.0.0.1]) by mail.wl.linuxfoundation.org (Postfix) with ESMTP id 15AA6289B2 for ; Tue, 16 Apr 2019 16:42:38 +0000 (UTC) Received: by mail.wl.linuxfoundation.org (Postfix, from userid 486) id 09D0A289A6; Tue, 16 Apr 2019 16:42:38 +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 344F9289A6 for ; Tue, 16 Apr 2019 16:42:36 +0000 (UTC) Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S1730073AbfDPQmf (ORCPT ); Tue, 16 Apr 2019 12:42:35 -0400 Received: from mx2.suse.de ([195.135.220.15]:36444 "EHLO mx1.suse.de" rhost-flags-OK-OK-OK-FAIL) by vger.kernel.org with ESMTP id S1729237AbfDPQmd (ORCPT ); Tue, 16 Apr 2019 12:42:33 -0400 X-Virus-Scanned: by amavisd-new at test-mx.suse.de Received: from relay2.suse.de (unknown [195.135.220.254]) by mx1.suse.de (Postfix) with ESMTP id 8A497B0DA; Tue, 16 Apr 2019 16:42:32 +0000 (UTC) From: Goldwyn Rodrigues To: linux-btrfs@vger.kernel.org Cc: linux-fsdevel@vger.kernel.org, jack@suse.cz, david@fromorbit.com, willy@infradead.org, hch@lst.de, darrick.wong@oracle.com, kilobyte@angband.pl, dsterba@suse.cz, nborisov@suse.com, linux-nvdimm@lists.01.org, Goldwyn Rodrigues Subject: [PATCH 12/18] btrfs: allow MAP_SYNC mmap Date: Tue, 16 Apr 2019 11:41:48 -0500 Message-Id: <20190416164154.30390-13-rgoldwyn@suse.de> X-Mailer: git-send-email 2.16.4 In-Reply-To: <20190416164154.30390-1-rgoldwyn@suse.de> References: <20190416164154.30390-1-rgoldwyn@suse.de> Sender: linux-btrfs-owner@vger.kernel.org Precedence: bulk List-ID: X-Mailing-List: linux-btrfs@vger.kernel.org X-Virus-Scanned: ClamAV using ClamSMTP From: Adam Borowski Used by userspace to detect DAX. [rgoldwyn@suse.com: Added CONFIG_FS_DAX around mmap_supported_flags] Signed-off-by: Adam Borowski Signed-off-by: Goldwyn Rodrigues --- fs/btrfs/file.c | 4 ++++ 1 file changed, 4 insertions(+) diff --git a/fs/btrfs/file.c b/fs/btrfs/file.c index 9d5a3c99a6b9..362a9cf9dcb2 100644 --- a/fs/btrfs/file.c +++ b/fs/btrfs/file.c @@ -16,6 +16,7 @@ #include #include #include +#include #include "ctree.h" #include "disk-io.h" #include "transaction.h" @@ -3319,6 +3320,9 @@ const struct file_operations btrfs_file_operations = { .splice_read = generic_file_splice_read, .write_iter = btrfs_file_write_iter, .mmap = btrfs_file_mmap, +#ifdef CONFIG_FS_DAX + .mmap_supported_flags = MAP_SYNC, +#endif .open = btrfs_file_open, .release = btrfs_release_file, .fsync = btrfs_sync_file,