From mboxrd@z Thu Jan 1 00:00:00 1970 Return-Path: X-Spam-Checker-Version: SpamAssassin 3.4.0 (2014-02-07) on aws-us-west-2-korg-lkml-1.web.codeaurora.org X-Spam-Level: X-Spam-Status: No, score=-9.0 required=3.0 tests=HEADER_FROM_DIFFERENT_DOMAINS, INCLUDES_PATCH,MAILING_LIST_MULTI,SIGNED_OFF_BY,SPF_PASS,USER_AGENT_GIT autolearn=ham autolearn_force=no version=3.4.0 Received: from mail.kernel.org (mail.kernel.org [198.145.29.99]) by smtp.lore.kernel.org (Postfix) with ESMTP id CA6B8C43219 for ; Mon, 29 Apr 2019 17:27:35 +0000 (UTC) Received: from vger.kernel.org (vger.kernel.org [209.132.180.67]) by mail.kernel.org (Postfix) with ESMTP id A383C2075E for ; Mon, 29 Apr 2019 17:27:35 +0000 (UTC) Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S1728996AbfD2R1e (ORCPT ); Mon, 29 Apr 2019 13:27:34 -0400 Received: from mx2.suse.de ([195.135.220.15]:58288 "EHLO mx1.suse.de" rhost-flags-OK-OK-OK-FAIL) by vger.kernel.org with ESMTP id S1728954AbfD2R1b (ORCPT ); Mon, 29 Apr 2019 13:27:31 -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 6BA01AE29; Mon, 29 Apr 2019 17:27:30 +0000 (UTC) From: Goldwyn Rodrigues To: linux-btrfs@vger.kernel.org Cc: kilobyte@angband.pl, linux-fsdevel@vger.kernel.org, jack@suse.cz, david@fromorbit.com, willy@infradead.org, hch@lst.de, darrick.wong@oracle.com, dsterba@suse.cz, nborisov@suse.com, linux-nvdimm@lists.01.org, Goldwyn Rodrigues Subject: [PATCH 12/18] btrfs: allow MAP_SYNC mmap Date: Mon, 29 Apr 2019 12:26:43 -0500 Message-Id: <20190429172649.8288-13-rgoldwyn@suse.de> X-Mailer: git-send-email 2.16.4 In-Reply-To: <20190429172649.8288-1-rgoldwyn@suse.de> References: <20190429172649.8288-1-rgoldwyn@suse.de> Sender: linux-btrfs-owner@vger.kernel.org Precedence: bulk List-ID: X-Mailing-List: linux-btrfs@vger.kernel.org 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, -- 2.16.4