From patchwork Wed Mar 4 16:58:41 2020 Content-Type: text/plain; charset="utf-8" MIME-Version: 1.0 Content-Transfer-Encoding: 7bit X-Patchwork-Submitter: Vivek Goyal X-Patchwork-Id: 11420451 Return-Path: Received: from mail.kernel.org (pdx-korg-mail-1.web.codeaurora.org [172.30.200.123]) by pdx-korg-patchwork-2.web.codeaurora.org (Postfix) with ESMTP id 6FA98139A for ; Wed, 4 Mar 2020 16:59:33 +0000 (UTC) Received: from ml01.01.org (ml01.01.org [198.145.21.10]) (using TLSv1.2 with cipher ECDHE-RSA-AES256-GCM-SHA384 (256/256 bits)) (No client certificate requested) by mail.kernel.org (Postfix) with ESMTPS id 4E4A124658 for ; Wed, 4 Mar 2020 16:59:33 +0000 (UTC) Authentication-Results: mail.kernel.org; dkim=fail reason="signature verification failed" (1024-bit key) header.d=redhat.com header.i=@redhat.com header.b="WGDktcE6" DMARC-Filter: OpenDMARC Filter v1.3.2 mail.kernel.org 4E4A124658 Authentication-Results: mail.kernel.org; dmarc=fail (p=none dis=none) header.from=redhat.com Authentication-Results: mail.kernel.org; spf=none smtp.mailfrom=linux-nvdimm-bounces@lists.01.org Received: from ml01.vlan13.01.org (localhost [IPv6:::1]) by ml01.01.org (Postfix) with ESMTP id 193C510FC3777; Wed, 4 Mar 2020 09:00:15 -0800 (PST) Received-SPF: Pass (mailfrom) identity=mailfrom; client-ip=207.211.31.120; helo=us-smtp-1.mimecast.com; envelope-from=vgoyal@redhat.com; receiver= Received: from us-smtp-1.mimecast.com (us-smtp-delivery-1.mimecast.com [207.211.31.120]) (using TLSv1.2 with cipher ECDHE-RSA-AES256-SHA384 (256/256 bits)) (No client certificate requested) by ml01.01.org (Postfix) with ESMTPS id 7F3CB10FC36D0 for ; Wed, 4 Mar 2020 09:00:09 -0800 (PST) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=redhat.com; s=mimecast20190719; t=1583341157; h=from:from:reply-to:subject:subject:date:date:message-id:message-id: to:to:cc:cc:mime-version:mime-version: content-transfer-encoding:content-transfer-encoding: in-reply-to:in-reply-to:references:references; bh=BDyna82gOULpd6exk200NRUKeqMshv908IMcsDkgfcs=; b=WGDktcE6ApXdD+PsZy0xtkI/tTQuPVN9UMxS1+WP0xfe0aAC4SrmpOWGd/pTun3c7dKNCW hcE8j7vraTjfjb4BrXiUBlNDlFuKr6dwLd8h1U1PCBPyePmQDtaev+LeRHvZqoG0vtXzs5 7x7LYOKyJS82saa83/rPCgfSCdcjets= Received: from mimecast-mx01.redhat.com (mimecast-mx01.redhat.com [209.132.183.4]) (Using TLS) by relay.mimecast.com with ESMTP id us-mta-469-G7_KU9XAPJmSDI_OWHjqAA-1; Wed, 04 Mar 2020 11:59:13 -0500 X-MC-Unique: G7_KU9XAPJmSDI_OWHjqAA-1 Received: from smtp.corp.redhat.com (int-mx02.intmail.prod.int.phx2.redhat.com [10.5.11.12]) (using TLSv1.2 with cipher AECDH-AES256-SHA (256/256 bits)) (No client certificate requested) by mimecast-mx01.redhat.com (Postfix) with ESMTPS id 56BBA107ACCA; Wed, 4 Mar 2020 16:59:12 +0000 (UTC) Received: from horse.redhat.com (unknown [10.18.25.35]) by smtp.corp.redhat.com (Postfix) with ESMTP id 2FA4960C84; Wed, 4 Mar 2020 16:59:12 +0000 (UTC) Received: by horse.redhat.com (Postfix, from userid 10451) id 8153F225816; Wed, 4 Mar 2020 11:59:03 -0500 (EST) From: Vivek Goyal To: linux-fsdevel@vger.kernel.org, linux-kernel@vger.kernel.org, linux-nvdimm@lists.01.org, virtio-fs@redhat.com, miklos@szeredi.hu Subject: [PATCH 16/20] fuse,virtiofs: Define dax address space operations Date: Wed, 4 Mar 2020 11:58:41 -0500 Message-Id: <20200304165845.3081-17-vgoyal@redhat.com> In-Reply-To: <20200304165845.3081-1-vgoyal@redhat.com> References: <20200304165845.3081-1-vgoyal@redhat.com> MIME-Version: 1.0 X-Scanned-By: MIMEDefang 2.79 on 10.5.11.12 Message-ID-Hash: 5IDF4YCX4AB7RNUZC3SJIMEGUR5LRHAW X-Message-ID-Hash: 5IDF4YCX4AB7RNUZC3SJIMEGUR5LRHAW X-MailFrom: vgoyal@redhat.com X-Mailman-Rule-Misses: dmarc-mitigation; no-senders; approved; emergency; loop; banned-address; member-moderation; nonmember-moderation; administrivia; implicit-dest; max-recipients; max-size; news-moderation; no-subject; suspicious-header CC: stefanha@redhat.com, dgilbert@redhat.com, mst@redhat.com X-Mailman-Version: 3.1.1 Precedence: list List-Id: "Linux-nvdimm developer list." Archived-At: List-Archive: List-Help: List-Post: List-Subscribe: List-Unsubscribe: This is done along the lines of ext4 and xfs. I primarily wanted ->writepages hook at this time so that I could call into dax_writeback_mapping_range(). This in turn will decide which pfns need to be written back. Signed-off-by: Vivek Goyal --- fs/fuse/file.c | 18 ++++++++++++++++++ 1 file changed, 18 insertions(+) diff --git a/fs/fuse/file.c b/fs/fuse/file.c index ab56396cf661..619aff6b5f44 100644 --- a/fs/fuse/file.c +++ b/fs/fuse/file.c @@ -2696,6 +2696,16 @@ static int fuse_writepages_fill(struct page *page, return err; } +static int fuse_dax_writepages(struct address_space *mapping, + struct writeback_control *wbc) +{ + + struct inode *inode = mapping->host; + struct fuse_conn *fc = get_fuse_conn(inode); + + return dax_writeback_mapping_range(mapping, fc->dax_dev, wbc); +} + static int fuse_writepages(struct address_space *mapping, struct writeback_control *wbc) { @@ -4032,6 +4042,13 @@ static const struct address_space_operations fuse_file_aops = { .write_end = fuse_write_end, }; +static const struct address_space_operations fuse_dax_file_aops = { + .writepages = fuse_dax_writepages, + .direct_IO = noop_direct_IO, + .set_page_dirty = noop_set_page_dirty, + .invalidatepage = noop_invalidatepage, +}; + void fuse_init_file_inode(struct inode *inode) { struct fuse_inode *fi = get_fuse_inode(inode); @@ -4049,5 +4066,6 @@ void fuse_init_file_inode(struct inode *inode) if (fc->dax_dev) { inode->i_flags |= S_DAX; + inode->i_data.a_ops = &fuse_dax_file_aops; } }