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=-6.9 required=3.0 tests=HEADER_FROM_DIFFERENT_DOMAINS, INCLUDES_PATCH,MAILING_LIST_MULTI,SIGNED_OFF_BY,SPF_PASS 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 8EFB0C5CFFE for ; Mon, 10 Dec 2018 17:19:22 +0000 (UTC) Received: from vger.kernel.org (vger.kernel.org [209.132.180.67]) by mail.kernel.org (Postfix) with ESMTP id 5E46B2082F for ; Mon, 10 Dec 2018 17:19:22 +0000 (UTC) DMARC-Filter: OpenDMARC Filter v1.3.2 mail.kernel.org 5E46B2082F 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-kernel-owner@vger.kernel.org Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S1728648AbeLJRTU (ORCPT ); Mon, 10 Dec 2018 12:19:20 -0500 Received: from mx1.redhat.com ([209.132.183.28]:59292 "EHLO mx1.redhat.com" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1728384AbeLJRNf (ORCPT ); Mon, 10 Dec 2018 12:13:35 -0500 Received: from smtp.corp.redhat.com (int-mx01.intmail.prod.int.phx2.redhat.com [10.5.11.11]) (using TLSv1.2 with cipher AECDH-AES256-SHA (256/256 bits)) (No client certificate requested) by mx1.redhat.com (Postfix) with ESMTPS id 5217C2BEAE; Mon, 10 Dec 2018 17:13:35 +0000 (UTC) Received: from horse.redhat.com (unknown [10.18.25.234]) by smtp.corp.redhat.com (Postfix) with ESMTP id 04CFE600D6; Mon, 10 Dec 2018 17:13:34 +0000 (UTC) Received: by horse.redhat.com (Postfix, from userid 10451) id 814A722426A; Mon, 10 Dec 2018 12:13:30 -0500 (EST) From: Vivek Goyal To: linux-fsdevel@vger.kernel.org, linux-kernel@vger.kernel.org, kvm@vger.kernel.org Cc: vgoyal@redhat.com, miklos@szeredi.hu, stefanha@redhat.com, dgilbert@redhat.com, sweil@redhat.com, swhiteho@redhat.com Subject: [PATCH 31/52] dax: Pass dax_dev to dax_writeback_mapping_range() Date: Mon, 10 Dec 2018 12:12:57 -0500 Message-Id: <20181210171318.16998-32-vgoyal@redhat.com> In-Reply-To: <20181210171318.16998-1-vgoyal@redhat.com> References: <20181210171318.16998-1-vgoyal@redhat.com> X-Scanned-By: MIMEDefang 2.79 on 10.5.11.11 X-Greylist: Sender IP whitelisted, not delayed by milter-greylist-4.5.16 (mx1.redhat.com [10.5.110.39]); Mon, 10 Dec 2018 17:13:35 +0000 (UTC) Sender: linux-kernel-owner@vger.kernel.org Precedence: bulk List-ID: X-Mailing-List: linux-kernel@vger.kernel.org Right now dax_writeback_mapping_range() is passed a bdev and dax_dev is searched from that bdev name. virtio-fs does not have a bdev. So pass in dax_dev also to dax_writeback_mapping_range(). If dax_dev is passed in, bdev is not used otherwise dax_dev is searched using bdev. Signed-off-by: Vivek Goyal --- fs/dax.c | 16 ++++++++++------ fs/ext4/inode.c | 2 +- fs/xfs/xfs_aops.c | 2 +- include/linux/dax.h | 6 ++++-- 4 files changed, 16 insertions(+), 10 deletions(-) diff --git a/fs/dax.c b/fs/dax.c index 6431c3aba182..1ae3a60c17d4 100644 --- a/fs/dax.c +++ b/fs/dax.c @@ -911,12 +911,12 @@ static int dax_writeback_one(struct xa_state *xas, struct dax_device *dax_dev, * on persistent storage prior to completion of the operation. */ int dax_writeback_mapping_range(struct address_space *mapping, - struct block_device *bdev, struct writeback_control *wbc) + struct block_device *bdev, struct dax_device *dax_dev, + struct writeback_control *wbc) { XA_STATE(xas, &mapping->i_pages, wbc->range_start >> PAGE_SHIFT); struct inode *inode = mapping->host; pgoff_t end_index = wbc->range_end >> PAGE_SHIFT; - struct dax_device *dax_dev; void *entry; int ret = 0; unsigned int scanned = 0; @@ -927,9 +927,12 @@ int dax_writeback_mapping_range(struct address_space *mapping, if (!mapping->nrexceptional || wbc->sync_mode != WB_SYNC_ALL) return 0; - dax_dev = dax_get_by_host(bdev->bd_disk->disk_name); - if (!dax_dev) - return -EIO; + if (bdev) { + WARN_ON(dax_dev); + dax_dev = dax_get_by_host(bdev->bd_disk->disk_name); + if (!dax_dev) + return -EIO; + } trace_dax_writeback_range(inode, xas.xa_index, end_index); @@ -951,7 +954,8 @@ int dax_writeback_mapping_range(struct address_space *mapping, xas_lock_irq(&xas); } xas_unlock_irq(&xas); - put_dax(dax_dev); + if (bdev) + put_dax(dax_dev); trace_dax_writeback_range_done(inode, xas.xa_index, end_index); return ret; } diff --git a/fs/ext4/inode.c b/fs/ext4/inode.c index 22a9d8159720..3569c260a3bd 100644 --- a/fs/ext4/inode.c +++ b/fs/ext4/inode.c @@ -2978,7 +2978,7 @@ static int ext4_dax_writepages(struct address_space *mapping, percpu_down_read(&sbi->s_journal_flag_rwsem); trace_ext4_writepages(inode, wbc); - ret = dax_writeback_mapping_range(mapping, inode->i_sb->s_bdev, wbc); + ret = dax_writeback_mapping_range(mapping, inode->i_sb->s_bdev, NULL, wbc); trace_ext4_writepages_result(inode, wbc, ret, nr_to_write - wbc->nr_to_write); percpu_up_read(&sbi->s_journal_flag_rwsem); diff --git a/fs/xfs/xfs_aops.c b/fs/xfs/xfs_aops.c index 338b9d9984e0..b1947beec50a 100644 --- a/fs/xfs/xfs_aops.c +++ b/fs/xfs/xfs_aops.c @@ -951,7 +951,7 @@ xfs_dax_writepages( { xfs_iflags_clear(XFS_I(mapping->host), XFS_ITRUNCATED); return dax_writeback_mapping_range(mapping, - xfs_find_bdev_for_inode(mapping->host), wbc); + xfs_find_bdev_for_inode(mapping->host), NULL, wbc); } STATIC int diff --git a/include/linux/dax.h b/include/linux/dax.h index 450b28db9533..a8461841f148 100644 --- a/include/linux/dax.h +++ b/include/linux/dax.h @@ -85,7 +85,8 @@ static inline void fs_put_dax(struct dax_device *dax_dev) struct dax_device *fs_dax_get_by_bdev(struct block_device *bdev); int dax_writeback_mapping_range(struct address_space *mapping, - struct block_device *bdev, struct writeback_control *wbc); + struct block_device *bdev, struct dax_device *dax_dev, + struct writeback_control *wbc); struct page *dax_layout_busy_page(struct address_space *mapping); bool dax_lock_mapping_entry(struct page *page); @@ -117,7 +118,8 @@ static inline struct page *dax_layout_busy_page(struct address_space *mapping) } static inline int dax_writeback_mapping_range(struct address_space *mapping, - struct block_device *bdev, struct writeback_control *wbc) + struct block_device *bdev, struct dax_device *dax_dev, + struct writeback_control *wbc) { return -EOPNOTSUPP; } -- 2.13.6