From patchwork Sat Jan 28 08:37:19 2017 Content-Type: text/plain; charset="utf-8" MIME-Version: 1.0 Content-Transfer-Encoding: 7bit X-Patchwork-Submitter: Dan Williams X-Patchwork-Id: 9543113 Return-Path: Received: from mail.wl.linuxfoundation.org (pdx-wl-mail.web.codeaurora.org [172.30.200.125]) by pdx-korg-patchwork.web.codeaurora.org (Postfix) with ESMTP id 71EC56016C for ; Sat, 28 Jan 2017 08:42:50 +0000 (UTC) Received: from mail.wl.linuxfoundation.org (localhost [127.0.0.1]) by mail.wl.linuxfoundation.org (Postfix) with ESMTP id 65B6528249 for ; Sat, 28 Jan 2017 08:42:50 +0000 (UTC) Received: by mail.wl.linuxfoundation.org (Postfix, from userid 486) id 5AC2328304; Sat, 28 Jan 2017 08:42:50 +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=-6.9 required=2.0 tests=BAYES_00,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 02E9128249 for ; Sat, 28 Jan 2017 08:42:50 +0000 (UTC) Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S1750904AbdA1Ims (ORCPT ); Sat, 28 Jan 2017 03:42:48 -0500 Received: from mga06.intel.com ([134.134.136.31]:64074 "EHLO mga06.intel.com" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1750873AbdA1Imf (ORCPT ); Sat, 28 Jan 2017 03:42:35 -0500 Received: from orsmga002.jf.intel.com ([10.7.209.21]) by orsmga104.jf.intel.com with ESMTP; 28 Jan 2017 00:41:26 -0800 X-ExtLoop1: 1 X-IronPort-AV: E=Sophos;i="5.33,300,1477983600"; d="scan'208";a="36646502" Received: from dwillia2-desk3.jf.intel.com (HELO dwillia2-desk3.amr.corp.intel.com) ([10.54.39.14]) by orsmga002.jf.intel.com with ESMTP; 28 Jan 2017 00:41:25 -0800 Subject: [RFC PATCH 14/17] ext2, ext4, xfs: retrieve dax_inode through iomap operations From: Dan Williams To: linux-nvdimm@lists.01.org Cc: snitzer@redhat.com, toshi.kani@hpe.com, mawilcox@microsoft.com, linux-block@vger.kernel.org, jmoyer@redhat.com, linux-fsdevel@vger.kernel.org, ross.zwisler@linux.intel.com, hch@lst.de Date: Sat, 28 Jan 2017 00:37:19 -0800 Message-ID: <148559263958.11180.13062024115072920011.stgit@dwillia2-desk3.amr.corp.intel.com> In-Reply-To: <148559256378.11180.8957776806175202312.stgit@dwillia2-desk3.amr.corp.intel.com> References: <148559256378.11180.8957776806175202312.stgit@dwillia2-desk3.amr.corp.intel.com> User-Agent: StGit/0.17.1-9-g687f MIME-Version: 1.0 Sender: linux-block-owner@vger.kernel.org Precedence: bulk List-ID: X-Mailing-List: linux-block@vger.kernel.org X-Virus-Scanned: ClamAV using ClamSMTP In preparation for converting fs/dax.c to use bdev_dax_direct_access() instead of bdev_direct_access(), add the plumbing to retrieve the dax_inode determined at mount through ->iomap_begin. Signed-off-by: Dan Williams --- fs/ext2/inode.c | 1 + fs/ext4/inode.c | 1 + fs/xfs/xfs_aops.c | 13 +++++++++++++ fs/xfs/xfs_aops.h | 1 + fs/xfs/xfs_buf.h | 1 + fs/xfs/xfs_iomap.c | 1 + fs/xfs/xfs_super.c | 3 +++ include/linux/iomap.h | 1 + 8 files changed, 22 insertions(+) -- To unsubscribe from this list: send the line "unsubscribe linux-block" in the body of a message to majordomo@vger.kernel.org More majordomo info at http://vger.kernel.org/majordomo-info.html diff --git a/fs/ext2/inode.c b/fs/ext2/inode.c index f073bfca694b..c83f84748ec9 100644 --- a/fs/ext2/inode.c +++ b/fs/ext2/inode.c @@ -813,6 +813,7 @@ static int ext2_iomap_begin(struct inode *inode, loff_t offset, loff_t length, iomap->flags = 0; iomap->bdev = inode->i_sb->s_bdev; + iomap->dax_inode = inode->i_sb->s_dax; iomap->offset = (u64)first_block << blkbits; if (ret == 0) { diff --git a/fs/ext4/inode.c b/fs/ext4/inode.c index 88d57af1b516..ae6fa6a78d0d 100644 --- a/fs/ext4/inode.c +++ b/fs/ext4/inode.c @@ -3344,6 +3344,7 @@ static int ext4_iomap_begin(struct inode *inode, loff_t offset, loff_t length, iomap->flags = 0; iomap->bdev = inode->i_sb->s_bdev; + iomap->dax_inode = inode->i_sb->s_dax; iomap->offset = first_block << blkbits; if (ret == 0) { diff --git a/fs/xfs/xfs_aops.c b/fs/xfs/xfs_aops.c index 631e7c0e0a29..7d22938a4d8b 100644 --- a/fs/xfs/xfs_aops.c +++ b/fs/xfs/xfs_aops.c @@ -80,6 +80,19 @@ xfs_find_bdev_for_inode( return mp->m_ddev_targp->bt_bdev; } +struct dax_inode * +xfs_find_dax_for_inode( + struct inode *inode) +{ + struct xfs_inode *ip = XFS_I(inode); + struct xfs_mount *mp = ip->i_mount; + + if (XFS_IS_REALTIME_INODE(ip)) + return NULL; + else + return mp->m_ddev_targp->bt_dax; +} + /* * We're now finished for good with this page. Update the page state via the * associated buffer_heads, paying attention to the start and end offsets that diff --git a/fs/xfs/xfs_aops.h b/fs/xfs/xfs_aops.h index cc174ec6c2fd..e5b65f436acf 100644 --- a/fs/xfs/xfs_aops.h +++ b/fs/xfs/xfs_aops.h @@ -59,5 +59,6 @@ int xfs_setfilesize(struct xfs_inode *ip, xfs_off_t offset, size_t size); extern void xfs_count_page_state(struct page *, int *, int *); extern struct block_device *xfs_find_bdev_for_inode(struct inode *); +extern struct dax_inode *xfs_find_dax_for_inode(struct inode *); #endif /* __XFS_AOPS_H__ */ diff --git a/fs/xfs/xfs_buf.h b/fs/xfs/xfs_buf.h index 8a9d3a9599f0..1ff83f398649 100644 --- a/fs/xfs/xfs_buf.h +++ b/fs/xfs/xfs_buf.h @@ -109,6 +109,7 @@ typedef unsigned int xfs_buf_flags_t; typedef struct xfs_buftarg { dev_t bt_dev; struct block_device *bt_bdev; + struct dax_inode *bt_dax; struct backing_dev_info *bt_bdi; struct xfs_mount *bt_mount; unsigned int bt_meta_sectorsize; diff --git a/fs/xfs/xfs_iomap.c b/fs/xfs/xfs_iomap.c index 0d147428971e..1d08bd2433d5 100644 --- a/fs/xfs/xfs_iomap.c +++ b/fs/xfs/xfs_iomap.c @@ -69,6 +69,7 @@ xfs_bmbt_to_iomap( iomap->offset = XFS_FSB_TO_B(mp, imap->br_startoff); iomap->length = XFS_FSB_TO_B(mp, imap->br_blockcount); iomap->bdev = xfs_find_bdev_for_inode(VFS_I(ip)); + iomap->dax_inode = xfs_find_dax_for_inode(VFS_I(ip)); } xfs_extlen_t diff --git a/fs/xfs/xfs_super.c b/fs/xfs/xfs_super.c index eecbaac08eba..1a99013a0701 100644 --- a/fs/xfs/xfs_super.c +++ b/fs/xfs/xfs_super.c @@ -774,6 +774,9 @@ xfs_open_devices( if (!mp->m_ddev_targp) goto out_close_rtdev; + /* associate dax inode for filesystem-dax */ + mp->m_ddev_targp->bt_dax = mp->m_super->s_dax; + if (rtdev) { mp->m_rtdev_targp = xfs_alloc_buftarg(mp, rtdev); if (!mp->m_rtdev_targp) diff --git a/include/linux/iomap.h b/include/linux/iomap.h index a4c94b86401e..01e265e7cf55 100644 --- a/include/linux/iomap.h +++ b/include/linux/iomap.h @@ -41,6 +41,7 @@ struct iomap { u16 type; /* type of mapping */ u16 flags; /* flags for mapping */ struct block_device *bdev; /* block device for I/O */ + struct dax_inode *dax_inode; /* dax_inode for dax operations */ }; /*