From mboxrd@z Thu Jan 1 00:00:00 1970 Return-Path: Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S1754046AbcCXB0C (ORCPT ); Wed, 23 Mar 2016 21:26:02 -0400 Received: from mga11.intel.com ([192.55.52.93]:18093 "EHLO mga11.intel.com" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1752450AbcCXB0A (ORCPT ); Wed, 23 Mar 2016 21:26:00 -0400 X-ExtLoop1: 1 X-IronPort-AV: E=Sophos;i="5.24,383,1455004800"; d="scan'208";a="674696330" Subject: [PATCH 00/13] prep for device-dax, untangle pfn-device setup From: Dan Williams To: linux-nvdimm@ml01.01.org Cc: Vishal Verma , Ross Zwisler , linux-kernel@vger.kernel.org, stable@vger.kernel.org Date: Wed, 23 Mar 2016 18:25:21 -0700 Message-ID: <20160324012520.21436.22505.stgit@dwillia2-desk3.jf.intel.com> User-Agent: StGit/0.17.1-9-g687f MIME-Version: 1.0 Content-Type: text/plain; charset="utf-8" Content-Transfer-Encoding: 7bit Sender: linux-kernel-owner@vger.kernel.org List-ID: X-Mailing-List: linux-kernel@vger.kernel.org The infrastructure for setting up a pfn-device (struct page memmap array allocation for reserved memory) is generally useful. Untangle it from the pmem driver and make it available as core libnvdimm functionality. The motivation for this work is an investigation into a standalone device-dax facility, but the changes stand on their own. Outside of exporting nvdimm_setup_pfn() as a generic facility this also includes the following benefits: 1/ fix a section alignment vs badblocks tracking bug 2/ struct pmem_device sheds 24 bytes 3/ struct blk_device is replaced with some (smaller in total) extensions to struct nd_namespace_blk. 4/ Reduce pointer chasing by retrieving driver private data from ->queuedata rather than bio->bi_bdev->bd_disk->private_data. --- Dan Williams (13): libnvdimm, pfn: fix nvdimm_namespace_add_poison() vs section alignment libnvdimm, pmem: kill pmem->ndns libnvdimm, pfn, convert nd_pfn_probe() to devm libnvdimm, btt, convert nd_btt_probe() to devm libnvdimm, blk: use devm_add_action to release bdev resources libnvdimm, blk: use ->queuedata for driver private data libnvdimm, pmem: use ->queuedata for driver private data libnvdimm, blk: move i/o infrastructure to nd_namespace_blk libnvdimm, pmem: use devm_add_action to release bdev resources libnvdimm, pmem: clean up resource print / request libnvdimm, pmem, pfn: make pmem_rw_bytes generic and refactor pfn setup libnvdimm, pmem, pfn: move pfn setup to the core libnvdimm, pmem: kill ->pmem_queue and ->pmem_disk drivers/nvdimm/blk.c | 208 ++++++++-------- drivers/nvdimm/btt.c | 20 +- drivers/nvdimm/btt_devs.c | 24 +- drivers/nvdimm/claim.c | 61 +++++ drivers/nvdimm/core.c | 41 ++- drivers/nvdimm/nd.h | 50 +++- drivers/nvdimm/pfn_devs.c | 208 +++++++++++++++- drivers/nvdimm/pmem.c | 475 +++++++++---------------------------- include/linux/nd.h | 11 + tools/testing/nvdimm/Kbuild | 1 tools/testing/nvdimm/test/iomap.c | 27 ++ 11 files changed, 579 insertions(+), 547 deletions(-)