From patchwork Mon Nov 23 00:41:14 2020 Content-Type: text/plain; charset="utf-8" MIME-Version: 1.0 Content-Transfer-Encoding: 7bit X-Patchwork-Submitter: Ruan Shiyang X-Patchwork-Id: 11924117 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=-16.8 required=3.0 tests=BAYES_00, HEADER_FROM_DIFFERENT_DOMAINS,INCLUDES_CR_TRAILER,INCLUDES_PATCH, MAILING_LIST_MULTI,SPF_HELO_NONE,SPF_PASS,URIBL_BLOCKED,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 5EADEC63777 for ; Mon, 23 Nov 2020 00:41:51 +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 288192084C for ; Mon, 23 Nov 2020 00:41:50 +0000 (UTC) DMARC-Filter: OpenDMARC Filter v1.3.2 mail.kernel.org 288192084C Authentication-Results: mail.kernel.org; dmarc=none (p=none dis=none) header.from=cn.fujitsu.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 D782D100ED4A9; Sun, 22 Nov 2020 16:41:50 -0800 (PST) Received-SPF: None (mailfrom) identity=mailfrom; client-ip=183.91.158.132; helo=heian.cn.fujitsu.com; envelope-from=ruansy.fnst@cn.fujitsu.com; receiver= Received: from heian.cn.fujitsu.com (mail.cn.fujitsu.com [183.91.158.132]) by ml01.01.org (Postfix) with ESMTP id 2FE22100ED49A for ; Sun, 22 Nov 2020 16:41:48 -0800 (PST) X-IronPort-AV: E=Sophos;i="5.78,361,1599494400"; d="scan'208";a="101635245" Received: from unknown (HELO cn.fujitsu.com) ([10.167.33.5]) by heian.cn.fujitsu.com with ESMTP; 23 Nov 2020 08:41:47 +0800 Received: from G08CNEXMBPEKD04.g08.fujitsu.local (unknown [10.167.33.201]) by cn.fujitsu.com (Postfix) with ESMTP id 8CBB448990F9; Mon, 23 Nov 2020 08:41:43 +0800 (CST) Received: from G08CNEXCHPEKD05.g08.fujitsu.local (10.167.33.203) by G08CNEXMBPEKD04.g08.fujitsu.local (10.167.33.201) with Microsoft SMTP Server (TLS) id 15.0.1497.2; Mon, 23 Nov 2020 08:41:44 +0800 Received: from localhost.localdomain (10.167.225.141) by G08CNEXCHPEKD05.g08.fujitsu.local (10.167.33.209) with Microsoft SMTP Server id 15.0.1497.2 via Frontend Transport; Mon, 23 Nov 2020 08:41:43 +0800 From: Shiyang Ruan To: , , , Subject: [RFC PATCH v2 4/6] pagemap: introduce ->memory_failure() Date: Mon, 23 Nov 2020 08:41:14 +0800 Message-ID: <20201123004116.2453-5-ruansy.fnst@cn.fujitsu.com> X-Mailer: git-send-email 2.29.2 In-Reply-To: <20201123004116.2453-1-ruansy.fnst@cn.fujitsu.com> References: <20201123004116.2453-1-ruansy.fnst@cn.fujitsu.com> MIME-Version: 1.0 X-yoursite-MailScanner-ID: 8CBB448990F9.AB124 X-yoursite-MailScanner: Found to be clean X-yoursite-MailScanner-From: ruansy.fnst@cn.fujitsu.com Message-ID-Hash: 5OAXML47UUVN2FVEKGFJUYALCXR7BO5N X-Message-ID-Hash: 5OAXML47UUVN2FVEKGFJUYALCXR7BO5N X-MailFrom: ruansy.fnst@cn.fujitsu.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: linux-fsdevel@vger.kernel.org, linux-raid@vger.kernel.org, darrick.wong@oracle.com, david@fromorbit.com, hch@lst.de, song@kernel.org, rgoldwyn@suse.de, qi.fuli@fujitsu.com, y-goto@fujitsu.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: When memory-failure occurs, we call this function which is implemented by each devices. For fsdax, pmem device implements it. Pmem device will find out the block device where the error page located in, gets the filesystem on this block device, and finally call ->storage_lost() to handle the error in filesystem layer. Signed-off-by: Shiyang Ruan --- drivers/nvdimm/pmem.c | 23 +++++++++++++++++++++++ include/linux/memremap.h | 3 +++ 2 files changed, 26 insertions(+) diff --git a/drivers/nvdimm/pmem.c b/drivers/nvdimm/pmem.c index d75a3f370f3c..1b1dbca090fa 100644 --- a/drivers/nvdimm/pmem.c +++ b/drivers/nvdimm/pmem.c @@ -390,9 +390,32 @@ static void pmem_release_disk(void *__pmem) put_disk(pmem->disk); } +static int pmem_pagemap_memory_failure(struct dev_pagemap *pgmap, + struct mf_recover_controller *mfrc) +{ + struct pmem_device *pdev; + struct gendisk *disk; + loff_t disk_offset; + int rc = 0; + + pdev = container_of(pgmap, struct pmem_device, pgmap); + disk = pdev->disk; + if (!disk) + return -ENXIO; + + disk_offset = PFN_PHYS(mfrc->pfn) - pdev->phys_addr - pdev->data_offset; + if (disk->fops->block_lost) { + rc = disk->fops->block_lost(disk, NULL, disk_offset, mfrc); + if (rc == -ENODEV) + rc = -ENXIO; + } + return rc; +} + static const struct dev_pagemap_ops fsdax_pagemap_ops = { .kill = pmem_pagemap_kill, .cleanup = pmem_pagemap_cleanup, + .memory_failure = pmem_pagemap_memory_failure, }; static int pmem_attach_disk(struct device *dev, diff --git a/include/linux/memremap.h b/include/linux/memremap.h index 79c49e7f5c30..6aae0fe394ba 100644 --- a/include/linux/memremap.h +++ b/include/linux/memremap.h @@ -7,6 +7,7 @@ struct resource; struct device; +struct mf_recover_controller; /** * struct vmem_altmap - pre-allocated storage for vmemmap_populate @@ -87,6 +88,8 @@ struct dev_pagemap_ops { * the page back to a CPU accessible page. */ vm_fault_t (*migrate_to_ram)(struct vm_fault *vmf); + int (*memory_failure)(struct dev_pagemap *pgmap, + struct mf_recover_controller *mfrc); }; #define PGMAP_ALTMAP_VALID (1 << 0)