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From:   Shiyang Ruan <ruansy.fnst@cn.fujitsu.com>
To:     <linux-kernel@vger.kernel.org>, <linux-xfs@vger.kernel.org>,
        <linux-nvdimm@lists.01.org>, <linux-mm@kvack.org>
CC:     <linux-fsdevel@vger.kernel.org>, <linux-raid@vger.kernel.org>,
        <darrick.wong@oracle.com>, <dan.j.williams@intel.com>,
        <david@fromorbit.com>, <hch@lst.de>, <song@kernel.org>,
        <rgoldwyn@suse.de>, <qi.fuli@fujitsu.com>, <y-goto@fujitsu.com>
Subject: [PATCH v2 02/10] blk: Introduce ->corrupted_range() for block device
Date:   Tue, 26 Jan 2021 06:55:18 +0800
Message-ID: <20210125225526.1048877-3-ruansy.fnst@cn.fujitsu.com>
In-Reply-To: <20210125225526.1048877-1-ruansy.fnst@cn.fujitsu.com>
References: <20210125225526.1048877-1-ruansy.fnst@cn.fujitsu.com>
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Precedence: bulk

In fsdax mode, the memory failure happens on block device.  So, it is
needed to introduce an interface for block devices.  Each kind of block
device can handle the memory failure in ther own ways.

Signed-off-by: Shiyang Ruan <ruansy.fnst@cn.fujitsu.com>
---
 include/linux/blkdev.h | 2 ++
 1 file changed, 2 insertions(+)

diff --git a/include/linux/blkdev.h b/include/linux/blkdev.h
index f94ee3089e01..e0f5585aa06f 100644
--- a/include/linux/blkdev.h
+++ b/include/linux/blkdev.h
@@ -1867,6 +1867,8 @@ struct block_device_operations {
 	int (*report_zones)(struct gendisk *, sector_t sector,
 			unsigned int nr_zones, report_zones_cb cb, void *data);
 	char *(*devnode)(struct gendisk *disk, umode_t *mode);
+	int (*corrupted_range)(struct gendisk *disk, struct block_device *bdev,
+			       loff_t offset, size_t len, void *data);
 	struct module *owner;
 	const struct pr_ops *pr_ops;
 };
-- 
2.30.0