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>,
<linux-fsdevel@vger.kernel.org>, <dm-devel@redhat.com>
Cc: darrick.wong@oracle.com, david@fromorbit.com, hch@lst.de,
agk@redhat.com, snitzer@redhat.com, rgoldwyn@suse.de,
qi.fuli@fujitsu.com, y-goto@fujitsu.com
Subject: [PATCH v3 07/11] pmem: Implement ->corrupted_range() for pmem driver
Date: Mon, 8 Feb 2021 18:55:26 +0800 [thread overview]
Message-ID: <20210208105530.3072869-8-ruansy.fnst@cn.fujitsu.com> (raw)
In-Reply-To: <20210208105530.3072869-1-ruansy.fnst@cn.fujitsu.com>
Obtain the superblock of a pmem disk, and call filesystem's
->corrupted_range() to handle the corrupted data.
Signed-off-by: Shiyang Ruan <ruansy.fnst@cn.fujitsu.com>
---
block/genhd.c | 6 ++++++
drivers/nvdimm/pmem.c | 19 +++++++++++++++++++
include/linux/genhd.h | 1 +
3 files changed, 26 insertions(+)
diff --git a/block/genhd.c b/block/genhd.c
index 419548e92d82..fd7cf03b65a8 100644
--- a/block/genhd.c
+++ b/block/genhd.c
@@ -936,6 +936,12 @@ struct block_device *bdget_disk(struct gendisk *disk, int partno)
return bdev;
}
+struct block_device *bdget_disk_sector(struct gendisk *disk, sector_t sector)
+{
+ return disk_map_sector_rcu(disk, sector);
+}
+EXPORT_SYMBOL(bdget_disk_sector);
+
/*
* print a full list of all partitions - intended for places where the root
* filesystem can't be mounted and thus to give the victim some idea of what
diff --git a/drivers/nvdimm/pmem.c b/drivers/nvdimm/pmem.c
index c77c80e3d155..e38b9f9c7d97 100644
--- a/drivers/nvdimm/pmem.c
+++ b/drivers/nvdimm/pmem.c
@@ -253,6 +253,24 @@ static int pmem_rw_page(struct block_device *bdev, sector_t sector,
return blk_status_to_errno(rc);
}
+static int pmem_corrupted_range(struct gendisk *disk, struct block_device *bdev,
+ loff_t disk_offset, size_t len, void *data)
+{
+ loff_t bdev_offset;
+ sector_t disk_sector = disk_offset >> SECTOR_SHIFT;
+ int rc = -ENODEV;
+
+ bdev = bdget_disk_sector(disk, disk_sector);
+ if (!bdev)
+ return rc;
+
+ bdev_offset = (disk_sector - get_start_sect(bdev)) << SECTOR_SHIFT;
+ rc = bd_corrupted_range(bdev, bdev_offset, bdev_offset, len, data);
+
+ bdput(bdev);
+ return rc;
+}
+
/* see "strong" declaration in tools/testing/nvdimm/pmem-dax.c */
__weak long __pmem_direct_access(struct pmem_device *pmem, pgoff_t pgoff,
long nr_pages, void **kaddr, pfn_t *pfn)
@@ -281,6 +299,7 @@ static const struct block_device_operations pmem_fops = {
.owner = THIS_MODULE,
.submit_bio = pmem_submit_bio,
.rw_page = pmem_rw_page,
+ .corrupted_range = pmem_corrupted_range,
};
static int pmem_dax_zero_page_range(struct dax_device *dax_dev, pgoff_t pgoff,
diff --git a/include/linux/genhd.h b/include/linux/genhd.h
index 751cbd559bba..996f91b08d48 100644
--- a/include/linux/genhd.h
+++ b/include/linux/genhd.h
@@ -248,6 +248,7 @@ static inline void add_disk_no_queue_reg(struct gendisk *disk)
extern void del_gendisk(struct gendisk *gp);
extern struct block_device *bdget_disk(struct gendisk *disk, int partno);
+extern struct block_device *bdget_disk_sector(struct gendisk *disk, sector_t sector);
extern void set_disk_ro(struct gendisk *disk, int flag);
--
2.30.0
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next prev parent reply other threads:[~2021-02-08 10:55 UTC|newest]
Thread overview: 37+ messages / expand[flat|nested] mbox.gz Atom feed top
2021-02-08 10:55 [PATCH v3 00/11] fsdax: introduce fs query to support reflink Shiyang Ruan
2021-02-08 10:55 ` [PATCH v3 01/11] pagemap: Introduce ->memory_failure() Shiyang Ruan
2021-02-10 13:20 ` Christoph Hellwig
2021-03-06 20:36 ` Dan Williams
2021-03-08 3:38 ` ruansy.fnst
2021-03-08 5:23 ` Dan Williams
2021-03-08 11:34 ` ruansy.fnst
2021-03-08 18:01 ` Dan Williams
2021-03-12 10:18 ` ruansy.fnst
2021-03-19 2:17 ` ruansy.fnst
2021-03-24 2:19 ` Dan Williams
2021-03-24 7:47 ` Christoph Hellwig
2021-03-24 16:37 ` Dan Williams
2021-03-24 17:39 ` Christoph Hellwig
2021-03-24 18:00 ` Dan Williams
2021-02-08 10:55 ` [PATCH v3 02/11] blk: Introduce ->corrupted_range() for block device Shiyang Ruan
2021-02-10 13:21 ` Christoph Hellwig
2021-03-04 22:42 ` Darrick J. Wong
2021-03-05 6:10 ` Christoph Hellwig
2021-02-08 10:55 ` [PATCH v3 03/11] fs: Introduce ->corrupted_range() for superblock Shiyang Ruan
2021-02-08 10:55 ` [PATCH v3 04/11] block_dev: Introduce bd_corrupted_range() for block device Shiyang Ruan
2021-02-08 10:55 ` [PATCH v3 05/11] mm, fsdax: Refactor memory-failure handler for dax mapping Shiyang Ruan
2021-02-10 13:33 ` Christoph Hellwig
2021-02-17 2:56 ` Ruan Shiyang
2021-02-18 8:32 ` Christoph Hellwig
2021-02-18 8:59 ` Ruan Shiyang
2021-03-16 3:21 ` zhong jiang
2021-03-17 3:46 ` ruansy.fnst
2021-02-08 10:55 ` [PATCH v3 06/11] mm, pmem: Implement ->memory_failure() in pmem driver Shiyang Ruan
2021-02-10 13:41 ` Christoph Hellwig
2021-02-08 10:55 ` Shiyang Ruan [this message]
2021-02-08 10:55 ` [PATCH v3 08/11] dm: Introduce ->rmap() to find bdev offset Shiyang Ruan
2021-02-08 10:55 ` [PATCH v3 09/11] md: Implement ->corrupted_range() Shiyang Ruan
2021-02-08 10:55 ` [PATCH v3 10/11] xfs: Implement ->corrupted_range() for XFS Shiyang Ruan
2021-02-10 13:44 ` Christoph Hellwig
2021-02-08 10:55 ` [PATCH v3 11/11] fs/dax: Remove useless functions Shiyang Ruan
2021-02-10 13:09 ` Christoph Hellwig
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