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, david@fromorbit.com, hch@lst.de, song@kernel.org, rgoldwyn@suse.de, qi.fuli@fujitsu.com, y-goto@fujitsu.com Subject: [RFC PATCH v3 6/9] pmem: Implement ->corrupted_range() for pmem driver Date: Tue, 15 Dec 2020 20:14:11 +0800 [thread overview] Message-ID: <20201215121414.253660-7-ruansy.fnst@cn.fujitsu.com> (raw) In-Reply-To: <20201215121414.253660-1-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 | 12 ++++++++++++ drivers/nvdimm/pmem.c | 24 ++++++++++++++++++++++++ include/linux/genhd.h | 1 + 3 files changed, 37 insertions(+) diff --git a/block/genhd.c b/block/genhd.c index 9387f050c248..436adce123b2 100644 --- a/block/genhd.c +++ b/block/genhd.c @@ -1058,6 +1058,18 @@ struct block_device *bdget_disk(struct gendisk *disk, int partno) } EXPORT_SYMBOL(bdget_disk); +struct block_device *bdget_disk_sector(struct gendisk *disk, sector_t sector) +{ + struct block_device *bdev = NULL; + struct hd_struct *part = disk_map_sector_rcu(disk, sector); + + if (part) + bdev = bdget_part(part); + + return bdev; +} +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 4a114937c43b..4688bff19c20 100644 --- a/drivers/nvdimm/pmem.c +++ b/drivers/nvdimm/pmem.c @@ -253,6 +253,29 @@ 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) +{ + struct super_block *sb; + loff_t bdev_offset; + sector_t disk_sector = disk_offset >> SECTOR_SHIFT; + int rc = 0; + + bdev = bdget_disk_sector(disk, disk_sector); + if (!bdev) + return -ENODEV; + + bdev_offset = (disk_sector - get_start_sect(bdev)) << SECTOR_SHIFT; + sb = get_super(bdev); + if (sb && sb->s_op->corrupted_range) { + rc = sb->s_op->corrupted_range(sb, bdev, bdev_offset, len, data); + drop_super(sb); + } + + 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 +304,7 @@ 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 03da3f603d30..ed06209008b8 100644 --- a/include/linux/genhd.h +++ b/include/linux/genhd.h @@ -303,6 +303,7 @@ static inline void add_disk_no_queue_reg(struct gendisk *disk) extern void del_gendisk(struct gendisk *gp); extern struct gendisk *get_gendisk(dev_t dev, int *partno); 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_device_ro(struct block_device *bdev, int flag); extern void set_disk_ro(struct gendisk *disk, int flag); -- 2.29.2 _______________________________________________ Linux-nvdimm mailing list -- linux-nvdimm@lists.01.org To unsubscribe send an email to linux-nvdimm-leave@lists.01.org
WARNING: multiple messages have this Message-ID (diff)
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: [RFC PATCH v3 6/9] pmem: Implement ->corrupted_range() for pmem driver Date: Tue, 15 Dec 2020 20:14:11 +0800 [thread overview] Message-ID: <20201215121414.253660-7-ruansy.fnst@cn.fujitsu.com> (raw) In-Reply-To: <20201215121414.253660-1-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 | 12 ++++++++++++ drivers/nvdimm/pmem.c | 24 ++++++++++++++++++++++++ include/linux/genhd.h | 1 + 3 files changed, 37 insertions(+) diff --git a/block/genhd.c b/block/genhd.c index 9387f050c248..436adce123b2 100644 --- a/block/genhd.c +++ b/block/genhd.c @@ -1058,6 +1058,18 @@ struct block_device *bdget_disk(struct gendisk *disk, int partno) } EXPORT_SYMBOL(bdget_disk); +struct block_device *bdget_disk_sector(struct gendisk *disk, sector_t sector) +{ + struct block_device *bdev = NULL; + struct hd_struct *part = disk_map_sector_rcu(disk, sector); + + if (part) + bdev = bdget_part(part); + + return bdev; +} +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 4a114937c43b..4688bff19c20 100644 --- a/drivers/nvdimm/pmem.c +++ b/drivers/nvdimm/pmem.c @@ -253,6 +253,29 @@ 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) +{ + struct super_block *sb; + loff_t bdev_offset; + sector_t disk_sector = disk_offset >> SECTOR_SHIFT; + int rc = 0; + + bdev = bdget_disk_sector(disk, disk_sector); + if (!bdev) + return -ENODEV; + + bdev_offset = (disk_sector - get_start_sect(bdev)) << SECTOR_SHIFT; + sb = get_super(bdev); + if (sb && sb->s_op->corrupted_range) { + rc = sb->s_op->corrupted_range(sb, bdev, bdev_offset, len, data); + drop_super(sb); + } + + 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 +304,7 @@ 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 03da3f603d30..ed06209008b8 100644 --- a/include/linux/genhd.h +++ b/include/linux/genhd.h @@ -303,6 +303,7 @@ static inline void add_disk_no_queue_reg(struct gendisk *disk) extern void del_gendisk(struct gendisk *gp); extern struct gendisk *get_gendisk(dev_t dev, int *partno); 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_device_ro(struct block_device *bdev, int flag); extern void set_disk_ro(struct gendisk *disk, int flag); -- 2.29.2
next prev parent reply other threads:[~2020-12-15 12:15 UTC|newest] Thread overview: 54+ messages / expand[flat|nested] mbox.gz Atom feed top 2020-12-15 12:14 [RFC PATCH v3 0/9] fsdax: introduce fs query to support reflink Shiyang Ruan 2020-12-15 12:14 ` Shiyang Ruan 2020-12-15 12:14 ` [RFC PATCH v3 1/9] pagemap: Introduce ->memory_failure() Shiyang Ruan 2020-12-15 12:14 ` Shiyang Ruan 2020-12-15 12:14 ` [RFC PATCH v3 2/9] blk: Introduce ->corrupted_range() for block device Shiyang Ruan 2020-12-15 12:14 ` Shiyang Ruan 2020-12-15 12:14 ` [RFC PATCH v3 3/9] fs: Introduce ->corrupted_range() for superblock Shiyang Ruan 2020-12-15 12:14 ` Shiyang Ruan 2020-12-15 12:14 ` [RFC PATCH v3 4/9] mm, fsdax: Refactor memory-failure handler for dax mapping Shiyang Ruan 2020-12-15 12:14 ` Shiyang Ruan 2020-12-16 21:26 ` Dave Chinner 2020-12-16 21:26 ` Dave Chinner 2020-12-18 1:48 ` Ruan Shiyang 2020-12-18 1:48 ` Ruan Shiyang 2020-12-15 12:14 ` [RFC PATCH v3 5/9] mm, pmem: Implement ->memory_failure() in pmem driver Shiyang Ruan 2020-12-15 12:14 ` Shiyang Ruan 2020-12-15 12:14 ` Shiyang Ruan [this message] 2020-12-15 12:14 ` [RFC PATCH v3 6/9] pmem: Implement ->corrupted_range() for " Shiyang Ruan 2020-12-15 12:14 ` [RFC PATCH v3 7/9] dm: Introduce ->rmap() to find bdev offset Shiyang Ruan 2020-12-15 12:14 ` Shiyang Ruan 2020-12-15 12:14 ` [RFC PATCH v3 8/9] md: Implement ->corrupted_range() Shiyang Ruan 2020-12-15 12:14 ` Shiyang Ruan 2020-12-15 20:51 ` Darrick J. Wong 2020-12-15 20:51 ` Darrick J. Wong 2020-12-15 23:28 ` Dave Chinner 2020-12-15 23:28 ` Dave Chinner 2020-12-18 2:11 ` Ruan Shiyang 2020-12-18 2:11 ` Ruan Shiyang 2021-01-04 23:34 ` Darrick J. Wong 2021-01-04 23:34 ` Darrick J. Wong 2021-01-08 9:52 ` Ruan Shiyang 2021-01-08 9:52 ` Ruan Shiyang 2021-01-08 19:05 ` Darrick J. Wong 2021-01-08 19:05 ` Darrick J. Wong 2020-12-16 5:43 ` Jane Chu 2020-12-16 5:43 ` Jane Chu 2020-12-18 1:50 ` Ruan Shiyang 2020-12-18 1:50 ` Ruan Shiyang 2020-12-15 12:14 ` [RFC PATCH v3 9/9] xfs: Implement ->corrupted_range() for XFS Shiyang Ruan 2020-12-15 12:14 ` Shiyang Ruan 2020-12-15 20:40 ` Darrick J. Wong 2020-12-15 20:40 ` Darrick J. Wong 2020-12-18 2:31 ` Ruan Shiyang 2020-12-18 2:31 ` Ruan Shiyang 2020-12-16 20:55 ` [RFC PATCH v3 0/9] fsdax: introduce fs query to support reflink Jane Chu 2020-12-16 20:55 ` Jane Chu 2020-12-18 2:44 ` Ruan Shiyang 2020-12-18 2:44 ` Ruan Shiyang 2020-12-18 3:49 ` Darrick J. Wong 2020-12-18 3:49 ` Darrick J. Wong 2020-12-18 9:13 ` Ruan Shiyang 2020-12-18 9:13 ` Ruan Shiyang 2021-01-08 18:14 ` Jane Chu 2021-01-08 18:14 ` Jane Chu
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