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From: Jane Chu <jane.chu@oracle.com>
To: dan.j.williams@intel.com, vishal.l.verma@intel.com,
	dave.jiang@intel.com, ira.weiny@intel.com,
	viro@zeniv.linux.org.uk, willy@infradead.org, jack@suse.cz,
	nvdimm@lists.linux.dev, linux-kernel@vger.kernel.org,
	linux-fsdevel@vger.kernel.org
Subject: [PATCH 3/3] libnvdimm/pmem: Provide pmem_dax_clear_poison for dax operation
Date: Tue, 14 Sep 2021 17:31:32 -0600	[thread overview]
Message-ID: <20210914233132.3680546-5-jane.chu@oracle.com> (raw)
In-Reply-To: <20210914233132.3680546-1-jane.chu@oracle.com>

Provide pmem_dax_clear_poison() to struct dax_operations.clear_poison.

Signed-off-by: Jane Chu <jane.chu@oracle.com>
---
 drivers/nvdimm/pmem.c | 17 +++++++++++++++++
 1 file changed, 17 insertions(+)

diff --git a/drivers/nvdimm/pmem.c b/drivers/nvdimm/pmem.c
index 1e0615b8565e..307a53aa3432 100644
--- a/drivers/nvdimm/pmem.c
+++ b/drivers/nvdimm/pmem.c
@@ -294,6 +294,22 @@ static int pmem_dax_zero_page_range(struct dax_device *dax_dev, pgoff_t pgoff,
 				   PAGE_SIZE));
 }
 
+static int pmem_dax_clear_poison(struct dax_device *dax_dev, pgoff_t pgoff,
+					size_t nr_pages)
+{
+	unsigned int len = PFN_PHYS(nr_pages);
+	sector_t sector = PFN_PHYS(pgoff) >> SECTOR_SHIFT;
+	struct pmem_device *pmem = dax_get_private(dax_dev);
+	phys_addr_t pmem_off = sector * 512 + pmem->data_offset;
+	blk_status_t ret;
+
+	if (!is_bad_pmem(&pmem->bb, sector, len))
+		return 0;
+
+	ret = pmem_clear_poison(pmem, pmem_off, len);
+	return (ret == BLK_STS_OK) ? 0 : -EIO;
+}
+
 static long pmem_dax_direct_access(struct dax_device *dax_dev,
 		pgoff_t pgoff, long nr_pages, void **kaddr, pfn_t *pfn)
 {
@@ -326,6 +342,7 @@ static const struct dax_operations pmem_dax_ops = {
 	.copy_from_iter = pmem_copy_from_iter,
 	.copy_to_iter = pmem_copy_to_iter,
 	.zero_page_range = pmem_dax_zero_page_range,
+	.clear_poison = pmem_dax_clear_poison,
 };
 
 static const struct attribute_group *pmem_attribute_groups[] = {
-- 
2.18.4


  parent reply	other threads:[~2021-09-14 23:32 UTC|newest]

Thread overview: 24+ messages / expand[flat|nested]  mbox.gz  Atom feed  top
2021-09-14 23:31 [PATCH 0/3] dax: clear poison on the fly along pwrite Jane Chu
2021-09-14 23:31 ` [PATCH 1/3] dax: introduce dax_operation dax_clear_poison Jane Chu
2021-11-04 17:53   ` Christoph Hellwig
2021-09-14 23:31 ` [PATCH 2/3] dax: introduce dax_clear_poison to dax pwrite operation Jane Chu
2021-11-04 17:53   ` Christoph Hellwig
2021-09-14 23:31 ` [PATCH 2/3] dax: introduce dax clear poison to page aligned " Jane Chu
2021-09-14 23:31 ` Jane Chu [this message]
2021-11-04 17:55   ` [PATCH 3/3] libnvdimm/pmem: Provide pmem_dax_clear_poison for dax operation Christoph Hellwig
2021-11-04 20:27     ` Jane Chu
2021-09-15  4:44 ` [PATCH 0/3] dax: clear poison on the fly along pwrite Dan Williams
2021-09-15  7:22   ` Jane Chu
2021-09-15 16:15     ` Darrick J. Wong
2021-09-15 20:27       ` Dan Williams
2021-09-16  0:05         ` Darrick J. Wong
2021-09-16  7:11         ` Christoph Hellwig
2021-09-16 18:40           ` Dan Williams
2021-09-17 12:53             ` Christoph Hellwig
2021-09-17 15:27               ` Darrick J. Wong
2021-09-17 20:21                 ` Dan Williams
2021-09-18  0:07                   ` Darrick J. Wong
2021-09-17 19:37               ` Dan Williams
2021-09-23 20:48         ` Jane Chu
2021-09-23 20:55       ` Jane Chu
2021-09-23 21:42         ` Dan Williams

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