diff mbox series

[v2,06/13] nvdimm/pmem: cleanup the disk if pmem_release_disk() is yet assigned

Message ID 20211103122157.1215783-7-mcgrof@kernel.org
State Not Applicable
Headers show
Series block: add_disk() error handling stragglers | expand

Commit Message

Luis Chamberlain Nov. 3, 2021, 12:21 p.m. UTC 
Prior to devm being able to use pmem_release_disk() there are other
failure which can occur for which we must account for and release the
disk for. Address those few cases.

Fixes: 3dd60fb9d95d ("nvdimm/pmem: stop using q_usage_count as external pgmap refcount")
Signed-off-by: Luis Chamberlain <mcgrof@kernel.org>
---
 drivers/nvdimm/pmem.c | 13 +++++++++----
 1 file changed, 9 insertions(+), 4 deletions(-)

Comments

Christoph Hellwig Nov. 3, 2021, 4:06 p.m. UTC | #1 
On Wed, Nov 03, 2021 at 05:21:50AM -0700, Luis Chamberlain wrote:
> Prior to devm being able to use pmem_release_disk() there are other
> failure which can occur for which we must account for and release the
> disk for. Address those few cases.
> 
> Fixes: 3dd60fb9d95d ("nvdimm/pmem: stop using q_usage_count as external pgmap refcount")
> Signed-off-by: Luis Chamberlain <mcgrof@kernel.org>

Looks good,

Reviewed-by: Christoph Hellwig <hch@lst.de>
diff mbox series

Patch

diff --git a/drivers/nvdimm/pmem.c b/drivers/nvdimm/pmem.c
index 9cc0d0ebfad1..d98af6c31f42 100644
--- a/drivers/nvdimm/pmem.c
+++ b/drivers/nvdimm/pmem.c
@@ -471,8 +471,10 @@  static int pmem_attach_disk(struct device *dev,
 		bb_range.end = res->end;
 	}
 
-	if (IS_ERR(addr))
-		return PTR_ERR(addr);
+	if (IS_ERR(addr)) {
+		rc = PTR_ERR(addr);
+		goto out;
+	}
 	pmem->virt_addr = addr;
 
 	blk_queue_write_cache(q, true, fua);
@@ -497,7 +499,8 @@  static int pmem_attach_disk(struct device *dev,
 		flags = DAXDEV_F_SYNC;
 	dax_dev = alloc_dax(pmem, disk->disk_name, &pmem_dax_ops, flags);
 	if (IS_ERR(dax_dev)) {
-		return PTR_ERR(dax_dev);
+		rc = PTR_ERR(dax_dev);
+		goto out;
 	}
 	dax_write_cache(dax_dev, nvdimm_has_cache(nd_region));
 	pmem->dax_dev = dax_dev;
@@ -512,8 +515,10 @@  static int pmem_attach_disk(struct device *dev,
 					  "badblocks");
 	if (!pmem->bb_state)
 		dev_warn(dev, "'badblocks' notification disabled\n");
-
 	return 0;
+out:
+	blk_cleanup_disk(pmem->disk);
+	return rc;
 }
 
 static int nd_pmem_probe(struct device *dev)