leandrof/linux
1
0
Fork 0
forked from Minki/linux
Code Issues Pull Requests Packages Projects Releases Wiki Activity

nvdimm/pmem: cleanup the disk if pmem_release_disk() is yet assigned

Browse Source 
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: 3dd60fb9d9 ("nvdimm/pmem: stop using q_usage_count as external pgmap refcount")
Reviewed-by: Christoph Hellwig <hch@lst.de>
Signed-off-by: Luis Chamberlain <mcgrof@kernel.org>
Link: https://lore.kernel.org/r/20211103230437.1639990-6-mcgrof@kernel.org
Signed-off-by: Jens Axboe <axboe@kernel.dk>
This commit is contained in:
Luis Chamberlain 2021-11-03 16:04:28 -07:00 committed by Jens Axboe
parent dc104f4bb2
commit accf58afb6
1 changed files with 9 additions and 4 deletions
Show Stats Download Patch File Download Diff File Expand all files Collapse all files

13
drivers/nvdimm/pmem.c
View File

@ -457,8 +457,10 @@ 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);
@ -483,7 +485,8 @@ 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;
@ -498,8 +501,10 @@ 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)