diff options
| author |   Aneesh Kumar K.V <aneesh.kumar@linux.ibm.com> | 2019-11-01 08:57:28 +0530 |
|---|---|---|
| committer |   Dan Williams <dan.j.williams@intel.com> | 2019-11-14 19:08:47 -0800 |
| commit | c1f45d86a522d568aef541dbbc066ccac262b4c3 (patch) | |
| tree | 6e8b9067b3f40f98a0a0e794c0f882bfc0158b8f /drivers/nvdimm | |
| parent | libnvdimm: Trivial comment fix (diff) | |
| download | wireguard-linux-c1f45d86a522d568aef541dbbc066ccac262b4c3.tar.xz wireguard-linux-c1f45d86a522d568aef541dbbc066ccac262b4c3.zip | |
libnvdimm/pfn_dev: Don't clear device memmap area during generic namespace probe
nvdimm core use nd_pfn_validate when looking for devdax or fsdax namespace. In this
case device resources are allocated against nd_namespace_io dev. In-order to
allow remap of range in nd_pfn_clear_memmap_error(), move the device memmap
area clearing while initializing pfn namespace. With this device
resource are allocated against nd_pfn and we can use nd_pfn->dev for remapping.
This also avoids calling nd_pfn_clear_mmap_errors twice. Once while probing the
namespace and second while initializing a pfn namespace.
Signed-off-by: Aneesh Kumar K.V <aneesh.kumar@linux.ibm.com>
Link: https://lore.kernel.org/r/20191101032728.113001-1-aneesh.kumar@linux.ibm.com
Signed-off-by: Dan Williams <dan.j.williams@intel.com>
Diffstat (limited to 'drivers/nvdimm')
| -rw-r--r-- | drivers/nvdimm/pfn_devs.c | 8 |
1 files changed, 7 insertions, 1 deletions
diff --git a/drivers/nvdimm/pfn_devs.c b/drivers/nvdimm/pfn_devs.c index 60d81fae06ee..96727fd493f7 100644 --- a/drivers/nvdimm/pfn_devs.c +++ b/drivers/nvdimm/pfn_devs.c @@ -591,7 +591,7 @@ int nd_pfn_validate(struct nd_pfn *nd_pfn, const char *sig) return -ENXIO; } - return nd_pfn_clear_memmap_errors(nd_pfn); + return 0; } EXPORT_SYMBOL(nd_pfn_validate); @@ -729,6 +729,8 @@ static int nd_pfn_init(struct nd_pfn *nd_pfn) sig = PFN_SIG; rc = nd_pfn_validate(nd_pfn, sig); + if (rc == 0) + return nd_pfn_clear_memmap_errors(nd_pfn); if (rc != -ENODEV) return rc; @@ -796,6 +798,10 @@ static int nd_pfn_init(struct nd_pfn *nd_pfn) checksum = nd_sb_checksum((struct nd_gen_sb *) pfn_sb); pfn_sb->checksum = cpu_to_le64(checksum); + rc = nd_pfn_clear_memmap_errors(nd_pfn); + if (rc) + return rc; + return nvdimm_write_bytes(ndns, SZ_4K, pfn_sb, sizeof(*pfn_sb), 0); } |