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| author | Dan Williams <dan.j.williams@intel.com> | 2017-06-06 21:39:30 +0300 |
|---|---|---|
| committer | Dan Williams <dan.j.williams@intel.com> | 2017-06-16 00:31:40 +0300 |
| commit | 8f2bc2430e4ec53ea961997d760c3b35f729e444 (patch) | |
| tree | b22d8530aca1b1c470c34f6ae46110f030bc4198 /drivers/nvdimm/label.c | |
| parent | faec6f8a1cd2c44e439de35ab3328c5cf7bf52d8 (diff) | |
| download | linux-8f2bc2430e4ec53ea961997d760c3b35f729e444.tar.xz | |
libnvdimm, label: populate 'isetcookie' for blk-aperture namespaces
Starting with the v1.2 definition of namespace labels, the isetcookie
field is populated and validated for blk-aperture namespaces. This adds
some safety against inadvertent copying of namespace labels from one
DIMM-device to another.
Signed-off-by: Dan Williams <dan.j.williams@intel.com>
Diffstat (limited to 'drivers/nvdimm/label.c')
| -rw-r--r-- | drivers/nvdimm/label.c | 12 |
1 files changed, 11 insertions, 1 deletions
diff --git a/drivers/nvdimm/label.c b/drivers/nvdimm/label.c index d8b87d3a0ebe..ba0582fb0e21 100644 --- a/drivers/nvdimm/label.c +++ b/drivers/nvdimm/label.c @@ -787,7 +787,17 @@ static int __blk_label_update(struct nd_region *nd_region, nd_label->flags = __cpu_to_le32(NSLABEL_FLAG_LOCAL); nd_label->nlabel = __cpu_to_le16(0); /* N/A */ nd_label->position = __cpu_to_le16(0); /* N/A */ - nd_label->isetcookie = __cpu_to_le64(0); /* N/A */ + + /* + * Use the presence of the type_guid as a flag to + * determine isetcookie usage for blk-aperture + * namespaces. + */ + if (namespace_label_has(ndd, type_guid)) + nd_label->isetcookie = __cpu_to_le64(nd_set->cookie2); + else + nd_label->isetcookie = __cpu_to_le64(0); /* N/A */ + nd_label->dpa = __cpu_to_le64(res->start); nd_label->rawsize = __cpu_to_le64(resource_size(res)); nd_label->lbasize = __cpu_to_le64(nsblk->lbasize); |