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authorDan Williams <dan.j.williams@intel.com>2021-08-24 19:05:35 +0300
committerDan Williams <dan.j.williams@intel.com>2021-08-24 22:08:28 +0300
commit9761b02d40de4b7f9f4947f801b69993817883ee (patch)
tree53e3196289601099fe47a1aad7d93e8b4c84281f /drivers/nvdimm/nd.h
parentb4366a827f6cf6e58c93e076e335d9ee9ee0480f (diff)
downloadlinux-9761b02d40de4b7f9f4947f801b69993817883ee.tar.xz
libnvdimm/labels: Add isetcookie validation helper
In preparation to handle CXL labels with the same code that handles EFI labels, add a specific interleave-set-cookie validation helper rather than a getter since the CXL label type does not support this concept. The answer for CXL labels will always be true. Reviewed-by: Jonathan Cameron <Jonathan.Cameron@huawei.com> Link: https://lore.kernel.org/r/162982113550.1124374.206762177785773038.stgit@dwillia2-desk3.amr.corp.intel.com Signed-off-by: Dan Williams <dan.j.williams@intel.com>
Diffstat (limited to 'drivers/nvdimm/nd.h')
-rw-r--r--drivers/nvdimm/nd.h7
1 files changed, 7 insertions, 0 deletions
diff --git a/drivers/nvdimm/nd.h b/drivers/nvdimm/nd.h
index 61f43f0edabf..b3feaf3699f7 100644
--- a/drivers/nvdimm/nd.h
+++ b/drivers/nvdimm/nd.h
@@ -83,6 +83,13 @@ static inline u64 nsl_get_isetcookie(struct nvdimm_drvdata *ndd,
return __le64_to_cpu(nd_label->isetcookie);
}
+static inline bool nsl_validate_isetcookie(struct nvdimm_drvdata *ndd,
+ struct nd_namespace_label *nd_label,
+ u64 cookie)
+{
+ return cookie == __le64_to_cpu(nd_label->isetcookie);
+}
+
static inline u16 nsl_get_position(struct nvdimm_drvdata *ndd,
struct nd_namespace_label *nd_label)
{