diff options
Diffstat (limited to 'drivers/nvdimm/label.c')
| -rw-r--r-- | drivers/nvdimm/label.c | 33 |
1 files changed, 27 insertions, 6 deletions
diff --git a/drivers/nvdimm/label.c b/drivers/nvdimm/label.c index ba0582fb0e21..d7f9916c6ed5 100644 --- a/drivers/nvdimm/label.c +++ b/drivers/nvdimm/label.c @@ -696,6 +696,7 @@ static int __blk_label_update(struct nd_region *nd_region, struct resource *res, **old_res_list; struct nd_label_id label_id; u8 uuid[NSLABEL_UUID_LEN]; + int min_dpa_idx = 0; LIST_HEAD(list); u32 nslot, slot; @@ -767,6 +768,18 @@ static int __blk_label_update(struct nd_region *nd_region, } } + /* + * Find the resource associated with the first label in the set + * per the v1.2 namespace specification. + */ + for (i = 0; i < nsblk->num_resources; i++) { + struct resource *min = nsblk->res[min_dpa_idx]; + + res = nsblk->res[i]; + if (res->start < min->start) + min_dpa_idx = i; + } + for (i = 0; i < nsblk->num_resources; i++) { size_t offset; @@ -785,18 +798,26 @@ static int __blk_label_update(struct nd_region *nd_region, memcpy(nd_label->name, nsblk->alt_name, NSLABEL_NAME_LEN); 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 */ /* * Use the presence of the type_guid as a flag to - * determine isetcookie usage for blk-aperture - * namespaces. + * determine isetcookie usage and nlabel + position + * policy for blk-aperture namespaces. */ - if (namespace_label_has(ndd, type_guid)) + if (namespace_label_has(ndd, type_guid)) { + if (i == min_dpa_idx) { + nd_label->nlabel = __cpu_to_le16(nsblk->num_resources); + nd_label->position = __cpu_to_le16(0); + } else { + nd_label->nlabel = __cpu_to_le16(0xffff); + nd_label->position = __cpu_to_le16(0xffff); + } nd_label->isetcookie = __cpu_to_le64(nd_set->cookie2); - else + } else { + 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 */ + } nd_label->dpa = __cpu_to_le64(res->start); nd_label->rawsize = __cpu_to_le64(resource_size(res)); |