diff options
Diffstat (limited to 'drivers/nvdimm/label.c')
| -rw-r--r-- | drivers/nvdimm/label.c | 72 |
1 files changed, 53 insertions, 19 deletions
diff --git a/drivers/nvdimm/label.c b/drivers/nvdimm/label.c index c37357210428..fac7cabe8f56 100644 --- a/drivers/nvdimm/label.c +++ b/drivers/nvdimm/label.c @@ -494,12 +494,13 @@ static int __pmem_label_update(struct nd_region *nd_region, struct nd_mapping *nd_mapping, struct nd_namespace_pmem *nspm, int pos) { - u64 cookie = nd_region_interleave_set_cookie(nd_region), rawsize; + u64 cookie = nd_region_interleave_set_cookie(nd_region); struct nvdimm_drvdata *ndd = to_ndd(nd_mapping); - struct nd_namespace_label *victim_label; + struct nd_label_ent *label_ent, *victim = NULL; struct nd_namespace_label *nd_label; struct nd_namespace_index *nsindex; - struct nd_label_ent *label_ent; + struct nd_label_id label_id; + struct resource *res; unsigned long *free; u32 nslot, slot; size_t offset; @@ -508,6 +509,16 @@ static int __pmem_label_update(struct nd_region *nd_region, if (!preamble_next(ndd, &nsindex, &free, &nslot)) return -ENXIO; + nd_label_gen_id(&label_id, nspm->uuid, 0); + for_each_dpa_resource(ndd, res) + if (strcmp(res->name, label_id.id) == 0) + break; + + if (!res) { + WARN_ON_ONCE(1); + return -ENXIO; + } + /* allocate and write the label to the staging (next) index */ slot = nd_label_alloc_slot(ndd); if (slot == UINT_MAX) @@ -523,11 +534,10 @@ static int __pmem_label_update(struct nd_region *nd_region, nd_label->nlabel = __cpu_to_le16(nd_region->ndr_mappings); nd_label->position = __cpu_to_le16(pos); nd_label->isetcookie = __cpu_to_le64(cookie); - rawsize = div_u64(resource_size(&nspm->nsio.res), - nd_region->ndr_mappings); - nd_label->rawsize = __cpu_to_le64(rawsize); - nd_label->dpa = __cpu_to_le64(nd_mapping->start); + nd_label->rawsize = __cpu_to_le64(resource_size(res)); + nd_label->dpa = __cpu_to_le64(res->start); nd_label->slot = __cpu_to_le32(slot); + nd_dbg_dpa(nd_region, ndd, res, "%s\n", __func__); /* update label */ offset = nd_label_offset(ndd, nd_label); @@ -538,22 +548,39 @@ static int __pmem_label_update(struct nd_region *nd_region, /* Garbage collect the previous label */ mutex_lock(&nd_mapping->lock); - label_ent = list_first_entry_or_null(&nd_mapping->labels, - typeof(*label_ent), list); - WARN_ON(!label_ent); - victim_label = label_ent ? label_ent->label : NULL; - if (victim_label) { - label_ent->label = NULL; - slot = to_slot(ndd, victim_label); - nd_label_free_slot(ndd, slot); + list_for_each_entry(label_ent, &nd_mapping->labels, list) { + if (!label_ent->label) + continue; + if (memcmp(nspm->uuid, label_ent->label->uuid, + NSLABEL_UUID_LEN) != 0) + continue; + victim = label_ent; + list_move_tail(&victim->list, &nd_mapping->labels); + break; + } + if (victim) { dev_dbg(ndd->dev, "%s: free: %d\n", __func__, slot); + slot = to_slot(ndd, victim->label); + nd_label_free_slot(ndd, slot); + victim->label = NULL; } /* update index */ rc = nd_label_write_index(ndd, ndd->ns_next, nd_inc_seq(__le32_to_cpu(nsindex->seq)), 0); - if (rc == 0 && label_ent) - label_ent->label = nd_label; + if (rc == 0) { + list_for_each_entry(label_ent, &nd_mapping->labels, list) + if (!label_ent->label) { + label_ent->label = nd_label; + nd_label = NULL; + break; + } + dev_WARN_ONCE(&nspm->nsio.common.dev, nd_label, + "failed to track label: %d\n", + to_slot(ndd, nd_label)); + if (nd_label) + rc = -ENXIO; + } mutex_unlock(&nd_mapping->lock); return rc; @@ -899,7 +926,9 @@ int nd_pmem_namespace_label_update(struct nd_region *nd_region, for (i = 0; i < nd_region->ndr_mappings; i++) { struct nd_mapping *nd_mapping = &nd_region->mapping[i]; - int rc; + struct nvdimm_drvdata *ndd = to_ndd(nd_mapping); + struct resource *res; + int rc, count = 0; if (size == 0) { rc = del_labels(nd_mapping, nspm->uuid); @@ -908,7 +937,12 @@ int nd_pmem_namespace_label_update(struct nd_region *nd_region, continue; } - rc = init_labels(nd_mapping, 1); + for_each_dpa_resource(ndd, res) + if (strncmp(res->name, "pmem", 3) == 0) + count++; + WARN_ON_ONCE(!count); + + rc = init_labels(nd_mapping, count); if (rc < 0) return rc; |