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authorDan Williams <dan.j.williams@intel.com>2016-09-19 16:04:21 -0700
committerDan Williams <dan.j.williams@intel.com>2016-09-30 19:13:42 -0700
commitae8219f186d8e98a3239afc6ea49bb46f2871d2f (patch)
tree8c32ce83b2e3b6d5b9a7565edd2ab305436131ef /drivers/nvdimm/nd.h
parent44c462eb9e19dfa089b454271dd2dff5eaf1ad6d (diff)
downloadlinux-ae8219f186d8e98a3239afc6ea49bb46f2871d2f.tar.bz2
libnvdimm, label: convert label tracking to a linked list
In preparation for enabling multiple namespaces per pmem region, convert the label tracking to use a linked list. In particular this will allow select_pmem_id() to move labels from the unvalidated state to the validated state. Currently we only track one validated set per-region. Signed-off-by: Dan Williams <dan.j.williams@intel.com>
Diffstat (limited to 'drivers/nvdimm/nd.h')
-rw-r--r--drivers/nvdimm/nd.h16
1 files changed, 12 insertions, 4 deletions
diff --git a/drivers/nvdimm/nd.h b/drivers/nvdimm/nd.h
index e58c40824e1f..f67c61f1a8a4 100644
--- a/drivers/nvdimm/nd.h
+++ b/drivers/nvdimm/nd.h
@@ -83,9 +83,6 @@ static inline struct nd_namespace_index *to_next_namespace_index(
(unsigned long long) (res ? resource_size(res) : 0), \
(unsigned long long) (res ? res->start : 0), ##arg)
-#define for_each_label(l, label, labels) \
- for (l = 0; (label = labels ? labels[l] : NULL); l++)
-
#define for_each_dpa_resource(ndd, res) \
for (res = (ndd)->dpa.child; res; res = res->sibling)
@@ -98,11 +95,22 @@ struct nd_percpu_lane {
spinlock_t lock;
};
+struct nd_label_ent {
+ struct list_head list;
+ struct nd_namespace_label *label;
+};
+
+enum nd_mapping_lock_class {
+ ND_MAPPING_CLASS0,
+ ND_MAPPING_UUID_SCAN,
+};
+
struct nd_mapping {
struct nvdimm *nvdimm;
- struct nd_namespace_label **labels;
u64 start;
u64 size;
+ struct list_head labels;
+ struct mutex lock;
/*
* @ndd is for private use at region enable / disable time for
* get_ndd() + put_ndd(), all other nd_mapping to ndd