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path: root/drivers/md/persistent-data/dm-btree-spine.c
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Diffstat (limited to 'drivers/md/persistent-data/dm-btree-spine.c')
-rw-r--r--drivers/md/persistent-data/dm-btree-spine.c37
1 files changed, 37 insertions, 0 deletions
diff --git a/drivers/md/persistent-data/dm-btree-spine.c b/drivers/md/persistent-data/dm-btree-spine.c
index 1b5e13ec7f96..0dee514ba4c5 100644
--- a/drivers/md/persistent-data/dm-btree-spine.c
+++ b/drivers/md/persistent-data/dm-btree-spine.c
@@ -249,3 +249,40 @@ int shadow_root(struct shadow_spine *s)
{
return s->root;
}
+
+static void le64_inc(void *context, const void *value_le)
+{
+ struct dm_transaction_manager *tm = context;
+ __le64 v_le;
+
+ memcpy(&v_le, value_le, sizeof(v_le));
+ dm_tm_inc(tm, le64_to_cpu(v_le));
+}
+
+static void le64_dec(void *context, const void *value_le)
+{
+ struct dm_transaction_manager *tm = context;
+ __le64 v_le;
+
+ memcpy(&v_le, value_le, sizeof(v_le));
+ dm_tm_dec(tm, le64_to_cpu(v_le));
+}
+
+static int le64_equal(void *context, const void *value1_le, const void *value2_le)
+{
+ __le64 v1_le, v2_le;
+
+ memcpy(&v1_le, value1_le, sizeof(v1_le));
+ memcpy(&v2_le, value2_le, sizeof(v2_le));
+ return v1_le == v2_le;
+}
+
+void init_le64_type(struct dm_transaction_manager *tm,
+ struct dm_btree_value_type *vt)
+{
+ vt->context = tm;
+ vt->size = sizeof(__le64);
+ vt->inc = le64_inc;
+ vt->dec = le64_dec;
+ vt->equal = le64_equal;
+}