Merge branches 'arm/omap', 'arm/msm', 'arm/smmu', 'arm/tegra', 'x86/vt-d', 'x86/amd...

[mirror_ubuntu-zesty-kernel.git] / drivers / md / persistent-data / dm-btree-spine.c

diff --git a/drivers/md/persistent-data/dm-btree-spine.c b/drivers/md/persistent-data/dm-btree-spine.c
index 1b5e13ec7f96a670ed7a9b5b472a5d2ee95a7dff..0dee514ba4c5f9e8d34d16e9d239ef333395c7d4 100644 (file)
--- 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;
+}