mdbx: внутренние переименования subDb в таблицы.

src/layout-dxb.h

@@ -187,10 +187,10 @@ typedef enum page_type {
  * omit entries and pack sorted MDBX_DUPFIXED values after the page header.
  *
  * P_LARGE records occupy one or more contiguous pages where only the
- * first has a page header. They hold the real data of N_BIGDATA nodes.
+ * first has a page header. They hold the real data of N_BIG nodes.
  *
  * P_SUBP sub-pages are small leaf "pages" with duplicate data.
- * A node with flag N_DUPDATA but not N_SUBDATA contains a sub-page.
+ * A node with flag N_DUP but not N_TREE contains a sub-page.
  * (Duplicate data can also go in tables, which use normal pages.)
  *
  * P_META pages contain meta_t, the start point of an MDBX snapshot.
@@ -222,10 +222,10 @@ typedef struct page {
  * Used in pages of type P_BRANCH and P_LEAF without P_DUPFIX.
  * We guarantee 2-byte alignment for 'node_t's.
  *
- * Leaf node flags describe node contents.  N_BIGDATA says the node's
+ * Leaf node flags describe node contents.  N_BIG says the node's
  * data part is the page number of an overflow page with actual data.
- * N_DUPDATA and N_SUBDATA can be combined giving duplicate data in
- * a sub-page/table, and named databases (just N_SUBDATA). */
+ * N_DUP and N_TREE can be combined giving duplicate data in
+ * a sub-page/table, and named databases (just N_TREE). */
 typedef struct node {
 #if __BYTE_ORDER__ == __ORDER_LITTLE_ENDIAN__
   union {
@@ -254,9 +254,9 @@ typedef struct node {
 #define NODESIZE 8u
 
 typedef enum node_flags {
-  N_BIGDATA = 0x01 /* data put on large page */,
-  N_SUBDATA = 0x02 /* data is a table */,
-  N_DUPDATA = 0x04 /* data has duplicates */
+  N_BIG = 0x01 /* data put on large page */,
+  N_TREE = 0x02 /* data is a b-tree */,
+  N_DUP = 0x04 /* data has duplicates */
 } node_flags_t;
 
 #pragma pack(pop)