brin refactoring

Author: dvcer

src/backend/access/brin/brin_tuple.c

@@ -57,7 +57,7 @@ static inline void brin_deconstruct_tuple(BrinDesc *brdesc,
 /*
  * Return a tuple descriptor used for on-disk storage of BRIN tuples.
  */
-static TupleDesc
+TupleDesc
 brtuple_disk_tupdesc(BrinDesc *brdesc)
 {
 	/* We cache these in the BrinDesc */

src/backend/access/common/reloptions.c

@@ -22,6 +22,7 @@
 #include "access/heaptoast.h"
 #include "access/htup_details.h"
 #include "access/nbtree.h"
+#include "access/brin.h"
 #include "access/reloptions.h"
 #include "access/spgist_private.h"
 #include "catalog/pg_type.h"
@@ -343,7 +344,7 @@ static relopt_int intRelOpts[] =
 			"Number of pages that each page range covers in a BRIN index",
 			RELOPT_KIND_BRIN,
 			AccessExclusiveLock
-		}, 128, 1, 131072
+		}, 128, 1, BRIN_MAX_PAGES_PER_RANGE
 	},
 	{
 		{

src/include/access/brin.h

@@ -37,6 +37,7 @@ typedef struct BrinStatsData
 
 
 #define BRIN_DEFAULT_PAGES_PER_RANGE	128
+#define BRIN_MAX_PAGES_PER_RANGE	131072
 #define BrinGetPagesPerRange(relation) \
 	(AssertMacro(relation->rd_rel->relkind == RELKIND_INDEX && \
 				 relation->rd_rel->relam == BRIN_AM_OID), \

src/include/access/brin_tuple.h

@@ -109,4 +109,6 @@ extern BrinMemTuple *brin_memtuple_initialize(BrinMemTuple *dtuple,
 extern BrinMemTuple *brin_deform_tuple(BrinDesc *brdesc,
 									   BrinTuple *tuple, BrinMemTuple *dMemtuple);
 
+extern TupleDesc brtuple_disk_tupdesc(BrinDesc *brdesc);
+
 #endif							/* BRIN_TUPLE_H */