MDEV-14126: Fix type mismatch

Backport some changes to B-tree page accessor functions from 10.3,
including changing page_get_n_recs() to return uint16_t.

storage/innobase/include/page0page.h

@@ -175,7 +175,7 @@ inline
 page_t*
 page_align(const void* ptr)
 {
-	return(static_cast<page_t*>(ut_align_down(ptr, UNIV_PAGE_SIZE)));
+	return(static_cast<page_t*>(ut_align_down(ptr, srv_page_size)));
 }
 
 /** Gets the byte offset within a page frame.
@@ -186,7 +186,7 @@ inline
 ulint
 page_offset(const void*	ptr)
 {
-	return(ut_align_offset(ptr, UNIV_PAGE_SIZE));
+	return(ut_align_offset(ptr, srv_page_size));
 }
 
 /** Determine whether an index page is not in ROW_FORMAT=REDUNDANT.
@@ -286,7 +286,7 @@ page_rec_is_user_rec_low(ulint offset)
 	compile_time_assert(PAGE_NEW_SUPREMUM < PAGE_OLD_SUPREMUM_END);
 	compile_time_assert(PAGE_OLD_SUPREMUM < PAGE_NEW_SUPREMUM_END);
 	ut_ad(offset >= PAGE_NEW_INFIMUM);
-	ut_ad(offset <= UNIV_PAGE_SIZE - PAGE_EMPTY_DIR_START);
+	ut_ad(offset <= srv_page_size - PAGE_EMPTY_DIR_START);
 
 	return(offset != PAGE_NEW_SUPREMUM
 	       && offset != PAGE_NEW_INFIMUM
@@ -302,7 +302,7 @@ bool
 page_rec_is_supremum_low(ulint offset)
 {
 	ut_ad(offset >= PAGE_NEW_INFIMUM);
-	ut_ad(offset <= UNIV_PAGE_SIZE - PAGE_EMPTY_DIR_START);
+	ut_ad(offset <= srv_page_size - PAGE_EMPTY_DIR_START);
 	return(offset == PAGE_NEW_SUPREMUM || offset == PAGE_OLD_SUPREMUM);
 }
 
@@ -314,7 +314,7 @@ bool
 page_rec_is_infimum_low(ulint offset)
 {
 	ut_ad(offset >= PAGE_NEW_INFIMUM);
-	ut_ad(offset <= UNIV_PAGE_SIZE - PAGE_EMPTY_DIR_START);
+	ut_ad(offset <= srv_page_size - PAGE_EMPTY_DIR_START);
 	return(offset == PAGE_NEW_INFIMUM || offset == PAGE_OLD_INFIMUM);
 }
 
@@ -455,7 +455,7 @@ page_header_set_field(
 Returns the offset stored in the given header field.
 @return offset from the start of the page, or 0 */
 UNIV_INLINE
-ulint
+uint16_t
 page_header_get_offs(
 /*=================*/
 	const page_t*	page,	/*!< in: page */
@@ -549,7 +549,7 @@ Gets the number of user records on page (the infimum and supremum records
 are not user records).
 @return number of user records */
 UNIV_INLINE
-ulint
+uint16_t
 page_get_n_recs(
 /*============*/
 	const page_t*	page);	/*!< in: index page */
@@ -567,7 +567,7 @@ page_rec_get_n_recs_before(
 Gets the number of records in the heap.
 @return number of user records */
 UNIV_INLINE
-ulint
+uint16_t
 page_dir_get_n_heap(
 /*================*/
 	const page_t*	page);	/*!< in: index page */
@@ -588,7 +588,7 @@ page_dir_set_n_heap(
 Gets the number of dir slots in directory.
 @return number of slots */
 UNIV_INLINE
-ulint
+uint16_t
 page_dir_get_n_slots(
 /*=================*/
 	const page_t*	page);	/*!< in: index page */
@@ -614,7 +614,7 @@ page_dir_get_nth_slot(
 	ulint		n);	/*!< in: position */
 #else /* UNIV_DEBUG */
 # define page_dir_get_nth_slot(page, n)			\
-	((page) + (UNIV_PAGE_SIZE - PAGE_DIR		\
+	((page) + (srv_page_size - PAGE_DIR		\
 		   - (n + 1) * PAGE_DIR_SLOT_SIZE))
 #endif /* UNIV_DEBUG */
 /**************************************************************//**
@@ -868,7 +868,7 @@ Returns the sum of the sizes of the records in the record list
 excluding the infimum and supremum records.
 @return data in bytes */
 UNIV_INLINE
-ulint
+uint16_t
 page_get_data_size(
 /*===============*/
 	const page_t*	page);	/*!< in: index page */

storage/innobase/include/page0page.ic

@@ -188,19 +188,17 @@ page_header_set_field(
 Returns the offset stored in the given header field.
 @return offset from the start of the page, or 0 */
 UNIV_INLINE
-ulint
+uint16_t
 page_header_get_offs(
 /*=================*/
 	const page_t*	page,	/*!< in: page */
 	ulint		field)	/*!< in: PAGE_FREE, ... */
 {
-	ulint	offs;
-
 	ut_ad((field == PAGE_FREE)
 	      || (field == PAGE_LAST_INSERT)
 	      || (field == PAGE_HEAP_TOP));
 
-	offs = page_header_get_field(page, field);
+	uint16_t offs = page_header_get_field(page, field);
 
 	ut_ad((field != PAGE_HEAP_TOP) || offs);
 
@@ -400,7 +398,8 @@ page_get_middle_rec(
 /*================*/
 	page_t*	page)	/*!< in: page */
 {
-	ulint	middle = (page_get_n_recs(page) + PAGE_HEAP_NO_USER_LOW) / 2;
+	ulint	middle = (ulint(page_get_n_recs(page))
+			  + PAGE_HEAP_NO_USER_LOW) / 2;
 
 	return(page_rec_get_nth(page, middle));
 }
@@ -441,7 +440,7 @@ Gets the number of user records on page (infimum and supremum records
 are not user records).
 @return number of user records */
 UNIV_INLINE
-ulint
+uint16_t
 page_get_n_recs(
 /*============*/
 	const page_t*	page)	/*!< in: index page */
@@ -454,7 +453,7 @@ page_get_n_recs(
 Gets the number of dir slots in directory.
 @return number of slots */
 UNIV_INLINE
-ulint
+uint16_t
 page_dir_get_n_slots(
 /*=================*/
 	const page_t*	page)	/*!< in: index page */
@@ -479,7 +478,7 @@ page_dir_set_n_slots(
 Gets the number of records in the heap.
 @return number of user records */
 UNIV_INLINE
-ulint
+uint16_t
 page_dir_get_n_heap(
 /*================*/
 	const page_t*	page)	/*!< in: index page */
@@ -524,7 +523,7 @@ page_dir_get_nth_slot(
 	ut_ad(page_dir_get_n_slots(page) > n);
 
 	return((page_dir_slot_t*)
-	       page + UNIV_PAGE_SIZE - PAGE_DIR
+	       page + srv_page_size - PAGE_DIR
 	       - (n + 1) * PAGE_DIR_SLOT_SIZE);
 }
 #endif /* UNIV_DEBUG */
@@ -643,7 +642,7 @@ page_rec_get_next_low(
 
 	offs = rec_get_next_offs(rec, comp);
 
-	if (offs >= UNIV_PAGE_SIZE) {
+	if (offs >= srv_page_size) {
 		fprintf(stderr,
 			"InnoDB: Next record offset is nonsensical %lu"
 			" in record at offset %lu\n"
@@ -832,9 +831,8 @@ page_rec_get_base_extra_size(
 /*=========================*/
 	const rec_t*	rec)	/*!< in: physical record */
 {
-#if REC_N_NEW_EXTRA_BYTES + 1 != REC_N_OLD_EXTRA_BYTES
-# error "REC_N_NEW_EXTRA_BYTES + 1 != REC_N_OLD_EXTRA_BYTES"
-#endif
+	compile_time_assert(REC_N_NEW_EXTRA_BYTES + 1
+			    == REC_N_OLD_EXTRA_BYTES);
 	return(REC_N_NEW_EXTRA_BYTES + (ulint) !page_rec_is_comp(rec));
 }
 
@@ -845,21 +843,17 @@ Returns the sum of the sizes of the records in the record list, excluding
 the infimum and supremum records.
 @return data in bytes */
 UNIV_INLINE
-ulint
+uint16_t
 page_get_data_size(
 /*===============*/
 	const page_t*	page)	/*!< in: index page */
 {
-	ulint	ret;
-
-	ret = (ulint)(page_header_get_field(page, PAGE_HEAP_TOP)
-		      - (page_is_comp(page)
-			 ? PAGE_NEW_SUPREMUM_END
-			 : PAGE_OLD_SUPREMUM_END)
-		      - page_header_get_field(page, PAGE_GARBAGE));
-
-	ut_ad(ret < UNIV_PAGE_SIZE);
-
+	uint16_t	ret = page_header_get_field(page, PAGE_HEAP_TOP)
+		- (page_is_comp(page)
+		   ? PAGE_NEW_SUPREMUM_END
+		   : PAGE_OLD_SUPREMUM_END)
+		- page_header_get_field(page, PAGE_GARBAGE);
+	ut_ad(ret < srv_page_size);
 	return(ret);
 }
 
@@ -907,13 +901,13 @@ page_get_free_space_of_empty(
 	ulint	comp)		/*!< in: nonzero=compact page layout */
 {
 	if (comp) {
-		return((ulint)(UNIV_PAGE_SIZE
+		return((ulint)(srv_page_size
 			       - PAGE_NEW_SUPREMUM_END
 			       - PAGE_DIR
 			       - 2 * PAGE_DIR_SLOT_SIZE));
 	}
 
-	return((ulint)(UNIV_PAGE_SIZE
+	return((ulint)(srv_page_size
 		       - PAGE_OLD_SUPREMUM_END
 		       - PAGE_DIR
 		       - 2 * PAGE_DIR_SLOT_SIZE));
@@ -1051,7 +1045,7 @@ page_mem_free(
 		page_zip_dir_delete(page_zip, rec, index, offsets, free);
 	} else {
 		page_header_set_field(page, page_zip, PAGE_N_RECS,
-				      page_get_n_recs(page) - 1);
+				      ulint(page_get_n_recs(page)) - 1);
 	}
 }