IB: redundant btr_pcur_move_to_prev_page() removed

storage/innobase/btr/btr0pcur.cc

@@ -452,66 +452,6 @@ btr_pcur_move_to_next_page(
 	ut_d(page_check_dir(next_page));
 }
 
-/*********************************************************//**
-Moves the persistent cursor to the last record on the previous page. Releases the
-latch on the current page, and bufferunfixes it. Note that there must not be
-modifications on the current page, as then the x-latch can be released only in
-mtr_commit. */
-UNIV_INTERN
-void
-btr_pcur_move_to_prev_page(
-/*=======================*/
-	btr_pcur_t*	cursor,	/*!< in: persistent cursor; must be on the
-				last record of the current page */
-	mtr_t*		mtr)	/*!< in: mtr */
-{
-	ulint		prev_page_no;
-	page_t*		page;
-	buf_block_t*	prev_block;
-	page_t*		prev_page;
-	ulint		mode;
-
-	ut_ad(cursor->pos_state == BTR_PCUR_IS_POSITIONED);
-	ut_ad(cursor->latch_mode != BTR_NO_LATCHES);
-	ut_ad(btr_pcur_is_before_first_on_page(cursor));
-
-	cursor->old_stored = false;
-
-	page = btr_pcur_get_page(cursor);
-	prev_page_no = btr_page_get_prev(page, mtr);
-
-	ut_ad(prev_page_no != FIL_NULL);
-
-        mode = cursor->latch_mode;
-	switch (mode) {
-	case BTR_SEARCH_TREE:
-		mode = BTR_SEARCH_LEAF;
-		break;
-	case BTR_MODIFY_TREE:
-		mode = BTR_MODIFY_LEAF;
-	}
-
-	buf_block_t*	block = btr_pcur_get_block(cursor);
-
-	prev_block = btr_block_get(
-		page_id_t(block->page.id.space(), prev_page_no),
-		block->page.size, mode,
-		btr_pcur_get_btr_cur(cursor)->index, mtr);
-
-	prev_page = buf_block_get_frame(prev_block);
-#ifdef UNIV_BTR_DEBUG
-	ut_a(page_is_comp(prev_page) == page_is_comp(page));
-	ut_a(btr_page_get_next(prev_page, mtr)
-	     == btr_pcur_get_block(cursor)->page.id.page_no());
-#endif /* UNIV_BTR_DEBUG */
-
-	btr_leaf_page_release(btr_pcur_get_block(cursor), mode, mtr);
-
-	page_cur_set_after_last(prev_block, btr_pcur_get_page_cur(cursor));
-
-	ut_d(page_check_dir(prev_page));
-}
-
 /*********************************************************//**
 Moves the persistent cursor backward if it is on the first record of the page.
 Commits mtr. Note that to prevent a possible deadlock, the operation

storage/innobase/include/btr0pcur.h

@@ -359,17 +359,6 @@ btr_pcur_move_to_next_page(
 				last record of the current page */
 	mtr_t*		mtr);	/*!< in: mtr */
 /*********************************************************//**
-Moves the persistent cursor to the last record on the previous page.
-Releases the latch on the current page, and bufferunfixes it.
-Note that there must not be modifications on the current page,
-as then the x-latch can be released only in mtr_commit. */
-void
-btr_pcur_move_to_prev_page(
-/*=======================*/
-	btr_pcur_t*	cursor,	/*!< in: persistent cursor; must be on the
-				last record of the current page */
-	mtr_t*		mtr);	/*!< in: mtr */
-/*********************************************************//**
 Moves the persistent cursor backward if it is on the first record
 of the page. Releases the latch on the current page, and bufferunfixes
 it. Note that to prevent a possible deadlock, the operation first