Transferring a change from main 5.5 into the 5.5.17 build:

| revision-id: inaam.rana@oracle.com-20110930110219-vnpaqghj9hm0grds
| parent: rohit.kalhans@oracle.com-20110930094635-hjhrv55tg6z6pz7y
| committer: Inaam Rana <inaam.rana@oracle.com>
| branch nick: mysql-5.5
| timestamp: Fri 2011-09-30 07:02:19 -0400
| message:
|   Revert original fix for Bug 12612184 and the follow up fix for
|   Bug 12704861.
|
|   Bug 12704861 fix was revno: 3504.1.1 (rb://693)
|   Bug 12612184 fix was revno: 3445.1.10 (rb://678)

storage/innobase/btr/btr0cur.c

@@ -1985,6 +1985,7 @@ btr_cur_optimistic_update(
 	ulint		old_rec_size;
 	dtuple_t*	new_entry;
 	roll_ptr_t	roll_ptr;
+	trx_t*		trx;
 	mem_heap_t*	heap;
 	ulint		i;
 	ulint		n_ext;
@@ -2001,10 +2002,9 @@ btr_cur_optimistic_update(
 
 	heap = mem_heap_create(1024);
 	offsets = rec_get_offsets(rec, index, NULL, ULINT_UNDEFINED, &heap);
-#if defined UNIV_DEBUG || defined UNIV_BLOB_LIGHT_DEBUG
-	ut_a(!rec_offs_any_null_extern(rec, offsets)
-	     || trx_is_recv(thr_get_trx(thr)));
-#endif /* UNIV_DEBUG || UNIV_BLOB_LIGHT_DEBUG */
+#ifdef UNIV_BLOB_NULL_DEBUG
+	ut_a(!rec_offs_any_null_extern(rec, offsets));
+#endif /* UNIV_BLOB_NULL_DEBUG */
 
 #ifdef UNIV_DEBUG
 	if (btr_cur_print_record_ops && thr) {
@@ -2127,11 +2127,13 @@ any_extern:
 
 	page_cur_move_to_prev(page_cursor);
 
+	trx = thr_get_trx(thr);
+
 	if (!(flags & BTR_KEEP_SYS_FLAG)) {
 		row_upd_index_entry_sys_field(new_entry, index, DATA_ROLL_PTR,
 					      roll_ptr);
 		row_upd_index_entry_sys_field(new_entry, index, DATA_TRX_ID,
-					      thr_get_trx(thr)->id);
+					      trx->id);
 	}
 
 	/* There are no externally stored columns in new_entry */
@@ -2217,9 +2219,7 @@ btr_cur_pessimistic_update(
 /*=======================*/
 	ulint		flags,	/*!< in: undo logging, locking, and rollback
 				flags */
-	btr_cur_t*	cursor,	/*!< in/out: cursor on the record to update;
-				cursor may become invalid if *big_rec == NULL
-				|| !(flags & BTR_KEEP_POS_FLAG) */
+	btr_cur_t*	cursor,	/*!< in: cursor on the record to update */
 	mem_heap_t**	heap,	/*!< in/out: pointer to memory heap, or NULL */
 	big_rec_t**	big_rec,/*!< out: big rec vector whose fields have to
 				be stored externally by the caller, or NULL */
@@ -2358,7 +2358,7 @@ btr_cur_pessimistic_update(
 	record to be inserted: we have to remember which fields were such */
 
 	ut_ad(!page_is_comp(page) || !rec_get_node_ptr_flag(rec));
-	ut_ad(rec_offs_validate(rec, index, offsets));
+	offsets = rec_get_offsets(rec, index, offsets, ULINT_UNDEFINED, heap);
 	n_ext += btr_push_update_extern_fields(new_entry, update, *heap);
 
 	if (UNIV_LIKELY_NULL(page_zip)) {
@@ -2381,10 +2381,6 @@ make_external:
 			err = DB_TOO_BIG_RECORD;
 			goto return_after_reservations;
 		}
-
-		ut_ad(page_is_leaf(page));
-		ut_ad(dict_index_is_clust(index));
-		ut_ad(flags & BTR_KEEP_POS_FLAG);
 	}
 
 	/* Store state of explicit locks on rec on the page infimum record,
@@ -2412,8 +2408,6 @@ make_external:
 	rec = btr_cur_insert_if_possible(cursor, new_entry, n_ext, mtr);
 
 	if (rec) {
-		page_cursor->rec = rec;
-
 		lock_rec_restore_from_page_infimum(btr_cur_get_block(cursor),
 						   rec, block);
 
@@ -2427,10 +2421,7 @@ make_external:
 						     rec, index, offsets, mtr);
 		}
 
-		btr_cur_compress_if_useful(
-			cursor,
-			big_rec_vec != NULL && (flags & BTR_KEEP_POS_FLAG),
-			mtr);
+		btr_cur_compress_if_useful(cursor, mtr);
 
 		if (page_zip && !dict_index_is_clust(index)
 		    && page_is_leaf(page)) {
@@ -2450,21 +2441,6 @@ make_external:
 		}
 	}
 
-	if (big_rec_vec) {
-		ut_ad(page_is_leaf(page));
-		ut_ad(dict_index_is_clust(index));
-		ut_ad(flags & BTR_KEEP_POS_FLAG);
-
-		/* btr_page_split_and_insert() in
-		btr_cur_pessimistic_insert() invokes
-		mtr_memo_release(mtr, index->lock, MTR_MEMO_X_LOCK).
-		We must keep the index->lock when we created a
-		big_rec, so that row_upd_clust_rec() can store the
-		big_rec in the same mini-transaction. */
-
-		mtr_x_lock(dict_index_get_lock(index), mtr);
-	}
-
 	/* Was the record to be updated positioned as the first user
 	record on its page? */
 	was_first = page_cur_is_before_first(page_cursor);
@@ -2480,7 +2456,6 @@ make_external:
 	ut_a(rec);
 	ut_a(err == DB_SUCCESS);
 	ut_a(dummy_big_rec == NULL);
-	page_cursor->rec = rec;
 
 	if (dict_index_is_sec_or_ibuf(index)) {
 		/* Update PAGE_MAX_TRX_ID in the index page header.
@@ -2915,12 +2890,10 @@ UNIV_INTERN
 ibool
 btr_cur_compress_if_useful(
 /*=======================*/
-	btr_cur_t*	cursor,	/*!< in/out: cursor on the page to compress;
-				cursor does not stay valid if !adjust and
-				compression occurs */
-	ibool		adjust,	/*!< in: TRUE if should adjust the
-				cursor position even if compression occurs */
-	mtr_t*		mtr)	/*!< in/out: mini-transaction */
+	btr_cur_t*	cursor,	/*!< in: cursor on the page to compress;
+				cursor does not stay valid if compression
+				occurs */
+	mtr_t*		mtr)	/*!< in: mtr */
 {
 	ut_ad(mtr_memo_contains(mtr,
 				dict_index_get_lock(btr_cur_get_index(cursor)),
@@ -2929,7 +2902,7 @@ btr_cur_compress_if_useful(
 				MTR_MEMO_PAGE_X_FIX));
 
 	return(btr_cur_compress_recommendation(cursor, mtr)
-	       && btr_compress(cursor, adjust, mtr));
+	       && btr_compress(cursor, mtr));
 }
 
 /*******************************************************//**
@@ -3171,7 +3144,7 @@ return_after_reservations:
 	mem_heap_free(heap);
 
 	if (ret == FALSE) {
-		ret = btr_cur_compress_if_useful(cursor, FALSE, mtr);
+		ret = btr_cur_compress_if_useful(cursor, mtr);
 	}
 
 	if (n_extents > 0) {
@@ -4160,9 +4133,6 @@ btr_store_big_rec_extern_fields_func(
 					the "external storage" flags in offsets
 					will not correspond to rec when
 					this function returns */
-	const big_rec_t*big_rec_vec,	/*!< in: vector containing fields
-					to be stored externally */
-
 #ifdef UNIV_DEBUG
 	mtr_t*		local_mtr,	/*!< in: mtr containing the
 					latch to rec and to the tree */
@@ -4171,11 +4141,9 @@ btr_store_big_rec_extern_fields_func(
 	ibool		update_in_place,/*! in: TRUE if the record is updated
 					in place (not delete+insert) */
 #endif /* UNIV_DEBUG || UNIV_BLOB_LIGHT_DEBUG */
-	mtr_t*		alloc_mtr)	/*!< in/out: in an insert, NULL;
-					in an update, local_mtr for
-					allocating BLOB pages and
-					updating BLOB pointers; alloc_mtr
-					must not have freed any leaf pages */
+	const big_rec_t*big_rec_vec)	/*!< in: vector containing fields
+					to be stored externally */
+
 {
 	ulint	rec_page_no;
 	byte*	field_ref;
@@ -4194,9 +4162,6 @@ btr_store_big_rec_extern_fields_func(
 
 	ut_ad(rec_offs_validate(rec, index, offsets));
 	ut_ad(rec_offs_any_extern(offsets));
-	ut_ad(local_mtr);
-	ut_ad(!alloc_mtr || alloc_mtr == local_mtr);
-	ut_ad(!update_in_place || alloc_mtr);
 	ut_ad(mtr_memo_contains(local_mtr, dict_index_get_lock(index),
 				MTR_MEMO_X_LOCK));
 	ut_ad(mtr_memo_contains(local_mtr, rec_block, MTR_MEMO_PAGE_X_FIX));
@@ -4212,25 +4177,6 @@ btr_store_big_rec_extern_fields_func(
 	rec_page_no = buf_block_get_page_no(rec_block);
 	ut_a(fil_page_get_type(page_align(rec)) == FIL_PAGE_INDEX);
 
-	if (alloc_mtr) {
-		/* Because alloc_mtr will be committed after
-		mtr, it is possible that the tablespace has been
-		extended when the B-tree record was updated or
-		inserted, or it will be extended while allocating
-		pages for big_rec.
-
-		TODO: In mtr (not alloc_mtr), write a redo log record
-		about extending the tablespace to its current size,
-		and remember the current size. Whenever the tablespace
-		grows as pages are allocated, write further redo log
-		records to mtr. (Currently tablespace extension is not
-		covered by the redo log. If it were, the record would
-		only be written to alloc_mtr, which is committed after
-		mtr.) */
-	} else {
-		alloc_mtr = &mtr;
-	}
-
 	if (UNIV_LIKELY_NULL(page_zip)) {
 		int	err;
 
@@ -4307,7 +4253,7 @@ btr_store_big_rec_extern_fields_func(
 			}
 
 			block = btr_page_alloc(index, hint_page_no,
-					       FSP_NO_DIR, 0, alloc_mtr, &mtr);
+					       FSP_NO_DIR, 0, &mtr);
 			if (UNIV_UNLIKELY(block == NULL)) {
 
 				mtr_commit(&mtr);
@@ -4434,15 +4380,11 @@ btr_store_big_rec_extern_fields_func(
 					goto next_zip_page;
 				}
 
-				if (alloc_mtr == &mtr) {
-					rec_block = buf_page_get(
-						space_id, zip_size,
-						rec_page_no,
-						RW_X_LATCH, &mtr);
-					buf_block_dbg_add_level(
-						rec_block,
-						SYNC_NO_ORDER_CHECK);
-				}
+				rec_block = buf_page_get(space_id, zip_size,
+							 rec_page_no,
+							 RW_X_LATCH, &mtr);
+				buf_block_dbg_add_level(rec_block,
+							SYNC_NO_ORDER_CHECK);
 
 				if (err == Z_STREAM_END) {
 					mach_write_to_4(field_ref
@@ -4476,8 +4418,7 @@ btr_store_big_rec_extern_fields_func(
 
 				page_zip_write_blob_ptr(
 					page_zip, rec, index, offsets,
-					big_rec_vec->fields[i].field_no,
-					alloc_mtr);
+					big_rec_vec->fields[i].field_no, &mtr);
 
 next_zip_page:
 				prev_page_no = page_no;
@@ -4522,23 +4463,19 @@ next_zip_page:
 
 				extern_len -= store_len;
 
-				if (alloc_mtr == &mtr) {
-					rec_block = buf_page_get(
-						space_id, zip_size,
-						rec_page_no,
-						RW_X_LATCH, &mtr);
-					buf_block_dbg_add_level(
-						rec_block,
-						SYNC_NO_ORDER_CHECK);
-				}
+				rec_block = buf_page_get(space_id, zip_size,
+							 rec_page_no,
+							 RW_X_LATCH, &mtr);
+				buf_block_dbg_add_level(rec_block,
+							SYNC_NO_ORDER_CHECK);
 
 				mlog_write_ulint(field_ref + BTR_EXTERN_LEN, 0,
-						 MLOG_4BYTES, alloc_mtr);
+						 MLOG_4BYTES, &mtr);
 				mlog_write_ulint(field_ref
 						 + BTR_EXTERN_LEN + 4,
 						 big_rec_vec->fields[i].len
 						 - extern_len,
-						 MLOG_4BYTES, alloc_mtr);
+						 MLOG_4BYTES, &mtr);
 
 				if (prev_page_no == FIL_NULL) {
 					btr_blob_dbg_add_blob(
@@ -4548,19 +4485,18 @@ next_zip_page:
 
 					mlog_write_ulint(field_ref
 							 + BTR_EXTERN_SPACE_ID,
-							 space_id, MLOG_4BYTES,
-							 alloc_mtr);
+							 space_id,
+							 MLOG_4BYTES, &mtr);
 
 					mlog_write_ulint(field_ref
 							 + BTR_EXTERN_PAGE_NO,
-							 page_no, MLOG_4BYTES,
-							 alloc_mtr);
+							 page_no,
+							 MLOG_4BYTES, &mtr);
 
 					mlog_write_ulint(field_ref
 							 + BTR_EXTERN_OFFSET,
 							 FIL_PAGE_DATA,
-							 MLOG_4BYTES,
-							 alloc_mtr);
+							 MLOG_4BYTES, &mtr);
 				}
 
 				prev_page_no = page_no;

storage/innobase/buf/buf0buf.c

@@ -1715,6 +1715,31 @@ buf_page_set_accessed_make_young(
 	}
 }
 
+/********************************************************************//**
+Resets the check_index_page_at_flush field of a page if found in the buffer
+pool. */
+UNIV_INTERN
+void
+buf_reset_check_index_page_at_flush(
+/*================================*/
+	ulint	space,	/*!< in: space id */
+	ulint	offset)	/*!< in: page number */
+{
+	buf_block_t*	block;
+	buf_pool_t*	buf_pool = buf_pool_get(space, offset);
+
+	buf_pool_mutex_enter(buf_pool);
+
+	block = (buf_block_t*) buf_page_hash_get(buf_pool, space, offset);
+
+	if (block && buf_block_get_state(block) == BUF_BLOCK_FILE_PAGE) {
+		ut_ad(!buf_pool_watch_is_sentinel(buf_pool, &block->page));
+		block->check_index_page_at_flush = FALSE;
+	}
+
+	buf_pool_mutex_exit(buf_pool);
+}
+
 /********************************************************************//**
 Returns the current state of is_hashed of a page. FALSE if the page is
 not in the pool. NOTE that this operation does not fix the page in the

storage/innobase/include/btr0btr.h

 /*****************************************************************************
 
-Copyright (c) 1994, 2011, Oracle and/or its affiliates. All Rights Reserved.
+Copyright (c) 1994, 2010, Innobase Oy. All Rights Reserved.
 
 This program is free software; you can redistribute it and/or modify it under
 the terms of the GNU General Public License as published by the Free Software
@@ -499,14 +499,11 @@ UNIV_INTERN
 ibool
 btr_compress(
 /*=========*/
-	btr_cur_t*	cursor,	/*!< in/out: cursor on the page to merge
-				or lift; the page must not be empty:
-				when deleting records, use btr_discard_page()
-				if the page would become empty */
-	ibool		adjust,	/*!< in: TRUE if should adjust the
-				cursor position even if compression occurs */
-	mtr_t*		mtr)	/*!< in/out: mini-transaction */
-	__attribute__((nonnull));
+	btr_cur_t*	cursor,	/*!< in: cursor on the page to merge or lift;
+				the page must not be empty: in record delete
+				use btr_discard_page if the page would become
+				empty */
+	mtr_t*		mtr);	/*!< in: mtr */
 /*************************************************************//**
 Discards a page from a B-tree. This is used to remove the last record from
 a B-tree page: the whole page must be removed at the same time. This cannot
@@ -568,12 +565,7 @@ btr_page_alloc(
 					page split is made */
 	ulint		level,		/*!< in: level where the page is placed
 					in the tree */
-	mtr_t*		mtr,		/*!< in/out: mini-transaction
-					for the allocation */
-	mtr_t*		init_mtr)	/*!< in/out: mini-transaction
-					for x-latching and initializing
-					the page */
-	__attribute__((nonnull, warn_unused_result));
+	mtr_t*		mtr);		/*!< in: mtr */
 /**************************************************************//**
 Frees a file page used in an index tree. NOTE: cannot free field external
 storage pages because the page must contain info on its level. */
@@ -596,33 +588,6 @@ btr_page_free_low(
 	buf_block_t*	block,	/*!< in: block to be freed, x-latched */
 	ulint		level,	/*!< in: page level */
 	mtr_t*		mtr);	/*!< in: mtr */
-/**************************************************************//**
-Marks all MTR_MEMO_FREE_CLUST_LEAF pages nonfree or free.
-For invoking btr_store_big_rec_extern_fields() after an update,
-we must temporarily mark freed clustered index pages allocated, so
-that off-page columns will not be allocated from them. Between the
-btr_store_big_rec_extern_fields() and mtr_commit() we have to
-mark the pages free again, so that no pages will be leaked. */
-UNIV_INTERN
-void
-btr_mark_freed_leaves(
-/*==================*/
-	dict_index_t*	index,	/*!< in/out: clustered index */
-	mtr_t*		mtr,	/*!< in/out: mini-transaction */
-	ibool		nonfree)/*!< in: TRUE=mark nonfree, FALSE=mark freed */
-	UNIV_COLD __attribute__((nonnull));
-#ifdef UNIV_DEBUG
-/**************************************************************//**
-Validates all pages marked MTR_MEMO_FREE_CLUST_LEAF.
-@see btr_mark_freed_leaves()
-@return TRUE */
-UNIV_INTERN
-ibool
-btr_freed_leaves_validate(
-/*======================*/
-	mtr_t*	mtr)	/*!< in: mini-transaction */
-	__attribute__((nonnull, warn_unused_result));
-#endif /* UNIV_DEBUG */
 #ifdef UNIV_BTR_PRINT
 /*************************************************************//**
 Prints size info of a B-tree. */

storage/innobase/include/btr0cur.h

 /*****************************************************************************
 
-Copyright (c) 1994, 2011, Oracle and/or its affiliates. All Rights Reserved.
+Copyright (c) 1994, 2010, Innobase Oy. All Rights Reserved.
 
 This program is free software; you can redistribute it and/or modify it under
 the terms of the GNU General Public License as published by the Free Software
@@ -36,9 +36,6 @@ Created 10/16/1994 Heikki Tuuri
 #define BTR_NO_LOCKING_FLAG	2	/* do no record lock checking */
 #define BTR_KEEP_SYS_FLAG	4	/* sys fields will be found from the
 					update vector or inserted entry */
-#define BTR_KEEP_POS_FLAG	8	/* btr_cur_pessimistic_update()
-					must keep cursor position when
-					moving columns to big_rec */
 
 #ifndef UNIV_HOTBACKUP
 #include "que0types.h"
@@ -313,9 +310,7 @@ btr_cur_pessimistic_update(
 /*=======================*/
 	ulint		flags,	/*!< in: undo logging, locking, and rollback
 				flags */
-	btr_cur_t*	cursor,	/*!< in/out: cursor on the record to update;
-				cursor may become invalid if *big_rec == NULL
-				|| !(flags & BTR_KEEP_POS_FLAG) */
+	btr_cur_t*	cursor,	/*!< in: cursor on the record to update */
 	mem_heap_t**	heap,	/*!< in/out: pointer to memory heap, or NULL */
 	big_rec_t**	big_rec,/*!< out: big rec vector whose fields have to
 				be stored externally by the caller, or NULL */
@@ -369,13 +364,10 @@ UNIV_INTERN
 ibool
 btr_cur_compress_if_useful(
 /*=======================*/
-	btr_cur_t*	cursor,	/*!< in/out: cursor on the page to compress;
+	btr_cur_t*	cursor,	/*!< in: cursor on the page to compress;
 				cursor does not stay valid if compression
 				occurs */
-	ibool		adjust,	/*!< in: TRUE if should adjust the
-				cursor position even if compression occurs */
-	mtr_t*		mtr)	/*!< in/out: mini-transaction */
-	__attribute__((nonnull));
+	mtr_t*		mtr);	/*!< in: mtr */
 /*******************************************************//**
 Removes the record on which the tree cursor is positioned. It is assumed
 that the mtr has an x-latch on the page where the cursor is positioned,
@@ -518,8 +510,6 @@ btr_store_big_rec_extern_fields_func(
 					the "external storage" flags in offsets
 					will not correspond to rec when
 					this function returns */
-	const big_rec_t*big_rec_vec,	/*!< in: vector containing fields
-					to be stored externally */
 #ifdef UNIV_DEBUG
 	mtr_t*		local_mtr,	/*!< in: mtr containing the
 					latch to rec and to the tree */
@@ -528,12 +518,9 @@ btr_store_big_rec_extern_fields_func(
 	ibool		update_in_place,/*! in: TRUE if the record is updated
 					in place (not delete+insert) */
 #endif /* UNIV_DEBUG || UNIV_BLOB_LIGHT_DEBUG */
-	mtr_t*		alloc_mtr)	/*!< in/out: in an insert, NULL;
-					in an update, local_mtr for
-					allocating BLOB pages and
-					updating BLOB pointers; alloc_mtr
-					must not have freed any leaf pages */
-	__attribute__((nonnull(1,2,3,4,5), warn_unused_result));
+	const big_rec_t*big_rec_vec)	/*!< in: vector containing fields
+					to be stored externally */
+	__attribute__((nonnull));
 
 /** Stores the fields in big_rec_vec to the tablespace and puts pointers to
 them in rec.  The extern flags in rec will have to be set beforehand.
@@ -542,22 +529,21 @@ file segment of the index tree.
 @param index	in: clustered index; MUST be X-latched by mtr
 @param b	in/out: block containing rec; MUST be X-latched by mtr
 @param rec	in/out: clustered index record
-@param offs	in: rec_get_offsets(rec, index);
+@param offsets	in: rec_get_offsets(rec, index);
 		the "external storage" flags in offsets will not be adjusted
-@param big	in: vector containing fields to be stored externally
 @param mtr	in: mini-transaction that holds x-latch on index and b
 @param upd	in: TRUE if the record is updated in place (not delete+insert)
-@param rmtr	in/out: in updates, the mini-transaction that holds rec
+@param big	in: vector containing fields to be stored externally
 @return	DB_SUCCESS or DB_OUT_OF_FILE_SPACE */
 #ifdef UNIV_DEBUG
-# define btr_store_big_rec_extern_fields(index,b,rec,offs,big,mtr,upd,rmtr) \
-	btr_store_big_rec_extern_fields_func(index,b,rec,offs,big,mtr,upd,rmtr)
+# define btr_store_big_rec_extern_fields(index,b,rec,offsets,mtr,upd,big) \
+	btr_store_big_rec_extern_fields_func(index,b,rec,offsets,mtr,upd,big)
 #elif defined UNIV_BLOB_LIGHT_DEBUG
-# define btr_store_big_rec_extern_fields(index,b,rec,offs,big,mtr,upd,rmtr) \
-	btr_store_big_rec_extern_fields_func(index,b,rec,offs,big,upd,rmtr)
+# define btr_store_big_rec_extern_fields(index,b,rec,offsets,mtr,upd,big) \
+	btr_store_big_rec_extern_fields_func(index,b,rec,offsets,upd,big)
 #else
-# define btr_store_big_rec_extern_fields(index,b,rec,offs,big,mtr,upd,rmtr) \
-	btr_store_big_rec_extern_fields_func(index,b,rec,offs,big,rmtr)
+# define btr_store_big_rec_extern_fields(index,b,rec,offsets,mtr,upd,big) \
+	btr_store_big_rec_extern_fields_func(index,b,rec,offsets,big)
 #endif
 
 /*******************************************************************//**

storage/innobase/include/btr0cur.ic

 /*****************************************************************************
 
-Copyright (c) 1994, 2011, Oracle and/or its affiliates. All Rights Reserved.
+Copyright (c) 1994, 2009, Innobase Oy. All Rights Reserved.
 
 This program is free software; you can redistribute it and/or modify it under
 the terms of the GNU General Public License as published by the Free Software
@@ -139,7 +139,7 @@ btr_cur_compress_recommendation(
 	btr_cur_t*	cursor,	/*!< in: btr cursor */
 	mtr_t*		mtr)	/*!< in: mtr */
 {
-	const page_t*		page;
+	page_t*		page;
 
 	ut_ad(mtr_memo_contains(mtr, btr_cur_get_block(cursor),
 				MTR_MEMO_PAGE_X_FIX));

storage/innobase/include/buf0buf.h

 /*****************************************************************************
 
-Copyright (c) 1995, 2011, Oracle and/or its affiliates. All Rights Reserved.
+Copyright (c) 1995, 2010, Innobase Oy. All Rights Reserved.
 
 This program is free software; you can redistribute it and/or modify it under
 the terms of the GNU General Public License as published by the Free Software
@@ -491,6 +491,15 @@ buf_page_peek(
 /*==========*/
 	ulint	space,	/*!< in: space id */
 	ulint	offset);/*!< in: page number */
+/********************************************************************//**
+Resets the check_index_page_at_flush field of a page if found in the buffer
+pool. */
+UNIV_INTERN
+void
+buf_reset_check_index_page_at_flush(
+/*================================*/
+	ulint	space,	/*!< in: space id */
+	ulint	offset);/*!< in: page number */
 #if defined UNIV_DEBUG_FILE_ACCESSES || defined UNIV_DEBUG
 /********************************************************************//**
 Sets file_page_was_freed TRUE if the page is found in the buffer pool.
@@ -600,31 +609,6 @@ buf_block_get_modify_clock(
 #else /* !UNIV_HOTBACKUP */
 # define buf_block_modify_clock_inc(block) ((void) 0)
 #endif /* !UNIV_HOTBACKUP */
-/*******************************************************************//**
-Increments the bufferfix count. */
-UNIV_INLINE
-void
-buf_block_buf_fix_inc_func(
-/*=======================*/
-#ifdef UNIV_SYNC_DEBUG
-	const char*	file,	/*!< in: file name */
-	ulint		line,	/*!< in: line */
-#endif /* UNIV_SYNC_DEBUG */
-	buf_block_t*	block)	/*!< in/out: block to bufferfix */
-	__attribute__((nonnull));
-#ifdef UNIV_SYNC_DEBUG
-/** Increments the bufferfix count.
-@param b	in/out: block to bufferfix
-@param f	in: file name where requested
-@param l	in: line number where requested */
-# define buf_block_buf_fix_inc(b,f,l) buf_block_buf_fix_inc_func(f,l,b)
-#else /* UNIV_SYNC_DEBUG */
-/** Increments the bufferfix count.
-@param b	in/out: block to bufferfix
-@param f	in: file name where requested
-@param l	in: line number where requested */
-# define buf_block_buf_fix_inc(b,f,l) buf_block_buf_fix_inc_func(b)
-#endif /* UNIV_SYNC_DEBUG */
 /********************************************************************//**
 Calculates a page checksum which is stored to the page when it is written
 to a file. Note that we must be careful to calculate the same value

storage/innobase/include/buf0buf.ic

 /*****************************************************************************
 
-Copyright (c) 1995, 2011, Oracle and/or its affiliates. All Rights Reserved.
+Copyright (c) 1995, 2010, Innobase Oy. All Rights Reserved.
 Copyright (c) 2008, Google Inc.
 
 Portions of this file contain modifications contributed and copyrighted by
@@ -944,6 +944,19 @@ buf_block_buf_fix_inc_func(
 
 	block->page.buf_fix_count++;
 }
+#ifdef UNIV_SYNC_DEBUG
+/** Increments the bufferfix count.
+@param b	in/out: block to bufferfix
+@param f	in: file name where requested
+@param l	in: line number where requested */
+# define buf_block_buf_fix_inc(b,f,l) buf_block_buf_fix_inc_func(f,l,b)
+#else /* UNIV_SYNC_DEBUG */
+/** Increments the bufferfix count.
+@param b	in/out: block to bufferfix
+@param f	in: file name where requested
+@param l	in: line number where requested */
+# define buf_block_buf_fix_inc(b,f,l) buf_block_buf_fix_inc_func(b)
+#endif /* UNIV_SYNC_DEBUG */
 
 /*******************************************************************//**
 Decrements the bufferfix count. */
@@ -1194,7 +1207,7 @@ buf_block_dbg_add_level(
 				where we have acquired latch */
 	ulint		level)	/*!< in: latching order level */
 {
-	sync_thread_add_level(&block->lock, level, FALSE);
+	sync_thread_add_level(&block->lock, level);
 }
 #endif /* UNIV_SYNC_DEBUG */
 /********************************************************************//**

storage/innobase/include/fsp0fsp.h

 /*****************************************************************************
 
-Copyright (c) 1995, 2011, Oracle and/or its affiliates. All Rights Reserved.
+Copyright (c) 1995, 2009, Innobase Oy. All Rights Reserved.
 
 This program is free software; you can redistribute it and/or modify it under
 the terms of the GNU General Public License as published by the Free Software
@@ -176,18 +176,19 @@ fseg_n_reserved_pages(
 Allocates a single free page from a segment. This function implements
 the intelligent allocation strategy which tries to minimize
 file space fragmentation.
-@param[in/out] seg_header	segment header
-@param[in] hint			hint of which page would be desirable
-@param[in] direction		if the new page is needed because
+@return	the allocated page offset FIL_NULL if no page could be allocated */
+UNIV_INTERN
+ulint
+fseg_alloc_free_page(
+/*=================*/
+	fseg_header_t*	seg_header, /*!< in: segment header */
+	ulint		hint,	/*!< in: hint of which page would be desirable */
+	byte		direction, /*!< in: if the new page is needed because
 				of an index page split, and records are
 				inserted there in order, into which
 				direction they go alphabetically: FSP_DOWN,
-				FSP_UP, FSP_NO_DIR
-@param[in/out] mtr		mini-transaction
-@return	the allocated page offset FIL_NULL if no page could be allocated */
-#define fseg_alloc_free_page(seg_header, hint, direction, mtr)		\
-	fseg_alloc_free_page_general(seg_header, hint, direction,	\
-				     FALSE, mtr, mtr)
+				FSP_UP, FSP_NO_DIR */
+	mtr_t*		mtr);	/*!< in: mtr handle */
 /**********************************************************************//**
 Allocates a single free page from a segment. This function implements
 the intelligent allocation strategy which tries to minimize file space
@@ -197,7 +198,7 @@ UNIV_INTERN
 ulint
 fseg_alloc_free_page_general(
 /*=========================*/
-	fseg_header_t*	seg_header,/*!< in/out: segment header */
+	fseg_header_t*	seg_header,/*!< in: segment header */
 	ulint		hint,	/*!< in: hint of which page would be desirable */
 	byte		direction,/*!< in: if the new page is needed because
 				of an index page split, and records are
@@ -209,12 +210,7 @@ fseg_alloc_free_page_general(
 				with fsp_reserve_free_extents, then there
 				is no need to do the check for this individual
 				page */
-	mtr_t*		mtr,	/*!< in/out: mini-transaction */
-	mtr_t*		init_mtr)/*!< in/out: mtr or another mini-transaction
-				in which the page should be initialized,
-				or NULL if this is a "fake allocation" of
-				a page that was previously freed in mtr */
-	__attribute__((warn_unused_result, nonnull(1,5)));
+	mtr_t*		mtr);	/*!< in: mtr handle */
 /**********************************************************************//**
 Reserves free pages from a tablespace. All mini-transactions which may
 use several pages from the tablespace should call this function beforehand

storage/innobase/include/mtr0mtr.h

 /*****************************************************************************
 
-Copyright (c) 1995, 2011, Oracle and/or its affiliates. All Rights Reserved.
+Copyright (c) 1995, 2009, Innobase Oy. All Rights Reserved.
 
 This program is free software; you can redistribute it and/or modify it under
 the terms of the GNU General Public License as published by the Free Software
@@ -53,8 +53,6 @@ first 3 values must be RW_S_LATCH, RW_X_LATCH, RW_NO_LATCH */
 #define MTR_MEMO_MODIFY		54
 #define	MTR_MEMO_S_LOCK		55
 #define	MTR_MEMO_X_LOCK		56
-/** The mini-transaction freed a clustered index leaf page. */
-#define MTR_MEMO_FREE_CLUST_LEAF	57
 
 /** @name Log item types
 The log items are declared 'byte' so that the compiler can warn if val
@@ -370,14 +368,11 @@ struct mtr_struct{
 #endif
 	dyn_array_t	memo;	/*!< memo stack for locks etc. */
 	dyn_array_t	log;	/*!< mini-transaction log */
-	unsigned	inside_ibuf:1;
+	ibool		inside_ibuf;
 				/*!< TRUE if inside ibuf changes */
-	unsigned	modifications:1;
-				/*!< TRUE if the mini-transaction
-				modified buffer pool pages */
-	unsigned	freed_clust_leaf:1;
-				/*!< TRUE if MTR_MEMO_FREE_CLUST_LEAF
-				was logged in the mini-transaction */
+	ibool		modifications;
+				/* TRUE if the mtr made modifications to
+				buffer pool pages */
 	ulint		n_log_recs;
 				/* count of how many page initial log records
 				have been written to the mtr log */

storage/innobase/include/mtr0mtr.ic

 /*****************************************************************************
 
-Copyright (c) 1995, 2011, Oracle and/or its affiliates. All Rights Reserved.
+Copyright (c) 1995, 2010, Innobase Oy. All Rights Reserved.
 
 This program is free software; you can redistribute it and/or modify it under
 the terms of the GNU General Public License as published by the Free Software
@@ -43,9 +43,8 @@ mtr_start(
 	dyn_array_create(&(mtr->log));
 
 	mtr->log_mode = MTR_LOG_ALL;
-	mtr->inside_ibuf = FALSE;
 	mtr->modifications = FALSE;
-	mtr->freed_clust_leaf = FALSE;
+	mtr->inside_ibuf = FALSE;
 	mtr->n_log_recs = 0;
 
 	ut_d(mtr->state = MTR_ACTIVE);
@@ -67,8 +66,7 @@ mtr_memo_push(
 
 	ut_ad(object);
 	ut_ad(type >= MTR_MEMO_PAGE_S_FIX);
-	ut_ad(type <= MTR_MEMO_FREE_CLUST_LEAF);
-	ut_ad(type != MTR_MEMO_FREE_CLUST_LEAF || mtr->freed_clust_leaf);
+	ut_ad(type <= MTR_MEMO_X_LOCK);
 	ut_ad(mtr);
 	ut_ad(mtr->magic_n == MTR_MAGIC_N);
 	ut_ad(mtr->state == MTR_ACTIVE);

storage/innobase/include/page0cur.ic

 /*****************************************************************************
 
-Copyright (c) 1994, 2011, Oracle and/or its affiliates. All Rights Reserved.
+Copyright (c) 1994, 2009, Innobase Oy. All Rights Reserved.
 
 This program is free software; you can redistribute it and/or modify it under
 the terms of the GNU General Public License as published by the Free Software
@@ -27,8 +27,6 @@ Created 10/4/1994 Heikki Tuuri
 #include "buf0types.h"
 
 #ifdef UNIV_DEBUG
-# include "rem0cmp.h"
-
 /*********************************************************//**
 Gets pointer to the page frame where the cursor is positioned.
 @return	page */
@@ -270,7 +268,6 @@ page_cur_tuple_insert(
 					      index, rec, offsets, mtr);
 	}
 
-	ut_ad(!rec || !cmp_dtuple_rec(tuple, rec, offsets));
 	mem_heap_free(heap);
 	return(rec);
 }

storage/innobase/include/page0page.h

 /*****************************************************************************
 
-Copyright (c) 1994, 2011, Oracle and/or its affiliates. All Rights Reserved.
+Copyright (c) 1994, 2009, Innobase Oy. All Rights Reserved.
 
 This program is free software; you can redistribute it and/or modify it under
 the terms of the GNU General Public License as published by the Free Software
@@ -281,42 +281,16 @@ page_get_supremum_offset(
 	const page_t*	page);	/*!< in: page which must have record(s) */
 #define page_get_infimum_rec(page) ((page) + page_get_infimum_offset(page))
 #define page_get_supremum_rec(page) ((page) + page_get_supremum_offset(page))
-
-/************************************************************//**
-Returns the nth record of the record list.
-This is the inverse function of page_rec_get_n_recs_before().
-@return	nth record */
-UNIV_INTERN
-const rec_t*
-page_rec_get_nth_const(
-/*===================*/
-	const page_t*	page,	/*!< in: page */
-	ulint		nth)	/*!< in: nth record */
-	__attribute__((nonnull, warn_unused_result));
 /************************************************************//**
-Returns the nth record of the record list.
-This is the inverse function of page_rec_get_n_recs_before().
-@return	nth record */
-UNIV_INLINE
-rec_t*
-page_rec_get_nth(
-/*=============*/
-	page_t*	page,	/*< in: page */
-	ulint	nth)	/*!< in: nth record */
-	__attribute__((nonnull, warn_unused_result));
-
-#ifndef UNIV_HOTBACKUP
-/************************************************************//**
-Returns the middle record of the records on the page. If there is an
-even number of records in the list, returns the first record of the
-upper half-list.
+Returns the middle record of record list. If there are an even number
+of records in the list, returns the first record of upper half-list.
 @return	middle record */
-UNIV_INLINE
+UNIV_INTERN
 rec_t*
 page_get_middle_rec(
 /*================*/
-	page_t*	page)	/*!< in: page */
-	__attribute__((nonnull, warn_unused_result));
+	page_t*	page);	/*!< in: page */
+#ifndef UNIV_HOTBACKUP
 /*************************************************************//**
 Compares a data tuple to a physical record. Differs from the function
 cmp_dtuple_rec_with_match in the way that the record must reside on an
@@ -371,7 +345,6 @@ page_get_n_recs(
 /***************************************************************//**
 Returns the number of records before the given record in chain.
 The number includes infimum and supremum records.
-This is the inverse function of page_rec_get_nth().
 @return	number of records */
 UNIV_INTERN
 ulint

storage/innobase/include/page0page.ic

 /*****************************************************************************
 
-Copyright (c) 1994, 2011, Oracle and/or its affiliates. All Rights Reserved.
+Copyright (c) 1994, 2009, Innobase Oy. All Rights Reserved.
 
 This program is free software; you can redistribute it and/or modify it under
 the terms of the GNU General Public License as published by the Free Software
@@ -419,37 +419,7 @@ page_rec_is_infimum(
 	return(page_rec_is_infimum_low(page_offset(rec)));
 }
 
-/************************************************************//**
-Returns the nth record of the record list.
-This is the inverse function of page_rec_get_n_recs_before().
-@return	nth record */
-UNIV_INLINE
-rec_t*
-page_rec_get_nth(
-/*=============*/
-	page_t*	page,	/*!< in: page */
-	ulint	nth)	/*!< in: nth record */
-{
-	return((rec_t*) page_rec_get_nth_const(page, nth));
-}
-
 #ifndef UNIV_HOTBACKUP
-/************************************************************//**
-Returns the middle record of the records on the page. If there is an
-even number of records in the list, returns the first record of the
-upper half-list.
-@return	middle record */
-UNIV_INLINE
-rec_t*
-page_get_middle_rec(
-/*================*/
-	page_t*	page)	/*!< in: page */
-{
-	ulint	middle = (page_get_n_recs(page) + PAGE_HEAP_NO_USER_LOW) / 2;
-
-	return(page_rec_get_nth(page, middle));
-}
-
 /*************************************************************//**
 Compares a data tuple to a physical record. Differs from the function
 cmp_dtuple_rec_with_match in the way that the record must reside on an

storage/innobase/include/rem0rec.h

@@ -480,7 +480,7 @@ ulint
 rec_offs_any_extern(
 /*================*/
 	const ulint*	offsets);/*!< in: array returned by rec_get_offsets() */
-#if defined UNIV_DEBUG || defined UNIV_BLOB_LIGHT_DEBUG
+#ifdef UNIV_BLOB_NULL_DEBUG
 /******************************************************//**
 Determine if the offsets are for a record containing null BLOB pointers.
 @return	first field containing a null BLOB pointer, or NULL if none found */
@@ -491,7 +491,7 @@ rec_offs_any_null_extern(
 	const rec_t*	rec,		/*!< in: record */
 	const ulint*	offsets)	/*!< in: rec_get_offsets(rec) */
 	__attribute__((nonnull, warn_unused_result));
-#endif /* UNIV_DEBUG || UNIV_BLOB_LIGHT_DEBUG */
+#endif /* UNIV_BLOB_NULL_DEBUG */
 /******************************************************//**
 Returns nonzero if the extern bit is set in nth field of rec.
 @return	nonzero if externally stored */

storage/innobase/include/rem0rec.ic

@@ -1088,7 +1088,7 @@ rec_offs_any_extern(
 	return(UNIV_UNLIKELY(*rec_offs_base(offsets) & REC_OFFS_EXTERNAL));
 }
 
-#if defined UNIV_DEBUG || defined UNIV_BLOB_LIGHT_DEBUG
+#ifdef UNIV_BLOB_NULL_DEBUG
 /******************************************************//**
 Determine if the offsets are for a record containing null BLOB pointers.
 @return	first field containing a null BLOB pointer, or NULL if none found */
@@ -1124,7 +1124,7 @@ rec_offs_any_null_extern(
 
 	return(NULL);
 }
-#endif /* UNIV_DEBUG || UNIV_BLOB_LIGHT_DEBUG */
+#endif /* UNIV_BLOB_NULL_DEBUG */
 
 /******************************************************//**
 Returns nonzero if the extern bit is set in nth field of rec.

storage/innobase/include/sync0rw.ic

 /*****************************************************************************
 
-Copyright (c) 1995, 2011, Oracle and/or its affiliates. All Rights Reserved.
+Copyright (c) 1995, 2009, Innobase Oy. All Rights Reserved.
 Copyright (c) 2008, Google Inc.
 
 Portions of this file contain modifications contributed and copyrighted by
@@ -603,16 +603,16 @@ rw_lock_x_unlock_direct(
 
 	ut_ad((lock->lock_word % X_LOCK_DECR) == 0);
 
+#ifdef UNIV_SYNC_DEBUG
+	rw_lock_remove_debug_info(lock, 0, RW_LOCK_EX);
+#endif
+
 	if (lock->lock_word == 0) {
 		lock->recursive = FALSE;
 		UNIV_MEM_INVALID(&lock->writer_thread,
 				 sizeof lock->writer_thread);
 	}
 
-#ifdef UNIV_SYNC_DEBUG
-	rw_lock_remove_debug_info(lock, 0, RW_LOCK_EX);
-#endif
-
 	lock->lock_word += X_LOCK_DECR;
 
 	ut_ad(!lock->waiters);

storage/innobase/include/sync0sync.h

 /*****************************************************************************
 
-Copyright (c) 1995, 2011, Oracle and/or its affiliates. All Rights Reserved.
+Copyright (c) 1995, 2011, Innobase Oy. All Rights Reserved.
 Copyright (c) 2008, Google Inc.
 
 Portions of this file contain modifications contributed and copyrighted by
@@ -400,10 +400,8 @@ void
 sync_thread_add_level(
 /*==================*/
 	void*	latch,	/*!< in: pointer to a mutex or an rw-lock */
-	ulint	level,	/*!< in: level in the latching order; if
+	ulint	level);	/*!< in: level in the latching order; if
 			SYNC_LEVEL_VARYING, nothing is done */
-	ibool	relock)	/*!< in: TRUE if re-entering an x-lock */
-	__attribute__((nonnull));
 /******************************************************************//**
 Removes a latch from the thread level array if it is found there.
 @return TRUE if found in the array; it is no error if the latch is

storage/innobase/include/univ.i

 /*****************************************************************************
 
-Copyright (c) 1994, 2011, Oracle and/or its affiliates. All Rights Reserved.
+Copyright (c) 1994, 2010, Innobase Oy. All Rights Reserved.
 Copyright (c) 2008, Google Inc.
+Copyright (c) 2009, Sun Microsystems, Inc.
 
 Portions of this file contain modifications contributed and copyrighted by
 Google, Inc. Those modifications are gratefully acknowledged and are described
@@ -185,6 +186,8 @@ command. Not tested on Windows. */
 						debugging without UNIV_DEBUG */
 #define UNIV_BLOB_LIGHT_DEBUG			/* Enable off-page column
 						debugging without UNIV_DEBUG */
+#define UNIV_BLOB_NULL_DEBUG			/* Enable deep off-page
+						column debugging */
 #define UNIV_DEBUG				/* Enable ut_ad() assertions
 						and disable UNIV_INLINE */
 #define UNIV_DEBUG_LOCK_VALIDATE		/* Enable

storage/innobase/mtr/mtr0mtr.c

 /*****************************************************************************
 
-Copyright (c) 1995, 2011, Oracle and/or its affiliates. All Rights Reserved.
+Copyright (c) 1995, 2009, Innobase Oy. All Rights Reserved.
 
 This program is free software; you can redistribute it and/or modify it under
 the terms of the GNU General Public License as published by the Free Software
@@ -64,11 +64,12 @@ mtr_memo_slot_release(
 			buf_page_release((buf_block_t*)object, type);
 		} else if (type == MTR_MEMO_S_LOCK) {
 			rw_lock_s_unlock((rw_lock_t*)object);
+#ifdef UNIV_DEBUG
 		} else if (type != MTR_MEMO_X_LOCK) {
-			ut_ad(type == MTR_MEMO_MODIFY
-			      || type == MTR_MEMO_FREE_CLUST_LEAF);
+			ut_ad(type == MTR_MEMO_MODIFY);
 			ut_ad(mtr_memo_contains(mtr, object,
 						MTR_MEMO_PAGE_X_FIX));
+#endif /* UNIV_DEBUG */
 		} else {
 			rw_lock_x_unlock((rw_lock_t*)object);
 		}

storage/innobase/page/page0cur.c

 /*****************************************************************************
 
-Copyright (c) 1994, 2011, Oracle and/or its affiliates. All Rights Reserved.
+Copyright (c) 1994, 2009, Innobase Oy. All Rights Reserved.
 
 This program is free software; you can redistribute it and/or modify it under
 the terms of the GNU General Public License as published by the Free Software
@@ -1180,15 +1180,14 @@ page_cur_insert_rec_zip_reorg(
 	/* Before trying to reorganize the page,
 	store the number of preceding records on the page. */
 	pos = page_rec_get_n_recs_before(rec);
-	ut_ad(pos > 0);
 
 	if (page_zip_reorganize(block, index, mtr)) {
 		/* The page was reorganized: Find rec by seeking to pos,
 		and update *current_rec. */
-		if (pos > 1) {
-			rec = page_rec_get_nth(page, pos - 1);
-		} else {
-			rec = page + PAGE_NEW_INFIMUM;
+		rec = page + PAGE_NEW_INFIMUM;
+
+		while (--pos) {
+			rec = page + rec_get_next_offs(rec, TRUE);
 		}
 
 		*current_rec = rec;
@@ -1284,12 +1283,6 @@ page_cur_insert_rec_zip(
 			insert_rec = page_cur_insert_rec_zip_reorg(
 				current_rec, block, index, insert_rec,
 				page, page_zip, mtr);
-#ifdef UNIV_DEBUG
-			if (insert_rec) {
-				rec_offs_make_valid(
-					insert_rec, index, offsets);
-			}
-#endif /* UNIV_DEBUG */
 		}
 
 		return(insert_rec);

storage/innobase/page/page0page.c

 /*****************************************************************************
 
-Copyright (c) 1994, 2011, Oracle and/or its affiliates. All Rights Reserved.
+Copyright (c) 1994, 2010, Innobase Oy. All Rights Reserved.
 
 This program is free software; you can redistribute it and/or modify it under
 the terms of the GNU General Public License as published by the Free Software
@@ -1465,54 +1465,55 @@ page_dir_balance_slot(
 	}
 }
 
+#ifndef UNIV_HOTBACKUP
 /************************************************************//**
-Returns the nth record of the record list.
-This is the inverse function of page_rec_get_n_recs_before().
-@return	nth record */
+Returns the middle record of the record list. If there are an even number
+of records in the list, returns the first record of the upper half-list.
+@return	middle record */
 UNIV_INTERN
-const rec_t*
-page_rec_get_nth_const(
-/*===================*/
-	const page_t*	page,	/*!< in: page */
-	ulint		nth)	/*!< in: nth record */
+rec_t*
+page_get_middle_rec(
+/*================*/
+	page_t*	page)	/*!< in: page */
 {
-	const page_dir_slot_t*	slot;
+	page_dir_slot_t*	slot;
+	ulint			middle;
 	ulint			i;
 	ulint			n_owned;
-	const rec_t*		rec;
+	ulint			count;
+	rec_t*			rec;
 
-	ut_ad(nth < UNIV_PAGE_SIZE / (REC_N_NEW_EXTRA_BYTES + 1));
+	/* This many records we must leave behind */
+	middle = (page_get_n_recs(page) + PAGE_HEAP_NO_USER_LOW) / 2;
+
+	count = 0;
 
 	for (i = 0;; i++) {
 
 		slot = page_dir_get_nth_slot(page, i);
 		n_owned = page_dir_slot_get_n_owned(slot);
 
-		if (n_owned > nth) {
+		if (count + n_owned > middle) {
 			break;
 		} else {
-			nth -= n_owned;
+			count += n_owned;
 		}
 	}
 
 	ut_ad(i > 0);
 	slot = page_dir_get_nth_slot(page, i - 1);
-	rec = page_dir_slot_get_rec(slot);
+	rec = (rec_t*) page_dir_slot_get_rec(slot);
+	rec = page_rec_get_next(rec);
 
-	if (page_is_comp(page)) {
-		do {
-			rec = page_rec_get_next_low(rec, TRUE);
-			ut_ad(rec);
-		} while (nth--);
-	} else {
-		do {
-			rec = page_rec_get_next_low(rec, FALSE);
-			ut_ad(rec);
-		} while (nth--);
+	/* There are now count records behind rec */
+
+	for (i = 0; i < middle - count; i++) {
+		rec = page_rec_get_next(rec);
 	}
 
 	return(rec);
 }
+#endif /* !UNIV_HOTBACKUP */
 
 /***************************************************************//**
 Returns the number of records before the given record in chain.
@@ -1574,7 +1575,6 @@ page_rec_get_n_recs_before(
 	n--;
 
 	ut_ad(n >= 0);
-	ut_ad(n < UNIV_PAGE_SIZE / (REC_N_NEW_EXTRA_BYTES + 1));
 
 	return((ulint) n);
 }

storage/innobase/row/row0ins.c

 /*****************************************************************************
 
-Copyright (c) 1996, 2011, Oracle and/or its affiliates. All Rights Reserved.
+Copyright (c) 1996, 2010, Innobase Oy. All Rights Reserved.
 
 This program is free software; you can redistribute it and/or modify it under
 the terms of the GNU General Public License as published by the Free Software
@@ -348,9 +348,9 @@ row_ins_clust_index_entry_by_modify(
 			return(DB_LOCK_TABLE_FULL);
 
 		}
-		err = btr_cur_pessimistic_update(
-			BTR_KEEP_POS_FLAG, cursor, heap, big_rec, update,
-			0, thr, mtr);
+		err = btr_cur_pessimistic_update(0, cursor,
+						 heap, big_rec, update,
+						 0, thr, mtr);
 	}
 
 	return(err);
@@ -1976,7 +1976,6 @@ row_ins_index_entry_low(
 	ulint		modify = 0; /* remove warning */
 	rec_t*		insert_rec;
 	rec_t*		rec;
-	ulint*		offsets;
 	ulint		err;
 	ulint		n_unique;
 	big_rec_t*	big_rec			= NULL;
@@ -2084,51 +2083,6 @@ row_ins_index_entry_low(
 			err = row_ins_clust_index_entry_by_modify(
 				mode, &cursor, &heap, &big_rec, entry,
 				thr, &mtr);
-
-			if (big_rec) {
-				ut_a(err == DB_SUCCESS);
-				/* Write out the externally stored
-				columns, but allocate the pages and
-				write the pointers using the
-				mini-transaction of the record update.
-				If any pages were freed in the update,
-				temporarily mark them allocated so
-				that off-page columns will not
-				overwrite them. We must do this,
-				because we will write the redo log for
-				the BLOB writes before writing the
-				redo log for the record update. Thus,
-				redo log application at crash recovery
-				will see BLOBs being written to free pages. */
-
-				btr_mark_freed_leaves(index, &mtr, TRUE);
-
-				rec = btr_cur_get_rec(&cursor);
-				offsets = rec_get_offsets(
-					rec, index, NULL,
-					ULINT_UNDEFINED, &heap);
-
-				err = btr_store_big_rec_extern_fields(
-					index, btr_cur_get_block(&cursor),
-					rec, offsets, big_rec, &mtr,
-					FALSE, &mtr);
-				/* If writing big_rec fails (for
-				example, because of DB_OUT_OF_FILE_SPACE),
-				the record will be corrupted. Even if
-				we did not update any externally
-				stored columns, our update could cause
-				the record to grow so that a
-				non-updated column was selected for
-				external storage. This non-update
-				would not have been written to the
-				undo log, and thus the record cannot
-				be rolled back. */
-				ut_a(err == DB_SUCCESS);
-				/* Free the pages again
-				in order to avoid a leak. */
-				btr_mark_freed_leaves(index, &mtr, FALSE);
-				goto stored_big_rec;
-			}
 		} else {
 			ut_ad(!n_ext);
 			err = row_ins_sec_index_entry_by_modify(
@@ -2157,6 +2111,8 @@ function_exit:
 	mtr_commit(&mtr);
 
 	if (UNIV_LIKELY_NULL(big_rec)) {
+		rec_t*	rec;
+		ulint*	offsets;
 		mtr_start(&mtr);
 
 		btr_cur_search_to_nth_level(index, 0, entry, PAGE_CUR_LE,
@@ -2168,9 +2124,8 @@ function_exit:
 
 		err = btr_store_big_rec_extern_fields(
 			index, btr_cur_get_block(&cursor),
-			rec, offsets, big_rec, &mtr, FALSE, NULL);
+			rec, offsets, &mtr, FALSE, big_rec);
 
-stored_big_rec:
 		if (modify) {
 			dtuple_big_rec_free(big_rec);
 		} else {
@@ -2443,7 +2398,7 @@ row_ins(
 		node->index = dict_table_get_next_index(node->index);
 		node->entry = UT_LIST_GET_NEXT(tuple_list, node->entry);
 
-		/* Skip corrupted secondary index and its entry */
+		/* Skip corrupted secondar index and its entry */
 		while (node->index && dict_index_is_corrupted(node->index)) {
 
 			node->index = dict_table_get_next_index(node->index);

storage/innobase/row/row0row.c

@@ -233,7 +233,6 @@ row_build(
 
 	ut_ad(index && rec && heap);
 	ut_ad(dict_index_is_clust(index));
-	ut_ad(!mutex_own(&kernel_mutex));
 
 	if (!offsets) {
 		offsets = rec_get_offsets(rec, index, offsets_,
@@ -242,22 +241,13 @@ row_build(
 		ut_ad(rec_offs_validate(rec, index, offsets));
 	}
 
-#if defined UNIV_DEBUG || defined UNIV_BLOB_LIGHT_DEBUG
-	if (rec_offs_any_null_extern(rec, offsets)) {
-		/* This condition can occur during crash recovery
-		before trx_rollback_active() has completed execution.
-
-		This condition is possible if the server crashed
-		during an insert or update-by-delete-and-insert before
-		btr_store_big_rec_extern_fields() did mtr_commit() all
-		BLOB pointers to the freshly inserted clustered index
-		record. */
-		ut_a(trx_assert_recovered(
-			     row_get_rec_trx_id(rec, index, offsets)));
-		ut_a(trx_undo_roll_ptr_is_insert(
-			     row_get_rec_roll_ptr(rec, index, offsets)));
-	}
-#endif /* UNIV_DEBUG || UNIV_BLOB_LIGHT_DEBUG */
+#if 0 && defined UNIV_BLOB_NULL_DEBUG
+	/* This one can fail in trx_rollback_active() if
+	the server crashed during an insert before the
+	btr_store_big_rec_extern_fields() did mtr_commit()
+	all BLOB pointers to the clustered index record. */
+	ut_a(!rec_offs_any_null_extern(rec, offsets));
+#endif /* 0 && UNIV_BLOB_NULL_DEBUG */
 
 	if (type != ROW_COPY_POINTERS) {
 		/* Take a copy of rec to heap */
@@ -442,10 +432,10 @@ row_rec_to_index_entry(
 		rec = rec_copy(buf, rec, offsets);
 		/* Avoid a debug assertion in rec_offs_validate(). */
 		rec_offs_make_valid(rec, index, offsets);
-#if defined UNIV_DEBUG || defined UNIV_BLOB_LIGHT_DEBUG
+#ifdef UNIV_BLOB_NULL_DEBUG
 	} else {
 		ut_a(!rec_offs_any_null_extern(rec, offsets));
-#endif /* UNIV_DEBUG || UNIV_BLOB_LIGHT_DEBUG */
+#endif /* UNIV_BLOB_NULL_DEBUG */
 	}
 
 	entry = row_rec_to_index_entry_low(rec, index, offsets, n_ext, heap);

storage/innobase/row/row0upd.c

 /*****************************************************************************
 
-Copyright (c) 1996, 2011, Oracle and/or its affiliates. All Rights Reserved.
+Copyright (c) 1996, 2010, Innobase Oy. All Rights Reserved.
 
 This program is free software; you can redistribute it and/or modify it under
 the terms of the GNU General Public License as published by the Free Software
@@ -1999,46 +1999,28 @@ row_upd_clust_rec(
 	ut_ad(!rec_get_deleted_flag(btr_pcur_get_rec(pcur),
 				    dict_table_is_comp(index->table)));
 
-	err = btr_cur_pessimistic_update(
-		BTR_NO_LOCKING_FLAG | BTR_KEEP_POS_FLAG, btr_cur,
-		&heap, &big_rec, node->update, node->cmpl_info, thr, mtr);
-	if (big_rec) {
+	err = btr_cur_pessimistic_update(BTR_NO_LOCKING_FLAG, btr_cur,
+					 &heap, &big_rec, node->update,
+					 node->cmpl_info, thr, mtr);
+	mtr_commit(mtr);
+
+	if (err == DB_SUCCESS && big_rec) {
 		ulint		offsets_[REC_OFFS_NORMAL_SIZE];
 		rec_t*		rec;
 		rec_offs_init(offsets_);
 
-		ut_a(err == DB_SUCCESS);
-		/* Write out the externally stored columns, but
-		allocate the pages and write the pointers using the
-		mini-transaction of the record update. If any pages
-		were freed in the update, temporarily mark them
-		allocated so that off-page columns will not overwrite
-		them. We must do this, because we write the redo log
-		for the BLOB writes before writing the redo log for
-		the record update. */
-
-		btr_mark_freed_leaves(index, mtr, TRUE);
+		mtr_start(mtr);
+
+		ut_a(btr_pcur_restore_position(BTR_MODIFY_TREE, pcur, mtr));
 		rec = btr_cur_get_rec(btr_cur);
 		err = btr_store_big_rec_extern_fields(
 			index, btr_cur_get_block(btr_cur), rec,
 			rec_get_offsets(rec, index, offsets_,
 					ULINT_UNDEFINED, &heap),
-			big_rec, mtr, TRUE, mtr);
-		/* If writing big_rec fails (for example, because of
-		DB_OUT_OF_FILE_SPACE), the record will be corrupted.
-		Even if we did not update any externally stored
-		columns, our update could cause the record to grow so
-		that a non-updated column was selected for external
-		storage. This non-update would not have been written
-		to the undo log, and thus the record cannot be rolled
-		back. */
-		ut_a(err == DB_SUCCESS);
-		/* Free the pages again in order to avoid a leak. */
-		btr_mark_freed_leaves(index, mtr, FALSE);
+			mtr, TRUE, big_rec);
+		mtr_commit(mtr);
 	}
 
-	mtr_commit(mtr);
-
 	if (UNIV_LIKELY_NULL(heap)) {
 		mem_heap_free(heap);
 	}

storage/innobase/row/row0vers.c

@@ -550,10 +550,10 @@ row_vers_build_for_consistent_read(
 				/* The view already sees this version: we can
 				copy it to in_heap and return */
 
-#if defined UNIV_DEBUG || defined UNIV_BLOB_LIGHT_DEBUG
+#ifdef UNIV_BLOB_NULL_DEBUG
 				ut_a(!rec_offs_any_null_extern(
 					     version, *offsets));
-#endif /* UNIV_DEBUG || UNIV_BLOB_LIGHT_DEBUG */
+#endif /* UNIV_BLOB_NULL_DEBUG */
 
 				buf = mem_heap_alloc(in_heap,
 						     rec_offs_size(*offsets));
@@ -588,9 +588,9 @@ row_vers_build_for_consistent_read(
 		*offsets = rec_get_offsets(prev_version, index, *offsets,
 					   ULINT_UNDEFINED, offset_heap);
 
-#if defined UNIV_DEBUG || defined UNIV_BLOB_LIGHT_DEBUG
+#ifdef UNIV_BLOB_NULL_DEBUG
 		ut_a(!rec_offs_any_null_extern(prev_version, *offsets));
-#endif /* UNIV_DEBUG || UNIV_BLOB_LIGHT_DEBUG */
+#endif /* UNIV_BLOB_NULL_DEBUG */
 
 		trx_id = row_get_rec_trx_id(prev_version, index, *offsets);
 
@@ -691,9 +691,9 @@ row_vers_build_for_semi_consistent_read(
 			/* We found a version that belongs to a
 			committed transaction: return it. */
 
-#if defined UNIV_DEBUG || defined UNIV_BLOB_LIGHT_DEBUG
+#ifdef UNIV_BLOB_NULL_DEBUG
 			ut_a(!rec_offs_any_null_extern(version, *offsets));
-#endif /* UNIV_DEBUG || UNIV_BLOB_LIGHT_DEBUG */
+#endif /* UNIV_BLOB_NULL_DEBUG */
 
 			if (rec == version) {
 				*old_vers = rec;
@@ -752,9 +752,9 @@ row_vers_build_for_semi_consistent_read(
 		version = prev_version;
 		*offsets = rec_get_offsets(version, index, *offsets,
 					   ULINT_UNDEFINED, offset_heap);
-#if defined UNIV_DEBUG || defined UNIV_BLOB_LIGHT_DEBUG
+#ifdef UNIV_BLOB_NULL_DEBUG
 		ut_a(!rec_offs_any_null_extern(version, *offsets));
-#endif /* UNIV_DEBUG || UNIV_BLOB_LIGHT_DEBUG */
+#endif /* UNIV_BLOB_NULL_DEBUG */
 	}/* for (;;) */
 
 	if (heap) {

storage/innobase/sync/sync0rw.c

@@ -782,9 +782,7 @@ rw_lock_add_debug_info(
 	rw_lock_debug_mutex_exit();
 
 	if ((pass == 0) && (lock_type != RW_LOCK_WAIT_EX)) {
-		sync_thread_add_level(lock, lock->level,
-				      lock_type == RW_LOCK_EX
-				      && lock->lock_word < 0);
+		sync_thread_add_level(lock, lock->level);
 	}
 }
 

storage/innobase/sync/sync0sync.c

 /*****************************************************************************
 
-Copyright (c) 1995, 2011, Oracle and/or its affiliates. All Rights Reserved.
+Copyright (c) 1995, 2011, Innobase Oy. All Rights Reserved.
 Copyright (c) 2008, Google Inc.
 
 Portions of this file contain modifications contributed and copyrighted by
@@ -690,7 +690,7 @@ mutex_set_debug_info(
 	ut_ad(mutex);
 	ut_ad(file_name);
 
-	sync_thread_add_level(mutex, mutex->level, FALSE);
+	sync_thread_add_level(mutex, mutex->level);
 
 	mutex->file_name = file_name;
 	mutex->line	 = line;
@@ -1133,9 +1133,8 @@ void
 sync_thread_add_level(
 /*==================*/
 	void*	latch,	/*!< in: pointer to a mutex or an rw-lock */
-	ulint	level,	/*!< in: level in the latching order; if
+	ulint	level)	/*!< in: level in the latching order; if
 			SYNC_LEVEL_VARYING, nothing is done */
-	ibool	relock)	/*!< in: TRUE if re-entering an x-lock */
 {
 	ulint		i;
 	sync_level_t*	slot;
@@ -1186,10 +1185,6 @@ sync_thread_add_level(
 
 	array = thread_slot->levels;
 
-	if (relock) {
-		goto levels_ok;
-	}
-
 	/* NOTE that there is a problem with _NODE and _LEAF levels: if the
 	B-tree height changes, then a leaf can change to an internal node
 	or the other way around. We do not know at present if this can cause
@@ -1366,7 +1361,6 @@ sync_thread_add_level(
 		ut_error;
 	}
 
-levels_ok:
 	if (array->next_free == ULINT_UNDEFINED) {
 		ut_a(array->n_elems < array->max_elems);
 

storage/innobase/trx/trx0rec.c

@@ -1621,9 +1621,9 @@ trx_undo_prev_version_build(
 		return(DB_ERROR);
 	}
 
-# if defined UNIV_DEBUG || defined UNIV_BLOB_LIGHT_DEBUG
+# ifdef UNIV_BLOB_NULL_DEBUG
 	ut_a(!rec_offs_any_null_extern(rec, offsets));
-# endif /* UNIV_DEBUG || UNIV_BLOB_LIGHT_DEBUG */
+# endif /* UNIV_BLOB_NULL_DEBUG */
 
 	if (row_upd_changes_field_size_or_external(index, offsets, update)) {
 		ulint	n_ext;

storage/innobase/trx/trx0undo.c

 /*****************************************************************************
 
-Copyright (c) 1996, 2011, Oracle and/or its affiliates. All Rights Reserved.
+Copyright (c) 1996, 2009, Innobase Oy. All Rights Reserved.
 
 This program is free software; you can redistribute it and/or modify it under
 the terms of the GNU General Public License as published by the Free Software
@@ -918,7 +918,7 @@ trx_undo_add_page(
 	page_no = fseg_alloc_free_page_general(header_page + TRX_UNDO_SEG_HDR
 					       + TRX_UNDO_FSEG_HEADER,
 					       undo->top_page_no + 1, FSP_UP,
-					       TRUE, mtr, mtr);
+					       TRUE, mtr);
 
 	fil_space_release_free_extents(undo->space, n_reserved);