buf_LRU_block_free_non_file_page(): Deallocate block->page_zip.data
to avoid ut_a(!block->page_zip.data) in buf_chunk_free().

buf_chunk_free(): Add the assertion ut_a(!block->in_LRU_list).

buf_pool_resize(): When shrinking the buffer pool and there are
non-free blocks in the candidate chunk, free the clean blocks
and move the dirty blocks to the end of the LRU list and request a flush.
Proceed if the chunk becomes free, and retry otherwise.

buf_LRU_search_and_free_block().

mysql.patch: Patch to change or add variables to MySQL

innodb.patch: Patch to make the master thread poll requests to resize
the buffer pool.

Replace srv_pool_size and innobase_buffer_pool_size
with srv_buf_pool_size, srv_buf_pool_old_size,
and srv_buf_pool_curr_size.

Add buf_chunk_t, a collection of buf_block_t.

when assigning node->data.

ha_delete(), ha_search_and_delete_if_found(), ha_remove_all_nodes_to_page():
Remove the parameter buf_block_t* block, now that it is stored within the
hash data structure in debug builds.

an assertion failure in debug builds when a context switch occurred in
buf_LRU_search_and_free_block() before the call to
btr_search_drop_page_hash_index() managed to acquire the mutexes again.

ha_node_t: Add the field buf_block_t* block.

ha_search_and_update_if_found(): Rename to ha_search_and_update_if_found_func()
with added buf_block_t* parameter in debug builds.  Define the wrapper macro
ha_search_and_update_if_found() that always takes the buf_block_t* parameter.

ha_insert_for_fold(): Rename to ha_insert_for_fold_func()
with added buf_block_t* parameter in debug builds.  Define the wrapper macro
ha_insert_for_fold() that always takes the buf_block_t* parameter.

The bulk of the AWE support was removed in r976.

buf_LRU_block_remove_hashed_page(): Overwrite (space_id,page_no)
when freeing a buffer block.  This will help catching non-file
pages being passed to buf_block_align().

btr_search_guess_on_hash(), btr_search_validate(): Instead of
buf_block_align(), call buf_page_hash_get(), and allow it to return NULL.

with block->frame, because in btr_search_guess_on_hash(), it may
occur that block->buf_fix_count == 0.

calls buf_block_get_frame(block) with block->frame in order
to avoid debug assertions about block->buf_fix_count == 0.

On POSIX, use mmap() and munmap().  On Windows, use VirtualAlloc()
and VirtualFree().  Only on Netware, use ut_malloc_low() and ut_free().
The lower-level functions on POSIX and Windows allow InnoDB to return
memory to the operating system when the buffer pool is shrunk.

to allow the code to be built with UNIV_DEBUG but without UNIV_SYNC_DEBUG.

Instead, get buf_block_t* as a parameter.

Without this patch, buf_page_hash_get() would return NULL in
buf_block_align().  The function buf_LRU_search_and_free_block()
invokes buf_LRU_block_remove_hashed_page(), which removes the
hash mapping needed by buf_page_hash_get().

This was forgotten from r977.

debug assertions.  This was forgotten from r977.

buf_pool_t: Remove n_frames, max_size, and blocks_of_frames.
The current buffer pool size is in curr_size.

buf_pool_init(): Remove parameter max_size.

buf_pool_get_max_size(), buf_pool_is_block(): Remove.

buf_block_align(): Do not assume that the buffer pool is allocated
in one chunk.  Replace dependency on buf_pool->blocks_of_frames
with a call to buf_page_hash_get().

Removal of the variable innobase_buffer_pool_awe_mem_mb requires
coordination with MySQL AB.

Do not break the latching order in TRUNCATE TABLE.

dict_truncate_index_tree(): Replace parameter rec_t* rec with
btr_pcur_t* pcur.  Reposition pcur before calling btr_create().

sync_thread_add_level(): Remove the relaxation of the assertion added in r968.

The code was previously unused in non-debug builds.

btr_pcur_restore_position(): Add const qualifiers.

buf_LRU_block_remove_hashed_page(): Reduce the amount
of buf_page_hash_get() calls and add a UNIV_UNLIKELY hint
to an assertion-like test.

returns the compressed page size in kilobytes, not bytes.

about block->frame matching rec.

row_ins_check_foreign_constraint(): Pass the correct block to
the lock_ functions.

because the level of that page needs to be adjusted separately.

rec_get_nth_field_offs_old(): Split from rec_get_nth_field_old().

rec_get_nth_field_old(): Reimplement as a constness-preserving macro.

dict_drop_index_tree(), dict_truncate_index_tree(): Note that rec is
an in/out parameter, as the B-tree root page number will be updated.

page_get_page_no(page_align(field_ref)) calls with a local variable
rec_page_no = buf_block_get_page_no(rec_block).

#ifdef UNIV_BTR_DEBUG, as it depends on other #ifdef UNIV_BTR_DEBUG code.

Implement dict_index_get_if_in_cache_low() correctly.
Restore the function dict_index_get_if_in_cache() #ifdef UNIV_DEBUG.

buf0lru.c: Always #include "srv0srv.h"

buf_block_get_lock_mutex(), buf_frame_get_lock_mutex(): Remove.

mtr0log.ic: Remove #include "page0page.h" and replace the page_
functions with lower-level ones to break an #include cycle.

dict0dict.ic: Remove unnecessary #include "trx0undo.h" and "trx0sys.h"
that would create an #include cycle.

btr_check_node_ptr(): Replace page_t* parameter with buf_block_t*.

btr_free_externally_stored_field(): Add const qualifier to rec.
Remove an explicit buf_block_align() call, but replace an
mtr_memo_contains() with mtr_memo_contains_page().

row_upd_rec_sys_fields(): Reorder an assertion containing buf_block_align()
so that the costly call can be avoided in some cases.

with rec_t** current_rec.  Reposition *current_rec after calling
page_zip_reorganize().

from the adaptive hash index [btr_search_guess_on_hash() and
btr_search_validate()].  Some references to buf_block_align() remain
in debug builds.

btr_store_big_rec_extern_fields(): Add the parameter rec_block.

page_rec_get_next_low(): Do not assume that the page has been
allocated from the buffer pool when printing the diagnostic information.

page_cur_insert_rec_low(): Replace the parameter page_zip_des_t* page_zip
with the parameter buf_block_t* block.

Compare heap_no against PAGE_HEAP_NO_SUPREMUM instead of
PAGE_NEW_SUPREMUM or PAGE_OLD_SUPREMUM.

Return NULL when trying to use heap->free_block that is NULL.