dict_truncate_index_tree(): Add the parameter space for specifying the
new tablespace identifier of a single-table tablespace that has been
recreated. When SYS_INDEXES.PAGE_NO == FIL_NULL, do not abort but
create the index tree.
fil_discard_tablespace(): Pass the return code from fil_delete_tablespace().
row_truncate_table_for_mysql(): Attempt to discard and recreate
single-table tablespaces. Reassign the tablespace identifier both in
the data dictionary (SYS_TABLES and SYS_INDEXES) and in the data
dictionary cache.
buf_page_get_gen(). This saves one mutex operation per block request.
buf_page_get_gen(), various macros and functions: Add parameter zip_size.
btr_node_ptr_get_child(): Add parameter index.
fil_space_get_latch(): Add optional output parameter zip_size.
fil_space_get_zip_size(): Return 0 for space id==0, because the
system tablespace is never compressed.
fsp_header_init(): Remove the parameter zip_size.
ibuf_free_excess_pages(): Remove the parameter zip_size.
trx_rseg_t, trx_undo_t: Add field zip_size.
xdes_lst_get_next(): Remove, unused.
Add m_nonempty for facilitating the test in page_zip_alloc(). This
reduces the combined size of the bit-fields to 32 bits. Thus,
sizeof(page_zip_des_t) == 2 machine words on 32-bit and wider systems.
decompression from page_zip_des_t to buf_page_t, because the fields
needed in compression are modified without holding the block mutex.
All writes to bit-fields sharing a machine word must be protected
by the same mutex or rw-lock.
storage size from 16 to 3 bits.
page_zip_get_size(), page_zip_set_size(): New functions.
Replace direct references to page_zip_des_t:size with calls to
buf_block_get_zip_size(), page_zip_get_size(), and page_zip_set_size().
and uncompressed buffer pool pages.
buf_block_t: Replace page_zip, space, and offset with buf_page_t page.
Replace some integers with bit-fields.
enum buf_block_state: Rename to buf_page_state. Add BUF_BLOCK_ZIP_PAGE.
page_zip_des_t: Add the field "state". Make the integer fields bit-fields.
page_zip_copy(): Document which fields are copied.
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().
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.
buf_flush_init_for_writing(): Remove parameters space, page_no.
fsp_init_file_page_low(): Wriet space_id and page_no to the page.
fil_create_new_single_table_tablespace(): Write space_id to the page.
dict_load_foreigns(): Enclose in #ifndef UNIV_HOTBACKUP.
fil_extend_tablespaces_to_stored_len(): Pass zip_size to fil_read().
buf_page_init_for_backup_restore(): Add parameter zip_size.
Enclose the declaration in buf0buf.h in #ifdef UNIV_HOTBACKUP.
recv_apply_log_recs_for_backup(): Replace the local variable "page"
with the local variable "block". Add local variable zip_size.
fil_read(), fil_write(): Make these inlined functions in fil0fil.c.
fil_write_lsn_and_arch_no_to_file(): Remove the parameter space_id and
note that this function is to be called on the system tablespace, which
is uncompressed.
mlog_parse_string(): Remove an off-by-one error in an assertion.
fil_extend_space_to_desired_size(): fsp_header_get_free_limit(),
fsp_try_extend_data_file(): Replace UNIV_PAGE_SIZE with the actual page size.
PAGE_ZIP_MIN_SIZE: New constant, to be used in assertions.
FSP_SEG_INODES_PER_PAGE: Add parameter zip_size.
fsp_seg_inode_page_get_nth_inode(), fsp_seg_inode_page_find_used(),
fsp_seg_inode_page_find_free(): Add parameter zip_size.
a few places accordingly.
os_aio_simulated_handle(): Add TODO comments about skipping the write
checks for compressed pages.
dict_create_sys_tables_tuple(): Write the compressed page size to
the TYPE column.
open_or_create_data_files(): Simplify the fil_node_create() call.
fil_node_create(): Do not touch space->zip_size. It was already initialized
by fil_space_create().
fil_reset_too_high_lsns(), buf_flush_buffered_writes(): Add TODO comment
about compressed pages.
buf_flush_init_for_writing(): Handle pages of type FIL_PAGE_INODE,
FIL_PAGE_IBUF_BITMAP, and FIL_PAGE_TYPE_FSP_HDR as uncompressed ones.
and to the file space header (FSP_PAGE_ZIP_SIZE, renamed from
FSP_LOWEST_NO_WRITE).
fil_space_struct: Add zip_size.
dict_table_struct: Embed zip_size in flags.
dict_table_zip_size(): Infer zip_size from table->flags.
dict_sys_tables_get_zip_size(): Read zip_size from SYS_TABLES.TYPE.
fil_space_get_zip_size(): Read zip_size from the file space header.
Add the redo log entry type MLOG_ZIP_FILE_CREATE.
btr_create(): page_zip_compress() returns FALSE on failure.
page_zip_write_header(): Write to page_zip->data[] instead of page_zip[].
buf_flush_init_for_writing(): Add parameter page_zip and set the fields
also in the header of the compressed page.
btr_cur_search_to_nth_level(): Add ut_ad() on page_zip_validate().
