Proposed by MySQL, and approved by Marko.

This was reported as Issue #381.

buf_page_set_old(): Assert that blocks may only be set old if
buf_pool->LRU_old is initialized and buf_pool->LRU_old_len is nonzero.
Assert that buf_pool->LRU_old points to the block at the old/new boundary.

buf_LRU_old_adjust_len(): Invoke buf_page_set_old() after adjusting
buf_pool->LRU_old and buf_pool->LRU_old_len, in order not to violate
the added assertions.

buf_LRU_old_init(): Replace buf_page_set_old() with a direct
assignment to bpage->old, because these loops that initialize all the
blocks would temporarily violate the assertions about
buf_pool->LRU_old.

buf_LRU_remove_block(): When setting buf_pool->LRU_old = NULL, also
clear all bpage->old flags and set buf_pool->LRU_old_len = 0.

buf_LRU_add_block_to_end_low(), buf_LRU_add_block_low(): Move the
buf_page_set_old() call later in order not to violate the debug
assertions.  If buf_pool->LRU_old is NULL, set old=FALSE.

buf_LRU_free_block(): Replace the UNIV_LRU_DEBUG assertion with a
dummy buf_page_set_old() call that performs more thorough checks.

buf_LRU_validate(): Do not tolerate garbage in buf_pool->LRU_old_len
even if buf_pool->LRU_old is NULL.  Check that bpage->old is monotonic.

buf_relocate(): Make the UNIV_LRU_DEBUG checks stricter.

buf0buf.h: Revise the documentation of buf_page_t::old and
buf_pool_t::LRU_old_len.

Use $(srcdir)/include instead of $(top_srcdir)/storage/innobase/include.

the shared memory, reset memory pointer ptr to NULL, and
 allocate memory from conventional pool.
Bug #48237 Error handling in os_mem_alloc_large appears to be incorrect
rb://198  Approved by: Marko

The change does not affect regular InnoDB engine. Confirmed by
Marko.

in order to catch the buf_pool->LRU_old corruption reported in Issue #381.

buf_LRU_old_init(): Set the property from the tail towards the front
of the buf_pool->LRU list, in order not to trip the debug check.

----
    branches/6.0: innobase_start_or_create_for_mysql(): Make the 10 MB
    minimum tablespace limit independent of UNIV_PAGE_SIZE. (Bug #41490)

DB_TRX_ID, DB_ROLL_PTR and DB_ROW_ID, in order to avoid harmless
Valgrind warnings about uninitialized data.  (The warnings were
harmless, because the fields would be initialized at a later stage.)

to WARN_LEVEL_WARN change. This is the same result as 
submitted in rb://172 review, which approved by Sunny Bains
and Marko.

be used for push_warning_* call any more. Switch to 
WARN_LEVEL_WARN. Bug #47233.
rb://172 approved by Sunny Bains and Marko.

branch. Due to different code path for creating index in zip
branch comparing to 5.1), the index reserved name check function
is extended to be used in ha_innobase::add_index(). 
rb://190  Approved by: Marko

Add ChangeLog entry for r6095.

Fix Bug#47808 innodb_information_schema.test fails when run under valgrind 

by using the wait_until_rows_count macro that loops until the number of
rows becomes 14 instead of sleep 0.1, which is obviously very fragile.

Add ChangeLog entry for r6080.

Fix Bug #47058 - Failure to compile innodb_plugin on solaris 10u7 + spro cc/CC 5.10

Call fsync() on datafiles after a batch of pages is written to disk
even when skip_innodb_doublewrite is set.

Approved by: Heikki

Changes from MySQL to fix build issue.

Fix compilation warning in Hot Backup:

innodb/fil/fil0fil.c: In function 'fil_load_single_table_tablespace':
innodb/fil/fil0fil.c:3253: warning: format '%lld' expects type 'long long int', but argument 6 has type 'ib_int64_t'

When scanning a directory readdir() is called and stat() after it,
if a file is deleted between the two calls stat will fail and the
whole precedure will fail. Change this behavior to continue with the
next entry if stat() fails because of nonexistent file. This is
transparent change as it will make it look as if the file was deleted
before the readdir() call.

This change is needed in order to fix
https://svn.innodb.com/mantis/view.php?id=174
in which we need to abort if os_file_readdir_next_file()
encounters "real" errors.

Approved by:	Marko, Pekka (rb://177)

(issue#186). This functionality is moved to Hot Backup source tree.

Add os_file_is_same() function for Hot Backup (inside ifdef UNIV_HOTBACKUP).
This is part of the fix for Issue #186.
Note! The Windows implementation is incomplete.

Do not invalidate buffer pool while an LRU batch is active. Added
code to buf_pool_invalidate() to wait for the running batches to finish.

This patch also resets the state of buf_pool struct at invalidation. This
addresses the concern where buf_pool->freed_page_clock becomes non-zero
because we read in a system tablespace page for file format info at
startup.

Approved by: Marko

Reported as bug#47763.

When InnoDB crashes while dropping an index, ensure that
the index will be completely dropped during crash recovery.

row_merge_drop_index(): Before dropping an index, rename the index to
start with TEMP_INDEX_PREFIX_STR and commit the change, so that
row_merge_drop_temp_indexes() will drop the index after crash
recovery if the server crashes while dropping the index.

fseg_inode_try_get(): New function, forked from fseg_inode_get().
Return NULL if the file segment index node is free.

fseg_inode_get(): Assert that the file segment index node is not free.

fseg_free_step(): If the file segment index node is already free,
print a diagnostic message and return TRUE.

fsp_free_seg_inode(): Write a nonzero number to FSEG_MAGIC_N, so that
allocated-and-freed file segment index nodes can be better
distinguished from uninitialized ones.

This is rb://174, addressing Issue #348.

Tested by restarting mysqld upon the completion of the added
log_write_up_to() invocation below, during DROP INDEX.  The index was
dropped after crash recovery, and re-issuing the DROP INDEX did not
crash the server.

  Index: btr/btr0btr.c
  ===================================================================
  --- btr/btr0btr.c	(revision 6026)
  +++ btr/btr0btr.c	(working copy)
  @@ -42,6 +42,7 @@ Created 6/2/1994 Heikki Tuuri
   #include "ibuf0ibuf.h"
   #include "trx0trx.h"
  +#include "log0log.h"
   
   /*
   Latching strategy of the InnoDB B-tree
   --------------------------------------
  @@ -873,6 +874,8 @@ leaf_loop:
   
   		goto leaf_loop;
   	}
  +
  +	log_write_up_to(mtr.end_lsn, LOG_WAIT_ALL_GROUPS, TRUE);
   top_loop:
   	mtr_start(&mtr);

Fix typo.

Mantis Issue #347.  No modifications should be made to the database
while recv_apply_hashed_log_recs() is about to complete.

Fix the year, should be 2009.

Pointed by:	Calvin

Add ChangeLog entry for the release of 1.0.4.

ChangeLog: wrap around 78th column, not earlier.

is inconsistent with the MySQL .frm file.

ha_innobase::index_read(): When the index cannot be found,
return an error.

ha_innobase::change_active_index(): When prebuilt->index == NULL,
set also prebuilt->index_usable = FALSE.  This is not needed for
correctness, because prebuilt->index_usable is only checked by
row_search_for_mysql(), which requires prebuilt->index != NULL.

This addresses Issue #349.  Approved by Heikki Tuuri over IM.

lock_rec_queue_validate(), lock_rec_queue_validate(): Note that
this debug code may violate the latching order and cause deadlocks.

not even when restoring an uncompressed page after a compression failure.

btr_page_reorganize_low(): On compression failure, do not restore
those page header fields that should not be affected by the
reorganization.  Instead, compare the fields.

page_zip_decompress(): Add the parameter ibool all, for copying all
page header fields.  Pass the parameter all=TRUE on block read
completion, redo log application, and page_zip_validate(); pass
all=FALSE in all other cases.

page_zip_reorganize(): Do not restore the uncompressed page on
failure.  It will be restored (to pre-modification state) by the
caller anyway.

rb://167, Issue #346

InnoDB has crashed during table creation.  Also, refuse to start if
files with duplicate tablespace identifiers are encountered.

fil_node_create(): Update fil_system->max_assigned_id.  This should
prevent the reuse of a space->id when InnoDB does a full crash
recovery and invokes fil_load_single_table_tablespaces().  Normally,
fil_system->max_assigned_id is initialized from
SELECT MAX(ID) FROM SYS_TABLES.

fil_open_single_table_tablespace(): Return FALSE when
fil_space_create() fails.

fil_load_single_table_tablespace(): Exit if fil_space_create() fails
and innodb_force_recovery=0.

rb://173 approved by Heikki Tuuri.  This addresses Issue #335.

Add ChangeLog entry for c5988.

1453 (0x5AD) for InnoDB backend

When error ERROR_WORKING_SET_QUOTA or ERROR_NO_SYSTEM_RESOURCES
occurs, yields for 100ms and retries the operation.

Approved by: Heikki (on IM)

This preprocessor symbol has been recently introduced in MySQL 5.1.
The InnoDB Plugin should remain source compatible with MySQL 5.1.24
and later.

Simplify obfuscated pointer arithmetics.