diff options
Diffstat (limited to 'storage/innodb_plugin/include/log0log.h')
| -rw-r--r-- | storage/innodb_plugin/include/log0log.h | 31 |
1 files changed, 12 insertions, 19 deletions
diff --git a/storage/innodb_plugin/include/log0log.h b/storage/innodb_plugin/include/log0log.h index 135aeb69e2d..8fce4ef96bc 100644 --- a/storage/innodb_plugin/include/log0log.h +++ b/storage/innodb_plugin/include/log0log.h @@ -1,23 +1,6 @@ /***************************************************************************** -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 -Foundation; version 2 of the License. - -This program is distributed in the hope that it will be useful, but WITHOUT -ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or FITNESS -FOR A PARTICULAR PURPOSE. See the GNU General Public License for more details. - -You should have received a copy of the GNU General Public License along with -this program; if not, write to the Free Software Foundation, Inc., 59 Temple -Place, Suite 330, Boston, MA 02111-1307 USA - -*****************************************************************************/ -/***************************************************************************** - -Copyright (c) 1995, 2009, Innobase Oy. All Rights Reserved. +Copyright (c) 1995, 2010, Innobase Oy. All Rights Reserved. Copyright (c) 2009, Google Inc. Portions of this file contain modifications contributed and copyrighted by @@ -825,7 +808,17 @@ struct log_struct{ written to some log group; for this to be advanced, it is enough that the write i/o has been completed for all - log groups */ + log groups. + Note that since InnoDB currently + has only one log group therefore + this value is redundant. Also it + is possible that this value + falls behind the + flushed_to_disk_lsn transiently. + It is appropriate to use either + flushed_to_disk_lsn or + write_lsn which are always + up-to-date and accurate. */ ib_uint64_t write_lsn; /*!< end lsn for the current running write */ ulint write_end_offset;/*!< the data in buffer has |