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/*****************************************************************************
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.,
51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA
*****************************************************************************/
/**************************************************//**
@file include/fsp0fsp.ic
File space management
Created 12/18/1995 Heikki Tuuri
*******************************************************/
/***********************************************************************//**
Checks if a page address is an extent descriptor page address.
@return TRUE if a descriptor page */
UNIV_INLINE
ibool
fsp_descr_page(
/*===========*/
ulint zip_size,/*!< in: compressed page size in bytes;
0 for uncompressed pages */
ulint page_no)/*!< in: page number */
{
ut_ad(ut_is_2pow(zip_size));
if (!zip_size) {
return(UNIV_UNLIKELY((page_no & (UNIV_PAGE_SIZE - 1))
== FSP_XDES_OFFSET));
}
return(UNIV_UNLIKELY((page_no & (zip_size - 1)) == FSP_XDES_OFFSET));
}
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