/*
* Copyright (c) 2020 Red Hat, Inc.
*
* 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; either version 2
* of the License, or (at your option) any later version.
*
* 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 Street, Fifth Floor, Boston, MA
* 02110-1301, USA.
*
* $Id: //eng/vdo-releases/aluminum/src/c++/vdo/base/vdoResize.h#1 $
*/
#ifndef VDO_RESIZE_H
#define VDO_RESIZE_H
#include "types.h"
/**
* Make the completion for an asynchronous resize.
*
* @param vdo The VDO
* @param newPhysicalBlocks The new physical size in blocks
* @param completionPtr A pointer to hold the completion
*
* @return VDO_SUCCESS or an error
**/
int makeResizeVDOCompletion(VDO *vdo,
BlockCount newPhysicalBlocks,
VDOCompletion **completionPtr)
__attribute__((warn_unused_result));
/**
* Free the completion for an asynchronous resize, and NULL out the
* reference to it.
*
* @param completionPtr A reference to the completion to free
**/
void freeResizeVDOCompletion(VDOCompletion **completionPtr);
/**
* Grow the physical size of the VDO. This method may only be called when the
* VDO has been suspended and must not be called from a base thread.
*
* @param vdo The VDO to resize
* @param newPhysicalBlocks The new physical size in blocks
*
* @return VDO_SUCCESS or an error
**/
int performGrowPhysical(VDO *vdo, BlockCount newPhysicalBlocks);
/**
* Prepare to resize the VDO, allocating memory as needed.
*
* @param vdo The VDO
* @param newPhysicalBlocks The new physical size in blocks
**/
int prepareToGrowPhysical(VDO *vdo, BlockCount newPhysicalBlocks)
__attribute__((warn_unused_result));
#endif /* VDO_RESIZE_H */