/*

 * 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 */