linux/drivers/md/dm-cache-block-types.h

/* SPDX-License-Identifier: GPL-2.0-only */
/*
 * Copyright (C) 2012 Red Hat, Inc.
 *
 * This file is released under the GPL.
 */

#ifndef DM_CACHE_BLOCK_TYPES_H
#define DM_CACHE_BLOCK_TYPES_H

#include "persistent-data/dm-block-manager.h"

/*----------------------------------------------------------------*/

/*
 * It's helpful to get sparse to differentiate between indexes into the
 * origin device, indexes into the cache device, and indexes into the
 * discard bitset.
 */

dm_oblock_t;
dm_cblock_t;
dm_dblock_t;

static inline dm_oblock_t to_oblock(dm_block_t b)
{ … }

static inline dm_block_t from_oblock(dm_oblock_t b)
{ … }

static inline dm_cblock_t to_cblock(uint32_t b)
{ … }

static inline uint32_t from_cblock(dm_cblock_t b)
{ … }

static inline dm_dblock_t to_dblock(dm_block_t b)
{ … }

static inline dm_block_t from_dblock(dm_dblock_t b)
{ … }

#endif /* DM_CACHE_BLOCK_TYPES_H */