0545e9dc6d
commit d1edce71135cc6d98c0a4b5729774542b676e769 Author: sophgo-forum-service <forum_service@sophgo.com> Date: Fri Mar 15 16:07:33 2024 +0800 [fix] recommend using ssh method to clone repo. [fix] fix sensor driver repo branch name.
45 lines
1.1 KiB
C
45 lines
1.1 KiB
C
/*
|
|
* Copyright (C) 2011 Red Hat, Inc.
|
|
*
|
|
* This file is released under the GPL.
|
|
*/
|
|
|
|
#ifndef DM_SPACE_MAP_METADATA_H
|
|
#define DM_SPACE_MAP_METADATA_H
|
|
|
|
#include "dm-transaction-manager.h"
|
|
|
|
#define DM_SM_METADATA_BLOCK_SIZE (4096 >> SECTOR_SHIFT)
|
|
|
|
/*
|
|
* The metadata device is currently limited in size.
|
|
*
|
|
* We have one block of index, which can hold 255 index entries. Each
|
|
* index entry contains allocation info about ~16k metadata blocks.
|
|
*/
|
|
#define DM_SM_METADATA_MAX_BLOCKS (255 * ((1 << 14) - 64))
|
|
#define DM_SM_METADATA_MAX_SECTORS (DM_SM_METADATA_MAX_BLOCKS * DM_SM_METADATA_BLOCK_SIZE)
|
|
|
|
/*
|
|
* Unfortunately we have to use two-phase construction due to the cycle
|
|
* between the tm and sm.
|
|
*/
|
|
struct dm_space_map *dm_sm_metadata_init(void);
|
|
|
|
/*
|
|
* Create a fresh space map.
|
|
*/
|
|
int dm_sm_metadata_create(struct dm_space_map *sm,
|
|
struct dm_transaction_manager *tm,
|
|
dm_block_t nr_blocks,
|
|
dm_block_t superblock);
|
|
|
|
/*
|
|
* Open from a previously-recorded root.
|
|
*/
|
|
int dm_sm_metadata_open(struct dm_space_map *sm,
|
|
struct dm_transaction_manager *tm,
|
|
void *root_le, size_t len);
|
|
|
|
#endif /* DM_SPACE_MAP_METADATA_H */
|