1/* SPDX-License-Identifier: GPL-2.0 */
2/*
3 * Copyright (C) 2023 Western Digital Corporation or its affiliates.
4 */
5
6#ifndef BTRFS_RAID_STRIPE_TREE_H
7#define BTRFS_RAID_STRIPE_TREE_H
8
9#include <linux/types.h>
10#include <uapi/linux/btrfs_tree.h>
11#include "fs.h"
12#include "accessors.h"
13
14#define BTRFS_RST_SUPP_BLOCK_GROUP_MASK (BTRFS_BLOCK_GROUP_DUP | \
15 BTRFS_BLOCK_GROUP_RAID1_MASK | \
16 BTRFS_BLOCK_GROUP_RAID0 | \
17 BTRFS_BLOCK_GROUP_RAID10)
18
19struct btrfs_io_context;
20struct btrfs_io_stripe;
21struct btrfs_fs_info;
22struct btrfs_ordered_extent;
23struct btrfs_trans_handle;
24
25int btrfs_delete_raid_extent(struct btrfs_trans_handle *trans, u64 start, u64 length);
26int btrfs_get_raid_extent_offset(struct btrfs_fs_info *fs_info,
27 u64 logical, u64 *length, u64 map_type,
28 u32 stripe_index, struct btrfs_io_stripe *stripe);
29int btrfs_insert_raid_extent(struct btrfs_trans_handle *trans,
30 struct btrfs_ordered_extent *ordered_extent);
31
32#ifdef CONFIG_BTRFS_FS_RUN_SANITY_TESTS
33int btrfs_insert_one_raid_extent(struct btrfs_trans_handle *trans,
34 struct btrfs_io_context *bioc);
35#endif
36
37static inline bool btrfs_need_stripe_tree_update(struct btrfs_fs_info *fs_info,
38 u64 map_type)
39{
40 u64 type = map_type & BTRFS_BLOCK_GROUP_TYPE_MASK;
41 u64 profile = map_type & BTRFS_BLOCK_GROUP_PROFILE_MASK;
42
43 if (!btrfs_fs_incompat(fs_info, RAID_STRIPE_TREE))
44 return false;
45
46 if (type != BTRFS_BLOCK_GROUP_DATA)
47 return false;
48
49 if (profile & BTRFS_RST_SUPP_BLOCK_GROUP_MASK)
50 return true;
51
52 return false;
53}
54
55static inline int btrfs_num_raid_stripes(u32 item_size)
56{
57 return item_size / sizeof(struct btrfs_raid_stride);
58}
59
60#endif
61

source code of linux/fs/btrfs/raid-stripe-tree.h