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
13 #define BTRFS_RST_SUPP_BLOCK_GROUP_MASK (BTRFS_BLOCK_GROUP_DUP | \
14 BTRFS_BLOCK_GROUP_RAID1_MASK | \
15 BTRFS_BLOCK_GROUP_RAID0 | \
16 BTRFS_BLOCK_GROUP_RAID10)
17
18 struct btrfs_io_context;
19 struct btrfs_io_stripe;
20 struct btrfs_fs_info;
21 struct btrfs_ordered_extent;
22 struct btrfs_trans_handle;
23
24 int btrfs_delete_raid_extent(struct btrfs_trans_handle *trans, u64 start, u64 length);
25 int btrfs_get_raid_extent_offset(struct btrfs_fs_info *fs_info,
26 u64 logical, u64 *length, u64 map_type,
27 u32 stripe_index, struct btrfs_io_stripe *stripe);
28 int btrfs_insert_raid_extent(struct btrfs_trans_handle *trans,
29 struct btrfs_ordered_extent *ordered_extent);
30
31 static inline bool btrfs_need_stripe_tree_update(struct btrfs_fs_info *fs_info,
32 u64 map_type)
33 {
34 u64 type = map_type & BTRFS_BLOCK_GROUP_TYPE_MASK;
35 u64 profile = map_type & BTRFS_BLOCK_GROUP_PROFILE_MASK;
36
37 if (!btrfs_fs_incompat(fs_info, RAID_STRIPE_TREE))
38 return false;
39
40 if (type != BTRFS_BLOCK_GROUP_DATA)
41 return false;
42
43 if (profile & BTRFS_RST_SUPP_BLOCK_GROUP_MASK)
44 return true;
45
46 return false;
47 }
48
49 static inline int btrfs_num_raid_stripes(u32 item_size)
50 {
51 return item_size / sizeof(struct btrfs_raid_stride);
52 }
53
54 #endif
55
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