forked from mirrors/linux
2422547e99
Remove the encoding field from 'struct btrfs_stripe_extent'. It was originally intended to encode the RAID type as well as if we're a data or a parity stripe. But the RAID type can be inferred form the block-group and the data vs. parity differentiation can be done easier with adding a new key type for parity stripes in the RAID stripe tree. Signed-off-by: Johannes Thumshirn <johannes.thumshirn@wdc.com> Signed-off-by: David Sterba <dsterba@suse.com>
54 lines
1.5 KiB
C
54 lines
1.5 KiB
C
/* SPDX-License-Identifier: GPL-2.0 */
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/*
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* Copyright (C) 2023 Western Digital Corporation or its affiliates.
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*/
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#ifndef BTRFS_RAID_STRIPE_TREE_H
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#define BTRFS_RAID_STRIPE_TREE_H
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#include <linux/types.h>
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#include <uapi/linux/btrfs_tree.h>
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#include "fs.h"
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#define BTRFS_RST_SUPP_BLOCK_GROUP_MASK (BTRFS_BLOCK_GROUP_DUP | \
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BTRFS_BLOCK_GROUP_RAID1_MASK | \
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BTRFS_BLOCK_GROUP_RAID0 | \
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BTRFS_BLOCK_GROUP_RAID10)
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struct btrfs_io_context;
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struct btrfs_io_stripe;
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struct btrfs_fs_info;
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struct btrfs_ordered_extent;
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struct btrfs_trans_handle;
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int btrfs_delete_raid_extent(struct btrfs_trans_handle *trans, u64 start, u64 length);
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int btrfs_get_raid_extent_offset(struct btrfs_fs_info *fs_info,
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u64 logical, u64 *length, u64 map_type,
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u32 stripe_index, struct btrfs_io_stripe *stripe);
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int btrfs_insert_raid_extent(struct btrfs_trans_handle *trans,
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struct btrfs_ordered_extent *ordered_extent);
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static inline bool btrfs_need_stripe_tree_update(struct btrfs_fs_info *fs_info,
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u64 map_type)
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{
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u64 type = map_type & BTRFS_BLOCK_GROUP_TYPE_MASK;
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u64 profile = map_type & BTRFS_BLOCK_GROUP_PROFILE_MASK;
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if (!btrfs_fs_incompat(fs_info, RAID_STRIPE_TREE))
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return false;
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if (type != BTRFS_BLOCK_GROUP_DATA)
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return false;
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if (profile & BTRFS_RST_SUPP_BLOCK_GROUP_MASK)
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return true;
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return false;
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}
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static inline int btrfs_num_raid_stripes(u32 item_size)
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{
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return item_size / sizeof(struct btrfs_raid_stride);
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}
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#endif
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