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/* SPDX-License-Identifier: GPL-2.0 */
/*
* Copyright (C) 2021 Oracle. All Rights Reserved.
* Author: Darrick J. Wong <djwong@kernel.org>
*/
#ifndef XFS_SCRUB_XFBTREE_H__
#define XFS_SCRUB_XFBTREE_H__
/* Root block for an in-memory btree. */
struct xfs_btree_mem_head {
__be32 mh_magic;
__be32 mh_nlevels;
__be64 mh_root;
};
#define XFS_BTREE_MEM_HEAD_MAGIC 0x4341544D /* "CATM" */
/* in-memory btree header is always block 0 in the backing store */
#define XFS_BTREE_MEM_HEAD_DADDR 0
int xfs_btree_mem_head_read_buf(struct xfs_buftarg *btp, struct xfs_trans *tp,
struct xfs_buf **head_bpp);
/* xfile-backed in-memory btrees */
struct xfbtree {
struct xfs_buftarg *target;
struct xfile *xfile;
struct xbitmap *freespace;
};
/* in-memory btrees are always created with an empty leaf block at block 1 */
#define XFBTREE_NEW_LEAF_FILEOFF 1
void xfbtree_destroy(struct xfbtree *xfbt);
int xfbtree_trans_commit(struct xfbtree *xfbt, struct xfs_trans *tp);
void xfbtree_trans_cancel(struct xfbtree *xfbt, struct xfs_trans *tp);
#endif /* XFS_SCRUB_XFBTREE_H__ */
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