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1// SPDX-License-Identifier: GPL-2.02/*3 * Copyright (c) 2000,2005 Silicon Graphics, Inc.4 * All Rights Reserved.5 */6#ifndef __XFS_IALLOC_BTREE_H__7#define __XFS_IALLOC_BTREE_H__8 9/*10 * Inode map on-disk structures11 */12 13struct xfs_buf;14struct xfs_btree_cur;15struct xfs_mount;16struct xfs_perag;17 18/*19 * Btree block header size depends on a superblock flag.20 */21#define XFS_INOBT_BLOCK_LEN(mp) \22 (xfs_has_crc(((mp))) ? \23 XFS_BTREE_SBLOCK_CRC_LEN : XFS_BTREE_SBLOCK_LEN)24 25/*26 * Record, key, and pointer address macros for btree blocks.27 *28 * (note that some of these may appear unused, but they are used in userspace)29 */30#define XFS_INOBT_REC_ADDR(mp, block, index) \31 ((xfs_inobt_rec_t *) \32 ((char *)(block) + \33 XFS_INOBT_BLOCK_LEN(mp) + \34 (((index) - 1) * sizeof(xfs_inobt_rec_t))))35 36#define XFS_INOBT_KEY_ADDR(mp, block, index) \37 ((xfs_inobt_key_t *) \38 ((char *)(block) + \39 XFS_INOBT_BLOCK_LEN(mp) + \40 ((index) - 1) * sizeof(xfs_inobt_key_t)))41 42#define XFS_INOBT_PTR_ADDR(mp, block, index, maxrecs) \43 ((xfs_inobt_ptr_t *) \44 ((char *)(block) + \45 XFS_INOBT_BLOCK_LEN(mp) + \46 (maxrecs) * sizeof(xfs_inobt_key_t) + \47 ((index) - 1) * sizeof(xfs_inobt_ptr_t)))48 49struct xfs_btree_cur *xfs_inobt_init_cursor(struct xfs_perag *pag,50 struct xfs_trans *tp, struct xfs_buf *agbp);51struct xfs_btree_cur *xfs_finobt_init_cursor(struct xfs_perag *pag,52 struct xfs_trans *tp, struct xfs_buf *agbp);53unsigned int xfs_inobt_maxrecs(struct xfs_mount *mp, unsigned int blocklen,54 bool leaf);55 56/* ir_holemask to inode allocation bitmap conversion */57uint64_t xfs_inobt_irec_to_allocmask(const struct xfs_inobt_rec_incore *irec);58 59#if defined(DEBUG) || defined(XFS_WARN)60int xfs_inobt_rec_check_count(struct xfs_mount *,61 struct xfs_inobt_rec_incore *);62#else63#define xfs_inobt_rec_check_count(mp, rec) 064#endif /* DEBUG */65 66int xfs_finobt_calc_reserves(struct xfs_perag *perag, struct xfs_trans *tp,67 xfs_extlen_t *ask, xfs_extlen_t *used);68extern xfs_extlen_t xfs_iallocbt_calc_size(struct xfs_mount *mp,69 unsigned long long len);70 71void xfs_inobt_commit_staged_btree(struct xfs_btree_cur *cur,72 struct xfs_trans *tp, struct xfs_buf *agbp);73 74unsigned int xfs_iallocbt_maxlevels_ondisk(void);75 76int __init xfs_inobt_init_cur_cache(void);77void xfs_inobt_destroy_cur_cache(void);78 79#endif /* __XFS_IALLOC_BTREE_H__ */80