mirror of https://gitee.com/openkylin/linux.git
69 lines
1.9 KiB
C
69 lines
1.9 KiB
C
// SPDX-License-Identifier: GPL-2.0
|
|
/*
|
|
* Copyright (c) 2000,2005 Silicon Graphics, Inc.
|
|
* All Rights Reserved.
|
|
*/
|
|
#ifndef __XFS_IALLOC_BTREE_H__
|
|
#define __XFS_IALLOC_BTREE_H__
|
|
|
|
/*
|
|
* Inode map on-disk structures
|
|
*/
|
|
|
|
struct xfs_buf;
|
|
struct xfs_btree_cur;
|
|
struct xfs_mount;
|
|
|
|
/*
|
|
* Btree block header size depends on a superblock flag.
|
|
*/
|
|
#define XFS_INOBT_BLOCK_LEN(mp) \
|
|
(xfs_sb_version_hascrc(&((mp)->m_sb)) ? \
|
|
XFS_BTREE_SBLOCK_CRC_LEN : XFS_BTREE_SBLOCK_LEN)
|
|
|
|
/*
|
|
* Record, key, and pointer address macros for btree blocks.
|
|
*
|
|
* (note that some of these may appear unused, but they are used in userspace)
|
|
*/
|
|
#define XFS_INOBT_REC_ADDR(mp, block, index) \
|
|
((xfs_inobt_rec_t *) \
|
|
((char *)(block) + \
|
|
XFS_INOBT_BLOCK_LEN(mp) + \
|
|
(((index) - 1) * sizeof(xfs_inobt_rec_t))))
|
|
|
|
#define XFS_INOBT_KEY_ADDR(mp, block, index) \
|
|
((xfs_inobt_key_t *) \
|
|
((char *)(block) + \
|
|
XFS_INOBT_BLOCK_LEN(mp) + \
|
|
((index) - 1) * sizeof(xfs_inobt_key_t)))
|
|
|
|
#define XFS_INOBT_PTR_ADDR(mp, block, index, maxrecs) \
|
|
((xfs_inobt_ptr_t *) \
|
|
((char *)(block) + \
|
|
XFS_INOBT_BLOCK_LEN(mp) + \
|
|
(maxrecs) * sizeof(xfs_inobt_key_t) + \
|
|
((index) - 1) * sizeof(xfs_inobt_ptr_t)))
|
|
|
|
extern struct xfs_btree_cur *xfs_inobt_init_cursor(struct xfs_mount *,
|
|
struct xfs_trans *, struct xfs_buf *, xfs_agnumber_t,
|
|
xfs_btnum_t);
|
|
extern int xfs_inobt_maxrecs(struct xfs_mount *, int, int);
|
|
|
|
/* ir_holemask to inode allocation bitmap conversion */
|
|
uint64_t xfs_inobt_irec_to_allocmask(struct xfs_inobt_rec_incore *);
|
|
|
|
#if defined(DEBUG) || defined(XFS_WARN)
|
|
int xfs_inobt_rec_check_count(struct xfs_mount *,
|
|
struct xfs_inobt_rec_incore *);
|
|
#else
|
|
#define xfs_inobt_rec_check_count(mp, rec) 0
|
|
#endif /* DEBUG */
|
|
|
|
int xfs_finobt_calc_reserves(struct xfs_mount *mp, struct xfs_trans *tp,
|
|
xfs_agnumber_t agno, xfs_extlen_t *ask, xfs_extlen_t *used);
|
|
extern xfs_extlen_t xfs_iallocbt_calc_size(struct xfs_mount *mp,
|
|
unsigned long long len);
|
|
|
|
#endif /* __XFS_IALLOC_BTREE_H__ */
|