cachepc-linux

Fork of AMDESE/linux with modifications for CachePC side-channel attack
git clone https://git.sinitax.com/sinitax/cachepc-linux
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xfs_ialloc_btree.h (2564B)

      1// SPDX-License-Identifier: GPL-2.0
      2/*
      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 structures
     11 */
     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
     49extern struct xfs_btree_cur *xfs_inobt_init_cursor(struct xfs_mount *mp,
     50		struct xfs_trans *tp, struct xfs_buf *agbp,
     51		struct xfs_perag *pag, xfs_btnum_t btnum);
     52struct xfs_btree_cur *xfs_inobt_stage_cursor(struct xfs_mount *mp,
     53		struct xbtree_afakeroot *afake, struct xfs_perag *pag,
     54		xfs_btnum_t btnum);
     55extern int xfs_inobt_maxrecs(struct xfs_mount *, int, int);
     56
     57/* ir_holemask to inode allocation bitmap conversion */
     58uint64_t xfs_inobt_irec_to_allocmask(struct xfs_inobt_rec_incore *);
     59
     60#if defined(DEBUG) || defined(XFS_WARN)
     61int xfs_inobt_rec_check_count(struct xfs_mount *,
     62			      struct xfs_inobt_rec_incore *);
     63#else
     64#define xfs_inobt_rec_check_count(mp, rec)	0
     65#endif	/* DEBUG */
     66
     67int xfs_finobt_calc_reserves(struct xfs_mount *mp, struct xfs_trans *tp,
     68		struct xfs_perag *pag, xfs_extlen_t *ask, xfs_extlen_t *used);
     69extern xfs_extlen_t xfs_iallocbt_calc_size(struct xfs_mount *mp,
     70		unsigned long long len);
     71int xfs_inobt_cur(struct xfs_mount *mp, struct xfs_trans *tp,
     72		struct xfs_perag *pag, xfs_btnum_t btnum,
     73		struct xfs_btree_cur **curpp, struct xfs_buf **agi_bpp);
     74
     75void xfs_inobt_commit_staged_btree(struct xfs_btree_cur *cur,
     76		struct xfs_trans *tp, struct xfs_buf *agbp);
     77
     78unsigned int xfs_iallocbt_maxlevels_ondisk(void);
     79
     80int __init xfs_inobt_init_cur_cache(void);
     81void xfs_inobt_destroy_cur_cache(void);
     82
     83#endif	/* __XFS_IALLOC_BTREE_H__ */