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_alloc_btree.h (1965B)

      1/* SPDX-License-Identifier: GPL-2.0 */
      2/*
      3 * Copyright (c) 2000,2005 Silicon Graphics, Inc.
      4 * All Rights Reserved.
      5 */
      6#ifndef __XFS_ALLOC_BTREE_H__
      7#define	__XFS_ALLOC_BTREE_H__
      8
      9/*
     10 * Freespace on-disk structures
     11 */
     12
     13struct xfs_buf;
     14struct xfs_btree_cur;
     15struct xfs_mount;
     16struct xfs_perag;
     17struct xbtree_afakeroot;
     18
     19/*
     20 * Btree block header size depends on a superblock flag.
     21 */
     22#define XFS_ALLOC_BLOCK_LEN(mp) \
     23	(xfs_has_crc(((mp))) ? \
     24		XFS_BTREE_SBLOCK_CRC_LEN : XFS_BTREE_SBLOCK_LEN)
     25
     26/*
     27 * Record, key, and pointer address macros for btree blocks.
     28 *
     29 * (note that some of these may appear unused, but they are used in userspace)
     30 */
     31#define XFS_ALLOC_REC_ADDR(mp, block, index) \
     32	((xfs_alloc_rec_t *) \
     33		((char *)(block) + \
     34		 XFS_ALLOC_BLOCK_LEN(mp) + \
     35		 (((index) - 1) * sizeof(xfs_alloc_rec_t))))
     36
     37#define XFS_ALLOC_KEY_ADDR(mp, block, index) \
     38	((xfs_alloc_key_t *) \
     39		((char *)(block) + \
     40		 XFS_ALLOC_BLOCK_LEN(mp) + \
     41		 ((index) - 1) * sizeof(xfs_alloc_key_t)))
     42
     43#define XFS_ALLOC_PTR_ADDR(mp, block, index, maxrecs) \
     44	((xfs_alloc_ptr_t *) \
     45		((char *)(block) + \
     46		 XFS_ALLOC_BLOCK_LEN(mp) + \
     47		 (maxrecs) * sizeof(xfs_alloc_key_t) + \
     48		 ((index) - 1) * sizeof(xfs_alloc_ptr_t)))
     49
     50extern struct xfs_btree_cur *xfs_allocbt_init_cursor(struct xfs_mount *mp,
     51		struct xfs_trans *tp, struct xfs_buf *bp,
     52		struct xfs_perag *pag, xfs_btnum_t btnum);
     53struct xfs_btree_cur *xfs_allocbt_stage_cursor(struct xfs_mount *mp,
     54		struct xbtree_afakeroot *afake, struct xfs_perag *pag,
     55		xfs_btnum_t btnum);
     56extern int xfs_allocbt_maxrecs(struct xfs_mount *, int, int);
     57extern xfs_extlen_t xfs_allocbt_calc_size(struct xfs_mount *mp,
     58		unsigned long long len);
     59
     60void xfs_allocbt_commit_staged_btree(struct xfs_btree_cur *cur,
     61		struct xfs_trans *tp, struct xfs_buf *agbp);
     62
     63unsigned int xfs_allocbt_maxlevels_ondisk(void);
     64
     65int __init xfs_allocbt_init_cur_cache(void);
     66void xfs_allocbt_destroy_cur_cache(void);
     67
     68#endif	/* __XFS_ALLOC_BTREE_H__ */