linux/fs/xfs/libxfs/xfs_trans_resv.h
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   1// SPDX-License-Identifier: GPL-2.0
   2/*
   3 * Copyright (c) 2000-2002,2005 Silicon Graphics, Inc.
   4 * All Rights Reserved.
   5 */
   6#ifndef __XFS_TRANS_RESV_H__
   7#define __XFS_TRANS_RESV_H__
   8
   9struct xfs_mount;
  10
  11/*
  12 * structure for maintaining pre-calculated transaction reservations.
  13 */
  14struct xfs_trans_res {
  15        uint    tr_logres;      /* log space unit in bytes per log ticket */
  16        int     tr_logcount;    /* number of log operations per log ticket */
  17        int     tr_logflags;    /* log flags, currently only used for indicating
  18                                 * a reservation request is permanent or not */
  19};
  20
  21struct xfs_trans_resv {
  22        struct xfs_trans_res    tr_write;       /* extent alloc trans */
  23        struct xfs_trans_res    tr_itruncate;   /* truncate trans */
  24        struct xfs_trans_res    tr_rename;      /* rename trans */
  25        struct xfs_trans_res    tr_link;        /* link trans */
  26        struct xfs_trans_res    tr_remove;      /* unlink trans */
  27        struct xfs_trans_res    tr_symlink;     /* symlink trans */
  28        struct xfs_trans_res    tr_create;      /* create trans */
  29        struct xfs_trans_res    tr_create_tmpfile; /* create O_TMPFILE trans */
  30        struct xfs_trans_res    tr_mkdir;       /* mkdir trans */
  31        struct xfs_trans_res    tr_ifree;       /* inode free trans */
  32        struct xfs_trans_res    tr_ichange;     /* inode update trans */
  33        struct xfs_trans_res    tr_growdata;    /* fs data section grow trans */
  34        struct xfs_trans_res    tr_addafork;    /* add inode attr fork trans */
  35        struct xfs_trans_res    tr_writeid;     /* write setuid/setgid file */
  36        struct xfs_trans_res    tr_attrinval;   /* attr fork buffer
  37                                                 * invalidation */
  38        struct xfs_trans_res    tr_attrsetm;    /* set/create an attribute at
  39                                                 * mount time */
  40        struct xfs_trans_res    tr_attrsetrt;   /* set/create an attribute at
  41                                                 * runtime */
  42        struct xfs_trans_res    tr_attrrm;      /* remove an attribute */
  43        struct xfs_trans_res    tr_clearagi;    /* clear agi unlinked bucket */
  44        struct xfs_trans_res    tr_growrtalloc; /* grow realtime allocations */
  45        struct xfs_trans_res    tr_growrtzero;  /* grow realtime zeroing */
  46        struct xfs_trans_res    tr_growrtfree;  /* grow realtime freeing */
  47        struct xfs_trans_res    tr_qm_setqlim;  /* adjust quota limits */
  48        struct xfs_trans_res    tr_qm_dqalloc;  /* allocate quota on disk */
  49        struct xfs_trans_res    tr_qm_quotaoff; /* turn quota off */
  50        struct xfs_trans_res    tr_qm_equotaoff;/* end of turn quota off */
  51        struct xfs_trans_res    tr_sb;          /* modify superblock */
  52        struct xfs_trans_res    tr_fsyncts;     /* update timestamps on fsync */
  53};
  54
  55/* shorthand way of accessing reservation structure */
  56#define M_RES(mp)       (&(mp)->m_resv)
  57
  58/*
  59 * Per-directory log reservation for any directory change.
  60 * dir blocks: (1 btree block per level + data block + free block) * dblock size
  61 * bmap btree: (levels + 2) * max depth * block size
  62 * v2 directory blocks can be fragmented below the dirblksize down to the fsb
  63 * size, so account for that in the DAENTER macros.
  64 */
  65#define XFS_DIROP_LOG_RES(mp)   \
  66        (XFS_FSB_TO_B(mp, XFS_DAENTER_BLOCKS(mp, XFS_DATA_FORK)) + \
  67         (XFS_FSB_TO_B(mp, XFS_DAENTER_BMAPS(mp, XFS_DATA_FORK) + 1)))
  68#define XFS_DIROP_LOG_COUNT(mp) \
  69        (XFS_DAENTER_BLOCKS(mp, XFS_DATA_FORK) + \
  70         XFS_DAENTER_BMAPS(mp, XFS_DATA_FORK) + 1)
  71
  72/*
  73 * Various log count values.
  74 */
  75#define XFS_DEFAULT_LOG_COUNT           1
  76#define XFS_DEFAULT_PERM_LOG_COUNT      2
  77#define XFS_ITRUNCATE_LOG_COUNT         2
  78#define XFS_ITRUNCATE_LOG_COUNT_REFLINK 8
  79#define XFS_INACTIVE_LOG_COUNT          2
  80#define XFS_CREATE_LOG_COUNT            2
  81#define XFS_CREATE_TMPFILE_LOG_COUNT    2
  82#define XFS_MKDIR_LOG_COUNT             3
  83#define XFS_SYMLINK_LOG_COUNT           3
  84#define XFS_REMOVE_LOG_COUNT            2
  85#define XFS_LINK_LOG_COUNT              2
  86#define XFS_RENAME_LOG_COUNT            2
  87#define XFS_WRITE_LOG_COUNT             2
  88#define XFS_WRITE_LOG_COUNT_REFLINK     8
  89#define XFS_ADDAFORK_LOG_COUNT          2
  90#define XFS_ATTRINVAL_LOG_COUNT         1
  91#define XFS_ATTRSET_LOG_COUNT           3
  92#define XFS_ATTRRM_LOG_COUNT            3
  93
  94void xfs_trans_resv_calc(struct xfs_mount *mp, struct xfs_trans_resv *resp);
  95uint xfs_allocfree_log_count(struct xfs_mount *mp, uint num_ops);
  96
  97#endif  /* __XFS_TRANS_RESV_H__ */
  98