fs/xfs/libxfs/xfs_trans_resv.h

   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
   9 struct xfs_mount;
  10
  11 /*
  12  * structure for maintaining pre-calculated transaction reservations.
  13  */
  14 struct 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
  21 struct 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_sb;          /* modify superblock */
  50         struct xfs_trans_res    tr_fsyncts;     /* update timestamps on fsync */
  51 };
  52
  53 /* shorthand way of accessing reservation structure */
  54 #define M_RES(mp)       (&(mp)->m_resv)
  55
  56 /*
  57  * Per-directory log reservation for any directory change.
  58  * dir blocks: (1 btree block per level + data block + free block) * dblock size
  59  * bmap btree: (levels + 2) * max depth * block size
  60  * v2 directory blocks can be fragmented below the dirblksize down to the fsb
  61  * size, so account for that in the DAENTER macros.
  62  */
  63 #define XFS_DIROP_LOG_RES(mp)   \
  64         (XFS_FSB_TO_B(mp, XFS_DAENTER_BLOCKS(mp, XFS_DATA_FORK)) + \
  65          (XFS_FSB_TO_B(mp, XFS_DAENTER_BMAPS(mp, XFS_DATA_FORK) + 1)))
  66 #define XFS_DIROP_LOG_COUNT(mp) \
  67         (XFS_DAENTER_BLOCKS(mp, XFS_DATA_FORK) + \
  68          XFS_DAENTER_BMAPS(mp, XFS_DATA_FORK) + 1)
  69
  70 /*
  71  * Various log count values.
  72  */
  73 #define XFS_DEFAULT_LOG_COUNT           1
  74 #define XFS_DEFAULT_PERM_LOG_COUNT      2
  75 #define XFS_ITRUNCATE_LOG_COUNT         2
  76 #define XFS_INACTIVE_LOG_COUNT          2
  77 #define XFS_CREATE_LOG_COUNT            2
  78 #define XFS_CREATE_TMPFILE_LOG_COUNT    2
  79 #define XFS_MKDIR_LOG_COUNT             3
  80 #define XFS_SYMLINK_LOG_COUNT           3
  81 #define XFS_REMOVE_LOG_COUNT            2
  82 #define XFS_LINK_LOG_COUNT              2
  83 #define XFS_RENAME_LOG_COUNT            2
  84 #define XFS_WRITE_LOG_COUNT             2
  85 #define XFS_ADDAFORK_LOG_COUNT          2
  86 #define XFS_ATTRINVAL_LOG_COUNT         1
  87 #define XFS_ATTRSET_LOG_COUNT           3
  88 #define XFS_ATTRRM_LOG_COUNT            3
  89
  90 /*
  91  * Original log operation counts were overestimated in the early days of
  92  * reflink.  These are retained here purely for minimum log size calculations
  93  * and must not be used for runtime reservations.
  94  */
  95 #define XFS_ITRUNCATE_LOG_COUNT_REFLINK 8
  96 #define XFS_WRITE_LOG_COUNT_REFLINK     8
  97
  98 void xfs_trans_resv_calc(struct xfs_mount *mp, struct xfs_trans_resv *resp);
  99 uint xfs_allocfree_block_count(struct xfs_mount *mp, uint num_ops);
 100
 101 unsigned int xfs_calc_itruncate_reservation_minlogsize(struct xfs_mount *mp);
 102 unsigned int xfs_calc_write_reservation_minlogsize(struct xfs_mount *mp);
 103 unsigned int xfs_calc_qm_dqalloc_reservation_minlogsize(struct xfs_mount *mp);
 104
 105 #endif  /* __XFS_TRANS_RESV_H__ */