fs/xfs/scrub/newbt.h

   1 // SPDX-License-Identifier: GPL-2.0-or-later
   2 /*
   3  * Copyright (C) 2022-2023 Oracle.  All Rights Reserved.
   4  * Author: Darrick J. Wong <djwong@kernel.org>
   5  */
   6 #ifndef __XFS_SCRUB_NEWBT_H__
   7 #define __XFS_SCRUB_NEWBT_H__
   8
   9 struct xfs_alloc_arg;
  10
  11 struct xrep_newbt_resv {
  12         /* Link to list of extents that we've reserved. */
  13         struct list_head        list;
  14
  15         struct xfs_perag        *pag;
  16
  17         /* Auto-freeing this reservation if we don't commit. */
  18         struct xfs_alloc_autoreap autoreap;
  19
  20         /* AG block of the extent we reserved. */
  21         xfs_agblock_t           agbno;
  22
  23         /* Length of the reservation. */
  24         xfs_extlen_t            len;
  25
  26         /* How much of this reservation has been used. */
  27         xfs_extlen_t            used;
  28 };
  29
  30 struct xrep_newbt {
  31         struct xfs_scrub        *sc;
  32
  33         /* Custom allocation function, or NULL for xfs_alloc_vextent */
  34         int                     (*alloc_vextent)(struct xfs_scrub *sc,
  35                                                  struct xfs_alloc_arg *args,
  36                                                  xfs_fsblock_t alloc_hint);
  37
  38         /* List of extents that we've reserved. */
  39         struct list_head        resv_list;
  40
  41         /* Fake root for new btree. */
  42         union {
  43                 struct xbtree_afakeroot afake;
  44                 struct xbtree_ifakeroot ifake;
  45         };
  46
  47         /* rmap owner of these blocks */
  48         struct xfs_owner_info   oinfo;
  49
  50         /* btree geometry for the bulk loader */
  51         struct xfs_btree_bload  bload;
  52
  53         /* Allocation hint */
  54         xfs_fsblock_t           alloc_hint;
  55
  56         /* per-ag reservation type */
  57         enum xfs_ag_resv_type   resv;
  58 };
  59
  60 void xrep_newbt_init_bare(struct xrep_newbt *xnr, struct xfs_scrub *sc);
  61 void xrep_newbt_init_ag(struct xrep_newbt *xnr, struct xfs_scrub *sc,
  62                 const struct xfs_owner_info *oinfo, xfs_fsblock_t alloc_hint,
  63                 enum xfs_ag_resv_type resv);
  64 int xrep_newbt_init_inode(struct xrep_newbt *xnr, struct xfs_scrub *sc,
  65                 int whichfork, const struct xfs_owner_info *oinfo);
  66 int xrep_newbt_alloc_blocks(struct xrep_newbt *xnr, uint64_t nr_blocks);
  67 int xrep_newbt_add_extent(struct xrep_newbt *xnr, struct xfs_perag *pag,
  68                 xfs_agblock_t agbno, xfs_extlen_t len);
  69 void xrep_newbt_cancel(struct xrep_newbt *xnr);
  70 int xrep_newbt_commit(struct xrep_newbt *xnr);
  71 int xrep_newbt_claim_block(struct xfs_btree_cur *cur, struct xrep_newbt *xnr,
  72                 union xfs_btree_ptr *ptr);
  73 unsigned int xrep_newbt_unused_blocks(struct xrep_newbt *xnr);
  74
  75 #endif /* __XFS_SCRUB_NEWBT_H__ */