fs/xfs/scrub/repair.h

   1 // SPDX-License-Identifier: GPL-2.0+
   2 /*
   3  * Copyright (C) 2018 Oracle.  All Rights Reserved.
   4  * Author: Darrick J. Wong <darrick.wong@oracle.com>
   5  */
   6 #ifndef __XFS_SCRUB_REPAIR_H__
   7 #define __XFS_SCRUB_REPAIR_H__
   8
   9 static inline int xfs_repair_notsupported(struct xfs_scrub_context *sc)
  10 {
  11         return -EOPNOTSUPP;
  12 }
  13
  14 #ifdef CONFIG_XFS_ONLINE_REPAIR
  15
  16 /* Repair helpers */
  17
  18 int xfs_repair_attempt(struct xfs_inode *ip, struct xfs_scrub_context *sc,
  19                 bool *fixed);
  20 void xfs_repair_failure(struct xfs_mount *mp);
  21 int xfs_repair_roll_ag_trans(struct xfs_scrub_context *sc);
  22 bool xfs_repair_ag_has_space(struct xfs_perag *pag, xfs_extlen_t nr_blocks,
  23                 enum xfs_ag_resv_type type);
  24 xfs_extlen_t xfs_repair_calc_ag_resblks(struct xfs_scrub_context *sc);
  25 int xfs_repair_alloc_ag_block(struct xfs_scrub_context *sc,
  26                 struct xfs_owner_info *oinfo, xfs_fsblock_t *fsbno,
  27                 enum xfs_ag_resv_type resv);
  28 int xfs_repair_init_btblock(struct xfs_scrub_context *sc, xfs_fsblock_t fsb,
  29                 struct xfs_buf **bpp, xfs_btnum_t btnum,
  30                 const struct xfs_buf_ops *ops);
  31
  32 struct xfs_repair_extent {
  33         struct list_head                list;
  34         xfs_fsblock_t                   fsbno;
  35         xfs_extlen_t                    len;
  36 };
  37
  38 struct xfs_repair_extent_list {
  39         struct list_head                list;
  40 };
  41
  42 static inline void
  43 xfs_repair_init_extent_list(
  44         struct xfs_repair_extent_list   *exlist)
  45 {
  46         INIT_LIST_HEAD(&exlist->list);
  47 }
  48
  49 #define for_each_xfs_repair_extent_safe(rbe, n, exlist) \
  50         list_for_each_entry_safe((rbe), (n), &(exlist)->list, list)
  51 int xfs_repair_collect_btree_extent(struct xfs_scrub_context *sc,
  52                 struct xfs_repair_extent_list *btlist, xfs_fsblock_t fsbno,
  53                 xfs_extlen_t len);
  54 void xfs_repair_cancel_btree_extents(struct xfs_scrub_context *sc,
  55                 struct xfs_repair_extent_list *btlist);
  56 int xfs_repair_subtract_extents(struct xfs_scrub_context *sc,
  57                 struct xfs_repair_extent_list *exlist,
  58                 struct xfs_repair_extent_list *sublist);
  59 int xfs_repair_fix_freelist(struct xfs_scrub_context *sc, bool can_shrink);
  60 int xfs_repair_invalidate_blocks(struct xfs_scrub_context *sc,
  61                 struct xfs_repair_extent_list *btlist);
  62 int xfs_repair_reap_btree_extents(struct xfs_scrub_context *sc,
  63                 struct xfs_repair_extent_list *exlist,
  64                 struct xfs_owner_info *oinfo, enum xfs_ag_resv_type type);
  65
  66 struct xfs_repair_find_ag_btree {
  67         /* in: rmap owner of the btree we're looking for */
  68         uint64_t                        rmap_owner;
  69
  70         /* in: buffer ops */
  71         const struct xfs_buf_ops        *buf_ops;
  72
  73         /* in: magic number of the btree */
  74         uint32_t                        magic;
  75
  76         /* out: the highest btree block found and the tree height */
  77         xfs_agblock_t                   root;
  78         unsigned int                    height;
  79 };
  80
  81 int xfs_repair_find_ag_btree_roots(struct xfs_scrub_context *sc,
  82                 struct xfs_buf *agf_bp,
  83                 struct xfs_repair_find_ag_btree *btree_info,
  84                 struct xfs_buf *agfl_bp);
  85 void xfs_repair_force_quotacheck(struct xfs_scrub_context *sc, uint dqtype);
  86 int xfs_repair_ino_dqattach(struct xfs_scrub_context *sc);
  87
  88 /* Metadata repairers */
  89
  90 int xfs_repair_probe(struct xfs_scrub_context *sc);
  91 int xfs_repair_superblock(struct xfs_scrub_context *sc);
  92
  93 #else
  94
  95 static inline int xfs_repair_attempt(
  96         struct xfs_inode                *ip,
  97         struct xfs_scrub_context        *sc,
  98         bool                            *fixed)
  99 {
 100         return -EOPNOTSUPP;
 101 }
 102
 103 static inline void xfs_repair_failure(struct xfs_mount *mp) {}
 104
 105 static inline xfs_extlen_t
 106 xfs_repair_calc_ag_resblks(
 107         struct xfs_scrub_context        *sc)
 108 {
 109         ASSERT(!(sc->sm->sm_flags & XFS_SCRUB_IFLAG_REPAIR));
 110         return 0;
 111 }
 112
 113 #define xfs_repair_probe                xfs_repair_notsupported
 114 #define xfs_repair_superblock           xfs_repair_notsupported
 115
 116 #endif /* CONFIG_XFS_ONLINE_REPAIR */
 117
 118 #endif  /* __XFS_SCRUB_REPAIR_H__ */