fs/xfs/scrub/findparent.h

   1 /* SPDX-License-Identifier: GPL-2.0-or-later */
   2 /*
   3  * Copyright (c) 2020-2024 Oracle.  All Rights Reserved.
   4  * Author: Darrick J. Wong <djwong@kernel.org>
   5  */
   6 #ifndef __XFS_SCRUB_FINDPARENT_H__
   7 #define __XFS_SCRUB_FINDPARENT_H__
   8
   9 struct xrep_parent_scan_info {
  10         struct xfs_scrub        *sc;
  11
  12         /* Inode scan cursor. */
  13         struct xchk_iscan       iscan;
  14
  15         /* Hook to capture directory entry updates. */
  16         struct xfs_dir_hook     dhook;
  17
  18         /* Lock protecting parent_ino. */
  19         struct mutex            lock;
  20
  21         /* Parent inode that we've found. */
  22         xfs_ino_t               parent_ino;
  23
  24         bool                    lookup_parent;
  25 };
  26
  27 int __xrep_findparent_scan_start(struct xfs_scrub *sc,
  28                 struct xrep_parent_scan_info *pscan,
  29                 notifier_fn_t custom_fn);
  30 static inline int xrep_findparent_scan_start(struct xfs_scrub *sc,
  31                 struct xrep_parent_scan_info *pscan)
  32 {
  33         return __xrep_findparent_scan_start(sc, pscan, NULL);
  34 }
  35 int xrep_findparent_scan(struct xrep_parent_scan_info *pscan);
  36 void xrep_findparent_scan_teardown(struct xrep_parent_scan_info *pscan);
  37
  38 static inline void
  39 xrep_findparent_scan_found(
  40         struct xrep_parent_scan_info    *pscan,
  41         xfs_ino_t                       ino)
  42 {
  43         mutex_lock(&pscan->lock);
  44         pscan->parent_ino = ino;
  45         mutex_unlock(&pscan->lock);
  46 }
  47
  48 void xrep_findparent_scan_finish_early(struct xrep_parent_scan_info *pscan,
  49                 xfs_ino_t ino);
  50
  51 int xrep_findparent_confirm(struct xfs_scrub *sc, xfs_ino_t *parent_ino);
  52
  53 xfs_ino_t xrep_findparent_self_reference(struct xfs_scrub *sc);
  54 xfs_ino_t xrep_findparent_from_dcache(struct xfs_scrub *sc);
  55
  56 #endif /* __XFS_SCRUB_FINDPARENT_H__ */