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Linux/fs/xfs/scrub/findparent.h

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  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__ */
 57 

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