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While we're scanning the filesystem for parent pointers that we can turn into dirents, we cannot hold the IOLOCK or ILOCK of the directory being repaired. Therefore, we need to set up a dirent hook so that we can keep the temporary directory up to date with the rest of the filesystem. Hence we add the ability to *remove* entries from the temporary dir. Signed-off-by: Darrick J. Wong <djwong@kernel.org> Reviewed-by: Christoph Hellwig <hch@lst.de>
57 lines
1.5 KiB
C
57 lines
1.5 KiB
C
/* SPDX-License-Identifier: GPL-2.0-or-later */
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/*
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* Copyright (c) 2020-2024 Oracle. All Rights Reserved.
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* Author: Darrick J. Wong <djwong@kernel.org>
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*/
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#ifndef __XFS_SCRUB_FINDPARENT_H__
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#define __XFS_SCRUB_FINDPARENT_H__
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struct xrep_parent_scan_info {
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struct xfs_scrub *sc;
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/* Inode scan cursor. */
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struct xchk_iscan iscan;
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/* Hook to capture directory entry updates. */
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struct xfs_dir_hook dhook;
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/* Lock protecting parent_ino. */
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struct mutex lock;
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/* Parent inode that we've found. */
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xfs_ino_t parent_ino;
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bool lookup_parent;
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};
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int __xrep_findparent_scan_start(struct xfs_scrub *sc,
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struct xrep_parent_scan_info *pscan,
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notifier_fn_t custom_fn);
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static inline int xrep_findparent_scan_start(struct xfs_scrub *sc,
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struct xrep_parent_scan_info *pscan)
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{
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return __xrep_findparent_scan_start(sc, pscan, NULL);
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}
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int xrep_findparent_scan(struct xrep_parent_scan_info *pscan);
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void xrep_findparent_scan_teardown(struct xrep_parent_scan_info *pscan);
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static inline void
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xrep_findparent_scan_found(
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struct xrep_parent_scan_info *pscan,
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xfs_ino_t ino)
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{
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mutex_lock(&pscan->lock);
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pscan->parent_ino = ino;
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mutex_unlock(&pscan->lock);
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}
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void xrep_findparent_scan_finish_early(struct xrep_parent_scan_info *pscan,
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xfs_ino_t ino);
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int xrep_findparent_confirm(struct xfs_scrub *sc, xfs_ino_t *parent_ino);
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xfs_ino_t xrep_findparent_self_reference(struct xfs_scrub *sc);
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xfs_ino_t xrep_findparent_from_dcache(struct xfs_scrub *sc);
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#endif /* __XFS_SCRUB_FINDPARENT_H__ */
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