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https://github.com/AuxXxilium/linux_dsm_epyc7002.git
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0f28b25731
Scrub parent pointers, sort of. For directories, we can ride the '..' entry up to the parent to confirm that there's at most one dentry that points back to this directory. Signed-off-by: Darrick J. Wong <darrick.wong@oracle.com> Reviewed-by: Dave Chinner <dchinner@redhat.com>
92 lines
3.0 KiB
C
92 lines
3.0 KiB
C
/*
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* Copyright (C) 2017 Oracle. All Rights Reserved.
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*
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* Author: Darrick J. Wong <darrick.wong@oracle.com>
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*
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* This program is free software; you can redistribute it and/or
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* modify it under the terms of the GNU General Public License
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* as published by the Free Software Foundation; either version 2
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* of the License, or (at your option) any later version.
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*
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* This program is distributed in the hope that it would be useful,
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* but WITHOUT ANY WARRANTY; without even the implied warranty of
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* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
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* GNU General Public License for more details.
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*
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* You should have received a copy of the GNU General Public License
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* along with this program; if not, write the Free Software Foundation,
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* Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301, USA.
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*/
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#ifndef __XFS_SCRUB_SCRUB_H__
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#define __XFS_SCRUB_SCRUB_H__
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struct xfs_scrub_context;
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struct xfs_scrub_meta_ops {
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/* Acquire whatever resources are needed for the operation. */
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int (*setup)(struct xfs_scrub_context *,
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struct xfs_inode *);
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/* Examine metadata for errors. */
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int (*scrub)(struct xfs_scrub_context *);
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/* Decide if we even have this piece of metadata. */
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bool (*has)(struct xfs_sb *);
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};
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/* Buffer pointers and btree cursors for an entire AG. */
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struct xfs_scrub_ag {
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xfs_agnumber_t agno;
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/* AG btree roots */
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struct xfs_buf *agf_bp;
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struct xfs_buf *agfl_bp;
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struct xfs_buf *agi_bp;
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/* AG btrees */
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struct xfs_btree_cur *bno_cur;
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struct xfs_btree_cur *cnt_cur;
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struct xfs_btree_cur *ino_cur;
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struct xfs_btree_cur *fino_cur;
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struct xfs_btree_cur *rmap_cur;
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struct xfs_btree_cur *refc_cur;
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};
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struct xfs_scrub_context {
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/* General scrub state. */
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struct xfs_mount *mp;
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struct xfs_scrub_metadata *sm;
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const struct xfs_scrub_meta_ops *ops;
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struct xfs_trans *tp;
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struct xfs_inode *ip;
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void *buf;
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uint ilock_flags;
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bool try_harder;
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/* State tracking for single-AG operations. */
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struct xfs_scrub_ag sa;
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};
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/* Metadata scrubbers */
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int xfs_scrub_tester(struct xfs_scrub_context *sc);
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int xfs_scrub_superblock(struct xfs_scrub_context *sc);
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int xfs_scrub_agf(struct xfs_scrub_context *sc);
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int xfs_scrub_agfl(struct xfs_scrub_context *sc);
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int xfs_scrub_agi(struct xfs_scrub_context *sc);
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int xfs_scrub_bnobt(struct xfs_scrub_context *sc);
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int xfs_scrub_cntbt(struct xfs_scrub_context *sc);
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int xfs_scrub_inobt(struct xfs_scrub_context *sc);
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int xfs_scrub_finobt(struct xfs_scrub_context *sc);
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int xfs_scrub_rmapbt(struct xfs_scrub_context *sc);
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int xfs_scrub_refcountbt(struct xfs_scrub_context *sc);
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int xfs_scrub_inode(struct xfs_scrub_context *sc);
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int xfs_scrub_bmap_data(struct xfs_scrub_context *sc);
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int xfs_scrub_bmap_attr(struct xfs_scrub_context *sc);
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int xfs_scrub_bmap_cow(struct xfs_scrub_context *sc);
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int xfs_scrub_directory(struct xfs_scrub_context *sc);
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int xfs_scrub_xattr(struct xfs_scrub_context *sc);
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int xfs_scrub_symlink(struct xfs_scrub_context *sc);
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int xfs_scrub_parent(struct xfs_scrub_context *sc);
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#endif /* __XFS_SCRUB_SCRUB_H__ */
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