File: rmap.h

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/*
 * Copyright (C) 2016 Oracle.  All Rights Reserved.
 *
 * Author: Darrick J. Wong <darrick.wong@oracle.com>
 *
 * This program is free software; you can redistribute it and/or
 * modify it under the terms of the GNU General Public License
 * as published by the Free Software Foundation; either version 2
 * of the License, or (at your option) any later version.
 *
 * This program is distributed in the hope that it would be useful,
 * but WITHOUT ANY WARRANTY; without even the implied warranty of
 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
 * GNU General Public License for more details.
 *
 * You should have received a copy of the GNU General Public License
 * along with this program; if not, write the Free Software Foundation,
 * Inc.,  51 Franklin St, Fifth Floor, Boston, MA  02110-1301, USA.
 */
#ifndef RMAP_H_
#define RMAP_H_

extern bool collect_rmaps;

extern bool rmap_needs_work(struct xfs_mount *);

extern void rmaps_init(struct xfs_mount *);
extern void rmaps_free(struct xfs_mount *);

extern int rmap_add_rec(struct xfs_mount *, xfs_ino_t, int, struct xfs_bmbt_irec *);
extern int rmap_finish_collecting_fork_recs(struct xfs_mount *mp,
		xfs_agnumber_t agno);
extern int rmap_add_ag_rec(struct xfs_mount *, xfs_agnumber_t agno,
		xfs_agblock_t agbno, xfs_extlen_t len, uint64_t owner);
extern int rmap_add_bmbt_rec(struct xfs_mount *, xfs_ino_t, int, xfs_fsblock_t);
extern int rmap_fold_raw_recs(struct xfs_mount *mp, xfs_agnumber_t agno);
extern bool rmaps_are_mergeable(struct xfs_rmap_irec *r1, struct xfs_rmap_irec *r2);

extern int rmap_add_fixed_ag_rec(struct xfs_mount *, xfs_agnumber_t);
extern int rmap_store_ag_btree_rec(struct xfs_mount *, xfs_agnumber_t);

extern size_t rmap_record_count(struct xfs_mount *, xfs_agnumber_t);
extern int rmap_init_cursor(xfs_agnumber_t, struct xfs_slab_cursor **);
extern void rmap_avoid_check(void);
extern int rmaps_verify_btree(struct xfs_mount *, xfs_agnumber_t);

extern __int64_t rmap_diffkeys(struct xfs_rmap_irec *kp1,
		struct xfs_rmap_irec *kp2);
extern void rmap_high_key_from_rec(struct xfs_rmap_irec *rec,
		struct xfs_rmap_irec *key);

extern int compute_refcounts(struct xfs_mount *, xfs_agnumber_t);
extern size_t refcount_record_count(struct xfs_mount *, xfs_agnumber_t);
extern int init_refcount_cursor(xfs_agnumber_t, struct xfs_slab_cursor **);
extern void refcount_avoid_check(void);
extern int check_refcounts(struct xfs_mount *, xfs_agnumber_t);

extern void record_inode_reflink_flag(struct xfs_mount *, struct xfs_dinode *,
	xfs_agnumber_t, xfs_agino_t, xfs_ino_t);
extern int fix_inode_reflink_flags(struct xfs_mount *, xfs_agnumber_t);

extern void fix_freelist(struct xfs_mount *, xfs_agnumber_t, bool);
extern void rmap_store_agflcount(struct xfs_mount *, xfs_agnumber_t, int);

#endif /* RMAP_H_ */