/*
 * 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 __XFS_REFLINK_H
#define __XFS_REFLINK_H 1

extern int xfs_reflink_find_shared(struct xfs_mount *mp, xfs_agnumber_t agno,
		xfs_agblock_t agbno, xfs_extlen_t aglen, xfs_agblock_t *fbno,
		xfs_extlen_t *flen, bool find_maximal);
extern int xfs_reflink_trim_around_shared(struct xfs_inode *ip,
		struct xfs_bmbt_irec *irec, bool *shared, bool *trimmed);

extern int xfs_reflink_reserve_cow(struct xfs_inode *ip,
		struct xfs_bmbt_irec *imap, bool *shared);
extern int xfs_reflink_allocate_cow_range(struct xfs_inode *ip,
		xfs_off_t offset, xfs_off_t count);
extern bool xfs_reflink_find_cow_mapping(struct xfs_inode *ip, xfs_off_t offset,
		struct xfs_bmbt_irec *imap);
extern void xfs_reflink_trim_irec_to_next_cow(struct xfs_inode *ip,
		xfs_fileoff_t offset_fsb, struct xfs_bmbt_irec *imap);

extern int xfs_reflink_cancel_cow_blocks(struct xfs_inode *ip,
		struct xfs_trans **tpp, xfs_fileoff_t offset_fsb,
		xfs_fileoff_t end_fsb);
extern int xfs_reflink_cancel_cow_range(struct xfs_inode *ip, xfs_off_t offset,
		xfs_off_t count);
extern int xfs_reflink_end_cow(struct xfs_inode *ip, xfs_off_t offset,
		xfs_off_t count);
extern int xfs_reflink_recover_cow(struct xfs_mount *mp);
extern int xfs_reflink_remap_range(struct file *file_in, loff_t pos_in,
		struct file *file_out, loff_t pos_out, u64 len, bool is_dedupe);
extern int xfs_reflink_clear_inode_flag(struct xfs_inode *ip,
		struct xfs_trans **tpp);
extern int xfs_reflink_unshare(struct xfs_inode *ip, xfs_off_t offset,
		xfs_off_t len);

#endif /* __XFS_REFLINK_H */
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