/*
   * 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, struct xfs_trans *tp,
  		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(struct xfs_inode *ip,
  		struct xfs_bmbt_irec *imap, bool *shared, uint *lockmode);
  extern int xfs_reflink_convert_cow(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, bool cancel_real);
  extern int xfs_reflink_cancel_cow_range(struct xfs_inode *ip, xfs_off_t offset,
  		xfs_off_t count, bool cancel_real);
  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_inode_has_shared_extents(struct xfs_trans *tp,
  		struct xfs_inode *ip, bool *has_shared);
  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 */