// SPDX-License-Identifier: GPL-2.0+ /* * Copyright (C) 2016 Oracle. All Rights Reserved. * Author: Darrick J. Wong <darrick.wong@oracle.com> */ #ifndef __XFS_REFLINK_H #define __XFS_REFLINK_H 1 static inline bool xfs_is_always_cow_inode(struct xfs_inode *ip) { return ip->i_mount->m_always_cow && xfs_has_reflink(ip->i_mount); } static inline bool xfs_is_cow_inode(struct xfs_inode *ip) { return xfs_is_reflink_inode(ip) || xfs_is_always_cow_inode(ip); } 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); int xfs_bmap_trim_cow(struct xfs_inode *ip, struct xfs_bmbt_irec *imap, bool *shared); int xfs_reflink_allocate_cow(struct xfs_inode *ip, struct xfs_bmbt_irec *imap, struct xfs_bmbt_irec *cmap, bool *shared, uint *lockmode, bool convert_now); extern int xfs_reflink_convert_cow(struct xfs_inode *ip, xfs_off_t offset, xfs_off_t count); 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 loff_t xfs_reflink_remap_range(struct file *file_in, loff_t pos_in, struct file *file_out, loff_t pos_out, loff_t len, unsigned int remap_flags); 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); extern int xfs_reflink_remap_prep(struct file *file_in, loff_t pos_in, struct file *file_out, loff_t pos_out, loff_t *len, unsigned int remap_flags); extern int xfs_reflink_remap_blocks(struct xfs_inode *src, loff_t pos_in, struct xfs_inode *dest, loff_t pos_out, loff_t remap_len, loff_t *remapped); extern int xfs_reflink_update_dest(struct xfs_inode *dest, xfs_off_t newlen, xfs_extlen_t cowextsize, unsigned int remap_flags); #endif /* __XFS_REFLINK_H */