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1/* SPDX-License-Identifier: GPL-2.0-or-later */2/*3 * Copyright (c) 2020-2024 Oracle. All Rights Reserved.4 * Author: Darrick J. Wong <djwong@kernel.org>5 */6#ifndef __XFS_EXCHRANGE_H__7#define __XFS_EXCHRANGE_H__8 9/* Update the mtime/cmtime of file1 and file2 */10#define __XFS_EXCHANGE_RANGE_UPD_CMTIME1 (1ULL << 63)11#define __XFS_EXCHANGE_RANGE_UPD_CMTIME2 (1ULL << 62)12 13/* Freshness check required */14#define __XFS_EXCHANGE_RANGE_CHECK_FRESH2 (1ULL << 61)15 16#define XFS_EXCHANGE_RANGE_PRIV_FLAGS (__XFS_EXCHANGE_RANGE_UPD_CMTIME1 | \17 __XFS_EXCHANGE_RANGE_UPD_CMTIME2 | \18 __XFS_EXCHANGE_RANGE_CHECK_FRESH2)19 20struct xfs_exchrange {21 struct file *file1;22 struct file *file2;23 24 loff_t file1_offset;25 loff_t file2_offset;26 u64 length;27 28 u64 flags; /* XFS_EXCHANGE_RANGE flags */29 30 /* file2 metadata for freshness checks */31 u64 file2_ino;32 struct timespec64 file2_mtime;33 struct timespec64 file2_ctime;34 u32 file2_gen;35};36 37long xfs_ioc_exchange_range(struct file *file,38 struct xfs_exchange_range __user *argp);39long xfs_ioc_start_commit(struct file *file,40 struct xfs_commit_range __user *argp);41long xfs_ioc_commit_range(struct file *file,42 struct xfs_commit_range __user *argp);43 44struct xfs_exchmaps_req;45 46void xfs_exchrange_ilock(struct xfs_trans *tp, struct xfs_inode *ip1,47 struct xfs_inode *ip2);48void xfs_exchrange_iunlock(struct xfs_inode *ip1, struct xfs_inode *ip2);49 50int xfs_exchrange_estimate(struct xfs_exchmaps_req *req);51 52#endif /* __XFS_EXCHRANGE_H__ */53