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1/* SPDX-License-Identifier: GPL-2.0-or-later */2/*3 * Copyright (C) 2018-2023 Oracle. All Rights Reserved.4 * Author: Darrick J. Wong <djwong@kernel.org>5 */6#ifndef __XFS_SCRUB_XFILE_H__7#define __XFS_SCRUB_XFILE_H__8 9struct xfile {10 struct file *file;11};12 13int xfile_create(const char *description, loff_t isize, struct xfile **xfilep);14void xfile_destroy(struct xfile *xf);15 16int xfile_load(struct xfile *xf, void *buf, size_t count, loff_t pos);17int xfile_store(struct xfile *xf, const void *buf, size_t count,18 loff_t pos);19 20void xfile_discard(struct xfile *xf, loff_t pos, u64 count);21loff_t xfile_seek_data(struct xfile *xf, loff_t pos);22 23#define XFILE_MAX_FOLIO_SIZE (PAGE_SIZE << MAX_PAGECACHE_ORDER)24 25#define XFILE_ALLOC (1 << 0) /* allocate folio if not present */26struct folio *xfile_get_folio(struct xfile *xf, loff_t offset, size_t len,27 unsigned int flags);28void xfile_put_folio(struct xfile *xf, struct folio *folio);29 30static inline unsigned long long xfile_bytes(struct xfile *xf)31{32 return file_inode(xf->file)->i_blocks << SECTOR_SHIFT;33}34 35#endif /* __XFS_SCRUB_XFILE_H__ */36