[linux-block.git] / fs / xfs / scrub / xfile.h

/* SPDX-License-Identifier: GPL-2.0-or-later */
/*
 * Copyright (C) 2018-2023 Oracle.  All Rights Reserved.
 * Author: Darrick J. Wong <djwong@kernel.org>
 */
#ifndef __XFS_SCRUB_XFILE_H__
#define __XFS_SCRUB_XFILE_H__

struct xfile {
	struct file		*file;
};

int xfile_create(const char *description, loff_t isize, struct xfile **xfilep);
void xfile_destroy(struct xfile *xf);

int xfile_load(struct xfile *xf, void *buf, size_t count, loff_t pos);
int xfile_store(struct xfile *xf, const void *buf, size_t count,
		loff_t pos);

loff_t xfile_seek_data(struct xfile *xf, loff_t pos);

#define XFILE_MAX_FOLIO_SIZE	(PAGE_SIZE << MAX_PAGECACHE_ORDER)

#define XFILE_ALLOC		(1 << 0) /* allocate folio if not present */
struct folio *xfile_get_folio(struct xfile *xf, loff_t offset, size_t len,
		unsigned int flags);
void xfile_put_folio(struct xfile *xf, struct folio *folio);

#endif /* __XFS_SCRUB_XFILE_H__ */
Commit	Line	Data
3934e8eb DW	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
	9	struct xfile {
	10	struct file *file;
	11	};
	12
	13	int xfile_create(const char description, loff_t isize, struct xfile *xfilep);
	14	void xfile_destroy(struct xfile *xf);
	15
e47e2e0b CH	16	int xfile_load(struct xfile xf, void buf, size_t count, loff_t pos);
e47e2e0b CH	17	int xfile_store(struct xfile xf, const void buf, size_t count,
3934e8eb DW	18	loff_t pos);
3934e8eb DW	19
3934e8eb DW	20	loff_t xfile_seek_data(struct xfile *xf, loff_t pos);
3934e8eb DW	21
6907e3c0 DW	22	#define XFILE_MAX_FOLIO_SIZE (PAGE_SIZE << MAX_PAGECACHE_ORDER)
	23
	24	#define XFILE_ALLOC (1 << 0) /* allocate folio if not present */
	25	struct folio xfile_get_folio(struct xfile xf, loff_t offset, size_t len,
	26	unsigned int flags);
	27	void xfile_put_folio(struct xfile xf, struct folio folio);
	28
3934e8eb	29	#endif /* __XFS_SCRUB_XFILE_H__ */