linux-phytium/fs/xfs/xfs_iomap.h

// SPDX-License-Identifier: GPL-2.0
/*
 * Copyright (c) 2003-2005 Silicon Graphics, Inc.
 * All Rights Reserved.
 */
#ifndef __XFS_IOMAP_H__
#define __XFS_IOMAP_H__

#include <linux/iomap.h>

struct xfs_inode;
struct xfs_bmbt_irec;

int xfs_iomap_write_direct(struct xfs_inode *, xfs_off_t, size_t,
			struct xfs_bmbt_irec *, int);
int xfs_iomap_write_allocate(struct xfs_inode *, int, xfs_off_t,
			struct xfs_bmbt_irec *, unsigned int *);
int xfs_iomap_write_unwritten(struct xfs_inode *, xfs_off_t, xfs_off_t, bool);

void xfs_bmbt_to_iomap(struct xfs_inode *, struct iomap *,
		struct xfs_bmbt_irec *);
xfs_extlen_t xfs_eof_alignment(struct xfs_inode *ip, xfs_extlen_t extsize);

static inline xfs_filblks_t
xfs_aligned_fsb_count(
	xfs_fileoff_t		offset_fsb,
	xfs_filblks_t		count_fsb,
	xfs_extlen_t		extsz)
{
	if (extsz) {
		xfs_extlen_t	align;

		div_u64_rem(offset_fsb, extsz, &align);
		if (align)
			count_fsb += align;
		div_u64_rem(count_fsb, extsz, &align);
		if (align)
			count_fsb += extsz - align;
	}

	return count_fsb;
}

extern const struct iomap_ops xfs_iomap_ops;
extern const struct iomap_ops xfs_xattr_iomap_ops;

#endif /* __XFS_IOMAP_H__*/