1 // SPDX-License-Identifier: GPL-2.0 2 /* 3 * Copyright (c) 2003-2005 Silicon Graphics, Inc. 4 * All Rights Reserved. 5 */ 6 #ifndef __XFS_IOMAP_H__ 7 #define __XFS_IOMAP_H__ 8 9 #include <linux/iomap.h> 10 11 struct xfs_inode; 12 struct xfs_bmbt_irec; 13 14 int xfs_iomap_write_direct(struct xfs_inode *ip, xfs_fileoff_t offset_fsb, 15 xfs_fileoff_t count_fsb, struct xfs_bmbt_irec *imap); 16 int xfs_iomap_write_unwritten(struct xfs_inode *, xfs_off_t, xfs_off_t, bool); 17 xfs_fileoff_t xfs_iomap_eof_align_last_fsb(struct xfs_inode *ip, 18 xfs_fileoff_t end_fsb); 19 20 int xfs_bmbt_to_iomap(struct xfs_inode *ip, struct iomap *iomap, 21 struct xfs_bmbt_irec *imap, unsigned int mapping_flags, 22 u16 iomap_flags); 23 24 int xfs_zero_range(struct xfs_inode *ip, loff_t pos, loff_t len, 25 bool *did_zero); 26 int xfs_truncate_page(struct xfs_inode *ip, loff_t pos, bool *did_zero); 27 28 static inline xfs_filblks_t 29 xfs_aligned_fsb_count( 30 xfs_fileoff_t offset_fsb, 31 xfs_filblks_t count_fsb, 32 xfs_extlen_t extsz) 33 { 34 if (extsz) { 35 xfs_extlen_t align; 36 37 div_u64_rem(offset_fsb, extsz, &align); 38 if (align) 39 count_fsb += align; 40 div_u64_rem(count_fsb, extsz, &align); 41 if (align) 42 count_fsb += extsz - align; 43 } 44 45 return count_fsb; 46 } 47 48 extern const struct iomap_ops xfs_buffered_write_iomap_ops; 49 extern const struct iomap_ops xfs_direct_write_iomap_ops; 50 extern const struct iomap_ops xfs_read_iomap_ops; 51 extern const struct iomap_ops xfs_seek_iomap_ops; 52 extern const struct iomap_ops xfs_xattr_iomap_ops; 53 54 #endif /* __XFS_IOMAP_H__*/ 55