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, unsigned int flags, 16 struct xfs_bmbt_irec *imap); 17 int xfs_iomap_write_unwritten(struct xfs_inode *, xfs_off_t, xfs_off_t, bool); 18 xfs_fileoff_t xfs_iomap_eof_align_last_fsb(struct xfs_inode *ip, 19 xfs_fileoff_t end_fsb); 20 21 int xfs_bmbt_to_iomap(struct xfs_inode *ip, struct iomap *iomap, 22 struct xfs_bmbt_irec *imap, unsigned int mapping_flags, 23 u16 iomap_flags); 24 25 int xfs_zero_range(struct xfs_inode *ip, loff_t pos, loff_t len, 26 bool *did_zero); 27 int xfs_truncate_page(struct xfs_inode *ip, loff_t pos, bool *did_zero); 28 29 static inline xfs_filblks_t 30 xfs_aligned_fsb_count( 31 xfs_fileoff_t offset_fsb, 32 xfs_filblks_t count_fsb, 33 xfs_extlen_t extsz) 34 { 35 if (extsz) { 36 xfs_extlen_t align; 37 38 div_u64_rem(offset_fsb, extsz, &align); 39 if (align) 40 count_fsb += align; 41 div_u64_rem(count_fsb, extsz, &align); 42 if (align) 43 count_fsb += extsz - align; 44 } 45 46 return count_fsb; 47 } 48 49 extern const struct iomap_ops xfs_buffered_write_iomap_ops; 50 extern const struct iomap_ops xfs_direct_write_iomap_ops; 51 extern const struct iomap_ops xfs_read_iomap_ops; 52 extern const struct iomap_ops xfs_seek_iomap_ops; 53 extern const struct iomap_ops xfs_xattr_iomap_ops; 54 55 #endif /* __XFS_IOMAP_H__*/ 56