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 struct xfs_zone_alloc_ctx; 14 15 int xfs_iomap_write_direct(struct xfs_inode *ip, xfs_fileoff_t offset_fsb, 16 xfs_fileoff_t count_fsb, unsigned int flags, 17 struct xfs_bmbt_irec *imap, u64 *sequence); 18 int xfs_iomap_write_unwritten(struct xfs_inode *, xfs_off_t, xfs_off_t, bool); 19 xfs_fileoff_t xfs_iomap_eof_align_last_fsb(struct xfs_inode *ip, 20 xfs_fileoff_t end_fsb); 21 22 u64 xfs_iomap_inode_sequence(struct xfs_inode *ip, u16 iomap_flags); 23 int xfs_bmbt_to_iomap(struct xfs_inode *ip, struct iomap *iomap, 24 struct xfs_bmbt_irec *imap, unsigned int mapping_flags, 25 u16 iomap_flags, u64 sequence_cookie); 26 27 int xfs_zero_range(struct xfs_inode *ip, loff_t pos, loff_t len, 28 struct xfs_zone_alloc_ctx *ac, bool *did_zero); 29 int xfs_truncate_page(struct xfs_inode *ip, loff_t pos, 30 struct xfs_zone_alloc_ctx *ac, bool *did_zero); 31 32 static inline xfs_filblks_t 33 xfs_aligned_fsb_count( 34 xfs_fileoff_t offset_fsb, 35 xfs_filblks_t count_fsb, 36 xfs_extlen_t extsz) 37 { 38 if (extsz) { 39 xfs_extlen_t align; 40 41 div_u64_rem(offset_fsb, extsz, &align); 42 if (align) 43 count_fsb += align; 44 div_u64_rem(count_fsb, extsz, &align); 45 if (align) 46 count_fsb += extsz - align; 47 } 48 49 return count_fsb; 50 } 51 52 extern const struct iomap_ops xfs_buffered_write_iomap_ops; 53 extern const struct iomap_ops xfs_direct_write_iomap_ops; 54 extern const struct iomap_ops xfs_zoned_direct_write_iomap_ops; 55 extern const struct iomap_ops xfs_read_iomap_ops; 56 extern const struct iomap_ops xfs_seek_iomap_ops; 57 extern const struct iomap_ops xfs_xattr_iomap_ops; 58 extern const struct iomap_ops xfs_dax_write_iomap_ops; 59 60 #endif /* __XFS_IOMAP_H__*/ 61