| 1 | // SPDX-License-Identifier: GPL-2.0 |
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| 2 | /* |
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| 3 | * Copyright (c) 2003-2005 Silicon Graphics, Inc. |
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| 4 | * All Rights Reserved. |
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| 5 | */ |
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| 6 | #ifndef __XFS_IOMAP_H__ |
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| 7 | #define __XFS_IOMAP_H__ |
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| 8 | |
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| 9 | #include <linux/iomap.h> |
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| 10 | |
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| 11 | struct xfs_inode; |
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| 12 | struct xfs_bmbt_irec; |
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| 13 | |
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| 14 | int xfs_iomap_write_direct(struct xfs_inode *ip, xfs_fileoff_t offset_fsb, |
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| 15 | xfs_fileoff_t count_fsb, unsigned int flags, |
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| 16 | struct xfs_bmbt_irec *imap, u64 *sequence); |
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| 17 | int xfs_iomap_write_unwritten(struct xfs_inode *, xfs_off_t, xfs_off_t, bool); |
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| 18 | xfs_fileoff_t xfs_iomap_eof_align_last_fsb(struct xfs_inode *ip, |
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| 19 | xfs_fileoff_t end_fsb); |
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| 20 | |
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| 21 | u64 xfs_iomap_inode_sequence(struct xfs_inode *ip, u16 iomap_flags); |
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| 22 | int xfs_bmbt_to_iomap(struct xfs_inode *ip, struct iomap *iomap, |
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| 23 | struct xfs_bmbt_irec *imap, unsigned int mapping_flags, |
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| 24 | u16 iomap_flags, u64 sequence_cookie); |
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| 25 | |
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| 26 | int xfs_zero_range(struct xfs_inode *ip, loff_t pos, loff_t len, |
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| 27 | bool *did_zero); |
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| 28 | int xfs_truncate_page(struct xfs_inode *ip, loff_t pos, bool *did_zero); |
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| 29 | |
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| 30 | static inline xfs_filblks_t |
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| 31 | xfs_aligned_fsb_count( |
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| 32 | xfs_fileoff_t offset_fsb, |
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| 33 | xfs_filblks_t count_fsb, |
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| 34 | xfs_extlen_t extsz) |
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| 35 | { |
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| 36 | if (extsz) { |
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| 37 | xfs_extlen_t align; |
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| 38 | |
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| 39 | div_u64_rem(dividend: offset_fsb, divisor: extsz, remainder: &align); |
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| 40 | if (align) |
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| 41 | count_fsb += align; |
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| 42 | div_u64_rem(count_fsb, extsz, &align); |
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| 43 | if (align) |
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| 44 | count_fsb += extsz - align; |
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| 45 | } |
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| 46 | |
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| 47 | return count_fsb; |
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| 48 | } |
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| 49 | |
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| 50 | extern const struct iomap_ops xfs_buffered_write_iomap_ops; |
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| 51 | extern const struct iomap_ops xfs_page_mkwrite_iomap_ops; |
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| 52 | extern const struct iomap_ops xfs_direct_write_iomap_ops; |
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| 53 | extern const struct iomap_ops xfs_read_iomap_ops; |
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| 54 | extern const struct iomap_ops xfs_seek_iomap_ops; |
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| 55 | extern const struct iomap_ops xfs_xattr_iomap_ops; |
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| 56 | extern const struct iomap_ops xfs_dax_write_iomap_ops; |
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| 57 | |
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| 58 | #endif /* __XFS_IOMAP_H__*/ |
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| 59 | |
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