Andrew Scull | b4b6d4a | 2019-01-02 15:54:55 +0000 | [diff] [blame] | 1 | // SPDX-License-Identifier: GPL-2.0 |
| 2 | /* |
| 3 | * Copyright (c) 2000-2006 Silicon Graphics, Inc. |
| 4 | * All Rights Reserved. |
| 5 | */ |
| 6 | #ifndef __XFS_BMAP_UTIL_H__ |
| 7 | #define __XFS_BMAP_UTIL_H__ |
| 8 | |
| 9 | /* Kernel only BMAP related definitions and functions */ |
| 10 | |
| 11 | struct xfs_bmbt_irec; |
| 12 | struct xfs_extent_free_item; |
| 13 | struct xfs_ifork; |
| 14 | struct xfs_inode; |
| 15 | struct xfs_mount; |
| 16 | struct xfs_trans; |
| 17 | struct xfs_bmalloca; |
| 18 | |
| 19 | #ifdef CONFIG_XFS_RT |
| 20 | int xfs_bmap_rtalloc(struct xfs_bmalloca *ap); |
| 21 | #else /* !CONFIG_XFS_RT */ |
| 22 | /* |
| 23 | * Attempts to allocate RT extents when RT is disable indicates corruption and |
| 24 | * should trigger a shutdown. |
| 25 | */ |
| 26 | static inline int |
| 27 | xfs_bmap_rtalloc(struct xfs_bmalloca *ap) |
| 28 | { |
| 29 | return -EFSCORRUPTED; |
| 30 | } |
| 31 | #endif /* CONFIG_XFS_RT */ |
| 32 | |
| 33 | int xfs_bmap_eof(struct xfs_inode *ip, xfs_fileoff_t endoff, |
| 34 | int whichfork, int *eof); |
| 35 | int xfs_bmap_punch_delalloc_range(struct xfs_inode *ip, |
| 36 | xfs_fileoff_t start_fsb, xfs_fileoff_t length); |
| 37 | |
| 38 | struct kgetbmap { |
| 39 | __s64 bmv_offset; /* file offset of segment in blocks */ |
| 40 | __s64 bmv_block; /* starting block (64-bit daddr_t) */ |
| 41 | __s64 bmv_length; /* length of segment, blocks */ |
| 42 | __s32 bmv_oflags; /* output flags */ |
| 43 | }; |
| 44 | int xfs_getbmap(struct xfs_inode *ip, struct getbmapx *bmv, |
| 45 | struct kgetbmap *out); |
| 46 | |
| 47 | /* functions in xfs_bmap.c that are only needed by xfs_bmap_util.c */ |
| 48 | int xfs_bmap_extsize_align(struct xfs_mount *mp, struct xfs_bmbt_irec *gotp, |
| 49 | struct xfs_bmbt_irec *prevp, xfs_extlen_t extsz, |
| 50 | int rt, int eof, int delay, int convert, |
| 51 | xfs_fileoff_t *offp, xfs_extlen_t *lenp); |
| 52 | void xfs_bmap_adjacent(struct xfs_bmalloca *ap); |
| 53 | int xfs_bmap_last_extent(struct xfs_trans *tp, struct xfs_inode *ip, |
| 54 | int whichfork, struct xfs_bmbt_irec *rec, |
| 55 | int *is_empty); |
| 56 | |
| 57 | /* preallocation and hole punch interface */ |
| 58 | int xfs_alloc_file_space(struct xfs_inode *ip, xfs_off_t offset, |
| 59 | xfs_off_t len, int alloc_type); |
| 60 | int xfs_free_file_space(struct xfs_inode *ip, xfs_off_t offset, |
| 61 | xfs_off_t len); |
| 62 | int xfs_zero_file_space(struct xfs_inode *ip, xfs_off_t offset, |
| 63 | xfs_off_t len); |
| 64 | int xfs_collapse_file_space(struct xfs_inode *, xfs_off_t offset, |
| 65 | xfs_off_t len); |
| 66 | int xfs_insert_file_space(struct xfs_inode *, xfs_off_t offset, |
| 67 | xfs_off_t len); |
| 68 | |
| 69 | /* EOF block manipulation functions */ |
| 70 | bool xfs_can_free_eofblocks(struct xfs_inode *ip, bool force); |
| 71 | int xfs_free_eofblocks(struct xfs_inode *ip); |
| 72 | |
| 73 | int xfs_swap_extents(struct xfs_inode *ip, struct xfs_inode *tip, |
| 74 | struct xfs_swapext *sx); |
| 75 | |
| 76 | xfs_daddr_t xfs_fsb_to_db(struct xfs_inode *ip, xfs_fsblock_t fsb); |
| 77 | |
| 78 | xfs_extnum_t xfs_bmap_count_leaves(struct xfs_ifork *ifp, xfs_filblks_t *count); |
| 79 | int xfs_bmap_count_blocks(struct xfs_trans *tp, struct xfs_inode *ip, |
| 80 | int whichfork, xfs_extnum_t *nextents, |
| 81 | xfs_filblks_t *count); |
| 82 | |
David Brazdil | 0f672f6 | 2019-12-10 10:32:29 +0000 | [diff] [blame^] | 83 | int xfs_flush_unmap_range(struct xfs_inode *ip, xfs_off_t offset, |
| 84 | xfs_off_t len); |
| 85 | |
Andrew Scull | b4b6d4a | 2019-01-02 15:54:55 +0000 | [diff] [blame] | 86 | #endif /* __XFS_BMAP_UTIL_H__ */ |