Commit | Line | Data |
---|---|---|
68988114 DC |
1 | /* |
2 | * Copyright (c) 2000-2006 Silicon Graphics, Inc. | |
3 | * All Rights Reserved. | |
4 | * | |
5 | * This program is free software; you can redistribute it and/or | |
6 | * modify it under the terms of the GNU General Public License as | |
7 | * published by the Free Software Foundation. | |
8 | * | |
9 | * This program is distributed in the hope that it would be useful, | |
10 | * but WITHOUT ANY WARRANTY; without even the implied warranty of | |
11 | * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the | |
12 | * GNU General Public License for more details. | |
13 | * | |
14 | * You should have received a copy of the GNU General Public License | |
15 | * along with this program; if not, write the Free Software Foundation, | |
16 | * Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA | |
17 | */ | |
18 | #ifndef __XFS_BMAP_UTIL_H__ | |
19 | #define __XFS_BMAP_UTIL_H__ | |
20 | ||
21 | /* Kernel only BMAP related definitions and functions */ | |
22 | ||
23 | struct xfs_bmbt_irec; | |
c24b5dfa | 24 | struct xfs_bmap_free_item; |
68988114 DC |
25 | struct xfs_ifork; |
26 | struct xfs_inode; | |
27 | struct xfs_mount; | |
28 | struct xfs_trans; | |
29 | ||
30 | /* | |
31 | * Argument structure for xfs_bmap_alloc. | |
32 | */ | |
33 | struct xfs_bmalloca { | |
34 | xfs_fsblock_t *firstblock; /* i/o first block allocated */ | |
35 | struct xfs_bmap_free *flist; /* bmap freelist */ | |
36 | struct xfs_trans *tp; /* transaction pointer */ | |
37 | struct xfs_inode *ip; /* incore inode pointer */ | |
38 | struct xfs_bmbt_irec prev; /* extent before the new one */ | |
39 | struct xfs_bmbt_irec got; /* extent after, or delayed */ | |
40 | ||
41 | xfs_fileoff_t offset; /* offset in file filling in */ | |
42 | xfs_extlen_t length; /* i/o length asked/allocated */ | |
43 | xfs_fsblock_t blkno; /* starting block of new extent */ | |
44 | ||
45 | struct xfs_btree_cur *cur; /* btree cursor */ | |
46 | xfs_extnum_t idx; /* current extent index */ | |
47 | int nallocs;/* number of extents alloc'd */ | |
48 | int logflags;/* flags for transaction logging */ | |
49 | ||
50 | xfs_extlen_t total; /* total blocks needed for xaction */ | |
51 | xfs_extlen_t minlen; /* minimum allocation size (blocks) */ | |
52 | xfs_extlen_t minleft; /* amount must be left after alloc */ | |
53 | char eof; /* set if allocating past last extent */ | |
54 | char wasdel; /* replacing a delayed allocation */ | |
55 | char userdata;/* set if is user data */ | |
56 | char aeof; /* allocated space at eof */ | |
57 | char conv; /* overwriting unwritten extents */ | |
58 | char stack_switch; | |
59 | int flags; | |
60 | struct completion *done; | |
61 | struct work_struct work; | |
62 | int result; | |
63 | }; | |
64 | ||
65 | int xfs_bmap_finish(struct xfs_trans **tp, struct xfs_bmap_free *flist, | |
66 | int *committed); | |
67 | int xfs_bmap_rtalloc(struct xfs_bmalloca *ap); | |
68 | int xfs_bmapi_allocate(struct xfs_bmalloca *args); | |
69 | int __xfs_bmapi_allocate(struct xfs_bmalloca *args); | |
70 | int xfs_bmap_eof(struct xfs_inode *ip, xfs_fileoff_t endoff, | |
71 | int whichfork, int *eof); | |
72 | int xfs_bmap_count_blocks(struct xfs_trans *tp, struct xfs_inode *ip, | |
73 | int whichfork, int *count); | |
74 | int xfs_bmap_punch_delalloc_range(struct xfs_inode *ip, | |
75 | xfs_fileoff_t start_fsb, xfs_fileoff_t length); | |
76 | ||
77 | /* bmap to userspace formatter - copy to user & advance pointer */ | |
78 | typedef int (*xfs_bmap_format_t)(void **, struct getbmapx *, int *); | |
79 | int xfs_getbmap(struct xfs_inode *ip, struct getbmapx *bmv, | |
80 | xfs_bmap_format_t formatter, void *arg); | |
81 | ||
82 | /* functions in xfs_bmap.c that are only needed by xfs_bmap_util.c */ | |
83 | void xfs_bmap_del_free(struct xfs_bmap_free *flist, | |
84 | struct xfs_bmap_free_item *prev, | |
85 | struct xfs_bmap_free_item *free); | |
86 | int xfs_bmap_extsize_align(struct xfs_mount *mp, struct xfs_bmbt_irec *gotp, | |
87 | struct xfs_bmbt_irec *prevp, xfs_extlen_t extsz, | |
88 | int rt, int eof, int delay, int convert, | |
89 | xfs_fileoff_t *offp, xfs_extlen_t *lenp); | |
90 | void xfs_bmap_adjacent(struct xfs_bmalloca *ap); | |
91 | int xfs_bmap_last_extent(struct xfs_trans *tp, struct xfs_inode *ip, | |
92 | int whichfork, struct xfs_bmbt_irec *rec, | |
93 | int *is_empty); | |
94 | ||
c24b5dfa DC |
95 | /* preallocation and hole punch interface */ |
96 | int xfs_change_file_space(struct xfs_inode *ip, int cmd, | |
97 | xfs_flock64_t *bf, xfs_off_t offset, | |
98 | int attr_flags); | |
99 | ||
100 | /* EOF block manipulation functions */ | |
101 | bool xfs_can_free_eofblocks(struct xfs_inode *ip, bool force); | |
102 | int xfs_free_eofblocks(struct xfs_mount *mp, struct xfs_inode *ip, | |
103 | bool need_iolock); | |
104 | ||
a133d952 DC |
105 | int xfs_swap_extents(struct xfs_inode *ip, struct xfs_inode *tip, |
106 | struct xfs_swapext *sx); | |
107 | ||
68988114 DC |
108 | xfs_daddr_t xfs_fsb_to_db(struct xfs_inode *ip, xfs_fsblock_t fsb); |
109 | ||
110 | #endif /* __XFS_BMAP_UTIL_H__ */ |