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1da177e4 | 1 | /* |
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2 | * Copyright (c) 2000-2003,2005 Silicon Graphics, Inc. |
3 | * All Rights Reserved. | |
1da177e4 | 4 | * |
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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 | |
1da177e4 LT |
7 | * published by the Free Software Foundation. |
8 | * | |
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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. | |
1da177e4 | 13 | * |
7b718769 NS |
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 | |
1da177e4 LT |
17 | */ |
18 | #ifndef __XFS_LRW_H__ | |
19 | #define __XFS_LRW_H__ | |
20 | ||
21 | struct vnode; | |
22 | struct bhv_desc; | |
23 | struct xfs_mount; | |
24 | struct xfs_iocore; | |
25 | struct xfs_inode; | |
26 | struct xfs_bmbt_irec; | |
27 | struct xfs_buf; | |
28 | struct xfs_iomap; | |
29 | ||
30 | #if defined(XFS_RW_TRACE) | |
31 | /* | |
32 | * Defines for the trace mechanisms in xfs_lrw.c. | |
33 | */ | |
34 | #define XFS_RW_KTRACE_SIZE 128 | |
35 | ||
36 | #define XFS_READ_ENTER 1 | |
37 | #define XFS_WRITE_ENTER 2 | |
38 | #define XFS_IOMAP_READ_ENTER 3 | |
39 | #define XFS_IOMAP_WRITE_ENTER 4 | |
40 | #define XFS_IOMAP_READ_MAP 5 | |
41 | #define XFS_IOMAP_WRITE_MAP 6 | |
42 | #define XFS_IOMAP_WRITE_NOSPACE 7 | |
43 | #define XFS_ITRUNC_START 8 | |
44 | #define XFS_ITRUNC_FINISH1 9 | |
45 | #define XFS_ITRUNC_FINISH2 10 | |
46 | #define XFS_CTRUNC1 11 | |
47 | #define XFS_CTRUNC2 12 | |
48 | #define XFS_CTRUNC3 13 | |
49 | #define XFS_CTRUNC4 14 | |
50 | #define XFS_CTRUNC5 15 | |
51 | #define XFS_CTRUNC6 16 | |
52 | #define XFS_BUNMAPI 17 | |
53 | #define XFS_INVAL_CACHED 18 | |
54 | #define XFS_DIORD_ENTER 19 | |
55 | #define XFS_DIOWR_ENTER 20 | |
56 | #define XFS_SENDFILE_ENTER 21 | |
57 | #define XFS_WRITEPAGE_ENTER 22 | |
58 | #define XFS_RELEASEPAGE_ENTER 23 | |
bcec2b7f NS |
59 | #define XFS_INVALIDPAGE_ENTER 24 |
60 | #define XFS_IOMAP_ALLOC_ENTER 25 | |
61 | #define XFS_IOMAP_ALLOC_MAP 26 | |
62 | #define XFS_IOMAP_UNWRITTEN 27 | |
1da177e4 LT |
63 | extern void xfs_rw_enter_trace(int, struct xfs_iocore *, |
64 | void *, size_t, loff_t, int); | |
65 | extern void xfs_inval_cached_trace(struct xfs_iocore *, | |
66 | xfs_off_t, xfs_off_t, xfs_off_t, xfs_off_t); | |
67 | #else | |
68 | #define xfs_rw_enter_trace(tag, io, data, size, offset, ioflags) | |
69 | #define xfs_inval_cached_trace(io, offset, len, first, last) | |
70 | #endif | |
71 | ||
72 | /* | |
73 | * Maximum count of bmaps used by read and write paths. | |
74 | */ | |
75 | #define XFS_MAX_RW_NBMAPS 4 | |
76 | ||
77 | extern int xfs_bmap(struct bhv_desc *, xfs_off_t, ssize_t, int, | |
78 | struct xfs_iomap *, int *); | |
79 | extern int xfsbdstrat(struct xfs_mount *, struct xfs_buf *); | |
80 | extern int xfs_bdstrat_cb(struct xfs_buf *); | |
81 | ||
82 | extern int xfs_zero_eof(struct vnode *, struct xfs_iocore *, xfs_off_t, | |
83 | xfs_fsize_t, xfs_fsize_t); | |
1da177e4 LT |
84 | extern ssize_t xfs_read(struct bhv_desc *, struct kiocb *, |
85 | const struct iovec *, unsigned int, | |
86 | loff_t *, int, struct cred *); | |
87 | extern ssize_t xfs_write(struct bhv_desc *, struct kiocb *, | |
88 | const struct iovec *, unsigned int, | |
89 | loff_t *, int, struct cred *); | |
90 | extern ssize_t xfs_sendfile(struct bhv_desc *, struct file *, | |
91 | loff_t *, int, size_t, read_actor_t, | |
92 | void *, struct cred *); | |
93 | ||
94 | extern int xfs_dev_is_read_only(struct xfs_mount *, char *); | |
95 | ||
1da177e4 | 96 | #endif /* __XFS_LRW_H__ */ |