dmaengine: imx-dma: fix slow path issue in prep_dma_cyclic
[linux/fpc-iii.git] / fs / xfs / xfs_types.h
blob61ba1cfa974c7e3e32c493c1317236e2cb397730
1 /*
2 * Copyright (c) 2000-2005 Silicon Graphics, Inc.
3 * All Rights Reserved.
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.
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.
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
18 #ifndef __XFS_TYPES_H__
19 #define __XFS_TYPES_H__
21 #ifdef __KERNEL__
24 * Additional type declarations for XFS
26 typedef signed char __int8_t;
27 typedef unsigned char __uint8_t;
28 typedef signed short int __int16_t;
29 typedef unsigned short int __uint16_t;
30 typedef signed int __int32_t;
31 typedef unsigned int __uint32_t;
32 typedef signed long long int __int64_t;
33 typedef unsigned long long int __uint64_t;
35 typedef __uint32_t prid_t; /* project ID */
36 typedef __uint32_t inst_t; /* an instruction */
38 typedef __s64 xfs_off_t; /* <file offset> type */
39 typedef unsigned long long xfs_ino_t; /* <inode> type */
40 typedef __s64 xfs_daddr_t; /* <disk address> type */
41 typedef char * xfs_caddr_t; /* <core address> type */
42 typedef __u32 xfs_dev_t;
43 typedef __u32 xfs_nlink_t;
45 /* __psint_t is the same size as a pointer */
46 #if (BITS_PER_LONG == 32)
47 typedef __int32_t __psint_t;
48 typedef __uint32_t __psunsigned_t;
49 #elif (BITS_PER_LONG == 64)
50 typedef __int64_t __psint_t;
51 typedef __uint64_t __psunsigned_t;
52 #else
53 #error BITS_PER_LONG must be 32 or 64
54 #endif
56 #endif /* __KERNEL__ */
58 typedef __uint32_t xfs_agblock_t; /* blockno in alloc. group */
59 typedef __uint32_t xfs_agino_t; /* inode # within allocation grp */
60 typedef __uint32_t xfs_extlen_t; /* extent length in blocks */
61 typedef __uint32_t xfs_agnumber_t; /* allocation group number */
62 typedef __int32_t xfs_extnum_t; /* # of extents in a file */
63 typedef __int16_t xfs_aextnum_t; /* # extents in an attribute fork */
64 typedef __int64_t xfs_fsize_t; /* bytes in a file */
65 typedef __uint64_t xfs_ufsize_t; /* unsigned bytes in a file */
67 typedef __int32_t xfs_suminfo_t; /* type of bitmap summary info */
68 typedef __int32_t xfs_rtword_t; /* word type for bitmap manipulations */
70 typedef __int64_t xfs_lsn_t; /* log sequence number */
71 typedef __int32_t xfs_tid_t; /* transaction identifier */
73 typedef __uint32_t xfs_dablk_t; /* dir/attr block number (in file) */
74 typedef __uint32_t xfs_dahash_t; /* dir/attr hash value */
77 * These types are 64 bits on disk but are either 32 or 64 bits in memory.
78 * Disk based types:
80 typedef __uint64_t xfs_dfsbno_t; /* blockno in filesystem (agno|agbno) */
81 typedef __uint64_t xfs_drfsbno_t; /* blockno in filesystem (raw) */
82 typedef __uint64_t xfs_drtbno_t; /* extent (block) in realtime area */
83 typedef __uint64_t xfs_dfiloff_t; /* block number in a file */
84 typedef __uint64_t xfs_dfilblks_t; /* number of blocks in a file */
87 * Memory based types are conditional.
89 #if XFS_BIG_BLKNOS
90 typedef __uint64_t xfs_fsblock_t; /* blockno in filesystem (agno|agbno) */
91 typedef __uint64_t xfs_rfsblock_t; /* blockno in filesystem (raw) */
92 typedef __uint64_t xfs_rtblock_t; /* extent (block) in realtime area */
93 typedef __int64_t xfs_srtblock_t; /* signed version of xfs_rtblock_t */
94 #else
95 typedef __uint32_t xfs_fsblock_t; /* blockno in filesystem (agno|agbno) */
96 typedef __uint32_t xfs_rfsblock_t; /* blockno in filesystem (raw) */
97 typedef __uint32_t xfs_rtblock_t; /* extent (block) in realtime area */
98 typedef __int32_t xfs_srtblock_t; /* signed version of xfs_rtblock_t */
99 #endif
100 typedef __uint64_t xfs_fileoff_t; /* block number in a file */
101 typedef __int64_t xfs_sfiloff_t; /* signed block number in a file */
102 typedef __uint64_t xfs_filblks_t; /* number of blocks in a file */
106 * Null values for the types.
108 #define NULLDFSBNO ((xfs_dfsbno_t)-1)
109 #define NULLDRFSBNO ((xfs_drfsbno_t)-1)
110 #define NULLDRTBNO ((xfs_drtbno_t)-1)
111 #define NULLDFILOFF ((xfs_dfiloff_t)-1)
113 #define NULLFSBLOCK ((xfs_fsblock_t)-1)
114 #define NULLRFSBLOCK ((xfs_rfsblock_t)-1)
115 #define NULLRTBLOCK ((xfs_rtblock_t)-1)
116 #define NULLFILEOFF ((xfs_fileoff_t)-1)
118 #define NULLAGBLOCK ((xfs_agblock_t)-1)
119 #define NULLAGNUMBER ((xfs_agnumber_t)-1)
120 #define NULLEXTNUM ((xfs_extnum_t)-1)
122 #define NULLCOMMITLSN ((xfs_lsn_t)-1)
124 #define NULLFSINO ((xfs_ino_t)-1)
125 #define NULLAGINO ((xfs_agino_t)-1)
128 * Max values for extlen, extnum, aextnum.
130 #define MAXEXTLEN ((xfs_extlen_t)0x001fffff) /* 21 bits */
131 #define MAXEXTNUM ((xfs_extnum_t)0x7fffffff) /* signed int */
132 #define MAXAEXTNUM ((xfs_aextnum_t)0x7fff) /* signed short */
135 * Minimum and maximum blocksize and sectorsize.
136 * The blocksize upper limit is pretty much arbitrary.
137 * The sectorsize upper limit is due to sizeof(sb_sectsize).
139 #define XFS_MIN_BLOCKSIZE_LOG 9 /* i.e. 512 bytes */
140 #define XFS_MAX_BLOCKSIZE_LOG 16 /* i.e. 65536 bytes */
141 #define XFS_MIN_BLOCKSIZE (1 << XFS_MIN_BLOCKSIZE_LOG)
142 #define XFS_MAX_BLOCKSIZE (1 << XFS_MAX_BLOCKSIZE_LOG)
143 #define XFS_MIN_SECTORSIZE_LOG 9 /* i.e. 512 bytes */
144 #define XFS_MAX_SECTORSIZE_LOG 15 /* i.e. 32768 bytes */
145 #define XFS_MIN_SECTORSIZE (1 << XFS_MIN_SECTORSIZE_LOG)
146 #define XFS_MAX_SECTORSIZE (1 << XFS_MAX_SECTORSIZE_LOG)
149 * Min numbers of data/attr fork btree root pointers.
151 #define MINDBTPTRS 3
152 #define MINABTPTRS 2
155 * MAXNAMELEN is the length (including the terminating null) of
156 * the longest permissible file (component) name.
158 #define MAXNAMELEN 256
160 typedef enum {
161 XFS_LOOKUP_EQi, XFS_LOOKUP_LEi, XFS_LOOKUP_GEi
162 } xfs_lookup_t;
164 typedef enum {
165 XFS_BTNUM_BNOi, XFS_BTNUM_CNTi, XFS_BTNUM_BMAPi, XFS_BTNUM_INOi,
166 XFS_BTNUM_MAX
167 } xfs_btnum_t;
169 struct xfs_name {
170 const unsigned char *name;
171 int len;
174 #endif /* __XFS_TYPES_H__ */