minix.h (2d8ad8719591fa803b0d589ed057fa46f49b7155) minix.h (61f2e7b0f474225b4226772830ae4b29a3a21f8d)
1#ifndef FS_MINIX_H
2#define FS_MINIX_H
3
4#include <linux/fs.h>
5#include <linux/pagemap.h>
6#include <linux/minix_fs.h>
7
8#define INODE_VERSION(inode) minix_sb(inode->i_sb)->s_version

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83 return sb->s_fs_info;
84}
85
86static inline struct minix_inode_info *minix_i(struct inode *inode)
87{
88 return list_entry(inode, struct minix_inode_info, vfs_inode);
89}
90
1#ifndef FS_MINIX_H
2#define FS_MINIX_H
3
4#include <linux/fs.h>
5#include <linux/pagemap.h>
6#include <linux/minix_fs.h>
7
8#define INODE_VERSION(inode) minix_sb(inode->i_sb)->s_version

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83 return sb->s_fs_info;
84}
85
86static inline struct minix_inode_info *minix_i(struct inode *inode)
87{
88 return list_entry(inode, struct minix_inode_info, vfs_inode);
89}
90
91#if defined(CONFIG_MINIX_FS_NATIVE_ENDIAN) && \
92 defined(CONFIG_MINIX_FS_BIG_ENDIAN_16BIT_INDEXED)
93
94#error Minix file system byte order broken
95
96#elif defined(CONFIG_MINIX_FS_NATIVE_ENDIAN)
97
98/*
99 * big-endian 32 or 64 bit indexed bitmaps on big-endian system or
100 * little-endian bitmaps on little-endian system
101 */
102
103#define minix_test_and_set_bit(nr, addr) \
104 __test_and_set_bit((nr), (unsigned long *)(addr))
105#define minix_set_bit(nr, addr) \
106 __set_bit((nr), (unsigned long *)(addr))
107#define minix_test_and_clear_bit(nr, addr) \
108 __test_and_clear_bit((nr), (unsigned long *)(addr))
109#define minix_test_bit(nr, addr) \
110 test_bit((nr), (unsigned long *)(addr))
111#define minix_find_first_zero_bit(addr, size) \
112 find_first_zero_bit((unsigned long *)(addr), (size))
113
114#elif defined(CONFIG_MINIX_FS_BIG_ENDIAN_16BIT_INDEXED)
115
116/*
117 * big-endian 16bit indexed bitmaps
118 */
119
120static inline int minix_find_first_zero_bit(const void *vaddr, unsigned size)
121{
122 const unsigned short *p = vaddr, *addr = vaddr;
123 unsigned short num;
124
125 if (!size)
126 return 0;
127
128 size = (size >> 4) + ((size & 15) > 0);
129 while (*p++ == 0xffff) {
130 if (--size == 0)
131 return (p - addr) << 4;
132 }
133
134 num = *--p;
135 return ((p - addr) << 4) + ffz(num);
136}
137
138#define minix_test_and_set_bit(nr, addr) \
139 __test_and_set_bit((nr) ^ 16, (unsigned long *)(addr))
140#define minix_set_bit(nr, addr) \
141 __set_bit((nr) ^ 16, (unsigned long *)(addr))
142#define minix_test_and_clear_bit(nr, addr) \
143 __test_and_clear_bit((nr) ^ 16, (unsigned long *)(addr))
144
145static inline int minix_test_bit(int nr, const void *vaddr)
146{
147 const unsigned short *p = vaddr;
148 return (p[nr >> 4] & (1U << (nr & 15))) != 0;
149}
150
151#else
152
153/*
154 * little-endian bitmaps
155 */
156
157#define minix_test_and_set_bit __test_and_set_bit_le
158#define minix_set_bit __set_bit_le
159#define minix_test_and_clear_bit __test_and_clear_bit_le
160#define minix_test_bit test_bit_le
161#define minix_find_first_zero_bit find_first_zero_bit_le
162
163#endif
164
91#endif /* FS_MINIX_H */
165#endif /* FS_MINIX_H */