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-rw-r--r--fs/minix/Kconfig8
-rw-r--r--fs/minix/minix.h74
-rw-r--r--fs/minix/namei.c8
3 files changed, 84 insertions, 6 deletions
diff --git a/fs/minix/Kconfig b/fs/minix/Kconfig
index 0fd7ca994264..6624684dd5de 100644
--- a/fs/minix/Kconfig
+++ b/fs/minix/Kconfig
@@ -15,3 +15,11 @@ config MINIX_FS
module will be called minix. Note that the file system of your root
partition (the one containing the directory /) cannot be compiled as
a module.
+
+config MINIX_FS_NATIVE_ENDIAN
+ def_bool MINIX_FS
+ depends on H8300 || M32R || MICROBLAZE || MIPS || S390 || SUPERH || SPARC || XTENSA || (M68K && !MMU)
+
+config MINIX_FS_BIG_ENDIAN_16BIT_INDEXED
+ def_bool MINIX_FS
+ depends on M68K && MMU
diff --git a/fs/minix/minix.h b/fs/minix/minix.h
index 407b1c84911e..341e2122879a 100644
--- a/fs/minix/minix.h
+++ b/fs/minix/minix.h
@@ -88,4 +88,78 @@ static inline struct minix_inode_info *minix_i(struct inode *inode)
return list_entry(inode, struct minix_inode_info, vfs_inode);
}
+#if defined(CONFIG_MINIX_FS_NATIVE_ENDIAN) && \
+ defined(CONFIG_MINIX_FS_BIG_ENDIAN_16BIT_INDEXED)
+
+#error Minix file system byte order broken
+
+#elif defined(CONFIG_MINIX_FS_NATIVE_ENDIAN)
+
+/*
+ * big-endian 32 or 64 bit indexed bitmaps on big-endian system or
+ * little-endian bitmaps on little-endian system
+ */
+
+#define minix_test_and_set_bit(nr, addr) \
+ __test_and_set_bit((nr), (unsigned long *)(addr))
+#define minix_set_bit(nr, addr) \
+ __set_bit((nr), (unsigned long *)(addr))
+#define minix_test_and_clear_bit(nr, addr) \
+ __test_and_clear_bit((nr), (unsigned long *)(addr))
+#define minix_test_bit(nr, addr) \
+ test_bit((nr), (unsigned long *)(addr))
+#define minix_find_first_zero_bit(addr, size) \
+ find_first_zero_bit((unsigned long *)(addr), (size))
+
+#elif defined(CONFIG_MINIX_FS_BIG_ENDIAN_16BIT_INDEXED)
+
+/*
+ * big-endian 16bit indexed bitmaps
+ */
+
+static inline int minix_find_first_zero_bit(const void *vaddr, unsigned size)
+{
+ const unsigned short *p = vaddr, *addr = vaddr;
+ unsigned short num;
+
+ if (!size)
+ return 0;
+
+ size = (size >> 4) + ((size & 15) > 0);
+ while (*p++ == 0xffff) {
+ if (--size == 0)
+ return (p - addr) << 4;
+ }
+
+ num = *--p;
+ return ((p - addr) << 4) + ffz(num);
+}
+
+#define minix_test_and_set_bit(nr, addr) \
+ __test_and_set_bit((nr) ^ 16, (unsigned long *)(addr))
+#define minix_set_bit(nr, addr) \
+ __set_bit((nr) ^ 16, (unsigned long *)(addr))
+#define minix_test_and_clear_bit(nr, addr) \
+ __test_and_clear_bit((nr) ^ 16, (unsigned long *)(addr))
+
+static inline int minix_test_bit(int nr, const void *vaddr)
+{
+ const unsigned short *p = vaddr;
+ return (p[nr >> 4] & (1U << (nr & 15))) != 0;
+}
+
+#else
+
+/*
+ * little-endian bitmaps
+ */
+
+#define minix_test_and_set_bit __test_and_set_bit_le
+#define minix_set_bit __set_bit_le
+#define minix_test_and_clear_bit __test_and_clear_bit_le
+#define minix_test_bit test_bit_le
+#define minix_find_first_zero_bit find_first_zero_bit_le
+
+#endif
+
#endif /* FS_MINIX_H */
diff --git a/fs/minix/namei.c b/fs/minix/namei.c
index ce7337ddfdbf..6e6777f1b4b2 100644
--- a/fs/minix/namei.c
+++ b/fs/minix/namei.c
@@ -213,7 +213,6 @@ static int minix_rename(struct inode * old_dir, struct dentry *old_dentry,
new_de = minix_find_entry(new_dentry, &new_page);
if (!new_de)
goto out_dir;
- inode_inc_link_count(old_inode);
minix_set_link(new_de, new_page, old_inode);
new_inode->i_ctime = CURRENT_TIME_SEC;
if (dir_de)
@@ -225,18 +224,15 @@ static int minix_rename(struct inode * old_dir, struct dentry *old_dentry,
if (new_dir->i_nlink >= info->s_link_max)
goto out_dir;
}
- inode_inc_link_count(old_inode);
err = minix_add_link(new_dentry, old_inode);
- if (err) {
- inode_dec_link_count(old_inode);
+ if (err)
goto out_dir;
- }
if (dir_de)
inode_inc_link_count(new_dir);
}
minix_delete_entry(old_de, old_page);
- inode_dec_link_count(old_inode);
+ mark_inode_dirty(old_inode);
if (dir_de) {
minix_set_link(dir_de, dir_page, new_dir);