[PATCH] m68k: fix undefined reference to generic_find_next_zero_le_bit

This patch reverts ext2 bitmap functions.

Signed-off-by: Akinobu Mita <mita@miraclelinux.com>
Signed-off-by: Andrew Morton <akpm@osdl.org>
Signed-off-by: Linus Torvalds <torvalds@osdl.org>

1 files changed, 52 insertions, 2 deletions

diff --git a/include/asm-m68k/bitops.h b/include/asm-m68k/bitops.h
index e845daac48ad..1a61fdb56aaf 100644
--- a/include/asm-m68k/bitops.h
+++ b/include/asm-m68k/bitops.h
@@ -351,11 +351,61 @@ static inline int minix_test_bit(int nr, const void *vaddr)
 
 /* Bitmap functions for the ext2 filesystem. */
 
-#include <asm-generic/bitops/ext2-non-atomic.h>
-
+#define ext2_set_bit(nr, addr)                  __test_and_set_bit((nr) ^ 24, (unsigned long *)(addr))
 #define ext2_set_bit_atomic(lock, nr, addr)     test_and_set_bit((nr) ^ 24, (unsigned long *)(addr))
+#define ext2_clear_bit(nr, addr)                __test_and_clear_bit((nr) ^ 24, (unsigned long *)(addr))
 #define ext2_clear_bit_atomic(lock, nr, addr)   test_and_clear_bit((nr) ^ 24, (unsigned long *)(addr))
 
+static inline int ext2_test_bit(int nr, const void *vaddr)
+{
+        const unsigned char *p = vaddr;
+        return (p[nr >> 3] & (1U << (nr & 7))) != 0;
+}
+
+static inline int ext2_find_first_zero_bit(const void *vaddr, unsigned size)
+{
+        const unsigned long *p = vaddr, *addr = vaddr;
+        int res;
+
+        if (!size)
+                return 0;
+
+        size = (size >> 5) + ((size & 31) > 0);
+        while (*p++ == ~0UL)
+        {
+                if (--size == 0)
+                        return (p - addr) << 5;
+        }
+
+        --p;
+        for (res = 0; res < 32; res++)
+                if (!ext2_test_bit (res, p))
+                        break;
+        return (p - addr) * 32 + res;
+}
+
+static inline int ext2_find_next_zero_bit(const void *vaddr, unsigned size,
+                                          unsigned offset)
+{
+        const unsigned long *addr = vaddr;
+        const unsigned long *p = addr + (offset >> 5);
+        int bit = offset & 31UL, res;
+
+        if (offset >= size)
+                return size;
+
+        if (bit) {
+                /* Look for zero in first longword */
+                for (res = bit; res < 32; res++)
+                        if (!ext2_test_bit (res, p))
+                                return (p - addr) * 32 + res;
+                p++;
+        }
+        /* No zero yet, search remaining full bytes for a zero */
+        res = ext2_find_first_zero_bit (p, size - 32 * (p - addr));
+        return (p - addr) * 32 + res;
+}
+
 #endif /* __KERNEL__ */
 
 #endif /* _M68K_BITOPS_H */