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Subject[PATCH v4 18/24] udf: use little-endian bitops
As a preparation for removing ext2 non-atomic bit operations from
asm/bitops.h. This converts ext2 non-atomic bit operations to
little-endian bit operations.

Signed-off-by: Akinobu Mita <>
Acked-by: Jan Kara <>
Signed-off-by: Andrew Morton <>

Change from v3:
- change to the post-fix notation e.g. s/test_le_bit/test_bit_le/

The whole series is available in the git repository at:
git:// le-bitops-v4

fs/udf/balloc.c | 11 +++++++----
1 files changed, 7 insertions(+), 4 deletions(-)

diff --git a/fs/udf/balloc.c b/fs/udf/balloc.c
index 306ee39..7e71658 100644
--- a/fs/udf/balloc.c
+++ b/fs/udf/balloc.c
@@ -27,11 +27,14 @@
#include "udf_i.h"
#include "udf_sb.h"

-#define udf_clear_bit(nr, addr) ext2_clear_bit(nr, addr)
-#define udf_set_bit(nr, addr) ext2_set_bit(nr, addr)
-#define udf_test_bit(nr, addr) ext2_test_bit(nr, addr)
+#define udf_clear_bit(nr, addr) \
+ __test_and_clear_bit_le(nr, (unsigned long *)(addr))
+#define udf_set_bit(nr, addr) \
+ __test_and_set_bit_le(nr, (unsigned long *)(addr))
+#define udf_test_bit(nr, addr) \
+ test_bit_le(nr, (unsigned long *)(addr))
#define udf_find_next_one_bit(addr, size, offset) \
- ext2_find_next_bit(addr, size, offset)
+ find_next_bit_le((unsigned long *)(addr), size, offset)

static int read_block_bitmap(struct super_block *sb,
struct udf_bitmap *bitmap, unsigned int block,

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