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    Subject[PATCH v4 14/24] ext4: 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: "Theodore Ts'o" <>
    Cc: Andreas Dilger <>
    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/ext4/ext4.h | 18 ++++++++++++------
    1 files changed, 12 insertions(+), 6 deletions(-)

    diff --git a/fs/ext4/ext4.h b/fs/ext4/ext4.h
    index 1de65f5..eaad5fc 100644
    --- a/fs/ext4/ext4.h
    +++ b/fs/ext4/ext4.h
    @@ -922,14 +922,20 @@ struct ext4_inode_info {
    #define test_opt2(sb, opt) (EXT4_SB(sb)->s_mount_opt2 & \

    -#define ext4_set_bit ext2_set_bit
    +#define ext4_set_bit(nr, addr) \
    + __test_and_set_bit_le((nr), (unsigned long *)(addr))
    #define ext4_set_bit_atomic ext2_set_bit_atomic
    -#define ext4_clear_bit ext2_clear_bit
    +#define ext4_clear_bit(nr, addr) \
    + __test_and_clear_bit_le((nr), (unsigned long *)(addr))
    #define ext4_clear_bit_atomic ext2_clear_bit_atomic
    -#define ext4_test_bit ext2_test_bit
    -#define ext4_find_first_zero_bit ext2_find_first_zero_bit
    -#define ext4_find_next_zero_bit ext2_find_next_zero_bit
    -#define ext4_find_next_bit ext2_find_next_bit
    +#define ext4_test_bit(nr, addr) \
    + test_bit_le((nr), (unsigned long *)(addr))
    +#define ext4_find_first_zero_bit(addr, size) \
    + find_first_zero_bit_le((unsigned long *)(addr), (size))
    +#define ext4_find_next_zero_bit(addr, size, off) \
    + find_next_zero_bit_le((unsigned long *)(addr), (size), (off))
    +#define ext4_find_next_bit(addr, size, off) \
    + find_next_bit_le((unsigned long *)(addr), (size), (off))

    * Maximal mount counts between two filesystem checks

     \ /
      Last update: 2011-01-16 14:13    [W:0.022 / U:167.564 seconds]
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