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SubjectRe: [PATCH v2] ext3: use proper little-endian bitops
On Wed 01-06-11 23:34:04, Akinobu Mita wrote:
> ext3_{set,clear}_bit() is defined as __test_and_{set,clear}_bit_le()
> for ext3. But all ext3_{set,clear}_bit() calls ignore return values.
> So these can be replaced with __{set,clear}_bit_le().
>
> This changes ext3_{set,clear}_bit safely, because if someone uses
> these macros without noticing the change, new ext3_{set,clear}_bit
> don't have return value and causes compiler errors where the return
> value is used.
>
> This also removes unused ext3_find_first_zero_bit().
Thanks. Merged.

Honza
>
> Signed-off-by: Akinobu Mita <akinobu.mita@gmail.com>
> Cc: Jan Kara <jack@suse.cz>
> Cc: Andrew Morton <akpm@linux-foundation.org>
> Cc: Andreas Dilger <adilger.kernel@dilger.ca>
> Cc: linux-ext4@vger.kernel.org
> ---
> v2: rewritten to keep ext3_*_bit() macros
>
> include/linux/ext3_fs.h | 5 ++---
> 1 files changed, 2 insertions(+), 3 deletions(-)
>
> diff --git a/include/linux/ext3_fs.h b/include/linux/ext3_fs.h
> index 5e06acf..50f21ee 100644
> --- a/include/linux/ext3_fs.h
> +++ b/include/linux/ext3_fs.h
> @@ -418,12 +418,11 @@ struct ext3_inode {
> #define EXT2_MOUNT_DATA_FLAGS EXT3_MOUNT_DATA_FLAGS
> #endif
>
> -#define ext3_set_bit __test_and_set_bit_le
> +#define ext3_set_bit __set_bit_le
> #define ext3_set_bit_atomic ext2_set_bit_atomic
> -#define ext3_clear_bit __test_and_clear_bit_le
> +#define ext3_clear_bit __clear_bit_le
> #define ext3_clear_bit_atomic ext2_clear_bit_atomic
> #define ext3_test_bit test_bit_le
> -#define ext3_find_first_zero_bit find_first_zero_bit_le
> #define ext3_find_next_zero_bit find_next_zero_bit_le
>
> /*
> --
> 1.7.4.4
>
--
Jan Kara <jack@suse.cz>
SUSE Labs, CR


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