Re: [PATCH] ext2: Remove useless reset code

From: Jan Kara
Date: Mon Jan 28 2019 - 09:48:53 EST


On Fri 25-01-19 22:01:04, Liu Xiang wrote:
> If ((char *)de == dir_end) is true, the name_len will not be used
> in the subsequent routine. So the reset code can be removed.
>
> Signed-off-by: Liu Xiang <liu.xiang6@xxxxxxxxxx>

Thanks for the patch. I agree with your analysis but I prefer to keep the
code as is - it prevents warnings about uninitialized variable being used
for compilers than cannot infer that and also for humans reading the code
is easier this way.

Honza

> ---
> fs/ext2/dir.c | 1 -
> 1 file changed, 1 deletion(-)
>
> diff --git a/fs/ext2/dir.c b/fs/ext2/dir.c
> index 3b8114d..5ec497f 100644
> --- a/fs/ext2/dir.c
> +++ b/fs/ext2/dir.c
> @@ -517,7 +517,6 @@ int ext2_add_link (struct dentry *dentry, struct inode *inode)
> while ((char *)de <= kaddr) {
> if ((char *)de == dir_end) {
> /* We hit i_size */
> - name_len = 0;
> rec_len = chunk_size;
> de->rec_len = ext2_rec_len_to_disk(chunk_size);
> de->inode = 0;
> --
> 1.9.1
>
>
--
Jan Kara <jack@xxxxxxxx>
SUSE Labs, CR