"Manish Katiyar" <mkatiyar@xxxxxxxxx> writes in
gmane.linux.file-systems:
> For two unsigned values the check "block+count < block" is always
> false. Thus the below patch removes that condition.
>
> =============================================================
>
> Signed-off-by: Manish Katiyar <mkatiyar@xxxxxxxxx>
>
> --- a/fs/ext4/balloc.c 2008-05-18 18:07:45.000000000 +0530
> +++ b/fs/ext4/balloc.c 2008-06-01 00:05:48.000000000 +0530
> @@ -619,7 +619,6 @@
> sbi = EXT4_SB(sb);
> es = sbi->s_es;
> if (block < le32_to_cpu(es->s_first_data_block) ||
> - block + count < block ||
> block + count > ext4_blocks_count(es)) {
> ext4_error (sb, "ext4_free_blocks",
> "Freeing blocks not in datazone - "
>
>
> =============================================================
Hmm. Consider situation where block + count > max unsigned value
mathematically
in that case
block + count < block
expression may be true
> --
> Thanks & Regards,
> ********************************************
> Manish Katiyar ( http://mkatiyar.googlepages.com )
> 3rd Floor, Fair Winds Block
> EGL Software Park
> Off Intermediate Ring Road
> Bangalore 560071, India
> ***********************************************
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/ Kari Hurtta
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