[Ocfs2-devel] ocfs2: should not use le32_add_cpu to set ocfs2_dinode i_flags
Joseph Qi
joseph.qi at huawei.com
Wed Jan 21 17:07:48 PST 2015
Hi Srini,
On 2015/1/22 1:55, Srinivas Eeda wrote:
> Hi Joesph,
>
> thanks a lot for submitting the above patch. I am trying to understand what kind of flag corruption have you noticed and under what circumstances ? I agree with the patch that bitwise operations are better than adding, but I am not able to understand the corruption it could cause. Can you please share!
>
Suppose a the following case:
The dinode i_flag already has the OCFS2_ORPHANED_FL bit set, and calling
le32_add_cpu again. Then it will corrupt the i_flag.
--
Joseph
> Thanks,
> --Srini
>
>
>
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