* [Ocfs2-devel] ocfs2: should not use le32_add_cpu to set ocfs2_dinode i_flags
[not found] <54BFE80E.7090002@oracle.com>
@ 2015-01-22 1:07 ` Joseph Qi
2015-01-22 1:12 ` Srinivas Eeda
0 siblings, 1 reply; 2+ messages in thread
From: Joseph Qi @ 2015-01-22 1:07 UTC (permalink / raw)
To: ocfs2-devel
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
>
>
>
^ permalink raw reply [flat|nested] 2+ messages in thread
* [Ocfs2-devel] ocfs2: should not use le32_add_cpu to set ocfs2_dinode i_flags
2015-01-22 1:07 ` [Ocfs2-devel] ocfs2: should not use le32_add_cpu to set ocfs2_dinode i_flags Joseph Qi
@ 2015-01-22 1:12 ` Srinivas Eeda
0 siblings, 0 replies; 2+ messages in thread
From: Srinivas Eeda @ 2015-01-22 1:12 UTC (permalink / raw)
To: ocfs2-devel
Ok, understood. Thanks for explaining :)
On 01/21/2015 05:07 PM, Joseph Qi wrote:
> 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
>>
>>
>>
>
^ permalink raw reply [flat|nested] 2+ messages in thread
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2015-01-22 1:07 ` [Ocfs2-devel] ocfs2: should not use le32_add_cpu to set ocfs2_dinode i_flags Joseph Qi
2015-01-22 1:12 ` Srinivas Eeda
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