Re: [BUG] md hang at schedule in md_write_start

On 09/11/2013 01:54 AM, NeilBrown wrote:

On Tue, 10 Sep 2013 13:09:05 +0200 Jack Wang [off-list ref]
wrote:

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snip

Hi Neil,

I notice you send out pull request for md update, which include fix for
this bug.

I think we'd better include the fix to stable tree at least from 3.4
above, what do you think?

I don't think it is a situation that is at all like to occur in normal usage,
so it doesn't seem justified for -stable.

Do you disagree?  Did you ever experience the deadlock in normal usage or
only in artificial situations?

Yes, we do see this BUG in our production environment, so I think it's
good to include it in stable tree.

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md: avoid deadlock when dirty buffers during md_stop.

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http://git.neil.brown.name/?p=md.git;a=commit;h=260fa034ef7a4ff8b73068b48ac497edd5217491

BTW: It will be great if you could add my Reported-by and Tested-by:)

Sorry I forgot those.  To late to add them now.

Fine, Thanks all the time:)

Regards,
Jack

NeilBrown

quoted

Best regards,
Jack