Re: [PATCHv3] bcache: only permit to recovery read error when cache device is clean

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On 2017/10/17 上午1:39, Michael Lyle wrote:
> Hey Coly--
> 
> On Thu, Sep 21, 2017 at 12:54 PM, Coly Li <colyli@xxxxxxx> wrote:
>> When bcache does read I/Os, for example in writeback or writethrough mode,
>> if a read request on cache device is failed, bcache will try to recovery
>> the request by reading from cached device. If the data on cached device is
>> not synced with cache device, then requester will get a stale data.
> [...]
>> +       if (s->recoverable &&
>> +           (dc && !atomic_read(&dc->has_dirty)) {
> 
> Looks like this is missing a parens.

Hi Mike,

Oops, I am blind ... Thanks for figure out this.

V4 patch is out, and I think you may change Acked-by to Reviewed-by,
because you reviewed the code and pointed out problem :-)

Thanks.

-- 
Coly Li



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