Re: (resend) [PATCH [linux-4.14.y]] dm cache: submit writethrough writes in parallel to origin and cache

[John Donnelly]

> On Jul 30, 2020, at 12:21 AM, Greg KH <gregkh@xxxxxxxxxxxxxxxxxxx> wrote:
> 
> On Wed, Jul 29, 2020 at 06:45:46PM -0500, John Donnelly wrote:
>> 
>> 
>> On 7/29/20 9:16 AM, Mike Snitzer wrote:
>>> On Wed, Jul 29 2020 at  7:55am -0400,
>>> Greg KH <gregkh@xxxxxxxxxxxxxxxxxxx> wrote:
>>> 
>>>> On Wed, Jul 29, 2020 at 01:51:19PM +0200, Greg KH wrote:
>>>>> On Mon, Jul 27, 2020 at 11:00:14AM -0400, Mike Snitzer wrote:
>>>>>> This mail needs to be saent to stable@xxxxxxxxxxxxxxx (now cc'd).
>>>>>> 
>>>>>> Greg et al: please backport 2df3bae9a6543e90042291707b8db0cbfbae9ee9
>>>>> 
>>>>> Now backported, thanks.
>>>> 
>>>> Nope, it broke the build, I need something that actually works :)
>>>> 
>>> 
>>> OK, I'll defer to John Donnelly to get back with you (and rest of
>>> stable@).  He is more invested due to SUSE also having this issue.  I
>>> can put focus to it if John cannot sort this out.
>>> 
>>> Mike
>>> 
>> 
>> 
>> Hi.
>> 
>> 
>> Thank you for reaching out.
>> 
>> What specifically is broken? . If it that applying
>> 2df3bae9a6543e90042291707b8db0cbfbae9ee9 to 4.14.y is failing?
> 
> yes, try it yourself and see!

 Hi . 

 Yes .  

  2df3bae9a6543e90042291707b8db0cbfbae9ee9

 Needs refactored to work in 4.14.y (now .190) as there is a conflict in arguments as noted in my original submittal ;-) . 
 I also noticed there are warning to functions " defined but not used [-Wunused-function] â  too.

 Do you want another PATCH v2 message  in a new email thread,  or can I  append it to this this thread ?

Please advice.

Thanks.
JD.