Re: an optimization for dm-bufio and dm-integrity

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On 07/19/2017 05:39 PM, Mike Snitzer wrote:
> On Wed, Jul 19 2017 at 11:30P -0400,
> Mikulas Patocka <mpatocka@xxxxxxxxxx> wrote:
> 
>> Hi Mike
>>
>> Some times ago, I sent this patch as dm-bufio optimization (it doesn't 
>> have to write full buffers, it only writes a part of the buffer that 
>> changed). You delayed the patch until the next kernel.
>>
>> Will you submit the patch to the current kernel?
> 
> Sorry about that.  It obviously fell off my radar.
> 
> I'll review it and see if I can make the justification for it going into
> 4.13-rc2.  But unfortunately the 4.13 merge window closed this past
> Sunday when Linus released v4.13-rc1
> 
> I'll let you know though, thanks.

Just FYI: I am just running some tests with the stack space fix and
this patch and the performance improvement for 4k sectors is really big
(compared to 4.12). It would be nice if both patches hits 4.13...

Milan


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