Re: [PATCH 0/4] Plugging changes for blk/md/umem

[Jens Axboe <axboe@xxxxxxxxx>]

On 07/31/2012 09:25 AM, NeilBrown wrote:
> On Tue, 31 Jul 2012 09:08:55 +0200 Jens Axboe <axboe@xxxxxxxxx> wrote:
> 
>> On 07/26/2012 04:58 AM, NeilBrown wrote:
>>> Hi Jens,
>>>  the following series makes a number of changes to plugging, moving
>>>  common code from md and umem into block, and modifying it to allow
>>>  md to get more value out of it.
>>>  They've been sitting in -next for a while.
>>>  Are you OK with me forwarding them to Linus, or would you rather they
>>>  went though your tree?
>>
>> Thanks Neil, looks good. I will apply them to my tree and do some basic
>> testing, too, then push it off for this round (where I haven't pushed
>> out yet).
>>
> 
> Thanks Jens,
>  However I've just today discovered that the very first patch causes a real
>  regression in throughput for RAID5 and while I'm sure I can fix it with a
>  subsequent patch (once I figure out exactly what it happening) it might make
>  sense to hold them all back for 3.7.
> 
>  However if you would like to take them now and fix up later (it is only a
>  performance regression so it won't really affect bisection) I can work with
>  that.

If you're confident we can fix it in this cycle (sounds like it, if you
have a grasp on the situation), then I don't think that should stop us.

-- 
Jens Axboe

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