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SubjectRe: [PATCH 0/3] blk-mq: bitmap tag: Fix few races
On 2014-06-17 10:39, Alexander Gordeev wrote:
> On Tue, Jun 17, 2014 at 07:21:19AM -0600, Jens Axboe wrote:
>> On 2014-06-17 04:35, Christoph Hellwig wrote:
>>> Jens, did you plan to pick these up? There's a few bits of low hanging
>>> fruit for cleanups / micro-optimizations in this area, but I don't want
>>> to create conflicts with Alexanders work.
>>
>> I'm evaluating just getting rid of the cyclic waits, which is why
>> I've held off. But the patches don't apply to the current tree
>> anyway, so they would need a rediffing no matter what.
>
> Hi Jens,
>
> Patches 1/3 and 2/3 apply to Linus's tree and could go in without patch 3/3.
> I'll post v2 of 3/3.

As mentioned in another thread, I'm sort-of hoping we can just get rid
of the nasty multiple waitqueues. Will run some testing when I'm back.
If we still see a nice gain of having the cycling waitqueues, then I'll
test and apply your patches to close up the holes.


--
Jens Axboe



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