Re: [GIT PULL] locking tree changes for v3.16

From: Davidlohr Bueso
Date: Tue Jun 03 2014 - 17:51:03 EST


On Tue, 2014-06-03 at 13:48 +0200, Ingo Molnar wrote:
> Linus,
>
> Please pull the latest locking-core-for-linus git tree from:
>
> git://git.kernel.org/pub/scm/linux/kernel/git/tip/tip.git locking-core-for-linus
>
> # HEAD: 3cf2f34e1a3d4d5ff209d087925cf950e52f4805 rwsem: Add comments to explain the meaning of the rwsem's count field
>
> The main changes in this cycle were:
>
> - reduced/streamlined smp_mb__*() interface that allows more usecases
> and makes the existing ones less buggy, especially in rarer
> architectures
>
> - add rwsem implementation comments
>
> - bump up lockdep limits

So I guess the rwsem optimistic spinning stuff will be routed through
akpm then (which is already in -next for a while, through -mm).

Also curious about why Peter's rewrite of the qrwlock_t was removed from
-tip... I noticed it was there for a few days then disappeared. What am
I missing?

Thanks,
Davidlohr

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