Re: [tip:locking/core] rwsem: Add comments to explain the meaning of the rwsem's count field

From: Peter Zijlstra
Date: Mon May 05 2014 - 12:31:39 EST


On Mon, May 05, 2014 at 09:03:28AM -0700, Tim Chen wrote:
> On Mon, 2014-05-05 at 01:46 -0700, tip-bot for Tim Chen wrote:
> > Commit-ID: 3cf2f34e1a3d4d5ff209d087925cf950e52f4805
> > Gitweb: http://git.kernel.org/tip/3cf2f34e1a3d4d5ff209d087925cf950e52f4805
> > Author: Tim Chen <tim.c.chen@xxxxxxxxxxxxxxx>
> > AuthorDate: Fri, 2 May 2014 12:53:57 -0700
> > Committer: Ingo Molnar <mingo@xxxxxxxxxx>
> > CommitDate: Sun, 4 May 2014 20:34:26 +0200
> >
>
> Ingo,
>
> Can you pick up this version of the patch instead. I've updated the
> comments to reflect all cases for which the rwsem's count is less than
> WAITING_BIAS, as Peter has pointed out.

Wouldn't a state diagram be clearer than this gobs of text?
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