Re: [PATCH v3] lock/semaphore: Avoid an unnecessary deadlock within up()

[Byungchul Park]

On Wed, Feb 17, 2016 at 11:40:49AM +0100, Peter Zijlstra wrote:
> Mucking with the semaphore implementation just because printk() is
> terminally broken shite really doesn't fly.

Jan is currently working on the terminally broken shite, and I expect it
makes printk() robuster. I just tried this patch because I though the
semaphore also need to be fixed and furthermore it can fix a deadlock by
removing the waiting within trylock. I think it's reasonable. Wrong?