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From: Manfred Spraul <manfred@colorfullife.com>
To: "H. Peter Anvin" <hpa@zytor.com>, Peter Zijlstra <peterz@infradead.org>,
        Andrew Morton <akpm@linux-foundation.org>,
        Davidlohr Bueso <dave@stgolabs.net>
Cc: LKML <linux-kernel@vger.kernel.org>, Thomas Gleixner <tglx@linutronix.de>,
        Ingo Molnar <mingo@elte.hu>, 1vier1@web.de,
        felixh@informatik.uni-bremen.de,
        Manfred Spraul <manfred@colorfullife.com>
Subject: [PATCH 0/2] ipc/sem.c: sem_lock fixes
Date: Wed, 13 Jul 2016 07:06:50 +0200
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Hi Andrew, Hi Peter,

next version of the sem_lock() fixes:
The patches are again vs. tip.

Patch 1 is ready for merging, Patch 2 is for review.

- Patch 1 is the patch as in -next since January
  It fixes the race that was found by Felix.
- Patch 2 removes the memory barriers that are part of the qspinlock
  code.
- (The hysteresis patch would be patch 3. The risk of regressions
  can't be ruled out, thus it must wait for benchmarks from real
  workload tests)

Patch 1+2 were one patch, I've split patches so that review and
backporting are simpler.

--
        Manfred