linux-kernel - Re: ipc,sem: sysv semaphore scalability

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Message-ID: <CA+i8gK+NTCK6OUzobvxPj+UaCO-iit-ww9VGNzmdqDfRC_+SuA@mail.gmail.com>
Date:	Sat, 30 Mar 2013 08:36:39 +0700
From:	Emmanuel Benisty <benisty.e@...il.com>
To:	Linus Torvalds <torvalds@...ux-foundation.org>
Cc:	Dave Jones <davej@...hat.com>,
	Andrew Morton <akpm@...ux-foundation.org>,
	Rik van Riel <riel@...riel.com>,
	Davidlohr Bueso <davidlohr.bueso@...com>,
	Linux Kernel Mailing List <linux-kernel@...r.kernel.org>,
	hhuang@...hat.com, "Low, Jason" <jason.low2@...com>,
	Michel Lespinasse <walken@...gle.com>,
	Larry Woodman <lwoodman@...hat.com>,
	"Vinod, Chegu" <chegu_vinod@...com>,
	Peter Hurley <peter@...leysoftware.com>
Subject: Re: ipc,sem: sysv semaphore scalability

Hi Linus,

On Sat, Mar 30, 2013 at 6:16 AM, Linus Torvalds
<torvalds@...ux-foundation.org> wrote:
> Emmanuel, can you try the attached patch? I think it applies cleanly
> on top of the scalability series too without any changes, but I didn't
> check if the patches perhaps changed some of the naming or something.

I had to slightly modify the patch since it wouldn't match the changes
introduced by 7-7-ipc-sem-fine-grained-locking-for-semtimedop.patch,
hope that was the right thing to do. So, what I tried was: original 7
patches + the one liner + your patch blindly modified by me on the top
of 3.9-rc4 and I'm still having twilight zone issues.
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