linux-kernel - Re: [GIT PULL] slab fixes for 3.2-rc4

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Message-ID: <CA+55aFzY_6QYVyjAmP+w8D0Xy1Pq++XEUaBJRcCN9SbDE-pOhw@mail.gmail.com>
Date:	Thu, 22 Dec 2011 10:31:31 -0800
From:	Linus Torvalds <torvalds@...ux-foundation.org>
To:	Christoph Lameter <cl@...ux.com>
Cc:	Tejun Heo <tj@...nel.org>, Pekka Enberg <penberg@...nel.org>,
	Ingo Molnar <mingo@...e.hu>,
	Andrew Morton <akpm@...ux-foundation.org>,
	linux-kernel@...r.kernel.org, linux-arch@...r.kernel.org,
	Thomas Gleixner <tglx@...utronix.de>
Subject: Re: [GIT PULL] slab fixes for 3.2-rc4

On Thu, Dec 22, 2011 at 9:58 AM, Christoph Lameter <cl@...ux.com> wrote:
>
> Subject: [percpu] Remove irqsafe_cpu_xxx variants

This looks good, but just remove the whole silly "xyz_op_return()" set
too. Don't even try to fix it up.

As far as I can tell, there are just a couple of users of that
horrible interface, it really isn't worth it. Just remove it and
opencode it. They are actually broken on x86 ('xadd' only exists if
CONFIG_X86_XADD is on - i386 didn't have it), and while most people
probably don't care (i386? What's that?), I note that the x86
add_return stuff doesn't take that into account.

If somebody cares about the end result of the add that much, they can
damn well just do it themselves.

                            Linus
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