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Date: Thu, 1 Nov 2018 09:59:38 -0700 From: Eric Dumazet <eric.dumazet@...il.com> To: Peter Zijlstra <peterz@...radead.org>, Trond Myklebust <trondmy@...merspace.com> Cc: "mark.rutland@....com" <mark.rutland@....com>, "linux-kernel@...r.kernel.org" <linux-kernel@...r.kernel.org>, "ralf@...ux-mips.org" <ralf@...ux-mips.org>, "jlayton@...nel.org" <jlayton@...nel.org>, "linuxppc-dev@...ts.ozlabs.org" <linuxppc-dev@...ts.ozlabs.org>, "bfields@...ldses.org" <bfields@...ldses.org>, "linux-mips@...ux-mips.org" <linux-mips@...ux-mips.org>, "linux@...ck-us.net" <linux@...ck-us.net>, "linux-nfs@...r.kernel.org" <linux-nfs@...r.kernel.org>, "akpm@...ux-foundation.org" <akpm@...ux-foundation.org>, "will.deacon@....com" <will.deacon@....com>, "boqun.feng@...il.com" <boqun.feng@...il.com>, "paul.burton@...s.com" <paul.burton@...s.com>, "anna.schumaker@...app.com" <anna.schumaker@...app.com>, "jhogan@...nel.org" <jhogan@...nel.org>, "netdev@...r.kernel.org" <netdev@...r.kernel.org>, "davem@...emloft.net" <davem@...emloft.net>, "arnd@...db.de" <arnd@...db.de>, "paulus@...ba.org" <paulus@...ba.org>, "mpe@...erman.id.au" <mpe@...erman.id.au>, "benh@...nel.crashing.org" <benh@...nel.crashing.org>, Paul McKenney <paulmck@...ux.vnet.ibm.com>, aryabinin@...tuozzo.com, dvyukov@...gle.com Subject: Re: [RFC PATCH] lib: Introduce generic __cmpxchg_u64() and use it where needed On 11/01/2018 09:32 AM, Peter Zijlstra wrote: >> Anyhow, if the atomic maintainers are willing to stand up and state for >> the record that the atomic counters are guaranteed to wrap modulo 2^n >> just like unsigned integers, then I'm happy to take Paul's patch. > > I myself am certainly relying on it. Could we get uatomic_t support maybe ? This reminds me of this sooooo silly patch :/ https://git.kernel.org/pub/scm/linux/kernel/git/torvalds/linux.git/commit/?id=adb03115f4590baa280ddc440a8eff08a6be0cb7
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