linux-kernel - Re: [GIT PULL] percpu fix for v4.10-rc6

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Message-ID: <17591.1485935811@warthog.procyon.org.uk>
Date:   Wed, 01 Feb 2017 07:56:51 +0000
From:   David Howells <dhowells@...hat.com>
To:     Linus Torvalds <torvalds@...ux-foundation.org>
Cc:     dhowells@...hat.com, Tejun Heo <tj@...nel.org>,
        "linux-arch@...r.kernel.org" <linux-arch@...r.kernel.org>,
        Linux Kernel Mailing List <linux-kernel@...r.kernel.org>,
        dougmill@...ux.vnet.ibm.com
Subject: Re: [GIT PULL] percpu fix for v4.10-rc6

Linus Torvalds <torvalds@...ux-foundation.org> wrote:

> The fact is, atomic_long_inc_not_zero() shouldn't be returning
> anything with high bits..

Ummm...  Why's that the case?  If atomic_long_t can never exceed UINT_MAX,
then why does it exist at all?

David