linux-kernel - Re: [PATCH] genalloc: Make the avail variable an atomic64

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Message-ID: <0D12F536-0A4D-4C8D-B2BD-99523BC13672@raithlin.com>
Date:   Thu, 26 Oct 2017 11:25:47 +0000
From:   "Stephen  Bates" <sbates@...thlin.com>
To:     Mathieu Desnoyers <mathieu.desnoyers@...icios.com>
CC:     Daniel Mentz <danielmentz@...gle.com>,
        "logang@...tatee.com" <logang@...tatee.com>,
        Jonathan Corbet <corbet@....net>,
        Andrew Morton <akpm@...ux-foundation.org>,
        Will Deacon <will.deacon@....com>,
        linux-kernel <linux-kernel@...r.kernel.org>
Subject: Re: [PATCH] genalloc: Make the avail variable an atomic64_t

> We have atomic_long_t for that. Please use it instead. It will be
> 64-bit on 64-bit archs, and 32-bit on 32-bit archs, which seems to
> fit your purpose here.

Thanks you Mathieu! Yes atomic_long_t looks perfect for this and addresses Daniel’s concerns for 32 bit systems. I’ll prepare a v2 with that change.

Stephen