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List: linux-api
Subject: Re: [RFC PATCH 04/10] pipe: Use head and tail pointers for the ring, not cursor and length [ver #2]
From: Ilya Dryomov <idryomov () gmail ! com>
Date: 2019-10-31 15:57:53
Message-ID: CAOi1vP9GAmy5NXJisrDssspoRcc+UHum+cyBsJTMNTjz_jieoQ () mail ! gmail ! com
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On Thu, Oct 31, 2019 at 4:11 PM David Howells <dhowells@redhat.com> wrote:
>
> How about:
>
> * We use head and tail indices that aren't masked off, except at the
> * point of dereference, but rather they're allowed to wrap naturally.
> * This means there isn't a dead spot in the buffer, provided the ring
> * size is a power of two and <= 2^31.
To me "provided" reads like this thing works without a dead spot or
with a dead spot, depending on whether the condition is met. I would
say:
> * This means there isn't a dead spot in the buffer, but the ring
> * size has to be a power of two and <= 2^31.
Thanks,
Ilya
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