netdev - Re: [net-next 01/15] net/mlx5: DR, Add buddy allocator utilities

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Message-Id: <20200928.144149.790487567012040407.davem@davemloft.net>
Date:   Mon, 28 Sep 2020 14:41:49 -0700 (PDT)
From:   David Miller <davem@...emloft.net>
To:     kliteyn@...dia.com
Cc:     saeed@...nel.org, kuba@...nel.org, netdev@...r.kernel.org,
        erezsh@...dia.com, mbloch@...dia.com, saeedm@...dia.com
Subject: Re: [net-next 01/15] net/mlx5: DR, Add buddy allocator utilities

From: Yevgeny Kliteynik <kliteyn@...dia.com>
Date: Mon, 28 Sep 2020 19:58:59 +0000

> By replacing the bits-per-long array with a single counter we loose
> this ability to jump faster to the free spot.

I don't understand why this is true, because upon the free we will
update the hint and that's where the next bit search will start.

Have you even tried my suggestion?