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Subject: Re: [PATCH v2 net] skbuff: back tiny skbs with kmalloc() in
 __netdev_alloc_skb() too
From:   patchwork-bot+netdevbpf@kernel.org
Message-Id: <161085300789.5035.6945893821776961084.git-patchwork-notify@kernel.org>
Date:   Sun, 17 Jan 2021 03:10:07 +0000
References: <20210115150354.85967-1-alobakin@pm.me>
In-Reply-To: <20210115150354.85967-1-alobakin@pm.me>
To:     Alexander Lobakin <alobakin@pm.me>
Cc:     davem@davemloft.net, kuba@kernel.org, willemb@google.com,
        linmiaohe@huawei.com, edumazet@google.com, fw@strlen.de,
        linyunsheng@huawei.com, steffen.klassert@secunet.com,
        gnault@redhat.com, dseok.yi@samsung.com, kyk.segfault@gmail.com,
        viro@zeniv.linux.org.uk, elver@google.com, netdev@vger.kernel.org,
        linux-kernel@vger.kernel.org
Precedence: bulk

Hello:

This patch was applied to netdev/net.git (refs/heads/master):

On Fri, 15 Jan 2021 15:04:40 +0000 you wrote:
> Commit 3226b158e67c ("net: avoid 32 x truesize under-estimation for
> tiny skbs") ensured that skbs with data size lower than 1025 bytes
> will be kmalloc'ed to avoid excessive page cache fragmentation and
> memory consumption.
> However, the fix adressed only __napi_alloc_skb() (primarily for
> virtio_net and napi_get_frags()), but the issue can still be achieved
> through __netdev_alloc_skb(), which is still used by several drivers.
> Drivers often allocate a tiny skb for headers and place the rest of
> the frame to frags (so-called copybreak).
> Mirror the condition to __netdev_alloc_skb() to handle this case too.
> 
> [...]

Here is the summary with links:
  - [v2,net] skbuff: back tiny skbs with kmalloc() in __netdev_alloc_skb() too
    https://git.kernel.org/netdev/net/c/66c556025d68

You are awesome, thank you!
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