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References: <20230423075335.92597-1-kal.conley@dectris.com>
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From:   Kal Cutter Conley <kal.conley@dectris.com>
Date:   Sun, 23 Apr 2023 19:54:38 +0200
Message-ID: <CAHApi-k1myxp5wqh4ojLKmVQyY=UG8hNT4Vk5c1V22Ua_i2kvA@mail.gmail.com>
Subject: Re: [PATCH] xsk: Use pool->dma_pages to check for DMA
To:     =?UTF-8?B?QmrDtnJuIFTDtnBlbA==?= <bjorn@kernel.org>,
        Magnus Karlsson <magnus.karlsson@intel.com>,
        Maciej Fijalkowski <maciej.fijalkowski@intel.com>,
        Jonathan Lemon <jonathan.lemon@gmail.com>,
        "David S. Miller" <davem@davemloft.net>,
        Eric Dumazet <edumazet@google.com>,
        Jakub Kicinski <kuba@kernel.org>,
        Paolo Abeni <pabeni@redhat.com>,
        Alexei Starovoitov <ast@kernel.org>,
        Daniel Borkmann <daniel@iogearbox.net>,
        Jesper Dangaard Brouer <hawk@kernel.org>,
        John Fastabend <john.fastabend@gmail.com>
Cc:     netdev@vger.kernel.org, bpf@vger.kernel.org,
        linux-kernel@vger.kernel.org
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> Compare pool->dma_pages instead of pool->dma_pages_cnt to check for an
> active DMA mapping. pool->dma_pages needs to be read anyway to access
> the map so this compiles to more efficient code.
>
> Signed-off-by: Kal Conley <kal.conley@dectris.com>
> Acked-by: Magnus Karlsson <magnus.karlsson@intel.com>

I forgot to specify the target tree. This patch should be applied to bpf-next.