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([2620:10d:c092:600::1:b123]) by smtp.gmail.com with ESMTPSA id d9443c01a7336-2d04b15d26esm25625075ad.76.2026.08.02.05.26.33 (version=TLS1_3 cipher=TLS_AES_128_GCM_SHA256 bits=128/128); Sun, 02 Aug 2026 05:26:41 -0700 (PDT) Message-ID: <96c485cb-d169-420e-96f2-108ec6ba7081@gmail.com> Date: Sun, 2 Aug 2026 13:26:34 +0100 Precedence: bulk X-Mailing-List: netdev@vger.kernel.org List-Id: List-Subscribe: List-Unsubscribe: MIME-Version: 1.0 User-Agent: Mozilla Thunderbird Subject: Re: [PATCH net v1 2/3] net: devmem: return EMSGSIZE on type mismatch To: Mina Almasry Cc: Stanislav Fomichev , Bobby Eshleman , "David S. Miller" , Eric Dumazet , Jakub Kicinski , Paolo Abeni , Simon Horman , Will Deacon , Antonio Quartulli , Ralf Lici , Kaiyuan Zhang , "open list:NETWORKING [GENERAL]" , open list References: <20260801125308.1342897-1-almasrymina@google.com> <20260801125308.1342897-2-almasrymina@google.com> Content-Language: en-US From: Pavel Begunkov In-Reply-To: <20260801125308.1342897-2-almasrymina@google.com> Content-Type: text/plain; charset=UTF-8; format=flowed Content-Transfer-Encoding: 7bit On 8/1/26 13:52, Mina Almasry wrote: > When a devmem payload mixes with a standard page payload, return > -EMSGSIZE instead of -EFAULT. This enables tcp_sendmsg to seamlessly > fall back to creating a new segment instead of failing the socket send. > > Fixes: bd61848900bff ("net: devmem: Implement TX path") > Cc: Pavel Begunkov > Cc: Stanislav Fomichev > Cc: Bobby Eshleman > Signed-off-by: Mina Almasry Reviewed-by: Pavel Begunkov -- Pavel Begunkov