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(Postfix) with ESMTP id 1E8222004D; Mon, 8 Apr 2024 12:40:53 +0000 (GMT) Received: from smtpav07.fra02v.mail.ibm.com (unknown [127.0.0.1]) by IMSVA (Postfix) with ESMTP id 2E2AE2004E; Mon, 8 Apr 2024 12:40:52 +0000 (GMT) Received: from [9.171.30.232] (unknown [9.171.30.232]) by smtpav07.fra02v.mail.ibm.com (Postfix) with ESMTP; Mon, 8 Apr 2024 12:40:52 +0000 (GMT) Message-ID: <87cfb39893b0e38164e8f3014089c2bb5a79d63f.camel@linux.ibm.com> Subject: Re: [PATCH net v2] s390/ism: fix receive message buffer allocation From: Niklas Schnelle To: patchwork-bot+netdevbpf@kernel.org, Gerd Bayer Cc: wintera@linux.ibm.com, twinkler@linux.ibm.com, hca@linux.ibm.com, pabeni@redhat.com, hch@lst.de, pasic@linux.ibm.com, wenjia@linux.ibm.com, guwen@linux.alibaba.com, linux-s390@vger.kernel.org, netdev@vger.kernel.org, gor@linux.ibm.com, agordeev@linux.ibm.com, borntraeger@linux.ibm.com, svens@linux.ibm.com Date: Mon, 08 Apr 2024 14:40:51 +0200 In-Reply-To: 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 Content-Type: text/plain; charset="UTF-8" User-Agent: Evolution 3.50.4 (3.50.4-1.fc39) X-TM-AS-GCONF: 00 X-Proofpoint-ORIG-GUID: f_IyH916DyqBWVb8IMicvxymDqcS2sxP X-Proofpoint-GUID: iLp_bOGe3pPRoj4c4m8NCe83jZNgvA_p Content-Transfer-Encoding: quoted-printable X-Proofpoint-UnRewURL: 0 URL was un-rewritten Precedence: bulk X-Mailing-List: linux-s390@vger.kernel.org List-Id: List-Subscribe: List-Unsubscribe: MIME-Version: 1.0 X-Proofpoint-Virus-Version: vendor=baseguard engine=ICAP:2.0.272,Aquarius:18.0.1011,Hydra:6.0.619,FMLib:17.11.176.26 definitions=2024-04-08_11,2024-04-05_02,2023-05-22_02 X-Proofpoint-Spam-Details: rule=outbound_notspam policy=outbound score=0 mlxscore=0 mlxlogscore=826 malwarescore=0 priorityscore=1501 spamscore=0 clxscore=1011 phishscore=0 bulkscore=0 suspectscore=0 adultscore=0 lowpriorityscore=0 impostorscore=0 classifier=spam adjust=0 reason=mlx scancount=1 engine=8.12.0-2404010000 definitions=main-2404080097 On Mon, 2024-04-08 at 11:00 +0000, patchwork-bot+netdevbpf@kernel.org wrote: > Hello: >=20 > This patch was applied to netdev/net.git (main) > by David S. Miller : >=20 > On Fri, 5 Apr 2024 13:16:06 +0200 you wrote: > > Since [1], dma_alloc_coherent() does not accept requests for GFP_COMP > > anymore, even on archs that may be able to fulfill this. Functionality = that > > relied on the receive buffer being a compound page broke at that point: > > The SMC-D protocol, that utilizes the ism device driver, passes receive > > buffers to the splice processor in a struct splice_pipe_desc with a > > single entry list of struct pages. As the buffer is no longer a compound > > page, the splice processor now rejects requests to handle more than a > > page worth of data. > >=20 > > [...] >=20 > Here is the summary with links: > - [net,v2] s390/ism: fix receive message buffer allocation > https://git.kernel.org/netdev/net/c/58effa347653 >=20 > You are awesome, thank you! This version of the patch has an outstanding issue around handling allocation failure see the comments on v1 here[0]. Please drop. Gerd will send a v3 with that issue fixed. Thanks, Niklas [0] https://lore.kernel.org/all/20240405143641.GA5865@lst.de/