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Fri, 13 Mar 2026 07:47:18 -0700 (PDT) Received: from twshared17475.04.snb3.facebook.com (2620:10d:c085:108::4) by mail.thefacebook.com (2620:10d:c08b:78::c78f) with Microsoft SMTP Server (version=TLS1_2, cipher=TLS_ECDHE_RSA_WITH_AES_128_GCM_SHA256) id 15.2.2562.35; Fri, 13 Mar 2026 14:47:16 +0000 Received: by devbig197.nha3.facebook.com (Postfix, from userid 544533) id 0BB0DB3BB9E5; Fri, 13 Mar 2026 07:47:02 -0700 (PDT) From: Keith Busch To: , , CC: , , , Ming Lei , Keith Busch Subject: [PATCHv8 2/2] ublk: report BLK_SPLIT_INTERVAL_CAPABLE Date: Fri, 13 Mar 2026 07:47:01 -0700 Message-ID: <20260313144701.1221652-3-kbusch@meta.com> X-Mailer: git-send-email 2.52.0 In-Reply-To: <20260313144701.1221652-1-kbusch@meta.com> References: <20260313144701.1221652-1-kbusch@meta.com> Precedence: bulk X-Mailing-List: linux-block@vger.kernel.org List-Id: List-Subscribe: List-Unsubscribe: MIME-Version: 1.0 Content-Transfer-Encoding: quoted-printable X-FB-Internal: Safe Content-Type: text/plain X-Proofpoint-ORIG-GUID: Y0KbE0dlhAlacLvVBwIaqt-d1bkGckb2 X-Proofpoint-Spam-Details-Enc: AW1haW4tMjYwMzEzMDExNyBTYWx0ZWRfX1dAk2PQM7x8A DE8Auiq1zRfD6RaZRCkHggHMFxZ/luD+p5EGGKlCa51eTtgt1Ki8XXPslZ/V7tte+xF3n+7kwOD Cvts/FD3tHoiQ3nItK331nitLfXWr9onTOI0RjW6EY6K9Nc92UltjE+9K9mf7Hu+esREqeDx8GJ V2uZgYyAgOLZ0jFmnI2TZqh9cadfL3b6ZA069il0/JF88BHuKurL1h1pWfDSXTcTI4aIS0RF65B nNDE4v7u9RG2JEzNXqtZwV21MSfwCcUWvjbN6WXVKZuc7B3igsGpeZsULTPUJBDo4j8xTxvKUJa DdT971ZbYxdEFRDwbCbIaFp4cTiIJU/FmYQVSUptdYQ0T9KNh3GaWofkh9HPiehKA2Eo1cU9OY0 20sIlgIDfRa6EBJDOuVHek0Qc7G06legCz/CEDijOiv11BsROr5nIe8RRotYDviaueLW8uhSm8u 2CCmdCKecIBR2NjP99A== X-Proofpoint-GUID: Y0KbE0dlhAlacLvVBwIaqt-d1bkGckb2 X-Authority-Analysis: v=2.4 cv=XvL3+FF9 c=1 sm=1 tr=0 ts=69b42376 cx=c_pps a=CB4LiSf2rd0gKozIdrpkBw==:117 a=CB4LiSf2rd0gKozIdrpkBw==:17 a=Yq5XynenixoA:10 a=VkNPw1HP01LnGYTKEx00:22 a=7x6HtfJdh03M6CCDgxCd:22 a=8elwO82fXORLTBIkMd32:22 a=WTJdmG3rAAAA:8 a=20KFwNOVAAAA:8 a=VwQbUJbxAAAA:8 a=yPCof4ZbAAAA:8 a=O2R9A2DNrl80SOu8WGEA:9 a=q3NGepEMMmKWaCv8Sx90:22 X-Proofpoint-Virus-Version: vendor=baseguard engine=ICAP:2.0.293,Aquarius:18.0.1143,Hydra:6.1.51,FMLib:17.12.100.49 definitions=2026-03-13_02,2026-03-13_01,2025-10-01_01 From: Caleb Sander Mateos The ublk driver doesn't access request integrity buffers directly, it only copies them to/from the ublk server in ublk_copy_user_integrity(). ublk_copy_user_integrity() uses bio_for_each_integrity_vec() to walk all the integrity segments. ublk devices are therefore capable of handling requests with integrity intervals split across segments. Set BLK_SPLIT_INTERVAL_CAPABLE in the struct blk_integrity flags for ublk devices to opt out of the integrity-interval dma_alignment limit. Reviewed-by: Ming Lei Reviewed-by: Keith Busch Reviewed-by: Martin K. Petersen Signed-off-by: Caleb Sander Mateos Signed-off-by: Keith Busch --- drivers/block/ublk_drv.c | 2 +- 1 file changed, 1 insertion(+), 1 deletion(-) diff --git a/drivers/block/ublk_drv.c b/drivers/block/ublk_drv.c index 004f367243b69..34ed4f6a02ef2 100644 --- a/drivers/block/ublk_drv.c +++ b/drivers/block/ublk_drv.c @@ -808,7 +808,7 @@ static void ublk_dev_param_basic_apply(struct ublk_de= vice *ub) =20 static int ublk_integrity_flags(u32 flags) { - int ret_flags =3D 0; + int ret_flags =3D BLK_SPLIT_INTERVAL_CAPABLE; =20 if (flags & LBMD_PI_CAP_INTEGRITY) { flags &=3D ~LBMD_PI_CAP_INTEGRITY; --=20 2.52.0