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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 <ming.lei@redhat.com> Reviewed-by: Keith Busch <kbusch@kernel.org> Reviewed-by: Martin K. Petersen <martin.petersen@oracle.com> Signed-off-by: Caleb Sander Mateos <csander@purestorage.com> Signed-off-by: Keith Busch <kbusch@kernel.org> Link: https://patch.msgid.link/20260313144701.1221652-3-kbusch@meta.com Signed-off-by: Jens Axboe <axboe@kernel.dk>