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charset=UTF-8 Content-Transfer-Encoding: 8bit X-Authority-Analysis: v=2.4 cv=WKNyn3sR c=1 sm=1 tr=0 ts=695ecff4 cx=c_pps a=qKBjSQ1v91RyAK45QCPf5w==:117 a=Eb9f15NH/cHKzfGOmZSO4Q==:17 a=IkcTkHD0fZMA:10 a=vUbySO9Y5rIA:10 a=s4-Qcg_JpJYA:10 a=VkNPw1HP01LnGYTKEx00:22 a=iQpfymHqp41Ck2fXHbgA:9 a=3ZKOabzyN94A:10 a=QEXdDO2ut3YA:10 a=NFOGd7dJGGMPyQGDc5-O:22 X-Proofpoint-GUID: -je_RkHgJGlDDvdL8uaUn518fUL0ZcSp X-Proofpoint-Spam-Details-Enc: AW1haW4tMjYwMTA3MDE3MCBTYWx0ZWRfX+l5ySiC/K/Wh 9k/m4TdZ4wP3mx5Zi1mBvDTmHLpFvJ15IqKfNnnsPkIhhrKtQUGISYYt+xhLqJoe0ADJV4q2K7Y 69NR/qchPtwqDsFM1wYOJhV+z4emAFm7miwGE4GJVr3HHKyC087q0kDN3eJYNwozTk7jCUOfk/t +ADD/YzattPN9IxKX62aKgEO9E/BDZuZ+cwvgZ6bSJPtvtru3ZlitG52ibKJ0sDhvf4noXBvppw BRHxQZKYp0MnPUHtJw4HLGdoWMzTE5o/B48UwYKdxFODNzFzwNlncwC3Fjb519KecXHHCM+mZQq 4QC/Bz4Cr39bwjKxq17yLLYIsJaoELDCyauYwcDAM1XUBP+2+vNPCmqCot/epBrombj2OKODdRT TER4ZkX3mF+RQmqHNuNEbEJzNEfnYBoWeyzqyN01LN7+B868Z0yt502OGyK7ja4HFmvfsG2jLR+ 18Y4LjiO7vl/ZM1UmLg== X-Proofpoint-ORIG-GUID: -je_RkHgJGlDDvdL8uaUn518fUL0ZcSp X-Proofpoint-Virus-Version: vendor=baseguard engine=ICAP:2.0.293,Aquarius:18.0.1121,Hydra:6.1.9,FMLib:17.12.100.49 definitions=2026-01-07_03,2026-01-07_03,2025-10-01_01 X-Proofpoint-Spam-Details: rule=outbound_notspam policy=outbound score=0 clxscore=1015 spamscore=0 malwarescore=0 bulkscore=0 priorityscore=1501 lowpriorityscore=0 adultscore=0 impostorscore=0 phishscore=0 suspectscore=0 classifier=typeunknown authscore=0 authtc= authcc= route=outbound adjust=0 reason=mlx scancount=1 engine=8.22.0-2512120000 definitions=main-2601070170 On 07/01/2026 20:38, Joe Perches wrote: > On Wed, 2026-01-07 at 20:35 +0100, Greg Kroah-Hartman wrote: >> On Wed, Jan 07, 2026 at 10:40:11AM -0800, Joe Perches wrote: >>> On Wed, 2026-01-07 at 18:12 +0100, Krzysztof Kozlowski wrote: >>>> Sources already have SPDX-FileCopyrightText (~40 instances) and more >>>> appear on the mailing list, so document that it is allowed. On the >>>> other hand SPDX defines several other tags like SPDX-FileType, so add >>>> checkpatch rule to narrow desired tags only to two of them - license and >>>> copyright. That way no new tags would sneak in to the kernel unnoticed. >>> >>> I find no value in this tag. I think it should be discouraged. >>> >>> How is it different or more useful than a typical Copyright or © symbol ? >> >> It's easier to parse automatically and put into other places (like a >> software bill of materials). >> >> I don't like it all that much either, as really, it doesn't mean much >> (go talk to a lawyer for details), but it's already in our tree so we >> might as well document it... > > Document it doesn't mean encourage it. Just like I explained in the changelog --- part, we should either accept it or mark it as incorrect in the checkpatch. I am fine with both (I don't have actual preference), but what I do not want is to have it in limbo/open stage, where everyone has to guess if it is desired/allowed. Lack of documented policy enforced by checkpatch means every maintainer upon seeing it will do the same as me - git grep and try to understand whether this is approved or not. Pretty waste of everyone's time. Best regards, Krzysztof