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Currently, each file of blktests has one of the licenses: GPL-2.0, GPL-2.0+ or GPL-3.0+. Majority of the blktests code has GPL-3.0+, so the effective main license is GPL-3.0+ (e.g., check, common/rc). However, GPL-2.0 and GPL-3.0 are not compatible with each other [2]. Because the majority of blktests is GPL-3.0+, blktests cannot contain GPL-2.0 files. All files shall be GPL-2.0+ or GPL-3.0+. [1] https://lore.kernel.org/linux-block/20260626045650.GA8752@lst.de/ [2] https://www.gnu.org/licenses/gpl-faq.html#v2v3Compatibility As of July 2026, seven files below have GPL-2.0. It is desired to change their license to GPL-2.0+ (or GPL-3.0+). The list below shows Authors and Contributors of each file. "Author" means the original file creator who set the license GPL-2.0. "Contributor" means those who made changes to the files later on. 1) block/029 Author: Bart Van Assche Contributors: Yi Zhang Christoph Hellwig Li Zhijian 2) block/030 Author: Bart Van Assche Contributors: Christoph Hellwig Li Zhijian Akinobu Mita 3) block/031 Author: Bart Van Assche Contributors: Yi Zhang Christoph Hellwig Shin'ichiro Kawasaki 4) block/040 Author: Ming Lei 5) block/042 Author: Keith Busch Contributors: Shin'ichiro Kawasaki John Pittman 6) block/043 Author: Keith Busch Contributors: Shin'ichiro Kawasaki 7) src/dio-offsets.c Author: Keith Busch Contributors: Shin'ichiro Kawasaki Bart Van Assche To the authors and the contributors, I would like to call for your responses. Please let us know if you agree to modify the license of the files from GPL-2.0 to GPL-2.0+ (or GPL-3.0+). I will wait for a few weeks to gather responses. Once agreement gets estabilished, I will ask the authors to submit patches to make the license change. Any other general comments on this topic will be appreciated also. And as one of the contributors, here I express my agreement to change the license of the files :)