On 12/14/18 4:04 PM, kbuild test robot wrote: > tree: git://git.cmpxchg.org/linux-mmotm.git master > head: 6d5b029d523e959579667282e713106a29c193d2 > commit: 80509a64e354a3de67cfe4dee1cf51c8a2512e44 [187/302] mm/page_io.c: fix polled swap page in > config: x86_64-rhel-7.2-clear (attached as .config) > compiler: gcc-7 (Debian 7.3.0-1) 7.3.0 > reproduce: > git checkout 80509a64e354a3de67cfe4dee1cf51c8a2512e44 > # save the attached .config to linux build tree > make ARCH=x86_64 > > Note: the mmotm/master HEAD 6d5b029d523e959579667282e713106a29c193d2 builds fine. > It only hurts bisectibility. > > All errors (new ones prefixed by >>): > > mm/page_io.c: In function 'swap_readpage': >>> mm/page_io.c:405:18: error: 'REQ_HIPRI' undeclared (first use in this function); did you mean 'RWF_HIPRI'? > bio->bi_opf |= REQ_HIPRI; > ^~~~~~~~~ > RWF_HIPRI > mm/page_io.c:405:18: note: each undeclared identifier is reported only once for each function it appears in The patch just needs to be ordered after the block tree in -mm, then there are no concerns. -- Jens Axboe