Hi all, After merging the block tree, today's linux-next build (arm multi_v7_defconfig) produced these warnings: In file included from /home/sfr/next/next/include/linux/bits.h:6, from /home/sfr/next/next/include/linux/bitops.h:6, from /home/sfr/next/next/include/linux/kernel.h:23, from /home/sfr/next/next/io_uring/nop.c:2: /home/sfr/next/next/include/vdso/bits.h:7:40: warning: left shift count >= width of type [-Wshift-count-overflow] 7 | #define BIT(nr) (UL(1) << (nr)) | ^~ /home/sfr/next/next/include/linux/io_uring_types.h:538:35: note: in expansion of macro 'BIT' 538 | REQ_F_CAN_POLL = BIT(REQ_F_CAN_POLL_BIT), | ^~~ (and mny more similar) Introduced by commit d964e8440442 ("io_uring: add io_file_can_poll() helper") REQ_F_CAN_POLL_BIT is 32. -- Cheers, Stephen Rothwell