On Tue, Feb 6, 2024 at 3:11 AM Stephen Rothwell <sfr@xxxxxxxxxxxxxxxx> wrote: > 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. All of these BIT() have to be changed to BIT_ULL(). And let's hope all variables used for storing these flags have been changed from unsigned long to u64... Gr{oetje,eeting}s, Geert -- Geert Uytterhoeven -- There's lots of Linux beyond ia32 -- geert@xxxxxxxxxxxxxx In personal conversations with technical people, I call myself a hacker. But when I'm talking to journalists I just say "programmer" or something like that. -- Linus Torvalds