On 08/28/2017 03:07 AM, Florian Weimer wrote: > On 08/24/2017 12:41 AM, Michael Kerrisk (man-pages) wrote: >> +.TP >> +.BR F_GET_RW_HINT " (\fIuint64_t\fP; since Linux 4.13)" >> +Returns the value of the read/write hint associated with the underlying inode >> +for the file descriptor. >> +.TP >> +.BR F_SET_RW_HINT " (\fIuint64_t\fP; since Linux 4.13)" >> +Sets the read/write hint value associated with the underlying inode for the >> +file descriptor. > > Surely the arguments are of pointer type for reads *and* writes? > > There is no convenient way 32-bit userspace can pass a 64-bit integer > through are variadic dispatcher interface such as ioctl/fcntl/futex. Yes, they are pointers to a u64 for both the get/set side. The return type is 0/Exxxx. -- Jens Axboe -- To unsubscribe from this list: send the line "unsubscribe linux-man" in the body of a message to majordomo@xxxxxxxxxxxxxxx More majordomo info at http://vger.kernel.org/majordomo-info.html
