On Wed, 2018-10-10 at 10:52 +0900, Damien Le Moal wrote: > #define BLKREPORTZONE _IOWR(0x12, 130, struct blk_zone_report) > #define BLKRESETZONE _IOW(0x12, 131, struct blk_zone_range) > +#define BLKGETZONESZ _IOW(0x12, 132, unsigned int)
>From Documentation/ioctl/botching-up-ioctls.txt, a collection of lessons >learned the hard way about ioctls: * Only use fixed sized integers. To avoid conflicts with typedefs in userspace the kernel has special types like __u32, __s64. Use them. Please follow that advice. Thanks, Bart.
