On October 26, 2014 6:22:52 AM CET, Li Xi <pkuelelixi@xxxxxxxxx> wrote:
> #define EXT4_IOC_PRECACHE_EXTENTS _IO('f', 18)
>+#define EXT4_IOC_GETPROJECT _IOR('f', 19, long)
>+#define EXT4_IOC_SETPROJECT _IOW('f', 20, long)
>+ projid = (__u32)from_kprojid(&init_user_ns,
>+ EXT4_I(inode)->i_projid);
>+ return put_user(projid, (__u32 __user *) arg);
>+ }
>+ case EXT4_IOC_SETPROJECT:
>+ {
>+ __u32 projid;
>+
>+ if (get_user(projid, (__u32 __user *) arg))
>+ return -EFAULT;
>+
>+ return ext4_ioctl_setproject(filp,
Types don't match. Please use __u32 in the command definition instead of long, otherwise 32 bit compact won't work.
Arnd
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