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Gleb Fotengauer-Malinovskiy
808e9df477
This ioctl request reads from uffdio_continue structure written by
userspace which justifies _IOC_WRITE flag. It also writes back to that
structure which justifies _IOC_READ flag.
See NOTEs in include/uapi/asm-generic/ioctl.h for more information.
Fixes: f619147104 ("userfaultfd: add UFFDIO_CONTINUE ioctl")
Signed-off-by: Gleb Fotengauer-Malinovskiy <[email protected]>
Acked-by: Peter Xu <[email protected]>
Reviewed-by: Axel Rasmussen <[email protected]>
Reviewed-by: Dmitry V. Levin <[email protected]>
Signed-off-by: Linus Torvalds <[email protected]>