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SubjectRe: [PATCH] Add FUTEX_CMP_REQUEUE futex op
Jakub Jelinek <jakub@redhat.com> wrote:
>
> asmlinkage long sys_futex(u32 __user *uaddr, int op, int val,
> - struct timespec __user *utime, u32 __user *uaddr2)
> + struct timespec __user *utime, u32 __user *uaddr2,
> + int val3)

Is it safe to go adding a new argument to an existing syscall in this manner?

It'll work OK on x86 because of the stack layout but is the same true of
all other supported architectures?
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