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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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