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    SubjectRe: [PATCH] RFC: futex: make futex_lock_pi interruptible
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    On Tuesday 27 October 2009, Darren Hart wrote:
    > The following C test case demonstrates how this patch could be used to
    > implement interruptible locking. There is an awful lot of debug code and
    > some other relics of a hacked together test in there now, but if anyone
    > wanted to test the futex changes, this will do the trick.
    >

    Your test program uses a signal handler to interrupt the mutex. If you
    are using a signal handler already to implement a user space mutex_cancel,
    why can't you just do a longjmp out of the signal handler rather than
    modifying the kernel?

    Arnd <><


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