Re: tx_timeout and timer serialisation

[Andrew Morton <andrewm@xxxxxxxxxx>]

kuznet@xxxxxxxxxxxxx wrote:
> 
> ...
> >                                        It can delete the
> >    timer and kfree it, or reuse its memory for something else,
> >    or turn it into a semantically different timer **
> 
> Yes, and in this case you cannot use del_timer_sync() and
> have to use generic reference counting scheme.

To use refcounting we need a new sort of timer, so the timer core can
manage their storage.  So instead of having:

struct some_struct
{
        ...
        struct timer_list timer;
        ...
}

we have:

struct some_struct
{
        ...
        struct new_timer *timer;
        ...
}

-- 
-akpm-