Thank you so much. I too read the same thing.But I am unable to understand that point. Now It is cleared for me. On Thu, 2005-09-22 at 12:05 +0500, Fawad Lateef wrote: > On 9/22/05, raja <vnagaraju@xxxxxxxxxxxx> wrote: > > Hi, > > Would you please explain me wht is the concept of "double-acquire > > deadlock" > > > > Double-Acquire deadlock refers to the term that you took a lock and > then with-in the lock you are again trying to acquire the same lock > which you already acquired, so this will creates a deallock ... > > I read this point some-where else which might clear you little more : > > Spin locks can be used in interrupt handlers, but before > obtaining the lock, one should disable local interrupts(on current > processor), or it will cause double-acquire deadlock. > > This means that your same interrupt handler can again be called if you > don't disables local interrupts and in that you will try to acquire > the same lock again which is already lock ...... (Correct me if my > interpretation of the above point is wrong) > > -- > Fawad Lateef -- Kernelnewbies: Help each other learn about the Linux kernel. Archive: http://mail.nl.linux.org/kernelnewbies/ FAQ: http://kernelnewbies.org/faq/
