Re: 2.4.20: Proccess stuck in __lock_page ...

[manish (manish@storadinc.com)]

Marc-Christian Petersen wrote:

> On Tuesday 27 May 2003 22:20, Andrea Arcangeli wrote:
>
> Hi Andrea,
>
>
> > > 1. Stock 2.4.20
> > > 2. 2.4.20 with the io_request_lock removed.
> > > The tests on the first one are still going. The tests on the second one
> > > showed processes getting stuck for long times (> 5 minutes) and not
> > > paused ...
> > sorry if it's a dumb question but what is the "io_request_lock removed"
> > thing? Hope you didn't delete any io_request_lock, if you did you can
> > get worse things than crashes (i.e. mm/fs corruption). the pausing bug
> > was a genuine race (quite innocent, if you could trigger a disk unplug
> > you could recover from it)
> >
> > Andrea
> funny. I asked him the same ;)
>
> see his response:
>
> -----------------------------------------------------------------------
>
> > what is this io_request_lock patch you are talking about?
> >
> > ciao, Marc
> We made some changes to the 2.4.20 kernel to remove the io_request_lock 
> and replace with queue_lock and host_lock.
> -----------------------------------------------------------------------
>
> ciao, Marc
We made a change in the 2.4.20 kernel to remove the io_request_lock and 
replace with the host_lock and the queue_lock.  Probably, not a right 
thing to do

Thanks
Manish



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