Re: 2.4.20: Proccess stuck in __lock_page ...

Marc-Christian Petersen
2003-05-27T20:15:01Z

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