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SubjectRe: 2.4.20: Proccess stuck in __lock_page ...
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)
>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


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