Messages in this thread | | | Date | Tue, 27 May 2003 13:50:55 -0700 | From | manish <> | Subject | Re: 2.4.20: Proccess stuck in __lock_page ... |
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Andrea Arcangeli wrote:
>On Tue, May 27, 2003 at 01:42:32PM -0700, manish wrote: > >>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 >> > >right you are, but never mind, only remeber e2fsck the fs before >booting the box so you don't risk fs corruption later with the solid >kernels. > >Andrea > So, does it imply that we cannot remove the io_request_lock in 2.4 at all?
Thanks Manish
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