Messages in this thread | | | Date | Thu, 11 Mar 2004 16:02:30 +0100 | From | Jens Axboe <> | Subject | Re: 2.6.4-rc-bk3: hdparm -X locks up IDE |
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On Thu, Mar 11 2004, Bartlomiej Zolnierkiewicz wrote: > On Thursday 11 of March 2004 15:48, Jens Axboe wrote: > > On Thu, Mar 11 2004, Bartlomiej Zolnierkiewicz wrote: > > > On Thursday 11 of March 2004 15:14, Denis Vlasenko wrote: > > > > I discovered that hdparm -X <mode> /dev/hda can lock up IDE > > > > interface if there is some activity. > > > > > > Known bug and is on TODO but fixing it ain't easy. > > > Thanks for a report anyway. > > > > Wouldn't it be possible to do the stuff that needs serializing from the > > end_request() part and get automatic synchronization with normal > > requests? > > That's the way to do it (REQ_SPECIAL) but unfortunately on some chipsets > we need to synchronize both channels (whereas we don't need to serialize > normal operations).
Ugh yes, that gets nasty... Good luck with that :)
-- Jens Axboe
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