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).