Messages in this thread | | | Date | Tue, 10 Jul 2001 12:49:03 -0700 | From | Jonathan Lahr <> | Subject | Re: io_request_lock patch? |
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Jens Axboe [axboe@suse.de] wrote: > On Mon, Jul 09 2001, Jonathan Lahr wrote: > > > > I have heard that a patch to reduce io_request_lock contention by > > breaking it into per queue locks was released in the past. Does > > anyone know where I could find this patch if it exists? > > I had a patch about a year ago that did it safely for the block layer > and IDE at least, and also for selected SCSI hba's. Some of the latter > variety are pretty hard and/or tedious to fixup, Eric Y has done some > work automating this process almost completely. Until that is done, the > general patch has no chance of being integrated.
I am investigating reducing io_request_lock contention in the shorter term if possible with smaller incremental modifications. So I'm first trying to discover any previous work that might have been done toward this purpose.
-- Jonathan Lahr IBM Linux Technology Center Beaverton, Oregon lahr@us.ibm.com 503-578-3385
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