Messages in this thread | | | Date | Fri, 4 Jul 2008 09:11:36 +0100 | From | Alan Cox <> | Subject | Re: [PATCH 1/2] Avoid bio_endio recursion |
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> That statement is true for any two block device protocol. Then, why
Not it isn't. The mentality of quite a few devices is very different to SCSI in the way the express queueing and caching. You cannot for example map I2O Block onto SCSI at all.
> doesn't Linux use SCSI for all block devices? --- add scsi command block > to struct bio and we can pass them directly to controller driver
That was discussed, along with continuing to split scsi and block aspects of queueing, tagging and error recovery apart. Windows btw does generally follow that 'everything is SCSI' approach
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