Messages in this thread | | | Date | Fri, 21 Oct 2005 20:04:55 +0200 | From | Christoph Hellwig <> | Subject | Re: ioctls, etc. (was Re: [PATCH 1/4] sas: add flag for locally attached PHYs) |
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On Fri, Oct 21, 2005 at 01:48:45PM -0400, Luben Tuikov wrote: > > why James has suggested implementing SMP as a block driver. People get > > stuck into thinking "block driver == block device", which is wrong. The
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> > Linux block layer is nothing but a message queueing interface. > > Now, just because James suggested implementing the SMP service as a block > device you think this is the right thing to do? > > How about this: Why not as a char device?
you can implement a char device using the block layer. See drivers/scsi/{ch.c,osst.c,sg.c,st.c} for examples.
That beeing said I tried this approach. It looks pretty cool when you think about it, but the block layer is quite a bit too heavyweight for queueing up a few SMP requests, and we need to carry too much useless code around for it. - To unsubscribe from this list: send the line "unsubscribe linux-kernel" in the body of a message to majordomo@vger.kernel.org More majordomo info at http://vger.kernel.org/majordomo-info.html Please read the FAQ at http://www.tux.org/lkml/
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