Messages in this thread | | | Date | Mon, 15 Oct 2007 22:00:40 -0700 (PDT) | From | david@lang ... | Subject | Re: What still uses the block layer? |
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On Mon, 15 Oct 2007, Greg KH wrote:
> On Mon, Oct 15, 2007 at 10:04:01PM -0600, Matthew Wilcox wrote: >> On Mon, Oct 15, 2007 at 07:54:22PM -0700, david@lang.hm wrote: >>> do PCI devices reorder their bus numbers spontaniously, or only if you >>> change the hardware? >> >> The only system I've had that reordered PCI bus numbers was when I had a >> partitionable system and changed the partitioning. Not quite "change >> the hardware", but neither was it "spontaneous". It was certainly >> unexpected (for me). >> >> Greg probably has quite different examples. > > Changing the hardware (adding a new PCI device or removing one) are the > most common times this happens. But I have seen reports of this > happening when you upgrade/downgrade BIOS versions, and, in some > oops-we-messed-up cases, when we changed things in the kernel.
BIOS upgrades qualify as changing hardware (or close to it)
oops-we-messed-up cases of kernel changes don't justify 'best effort' nameing, it's a regression that needs to be fixed.
now the other example given of docking a laptop is closer to reasonable (and is definantly a reason to have 'best effort' nameing as an option), but that's still a relativly special case, and it _is_ definantly changeing the hardware
David Lang - 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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