Re: [Xen-devel] [GIT PULL] for-2.6.32/bug-fixes

["Jan Beulich" <JBeulich@xxxxxxxxxx>]

>>> On 18.05.11 at 17:13, Konrad Rzeszutek Wilk <konrad.wilk@xxxxxxxxxx> wrote:
>> >> That wouldn't tell you anything if they're all empty, as there's nothing
>> >> preventing other guests (including other guest OSes) to still send
>> >> non-empty ones - after all the protocol allows for this.
>> > 
>> > Aha! That is what you been trying to tell me. I will make a patch to make
>> > sure to not overwrite the req->sector_number blindly. What other guest OSes
>> 
>> Or use the patch I proposed?
> 
> Yes. Much superior to mine.
>> 
>> > use barriers? I looked at Solaris (it uses 'feature-flush-cache'), NetBSD
>> > ('feature-flush-cache') and Linux ('feature-barrier' and now in 2.6.40
>> > 'feature-flush-cache').
>> > 
>> > The GPLV Windows drivers have no barrier implementation - do you know if
>> > the Novell ones are using barriers?
>> 
>> No, I don't.
> 
> Any idea who might know?

Kirk should.

Jan


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