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    SubjectRe: sata badness in 2.6.20-rc1? [Was: Re: md patches in -mm]
    Alan wrote:
    > On Fri, 15 Dec 2006 13:39:27 -0800
    > Andrew Morton <akpm@osdl.org> wrote:
    >
    >> On Fri, 15 Dec 2006 13:05:52 -0800
    >> Andrew Morton <akpm@osdl.org> wrote:
    >>
    >>> Jeff, I shall send all the sata patches which I have at you one single time
    >>> and I shall then drop the lot. So please don't flub them.
    >>>
    >>> I'll then do a rc1-mm2 without them.
    >> hm, this is looking like a lot of work for not much gain. Rafael, are
    >> you able to do a quick chop and tell us whether these:
    >
    > The md one and the long history of reports about parallel I/O causing
    > problems sounds a lot more like the kmap stuff you were worried about
    > Andrew. I'd be very intereste dto know if it happens on x86_32 built with
    > a standard memory split and no highmem....

    2.6.20-rc1 works, and 2.6.20-rc1 does not have the kmap_atomic() fix.

    Upstream does kmap_atomic(KM_USER0) and -mm does kmap_atomic(KM_IRQ0)

    Jeff



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