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    SubjectRe: 2.6.9-rc1-mm3
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    Andrew Morton <akpm@osdl.org> writes:

    > ftp://ftp.kernel.org/pub/linux/kernel/people/akpm/patches/2.6/2.6.9-rc1/2.6.9-rc1-mm3/
    >
    > - Added the m32r architecture. Haven't looked at it yet.
    >
    > - Status update on various large patches in -mm:
    >
    > - The packet-writing code is awaiting resolution of the
    > abuse-of-elevator-fields problem.

    It doesn't abuse the elevator fields any more. That was fixed by the
    packet-writing-avoid-bio-hackery patch which is already in -mm.

    One problem that does remain though, is that when dumping huge amounts
    of data to a CD or DVD disc (so that you get memory pressure), the
    effective writing speed of other block devices (like IDE hard disks)
    is reduced to the same speed as the packet device.

    I have posted a patch that fixes this problem by limiting the amount
    of writeback data in the packet driver, but unfortunately it makes the
    effective writing speed of the packet device suffer a lot. The proper
    fix is probably to improve the filesystem and/or VM code to start I/O
    operations in sequential order a lot more often than it currently
    does.

    --
    Peter Osterlund - petero2@telia.com
    http://w1.894.telia.com/~u89404340
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