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    SubjectRe: [PATCHSET] block: fix PIO cache coherency bug
    On Sat, Jan 14 2006, Tejun Heo wrote:
    > Hello, all.
    > This patchset tries to fix data corruption bug caused by not handling
    > cache coherency during block PIO. This patch implements
    > blk_kmap/unmap helpers which take extra @dir argument and perform
    > appropriate coherency actions. These are to block PIO what dma_map/
    > unmap are to block DMA transfers.
    > IDE, libata, SCSI, rd and md are converted. Still left are nbd, loop
    > and pktcddvd. If I missed something, please let me know.
    > Russell, can you please test whether this fixes the bug on arm? If
    > this fixes the bug and people agree with the approach, I'll follow up
    > with patches for yet unconverted drivers and documentation update.


    Patches looks good, it's good to get this hole closed. Thanks!

    Jens Axboe

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