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    SubjectRe: [PATCH] swapin flush cache bug
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    > Suppose there's I/O to the physical page P asynchronously, and the
    > page is placed in the swap cache. It remains cache entry, say,
    > indexed kernel virtual address K. Then, process maps P at U. U and K
    > (may) indexes differently. The process will get the data from memory
    > (not the one in the cashe), if it's not flushed.

    Ok we need to handle that case a bit more intelligently so those flushes dont
    get into other ports code paths.

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