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    SubjectRe: [git patches] xfs and block fixes for virtually indexed arches


    On Thu, 17 Dec 2009, Russell King wrote:
    >
    > That's not entirely true. If you have write back caches which are not DMA
    > coherent, you need to as a minimum:
    >
    > - on write, clean the cache to ensure that the page is up to date with data
    > held in cache.
    >
    > - on read, you must ensure that there are no potential write-backs before
    > the read commenses and invalidate at some point.

    Right you are.

    Linus


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