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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.


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