Messages in this thread | | | Date | Thu, 17 Dec 2009 10:17:03 -0800 (PST) | From | Linus Torvalds <> | Subject | Re: [git patches] xfs and block fixes for virtually indexed arches |
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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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