Messages in this thread |  | | Subject | Re: Locking comment on shrink_caches() | Date | Thu, 27 Sep 2001 13:10:49 +0100 (BST) | From | Alan Cox <> |
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> Yes, this was my intended point. Please see my quoted text above and > note the "exclusive cache line acquisition" with emphasis on the word > "acquisition" meaning you don't have the cache line in E state yet.
See prefetching - the CPU prefetching will hide some of the effect and the spin_lock_prefetch() macro does wonders for the rest.
Alan
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