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WU Fengguang wrote: > Hi Rik, > The CLOCK-Pro page replacement is quite appealing, and I'd like to > contribute an idea: How about store bookkeeping info of dropped pages > in-place in radix_tree? > > The slots in radix_tree_node can be used for bookkeeping data when > the corresponding pages are dropped. When all pages in a radix_tree_node > have been dropped, it is registered in an array/list for delayed > reclaim. > > It would be fast and simple: > - no cache-line pollution > - no extra lock (with Nick Piggin's great RCU improvement) Just a note if you are looking into this - the last version of the radix-tree lockless readside patches I made public IIRC had some bugs in them which I have since fixed. Thanks, Nick -- SUSE Labs, Novell Inc. Send instant messages to your online friends http://au.messenger.yahoo.com - To unsubscribe from this list: send the line "unsubscribe linux-kernel" in the body of a message to majordomo@vger.kernel.org More majordomo info at http://vger.kernel.org/majordomo-info.html Please read the FAQ at http://www.tux.org/lkml/ | |||||||||
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