Messages in this thread | | | Date | Mon, 10 Oct 2005 23:54:48 +1000 | From | Nick Piggin <> | Subject | Re: [RFC] use radix_tree for non-resident page tracking |
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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.
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