Messages in this thread | | | Date | Thu, 20 Mar 2003 15:20:45 -0800 | From | William Lee Irwin III <> | Subject | Re: [PATCH] anobjrmap 3/6 unchained |
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On Thu, Mar 20, 2003 at 11:15:06PM +0000, Hugh Dickins wrote: > Removed nr_reverse_maps, ReverseMaps: easily reverted if that > poses a vmstat or meminfo compatibility problem, or someone is > still interested in that number; but objrmap wasn't maintaining > it, and if they don't occupy space, is it worth showing? > Besides, look at page_dup_rmap for copy_page_range: I don't > want to clutter that with inc_page_state(nr_reverse_maps).
It was mostly to determine space savings and internal fragmentation on the pte_chain objects. It also helps get some notion of internal fragmentation on pagetables. It's of low importance; delete at will.
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