Martin J. Bligh wrote:
If they're freeable, we should easily be able to move them, and therefore
compact a fragmented slab. That way we can preserve the LRU'ness of it.
Stage 1: free the oldest entries. Stage 2: compact the slab into whole
pages. Stage 3: free whole pages back to teh page allocator.
That seems like the perfect solution to me. Freeing up 95% or more
gives us clean pages - and moving instead of actually freeing
everything avoids the cost of repopulating the cache later. :-)
Helge Hafting
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