Re: [PATCH 12/14] vmscan: Do not writeback pages in direct reclaim

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Hello,

> Ok, that's reasonable as I'm still working on that patch. For example, the
> patch disabled anonymous page writeback which is unnecessary as the stack
> usage for anon writeback is less than file writeback. 

How do we examine swap-on-file?

> Second, using systemtap,
> I was able to see that file-backed dirty pages have a tendency to be near the
> end of the LRU even though they are a small percentage of the overall pages
> in the LRU. I'm hoping to figure out why this is as it would make avoiding
> writeback a lot less controversial.




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