Messages in this thread |  | | Date | Tue, 30 Oct 2001 18:39:12 +0100 | From | Andrea Arcangeli <> | Subject | Re: need help interpreting 'free' output. |
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On Tue, Oct 30, 2001 at 09:28:29AM -0800, Linus Torvalds wrote: > Does anybody see why we have to remove it from the swap cache at all?
the only reason is to avoid wasting the swap space, so at least Rik's vm_swap_full logic should be added to it. The only advantage of dirty swap cache persistence is that it will maintain the same position on disk across a swapin/swapout cycle.
But anyways you can do that "swap persistence" work in do_swap_page too to save a page fault for the write swapins. Ok, it's in one more place but it will be less costly than running into another pagefault just after returning to userspace.
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