Messages in this thread | | | From | "Stephen C. Tweedie" <> | Date | Tue, 1 Jun 1999 01:01:58 +0100 (BST) | Subject | Re: Q: PAGE_CACHE_SIZE? |
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Hi,
On Mon, 31 May 1999 01:12:43 +0200 (CEST), Andrea Arcangeli <andrea@suse.de> said:
> I am just rewriting swapped-in pages to their previous location on > swap to avoid swap fragmentation. No need to have dirty pages into the > swap cache to handle that. We just have the information cached in the > page-map-> offset field. We only need to know when it make sense to > know if we should use it or not. To handle that I simply added a > PG_swap_entry bitflag set at swapin time and cleared after swapout to > the old entry or at free_page_and_swap_cache() time. The thing runs > like a charm (the swapin performances definitely improves a lot).
Cute! When, oh when, are you going to start releasing these things as separate patches which I can look at? This is one simple optimisation that I'd really like to see in 2.3 asap.
--Stephen
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