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Hi Hugh, On Tue, 17 Sep 2002, Hugh Dickins wrote: > What I never did was try GFP_HIGHUSER and kmap on the index pages: > I think I decided back then that it wasn't likely to be needed > (sparsely filled file indexes are a rarer case than sparsely filled > pagetables, once the stupidity is fixed; and small files don't use > index pages at all). But Bill's testing may well prove me wrong. I think that this would be a good improvement. Big database and application servers would definitely benefit from it, desktops could easier use tmpfs as temporary file systems. I never dared to do it with my limited time since I feared deadlock situations. Also I ended up that I would try to go one step further: Make the index pages swappable, i.e. make the directory nodes normal tmpfs files. This would even make the accounting right. Greetings Christoph - To unsubscribe from this list: send the line "unsubscribe linux-kernel" in the body of a message to majordomo@vger.kernel.org More majordomo info at http://vger.kernel.org/majordomo-info.html Please read the FAQ at http://www.tux.org/lkml/ | ||||||||||||
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