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/