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SubjectRe: [Ext2-devel] [PATCH] distributed counters for ext2 to avoid group scaning
On Mon, Mar 17, 2003 at 12:23:57PM -0800, Andrew Morton wrote:
> Matthew Wilcox <> wrote:
> >
> > Anyway, I think dcounters should probably be allocated from kmalloc_percpu()
> > rather than as part of the dcounter struct.
> That will still consume up to 4 kilobytes per 32-bit counter. We'd
> need to merge Kiran & Dipankar's interlace allocator to do this less
> grossly.

Right -- or have dcounter manage a pool of memory itself. That's maybe too
much work though.

> Which is why I'm waiting to see some profiles and benchmarks. Judging from
> the last set of profiles, in which ext2_count_free_blocks() was not present,
> this may not be justified.

If we can manage without it, that's even better of course.

"It's not Hollywood. War is real, war is primarily not about defeat or
victory, it is about death. I've seen thousands and thousands of dead bodies.
Do you think I want to have an academic debate on this subject?" -- Robert Fisk
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