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SubjectRe: [Ext2-devel] [PATCH] distributed counters for ext2 to avoid group scaning
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

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.

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