On Thu, 23 Feb 2006, Andrew Morton wrote:
> I'm very much hoping that it is not needed. Would prefer to just toss the
> whole thing away.
Right.
> What's it supposed to do anyway? Keep wholly-unused pages hanging about in
> each slab cache? If so, it may well be a net loss - it'd be better to push
> those pages back into the page allocator so they can get reused for
> something else while they're possibly still in-cache. Similarly, it's
> better to fall back to the page allocator for a new slab page because
> that's more likely to give us a cache-hot one.
There needs to be some convincing rationale for SLAB_NO_REAP plus the
documentation should be updated to explain correctly what it does if we
decide to keep SLAB_NO_REAP.
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