Re: [PATCH] xfs: remove kmem_zalloc_greedy

[Darrick J. Wong]

On Tue, Mar 07, 2017 at 01:07:54AM +0100, Christoph Hellwig wrote:
> I like killing it, but shouldn't we just try a normal kmem_zalloc?
> At least for the fallback it's the right thing, and even for an
> order 2 allocation it seems like a useful first try.

I'm confused -- kmem_zalloc_large tries kmem_zalloc with KM_MAYFAIL and
only falls back to __vmalloc if it doesn't get anything.

Or maybe I've misunderstood, and you're asking if we should try
kmem_zalloc(4 pages), then kmem_zalloc(1 page), and only then switch to
the __vmalloc calls?

--D