[PATCH] i915: slab shrinker have to return -1 if it can't shrink any objects

[Keith Packard]

On Fri, 24 Jun 2011 17:03:22 +0900, KOSAKI Motohiro <kosaki.motohiro at jp.fujitsu.com> wrote:

> Now, i915_gem_inactive_shrink() should return -1 instead of 0 if it
> can't take a lock. Otherwise, vmscan is getting a lot of confusing
> because vmscan can't distinguish "can't take a lock temporary" and
> "we've shrank all of i915 objects".

This doesn't look like the cleanest change possible. I think it would be
better if the shrink function could uniformly return an error
indication so that we wouldn't need the weird looking conditional return.

-- 
keith.packard at intel.com
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