On 06/08/2012 11:31 PM, Christoph Lameter wrote:
Please make this conditional on CONFIG_MEMCG or so. The bit can be useful
in particular on 32 bit architectures.
Looking at how __GFP_NOTRACK works - which is also ifdef'd, the bit it
uses is skipped if that is not defined, which I believe is a sane thing
to do.
Given that, I don't see the point of conditionally defining the memcg
bit, It basically means that the only way we can reuse the bit saved is
by making a future feature fundamentally incompatible with memcg.
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