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Re: [PATCH 2/4] Add a __GFP_SLABMEMCG flag [message #46753 is a reply to message #46751] Sat, 09 June 2012 08:19 Go to previous messageGo to previous message
Glauber Costa is currently offline  Glauber Costa
Messages: 916
Registered: October 2011
Senior Member
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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