Re: [PATCH 00/10] foundations for reserve-based allocation

Daniel Phillips
2007-08-06T19:31:04Z

On Monday 06 August 2007 11:17, Peter Zijlstra wrote:
> And how do we know a page was taken out of the reserves?

Why not return that in the low bit of the page address? This is a
little more cache efficient, does not leave that odd footprint in the
page union and forces the caller to examine the
alloc_pages(...P_MEMALLOC) return, making it harder to overlook the
fact that it got a page out of reserve and forget to put one back
later.

Regards,

Daniel