On Fri, 4 May 2007, Peter Zijlstra wrote:
> Page allocation rank is a scalar quantity connecting ALLOC_ and gfp flags
> which
> represents how deep we had to reach into our reserves when allocating a page.
> Rank 0 is the deepest we can reach (ALLOC_NO_WATERMARK) and 16 is the most
> shallow al
The slab allocator has some unfairness wrt gfp flags; when the slab cache is
grown the gfp flags are used to allocate more memory, however when there is
slab cache available (in partial or free slabs, per cpu caches or otherwise)
gfp flags are ignored.
Thus it is possible for less critical slab a
