On Wed, 25 Aug 2010, David Rientjes wrote:

On Wed, 25 Aug 2010, Christoph Lameter wrote:

quoted

If the higher order fails in slub then an order 0 alloc is attempted
without __GFP_NORETRY. In both cases the nofail behavior of the page
allocator determines the outcode.

Right, I thought you said the slab layer passes __GFP_NOFAIL when there's
no objects available.

Yes, the slab layer calls the page allocator when there are no objects
available and passes the __GFP_NOFAIL that the user may have set in the
call to the page allocator.

Why then add new functions that do the same?