On Wed, 17 Oct 2012, Glauber Costa wrote: > Some flags are used internally by the allocators for management > purposes. One example of that is the CFLGS_OFF_SLAB flag that slab uses > to mark that the metadata for that cache is stored outside of the slab. > > No cache should ever pass those as a creation flags. We can just ignore > this bit if it happens to be passed (such as when duplicating a cache in > the kmem memcg patches). > > Because such flags can vary from allocator to allocator, we allow them > to make their own decisions on that, defining SLAB_AVAILABLE_FLAGS with > all flags that are valid at creation time. Allocators that doesn't have > any specific flag requirement should define that to mean all flags. > > Common code will mask out all flags not belonging to that set. > > [ v2: leave the mask out decision up to the allocators ] > [ v3: define flags for all allocators ] > [ v4: move all definitions to slab.h ] > > Signed-off-by: Glauber Costa <[email protected]> > Acked-by: Christoph Lameter <[email protected]> > CC: David Rientjes <[email protected]> > CC: Pekka Enberg <[email protected]>
Acked-by: David Rientjes <[email protected]> _______________________________________________ Devel mailing list [email protected] https://openvz.org/mailman/listinfo/devel
