Re: [PATCH v3 2/2] slub: use count_partial_free_approx() in slab_out_of_memory()

[David Rientjes]

On Fri, 19 Apr 2024, Jianfeng Wang wrote:

> slab_out_of_memory() uses count_partial() to get the exact count
> of free objects for each node. As it may get called in the slab
> allocation path, count_partial_free_approx() can be used to avoid
> the risk and overhead of traversing a long partial slab list.
> 
> At the same time, show_slab_objects() still uses count_partial().
> Thus, slub users can still have the option to access the exact
> count of objects via sysfs if the overhead is acceptable to them.
> 
> Signed-off-by: Jianfeng Wang <jianfeng.w.wang@xxxxxxxxxx>

Acked-by: David Rientjes <rientjes@xxxxxxxxxx>