Re: Linux SLAB allocator issue

["Pekka Enberg" <penberg@cs.helsinki.fi>]

On 6/6/06, Xin Zhao <uszhaoxin@gmail.com> wrote:
> I am trying to check how many slabs are used for inode_cache, but
> found that all slabs are added to slabs_full list, and slabs_partial
> is always empty. Even if the active object number does not exactly
> occupy all slabs.
>
> Does that mean Linux 2.6 remove the use of slabs_partial?

No. If slabs_partial is really empty, the number of active objects
should match the number of objects in a slab; otherwise you should see
an error message when you do cat /proc/slabinfo (see s_show in
mm/slab.c for details).

How are you verifying that the partial list is empty?

On 6/6/06, Xin Zhao <uszhaoxin@gmail.com> wrote:
> Another question, the constructor transfered to the
> kmem_cache_create() function is called for every object in a slab when
> it is created. Is this true? Is there any way to call back a function
> _only once_ when a new slab is allocated?

We don't have per-slab constructors. Only per-object. What do you need it for?

                                            Pekka