On Mon, Jul 30, 2007 at 07:07:58PM +0530, Dhaval Giani wrote:
> Hi Balbir,
>
> > diff -puN mm/memcontrol.c~mem-control-lru-and-reclaim mm/memcontrol.c
> > --- linux-2.6.23-rc1-mm1/mm/memcontrol.c~mem-control-lru-and-reclaim 2007-07-28 01:12:50.000000000 +0530
> > +++ linux-2.6.23-rc1-mm1-balbir/mm/memcontrol.c 2007-07-28 01:12:50.000000000 +0530
>
> > /*
> > * The memory controller data structure. The memory controller controls both
> > @@ -51,6 +54,10 @@ struct mem_container {
> > */
> > struct list_head active_list;
> > struct list_head inactive_list;
> > + /*
> > + * spin_lock to protect the per container LRU
> > + */
> > + spinlock_t lru_lock;
> > };
>
> The spinlock is not annotated by lockdep. The following patch should do
> it.
>
> Signed-off-by: Dhaval Giani <[email protected]>
> Signed-off-by: Gautham Shenoy R <[email protected]>
^^^^^^^^^^^^^^^^
Gautham R Shenoy
>
>
> Index: linux-2.6.23-rc1/mm/memcontrol.c
> ===================================================================
> --- linux-2.6.23-rc1.orig/mm/memcontrol.c 2007-07-30 17:27:24.000000000 +0530
> +++ linux-2.6.23-rc1/mm/memcontrol.c 2007-07-30 18:43:40.000000000 +0530
> @@ -501,6 +501,9 @@
>
> static struct mem_container init_mem_container;
>
> +/* lockdep should know about lru_lock */
> +static struct lock_class_key lru_lock_key;
> +
> static struct container_subsys_state *
> mem_container_create(struct container_subsys *ss, struct container *cont)
> {
> @@ -519,6 +522,7 @@
> INIT_LIST_HEAD(&mem->active_list);
> INIT_LIST_HEAD(&mem->inactive_list);
> spin_lock_init(&mem->lru_lock);
> + lockdep_set_class(&mem->lru_lock, &lru_lock_key);
> mem->control_type = MEM_CONTAINER_TYPE_ALL;
> return &mem->css;
> }
> --
> regards,
> Dhaval
>
> I would like to change the world but they don't give me the source code!
--
Gautham R Shenoy
Linux Technology Center
IBM India.
"Freedom comes with a price tag of responsibility, which is still a bargain,
because Freedom is priceless!"
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