Re: [PATCH v4 5/8] mm: shrinkers: make count and scan in shrinker debugfs lockless

[Qi Zheng <zhengqi.arch@xxxxxxxxxxxxx>]

On 2023/3/9 17:39, Vlastimil Babka wrote:
> On 3/7/23 07:56, Qi Zheng wrote:
> > Like global and memcg slab shrink, also use SRCU to
> > make count and scan operations in memory shrinker
> > debugfs lockless.
> >
> > Signed-off-by: Qi Zheng <zhengqi.arch@xxxxxxxxxxxxx>
> > ---
> >   mm/shrinker_debug.c | 24 +++++++-----------------
> >   1 file changed, 7 insertions(+), 17 deletions(-)
> >
> > diff --git a/mm/shrinker_debug.c b/mm/shrinker_debug.c
> > index 39c3491e28a3..6aa7a7ec69da 100644
> > --- a/mm/shrinker_debug.c
> > +++ b/mm/shrinker_debug.c
>
> Forgot to mention that this file should now likely also #include <linux/srcu.h>

Got it. Will do.

Thanks,
Qi

> > @@ -9,6 +9,7 @@
> >   /* defined in vmscan.c */
> >   extern struct rw_semaphore shrinker_rwsem;
> >   extern struct list_head shrinker_list;
> > +extern struct srcu_struct shrinker_srcu;