Re: [PATCH 07/13] RDMA/rxe: Rename kfree_rcu() to kfree_rcu_mightsleep()

[Zhu Yanjun]

On Thu, Mar 9, 2023 at 10:13 PM Uladzislau Rezki <urezki@xxxxxxxxx> wrote:
>
> > On Wed, Feb 01, 2023 at 04:08:13PM +0100, Uladzislau Rezki (Sony) wrote:
> > > The kfree_rcu()'s single argument name is deprecated therefore
> > > rename it to kfree_rcu_mightsleep() variant. The goal is explicitly
> > > underline that it is for sleepable contexts.
> > >
> > > Please check the RXE driver in a way that a single argument can
> > > be used. Briefly looking at it and rcu_head should be embed to
> > > free an obj over RCU-core. The context might be atomic.
> > >
> > > Cc: Bob Pearson <rpearsonhpe@xxxxxxxxx>
> > > Cc: Jason Gunthorpe <jgg@xxxxxxxxxx>
> > > Signed-off-by: Uladzislau Rezki (Sony) <urezki@xxxxxxxxx>

Thanks.
Acked-by: Zhu Yanjun <zyjzyj2000@xxxxxxxxx>

Zhu Yanjun

> > > ---
> > >  drivers/infiniband/sw/rxe/rxe_pool.c | 2 +-
> > >  1 file changed, 1 insertion(+), 1 deletion(-)
> > >
> > Could you please add you reviwed-by or Acked-by tags so we can bring
> > our series with renaming for the next merge window?
> >
> > Thanks!
> >
> __rxe_cleanup() can be called in two contexts, sleepable and not.
> Therefore usage of a single argument of the kvfree_rcu() is not correct
> here.
>
> Could you please fix and check your driver? If my above statement
> is not correct, please provide Acked-by or Reviwed-by tags to the
> path that is in question.
>
> Otherwise please add an rcu_head in your data to free objects over
> kvfree_rcu() using double argument API.
>
> Could you please support?
>
> --
> Uladzislau Rezki